feb 28, 2014 oil lease name index listing page … · 2/28/2014 · feb 28, 2014 oil lease name...

FEB 28, 2014 OIL LEASE NAME INDEX LISTING PAGE 1 (OLM003)

DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ REEVES PEARSALL (AUSTIN CHALK) LEEXUS OIL LLC 12813 (S.A.H.) V.H. HRBACEK W. P. HOLLOWAY (BUDA) EXXCEL OPERATING COMPANY 04024 A. WINANS SOMERSET MCB C & J, LLC 10790 A.D.D. CORPORATION MARCELINA CREEK (AUSTIN CHALK) SARITA ENERGY RESOURCES, LTD. 06857 AARON -A- SOMERSET SEEKER OIL COMPANY, INCORPORATED 12168 AARON, CHAS. SOMERSET GREAT PLAINS RESOURCES, INC. 11296 ABBOT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17068 ABEL 'A' TOM TOM (GEORGETOWN) DYAD PETROLEUM COMPANY 17304 ABEL DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16418 ACHTERBERG, ANTON LA VERNIA B. & L. OIL COMPANY 00825 ACKER HAGIST RANCH, NORTH (ARGO 2500) WHITESANDS RESOURCES, L.L.C. 11914 ACLETO CREEK WATERFLOOD UNIT ACLETO CREEK (POTH A) JIMCO ENERGY INC. 09051 ADA HAMMOND HEIRS HAMMOND (SAN MIGUEL NO 4) SANCHEZ OIL & GAS CORPORATION 14643 ADAM, C. A. ECKERT GINCO OPERATING CO. 00543 ADAMEK UNIT A EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 17005 ADAMITZ LEMING (2934 SAND) GINCO OPERATING CO. 08789 ADAMITZ, W.A. -C- LEMING (2934 SAND) JB OIL & GAS WELL SERVICE 08872 ADAMITZ, WALLACE L. LEMING (2934 SAND) REPUBLIC RESOURCES, LLC. 08374 ADAMITZ, WALLACE L. LEMING (2934 SAND) WEN-BE 08737 ADAMS PEARSALL (AUSTIN CHALK) LEASE ROLLOVER OPERATIONS, INC. 12921 ADAMS RANCH "D" ADAMS (NAVARRO, UPPER) ACTIVA RESOURCES, LLC 06040 ADAMS, CLARA SOMERSET U. D. MAN, INC. 02549 ADAMS, FRANKIE CHRISTINE, SE. (WILCOX) THOMAS EXPLORATION & DEVEL., INC 04705 ADAMS, IDA B., ETAL PEARSALL (OLMOS -A-) LEASE ROLLOVER OPERATIONS, INC. 03468 ADAMS, SAM DARST CREEK STROUD/BARKER INC. 08347 ADCOCK, ALONZO KAYE (NAVARRO) SOURCE PETROLEUM INC. 01918 ADDISON AVERY BRISCOE RANCH (EAGLEFORD) STRAND ENERGY, L.C. 15485 ADDISON AVERY RED HAWK (EAGLE FORD) STRAND ENERGY, L.C. 15484 ADELE DUBOSE EAGLEVILLE (EAGLE FORD-1) ROSETTA RESOURCES OPERATING LP 15914 ADELE DUBOSE UNIT A EAGLEVILLE (EAGLE FORD-1) ROSETTA RESOURCES OPERATING LP 17053 ADELINE BATEMAN (AUSTIN CHALK) R & S OIL PRODUCTION CO. 13929 ADKINS TAYLOR-INA CHICKEN COOP, INC., THE 12302 AERY EAGLEVILLE (EAGLE FORD-1) TALISMAN ENERGY USA INC. 15836 AGUILAR FAIRFIELD DRACHEN OIL COMPANY 14584 AGUILAR, CIRILDO FAIRFIELD CALK, ROGER D. 07670 AGUIRRE, LEONARDO B. SOMERSET PETROSAURUS, INC. 11207 AHLHORN NAJVAR UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15973 AHRENS, STANLEY E. LA VERNIA DONOCO OIL COMPANY 05851 ALAMO NATL BNK., TRUSTEE JACK FROST (CROCKETT) CANYON CREEK RESOURCES, LLC 03424 ALANIS, A.A. KYOTE BRYMER CONTRACTING INCORPORATED 10651 ALCORTA, M & B SOMERSET WSM 06609 ALDERMAN RANCH EF CARRIZO SWIFT ENERGY OPERATING, LLC 15654 ALDRIDGE NURSERY, INC. FAIRFIELD GREAT PLAINS RESOURCES, INC. 09561 ALDRIDGE, R. C. FAIRFIELD GREAT PLAINS RESOURCES, INC. 05468 ALDRIDGE, R.C. -B- FAIRFIELD GINCO OPERATING CO. 06282 ALDRIDGE, ROBBIE MINERVA-ROCKDALE THREE-C PRODUCTION COMPANY 10178 ALEN PAGEL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16692 ALENE CHARLOTTE (NAVARRO) ROLAND OIL COMPANY 03314 ALEXANDER BATEMAN (AUSTIN CHALK) FOYORO ENERGY, LLC 07975 ALEXANDER BATEMAN (AUSTIN CHALK) HESS, JERRY OPERATING CO. 16432 ALEXANDER BUCHANAN LULING O&G LLC 03612


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ ALEXANDER DALE-MCBRIDE FIELD OPERATING COMPANY, INC. 11819 ALEXANDER DALE-MCBRIDE HESS, JERRY OPERATING CO. 15903 ALEXANDER DALE-MCBRIDE TRINIDAD PETROLEUM, INC. 13529 ALEXANDER -A- BATEMAN (AUSTIN CHALK) TRINIDAD PETROLEUM, INC. 12347 ALEXANDER -A- DALE-MCBRIDE TRINIDAD PETROLEUM, INC. 13661 ALEXANDER -A- FENTRESS (1750) AUSTIN OPERATING, LLC. 09457 ALEXANDER #3 BATEMAN (AUSTIN CHALK) HESS, JERRY OPERATING CO. 15056 ALEXANDER "B" PLUM CREEK, N. (DALE LIME) HIGHER STANDARD OIL COMPANY,INC. 11349 ALEXANDER, C. BATEMAN (AUSTIN CHALK) FOYORO ENERGY, LLC 08213 ALEXANDER, C. D. BATEMAN (AUSTIN CHALK) R & S OIL PRODUCTION CO. 03388 ALEXANDER, E.C. BATEMAN (AUSTIN CHALK) TRIPLE C OIL INC. 13015 ALEXANDER, E.C. BUCHANAN DARST CREEK OIL COMPANY 06386 ALEXANDER, E.C. DALE-MCBRIDE E & W SERVICES, INC. 12055 ALEXANDER, E.C. DALE-MCBRIDE FIELD OPERATING COMPANY, INC. 11701 ALEXANDER, KATHLEEN JONES FLORESVILLE, E. (POTH B 2800) JIMCO ENERGY INC. 03735 ALEXANDER, W.L. BATEMAN (AUSTIN CHALK) TRINIDAD PETROLEUM, INC. 09198 ALEXIS PEARSALL (AUSTIN CHALK) HOLLEY OIL COMPANY, LLC 14626 ALFORD EAGLEVILLE (EAGLE FORD-1) TIDAL PETROLEUM, INC. 16275 ALFORD PEACH CREEK (AUSTIN CHALK) IMPETRO OPERATING LLC 06829 ALFORD, ROY MINERVA-ROCKDALE CANON OIL AND GAS 05846 ALI-O UNIT PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 12224 ALINE WILLIAMS UNIT A BRISCOE RANCH (EAGLEFORD) CHEYENNE PETROLEUM COMPANY 15831 ALKEK TWO M (GEORGETOWN) ASHTOLA EXPLORATION COMPANY,INC. 12759 ALLALA-GARCIA PEARSALL (AUSTIN CHALK) HILL PRODUCTION COMPANY NO. 2 13158 ALLAR SEIDEL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17014 ALLEE PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14888 ALLEE DIM C BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15577 ALLEE UNIT A BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15313 ALLEE UNIT B BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15563 ALLEE UNIT D BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15407 ALLEE UNIT E BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15320 ALLEE-BOWMAN UNIT PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14974 ALLEN PANDORA, NW (AUSTIN CHALK) TIZA ENERGY, INC. 12250 ALLEN PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15906 ALLEN SALT FLAT B. J. P. OPERATING 02629 ALLEN & TILLER SALT FLAT B. J. P. OPERATING 01525 ALLEN -A- 10H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14700 ALLEN MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15559 ALLEN TRUST UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16691 ALLEN, ALICE SALT FLAT B. J. P. OPERATING 01449 ALLEN, J. E. -A- LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 03671 ALLEN, J. E. -A- H 1ST LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14561 ALLEN, J. E. -B- LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 02272 ALLEN, J. E. "A" 12H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14892 ALLEN, J.E. -A- 11H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14590 ALLEN, J.E. 'A' WILDCAT TEXAS PETROLEUM INVESTMENT CO. 13797 ALLEN, VIRGIL ET AL SALT FLAT CAIN, LESLIE L. 06231 ALLERKAMP PEARSALL (AUSTIN CHALK) JENEX PETROLEUM CORPORATION 13386 ALLERKAMP, ERNEST E. PEARSALL (AUSTIN CHALK) JENEX PETROLEUM CORPORATION 03939 ALLERKAMP, ERNEST E. PEARSALL (NAVARRO SAND) JENEX PETROLEUM CORPORATION 14516 ALLISON, J.P. SALT FLAT, WEST EAGLE FORD OIL CO., INC. 08140


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ ALONZO PEELER A INDIO TANKS (PEARSALL) EOG RESOURCES, INC. 17243 ALONZO, CLARENCE MINERVA-ROCKDALE 94 OPERATING, LP 02391 ALPHA SWD AUSTIN PIERCE (AUSTIN CHALK) HECKMANN WATER RESOURCES(CVR)INC 16340 ALPHA WARE BRISCOE RANCH (EAGLEFORD) SANCHEZ OIL & GAS CORPORATION 15792 ALSTON, GEORGE ET AL ACLETO CREEK (POTH B) JIMCO ENERGY INC. 09508 ALTA VISTA UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16946 ALTITO A EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16117 ALTITO B EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16963 ALTITO C EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16852 ALTITO D 302A EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17278 ALTSMAN BATEMAN (AUSTIN CHALK) TRINIDAD PETROLEUM, INC. 12172 ALTSMAN, CHARLES "B" BATEMAN (AUSTIN CHALK) GEOMEG ENERGY OPERATING CO., LLC 13283 ALVARADO FAIRFIELD GREAT PLAINS RESOURCES, INC. 12228 ALVARADO, J. FAIRFIELD GENIE OIL COMPANY "A" 10496 ALVIN MOCZYGEMBA A EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16682 AMBROSE URBANCZYK EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 17287 AMERICAN ENERGY MANN PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 12880 AMERITEX-ROMA ELAINE PALMERAS (OLMOS) TEXOKAN OPERATING, INC. 13792 AMG CHATO 25 C SUN T S H (OLMOS) LEWIS PETRO PROPERTIES, INC. 14927 ANDERSON NIXON SUMMIT ENERGY OPERATING, CO. 14002 ANDERSON PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, INC. 15091 ANDERSON-STONE DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15630 ANDERSON, C. (CHEVRON) DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02722 ANDERSON, C. (CHEVRON) DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02775 ANDERSON, C. 1H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14646 ANDERSON, C. 2-H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14876 ANDERSON, C.W. STAPLES CALTEX ENERGY CO. 06964 ANDERSON, CERSEY DARST CREEK (BUDA) GARRISON LTD. 02763 ANDERSON, JAMES D. SOMERSET GREAT PLAINS RESOURCES, INC. 10871 ANDERSON, L. DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02756 ANDERSON, L. DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02797 ANDERSON, NILE N. SPILLER AUSTIN OPERATING, LLC. 01677 ANDERSON, TOM DARST CREEK (BUDA) P.S.N. PETROLEUM, INC. 03179 ANGEL -B- MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 13595 ANGEL -B- MINERVA-ROCKDALE VICEROY PETROLEUM, LP 14792 ANGELL, J. MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 03121 ANGERMILLER, E.L. TAYLOR-INA V/J OIL COMPANY 09893 ANHAISER PEACH CREEK (AUSTIN CHALK) CML EXPLORATION, LLC 17091 ANIOL EAGLEVILLE (EAGLE FORD-1) MUELLER EXPLORATION, INC. 16374 ANNA NIXON IPACT 12305 ANNIE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15948 ANSCO TRUST ET AL JOURDANTON (RECKLAW) WSM 08578 ANTHONY EAST UNIT 1 EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16085 ANTHONY FOREST PRODUCTS A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 17056 ANTHONY WEST UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16169 ANTON URBANCZYK EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16461 AOUDAD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15528 APPLE CELLAR UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17187 APPLEWHITE, SAM SOMERSET BRANDER, SAM H. 11714 APPLING TRUST TRI BAR, NORTH (OLMOS) LEWIS PETRO PROPERTIES, INC. 10082 APPLING 9A SUN T S H (OLMOS) LEWIS PETRO PROPERTIES, INC. 14822


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ APPLING 902 SUN T S H (OLMOS) LEWIS PETRO PROPERTIES, INC. 14857 APPLING-RABB DUNLAP TEXSTAR OIL & GAS, LLC 00514 APPLING, C. D. SPILLER DELRAY OIL, INC. 01692 APPLING, C. F. DUNLAP B. J. P. OPERATING 00524 APPLING, C. F. DUNLAP SHEFTS & SHEFTS, INC. 00526 APPLING, C. F. /RABB/ DUNLAP K AND R OPERATING 03675 APPLING, C. F. ESTATE DUNLAP K AND R OPERATING 02028 APPLING, C. O., ESTATE SPILLER QUEST EMG, INC. 01680 APPLING, CARL W. DARST CREEK (BUDA) GAUGE OIL COMPANY 02755 APPLING, COLLIE DUNLAP KIDD PRODUCTION CO. 02150 APPLING, COLLIE B. DUNLAP KIDD PRODUCTION CO. 03775 APPLING, COLLIE B. DUNLAP SHEFTS & SHEFTS, INC. 03802 APPLING, GUS SPILLER PRONTO SERVICES 01690 APPLING, HESTER DUNLAP FIVE STAR ENERGY, INC. 03803 APPLING, ROSS DUNLAP SHEFTS & SHEFTS, INC. 03804 APPLING, W. A. SPILLER EAGLE FORD OIL CO., INC. 01694 APPLING, W. A. SPILLER GINCO OPERATING CO. 01667 APPLING, W.A. -A- SPILLER TRI-W OIL 05356 APPLING, WILLIE DUNLAP AUSTIN OPERATING, LLC. 03703 APPLING, WILLIE, -B- DUNLAP AUSTIN OPERATING, LLC. 03891 ARAIZA, KEVIN S. FIRST SHOT (AUSTIN CHALK) WOOLDRIDGE OIL & GAS 12885 ARC-LARK JACOB J&J OIL 15011 ARENA ROJA DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16100 ARENA ROJA UNIT F DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16139 ARLEDGE RANCH UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16362 ARMINIUS ENERGY TRUST BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 15274 ARMSTRONG SOMERSET PETROSAURUS, INC. 11150 ARMSTRONG UNIT FAIRFIELD BAR M PETROLEUM CO. 06358 ARMSTRONG/KLEMCKE UNIT SOMERSET CALK OIL COMPANY 07624 ARMSTRONG, ARTHUR JR. SOMERSET GINCO OPERATING CO. 07945 ARN EF EAGLEVILLE (EAGLE FORD-1) SWIFT ENERGY OPERATING, LLC 15910 ARNOLD PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 04743 ARNOLD & ZAESKE UNIT SUTIL (BUDA) BLOEMER OIL AND GAS 05932 ARNOLD -A- PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 04793 ARNOLD A UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15942 ARNOLD B UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15943 ARNOLD C UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16243 ARNOLD D UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16303 ARNWINE, I. MINERVA-ROCKDALE SCHNEIDER, ERNEST 02174 ARROW HEAD SALT FLAT ARNOLD OIL PROPERTIES, L.L.C. 14771 ARROW-HILDEBRAND #4 PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 13724 ARROYO ROBLE LEONA (ELAINE) GENESIS ST OPERATING LLC 15324 ARTHUR UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16722 ARZ UNIT G DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16144 ASH, LOUISE KENS (SERPENTINE) R & S OIL PRODUCTION CO. 10351 ASHER MINERVA-ROCKDALE OMNI OIL & GAS, INC. 08953 ASHERTON NORTH UNIT BRISCOE RANCH (EAGLEFORD) LONESTAR OPERATING, LLC 17037 ASHERTON SOUTH UNIT BRISCOE RANCH (EAGLEFORD) LONESTAR OPERATING, LLC 17038 ASHERTON UNIT A BRISCOE RANCH (EAGLEFORD) NEWFIELD EXPLORATION COMPANY 17161 ASHLEY, CHARLES MILANO (PECAN GAP) PEMBERTON, W. C. OIL CO., INC. 06457 ASSEMBLY OF GOD CHURCH UNIT SALT FLAT KIDD PRODUCTION CO. 03062


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ ASTRO, GARCIA PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 06518 ATASCOSA SWD FASHING (EDWARDS LIME -B-) AMERICAN DISPOSAL SERVICES,LTD 17047 ATASCOSA SWD JOURDANTON HIGH SIERRA WATER-EAGLE FORD,LLC 17180 ATASCOSA 601 UNIT "A" EAGLEVILLE (EAGLE FORD-1) CINCO NATURAL RESOURCES CORP. 15863 ATASCOSA 601 UNIT "B" EAGLEVILLE (EAGLE FORD-1) CINCO NATURAL RESOURCES CORP. 15796 ATKINSON LOMA ALTA CIMARRON ENGINEERING CORP. 14634 ATKINSON LOMA ALTA (4070) DEVON ENERGY PRODUCTION CO, L.P. 14453 ATKINSON, ELLEN LOMA ALTA ARAGON OIL & GAS, INC. 00970 ATKINSON, J. W. LOMA ALTA ARAGON OIL & GAS, INC. 00971 ATKINSON, J. W. -A- LOMA ALTA (3650) DEVON ENERGY PRODUCTION CO, L.P. 14427 ATKINSON, J.W. LOMA ALTA (WILCOX) ARANSAS DRLG & WORKOVER CO INC 13754 ATKINSON, J.W. LOMA ALTA (3650) DEVON ENERGY PRODUCTION CO, L.P. 09804 ATKINSON, J.W. -C- LOMA ALTA (WILCOX) COLOGNE PRODUCTION COMPANY 00972 ATWOOD WILDCAT WOODHAM OIL CORPORATION 12119 ATWOOD, KIRBY JEANIE (SERPENTINE) ATLAS OPERATING LLC 05291 AUBIN, C.T. PALMER (CARRIZO) SULO OIL COMPANY 05653 AUSTIN EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15461 AUSTIN, A. W. FAIRFIELD BLACKBIRD OIL & GAS, LLC. 09654 AVANT -A- SOMERSET GREAT PLAINS RESOURCES, INC. 10965 AVANT -B- SOMERSET GREAT PLAINS RESOURCES, INC. 10966 AVANT -C- SOMERSET GREAT PLAINS RESOURCES, INC. 10967 AVANT -D- SOMERSET GREAT PLAINS RESOURCES, INC. 10968 AVANT -E- SOMERSET GREAT PLAINS RESOURCES, INC. 11307 AVANT -F- SOMERSET GREAT PLAINS RESOURCES, INC. 11156 AVANT B PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 13909 AVANT NORTH LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17140 AVANT NORTH UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17158 AVANT-MASSEY PEARSALL (AUSTIN CHALK) EXPRESS OIL AND GAS 12609 AVANT-MASSEY "A" PEARSALL (AUSTIN CHALK) EXPRESS OIL AND GAS 12658 AVANT, J. R. -B- PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 12676 AVANT, J. R. -B- #1 PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 14356 AVANT, J.R. PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 12275 AXIS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15723 AYALA, ARTURO PEARSALL (AUSTIN CHALK) CHIODO CORP. 07426 AYERS LA VERNIA LAMBECK PETROLEUM, LLC 11798 AZTEC BETTY A TAYLOR-INA AZTEC DRILLING & OPERATING, LLC 17182 AZTEC GE TAYLOR-INA AZTEC DRILLING & OPERATING, LLC 17202 AZTEC OSCAR C TAYLOR-INA AZTEC DRILLING & OPERATING, LLC 17137 AZTEC OSCAR D TAYLOR-INA AZTEC DRILLING & OPERATING, LLC 17222 AZTEC WILSON 'P' UNIT 2 TAYLOR-INA AZTEC DRILLING & OPERATING, LLC 16536 AZTEC WILSON P TAYLOR-INA AZTEC DRILLING & OPERATING, LLC 16279 AZTEC WOODS B ADAMS (BUDA) AZTEC DRILLING & OPERATING, LLC 17265 AZTEC-SCHMIDT S TAYLOR-INA AZTEC DRILLING & OPERATING, LLC 15590 AZTEC-SCHWEERS TAYLOR-INA AZTEC DRILLING & OPERATING, LLC 15358 AZTEC-WILSON TAYLOR-INA AZTEC DRILLING & OPERATING, LLC 15166 AZTEC-WILSON A TAYLOR-INA AZTEC DRILLING & OPERATING, LLC 15683 AZTEC-WOODS ADAMS (BUDA) AZTEC DRILLING & OPERATING, LLC 15519 B.J. TOWNES UNIT LYTTON SPRINGS ROYAL TEXAS PETROLEUM 14362 B&B UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15464 BABAN MINERVA-ROCKDALE OMNI OIL & GAS, INC. 16350 BACAK JOURDANTON, N. (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 10733


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BACON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17320 BAENZIGER-ADCOCK UNIT NIXON ALCOR ENERGY, INC. 12438 BAGBY, J.H. PEARSALL (AUSTIN CHALK) SABINAL RESOURCES, INC. 12490 BAGGETT BIG WELLS (SAN MIGUEL) RILEY EXPLORATION, LLC 04594 BAGGETT, J. B. PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 12580 BAGGETT, J.B. BIG WELLS (SAN MIGUEL) MCDANIEL COMPANY, INC., THE 10501 BAGGETT, JEFF PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 05414 BAGGETT, JOHN B EAGLEVILLE (EAGLE FORD-1) RILEY EXPLORATION, LLC 15486 BAGGETT, JOHN B. BIG WELLS (SAN MIGUEL) CIVRON PETROLEUM RES., LLC 04280 BAGGETT, JOHN B. -A- PEARSALL (AUSTIN CHALK) OMNI OPERATING COMPANY(A) 05177 BAGGETT, JOHN B. -B- PEARSALL (AUSTIN CHALK) OMNI OPERATING COMPANY(A) 05623 BAILEY-ADAMS LULING-BRANYON AUSTIN OPERATING, LLC. 06189 BAILEY, E.N. SOMERSET PETROSAURUS, INC. 10833 BAILEY, EVERETT N. SOMERSET PETROSAURUS, INC. 10832 BAILEY, J.M. -A- SOMERSET RAINER ENERGY, INC. 10753 BAILEY, J.M. -B- SOMERSET STOKES, O. K. 10754 BAILEY, JAMES TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 01718 BAILEY, JAMES & REGINA TAYLOR-INA CVS PRODUCTION, LLC. 07061 BAILEY, JAMES & REGINA SR. TAYLOR-INA CVS PRODUCTION, LLC. 08686 BAILEY, JAMES JR. TAYLOR-INA TAMPKE SERVICE CO. 09770 BAILEY, JAMES M. SOMERSET PETROSAURUS, INC. 11208 BAILEY, JOHN E. FAIRFIELD GREAT PLAINS RESOURCES, INC. 06221 BAIN PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 15977 BAIN PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 05550 BAIN, F. L. PANDORA, NW (AUSTIN CHALK) SR OIL AND GAS, L.L.C. 11788 BAIN, FRANK L. REDING (POTH -B-) JIMCO ENERGY INC. 03527 BAIN, J.H. NIXON BAIN PRODUCTION, L.P. 12312 BAIN, J.H. NIXON (BUDA) BAIN PRODUCTION, L.P. 14082 BAIN, J.H. JR. PRESSLY-CAPT (POTH B) PRESSLY OIL INTEREST, INC. 11868 BAIN, T. W. BIG FOOT JENEX PETROLEUM CORPORATION 00082 BAIN, TRAVIS W. BIG FOOT LONGHORN MINERAL CORPORATION 00044 BAIRD HEIRS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16258 BAIRS SALT FLAT, WEST BAIR'S LEASE SERVICE, INC. 07769 BAKER WILDCAT WESTERN ENERGY GROUP, LLC 14723 BAKER NIXON AP TEXAS ENERGY, INC. 13955 BAKER SOMERSET EVERETT OIL 11442 BAKER -C- SOMERSET EVERETT OIL 11745 BAKER -C- SOMERSET JB OIL & GAS WELL SERVICE 12181 BAKER "A" DUNLAP GREAT PLAINS RESOURCES, INC. 03847 BAKER "8" LIZARD CREEK (PETTUS) CIMAREX ENERGY CO. OF COLORADO 13940 BAKER DEFOREST UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16046 BAKER NO. 2 SOMERSET JB OIL & GAS WELL SERVICE 12191 BAKER TRACT -A- SOMERSET GREAT PLAINS RESOURCES, INC. 11908 BAKER TRACT -B- SOMERSET GREAT PLAINS RESOURCES, INC. 12045 BAKER, A J 15H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14574 BAKER, A J 13-H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14550 BAKER, A J 7 ST-H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14446 BAKER, A. J. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01055 BAKER, A. J. 16-H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14861 BAKER, A.J. 12H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14592 BAKER, A.J. 14H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14575


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BAKER, A.J. 2HST LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14619 BAKER, C. S. NIXON SUMMIT ENERGY OPERATING, CO. 11762 BAKER, CHARLES BIG FOOT JENEX PETROLEUM CORPORATION 00083 BAKER, D. D. DARST CREEK (BUDA) GARRISON LTD. 02735 BAKER, E.M. SOMERSET GASSCO PETROLEUM CORPORATION 11642 BAKER, E.M. -B- SOMERSET PETRO-TEX ENERGY & EXPL.CO.,INC. 12111 BAKER, E.M. "A" SOMERSET SEEKER OIL COMPANY, INCORPORATED 11899 BAKER, FRANCIS LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 07970 BAKER, LACY PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 05308 BAKER, MYLA, EST. JAKE HAMON, EAST (GOVT WELLS) CIMAREX ENERGY CO. OF COLORADO 02882 BAKER, MYLA, ESTATE JAKE HAMON, E. (ARGO 2600) CIMAREX ENERGY CO. OF COLORADO 07271 BAKER, MYLA, ESTATE JAKE HAMON, EAST (PETTUS) CIMAREX ENERGY CO. OF COLORADO 02835 BAKER, TOM H., -C- DUNLAP GREAT PLAINS RESOURCES, INC. 03903 BALCH, M. W. MINERVA-ROCKDALE NORTH TEXAS ENERGY,INC. 08171 BALL, H. A. FAIRFIELD CRYSTAL RESOURCES, INC 02535 BALL, J. J. IMOGENE, S. (CARRIZO) BAY ROCK OPERATING COMPANY 00694 BALL, JAMES LA VERNIA THREE J ENERGY, INC. 00842 BALL, SAM LA VERNIA NEW BEGINNING 00837 BALLARD -B- DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 11734 BALLARD "B" DALE-MCBRIDE DELANEY OIL AND GAS COMPANY 13814 BALLARD, DON DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 12038 BALLARD, LURLINE DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 12063 BANDERA ALKEK TWO M (GEORGETOWN) ESPADA OPERATING LLC 14411 BANDERA-ALKEK M.F. JAKE LAWLESS (EDWARDS LIME) ESPADA OPERATING LLC 15212 BANDY LULING-BRANYON LULING O&G LLC 10044 BANDY "A" SPILLER BAIR'S LEASE SERVICE, INC. 06060 BANDY "B" SPILLER BAIR'S LEASE SERVICE, INC. 06322 BANDY, L. R. SPILLER DELRAY OIL, INC. 01670 BANKHEAD EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 15499 BANKHEAD-HOLMES EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 15531 BAPTIST CEMETERY SOMERSET JAMCO OIL 02916 BAPTIST FOUNDATION EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16858 BAR INVERTED T UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15567 BAR NONE EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 15594 BAR NONE C EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16754 BAR NONE E EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16172 BAR NONE F EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16095 BARBARA PEARSALL (AUSTIN CHALK) DIMMIT COUNTY SWD, LLC 13501 BARBER, S. L. LOVELL DALE-MCBRIDE FOYORO ENERGY, LLC 04111 BARCLAY CHITTIM (GEORGETOWN) TXCO RESOURCES INC. 09144 BARGER RANCH A UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16648 BARGFREDE, W. LA VERNIA TEXAS COASTAL RESOURCES LLC 00860 BARING EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16696 BARKER SOMERSET GREAT PLAINS RESOURCES, INC. 11154 BARKER -A- SOMERSET GREAT PLAINS RESOURCES, INC. 10970 BARKER -B- SOMERSET TRANSAMERICA ENERGY CORP. 10971 BARKER -C- SOMERSET GREAT PLAINS RESOURCES, INC. 10973 BARKER -S- SOMERSET GREAT PLAINS RESOURCES, INC. 10942 BARKER, PERRY SOMERSET GREAT PLAINS RESOURCES, INC. 07335 BARKLEY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17060 BARLITE, INC. FAIRFIELD DRACHEN OIL COMPANY 09690


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BARNES WILDCAT BLACK JACK SERVICES, L.L.C. 13757 BARNES, P.H. SOMERSET UNDERBRINK OIL 07543 BARNES, W.J. MARCELINA CREEK (BUDA) PONTIAC OIL, INC. 12958 BARNETT, W.L. ET AL PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 13405 BARNHART (EF) EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15397 BARNHART (EF) A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16380 BARNHART (EF) B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17065 BARNHART (EF) C EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16599 BARNHART (EF) D EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17171 BARNHART (EF) E EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17165 BARNHART (EF) G EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17334 BARNHART (EF) H EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16813 BARNHART (EF) K EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17273 BARNHART (EF) L EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17333 BARNHART "A" FIRST SHOT (AUSTIN CHALK) BARNHART CO. 13092 BARNHART NORTH EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16007 BARNHART UNIT C EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 16248 BARR, M.B. CHICON LAKE M B OIL 07683 BARRE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17308 BARRERA, CARLOS M. CHICON LAKE MIG-LEO OIL CO. 07206 BARRETT UNIT PEARSALL (AUSTIN CHALK) SEDCO RESOURCES INC 12779 BARRY -C- FAIRFIELD GENIE OIL COMPANY "A" 07249 BARTA PILGRIM (AUSTIN CHALK) BYRD OPERATING COMPANY 11834 BARTLETT BATESVILLE (BRACERO) WILLIAMSON OPERATING CO. 04270 BARTLETT TRUST -A- BATESVILLE, SW. (SAN MIGUEL) GOLDEN CHILD, INC. 04797 BARTLETT, CINDY GALBA (BARTOSH) ATASCOSA EXPLORATION, LLC 14903 BARTLETT, D.J. SOMERSET CIBOLO PRODUCTION, LLC 10901 BARTLING, H. F. LARREMORE CENTEX PIPE & EQUIPMENT, INC. 00809 BASHAM EAGLEVILLE (EAGLE FORD-1) TIDAL PETROLEUM, INC. 15374 BASIN LEONA PEARSALL (AUSTIN CHALK) QUATRO OIL AND GAS, INC. 12482 BASIN-LORI PEARSALL (AUSTIN CHALK) QUATRO OIL AND GAS, INC. 12476 BASIN-SCOTTY PEARSALL (AUSTIN CHALK) BASIN RESOURCES CORPORATION 12618 BASIN-VEARL SNEED PEARSALL (AUSTIN CHALK) QUATRO OIL AND GAS, INC. 12574 BASKIN, A.H. ET AL MINERVA-ROCKDALE RUBAC TECHNICAL SERVICES 06687 BASSETT UNIT DUNLAP OFFSPRING WELL SALVAGE 07882 BASSI-ALLISON SALT FLAT EAGLE FORD OIL CO., INC. 09664 BASSI-BOHANAN SALT FLAT EAGLE FORD OIL CO., INC. 07433 BASSI-ERIN SALT FLAT EAGLE FORD OIL CO., INC. 06491 BASSI-GARRETT SALT FLAT EAGLE FORD OIL CO., INC. 07122 BASSI-KILGORE SALT FLAT EAGLE FORD OIL CO., INC. 08371 BASSI-MAXWELL SALT FLAT EAGLE FORD OIL CO., INC. 07245 BASSI, AL. SALT FLAT BAIR'S LEASE SERVICE, INC. 07290 BATEMAN (AUSTIN CHALK) UNIT BATEMAN (AUSTIN CHALK) FOYORO ENERGY, LLC 08490 BATES -B- MINERVA-ROCKDALE CHISHOLM OIL INVESTMENTS 09283 BATES, HUBERT L. FLORESVILLE, S. (AUSTIN CHALK) LUCAS ENERGY, INC. 10110 BATES, R. M. MINERVA-ROCKDALE NAVARRO EXPLORATION CO., INC. 06124 BATESVILLE FARMING CO JUDGE MILLS (ANACACHO) TEXOKAN OPERATING, INC. 07550 BATTE PEMBERTON (NAVARRO) RIMROCK PETROLEUM, INC. 07500 BATTE-HICKMAN WILDCAT COLBY OF NEVADA, INC. 12634 BATTE, MARY BELLE MINERVA-ROCKDALE CHISHOLM OIL INVESTMENTS 03190 BATTE, R.L. MINERVA-ROCKDALE TAHITI PTRS ENRGY SOLUTIONS CORP 09384


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BAUER LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16078 BAUER, FRITZ MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 01190 BAYLOR MINERVA-ROCKDALE OMNI OIL & GAS, INC. 16376 BAYOU ROUGE UNIT A ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16132 BAYOU ROUGE UNIT B ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15611 BAYOU ROUGE UNIT C ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15629 BAYOU ROUGE UNIT G ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16907 BAYOU ROUGE UNIT I ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16894 BB UNIT A EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 17292 BEALE, BOB ET UX PEACH CREEK (AUSTIN CHALK) ATLAS FUEL SUPPLY, LTD. 13241 BEALL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17307 BEAR CLAUSE RANCH EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15337 BEAR CLAUSE RANCH A UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 17052 BEARD CHEROKEE (NAVARRO) SHOREHAM OIL & GAS COMPANY, INC. 04077 BEARD M-E (T-535) CHEROKEE (NAVARRO) VICEROY PETROLEUM, LP 14363 BEARD, HENRY B. A.W.P. (OLMOS) TREK RESOURCES, INC. 10451 BEARD, L. ET AL CHEROKEE (NAVARRO) TEN-KEY INC. 04128 BEATY, C. H. LYTTON SPRINGS GAUGE OIL COMPANY 01162 BEATY, C. H., ETAL LYTTON SPRINGS GAUGE OIL COMPANY 01155 BEATY, CLYDE LYTTON SPRINGS GAUGE OIL COMPANY 03695 BEATY, CLYDE H. LYTTON SPRINGS ROSE ET AL OIL CO., INC. 01163 BECK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17129 BECK UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15693 BECK, K. L. ECKERT BRIGHT HAWK OPERATING COMPANY 14242 BECK, K. L. ECKERT GINCO OPERATING CO. 00541 BECKMAN, M. A. TWO FINGERS, S. (WILCOX 5550) VIRTEX OPERATING COMPANY, INC. 14434 BEDFORD PHOENIX TDS CARROL SOUTHRIDGE OPERATING COMPANY 14992 BEELER EAGLEVILLE (EAGLE FORD-1) CRIMSON EXPLORATION OPER., INC. 16363 BEELER, R. F. PEARSALL (AUSTIN CHALK) CIBOLO ENERGY OPERATING, INC. 05236 BEELER, R. F. "A" PEARSALL (AUSTIN CHALK) CIBOLO ENERGY OPERATING, INC. 05654 BEELER, R. F. "C" PEARSALL (AUSTIN CHALK) CIBOLO ENERGY OPERATING, INC. 13184 BEEVER PEARSALL (AUSTIN CHALK) LEMON, RICHARD G. 06708 BEEVER PEARSALL (AUSTIN CHALK) OMBER PETROLEUM & ENERGY CORP. 04678 BEEVER/LITTLE PEARSALL (AUSTIN CHALK) TEXAN PRODUCTION COMPANY, INC. 08218 BEHLEN-STEPHENS 2 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17244 BEHLEN-TALLEY 2 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17233 BEHRENS, CHARLES LA VERNIA DOEGE, DONALD 05878 BEHRENS, CHARLES LA VERNIA (AUSTIN CHALK) STEBAR ENERGY CORPORATION 08875 BEINHORN BRISCOE RANCH (OLMOS) CRIMSON ENERGY PTNRS III, L.L.C. 15039 BEK UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16379 BEL UNIT FAIRFIELD PARK AVENUE RESOURCES, INC. 06370 BELL SALT FLAT, WEST E. T. OIL COMPANY 06676 BELL UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16307 BELL UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16146 BELL, EDDIE SOMERSET CALK OIL COMPANY 10909 BELL, RUFUS D. KAYE (NAVARRO) EMBREY OIL PRODUCTION CO. 02324 BELLOWS WILDCAT LOIN ENERGY CORPORATION 14720 BELLOWS COOKE, WEST (OLMOS) BEACHTEX OIL COMPANY, LLC 14865 BELT, W.A. -III- PECAN GAP (5050) BELMAR OIL & GAS, INC. 10198 BELT, W.A. III MILBUR (NAVARRO) BELMAR OIL & GAS, INC. 10397 BENDELE, A. H. TAYLOR-INA OILEX INT'L INVESTMENTS, INC. 03439


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BENDELE, HELEN, ETAL TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 01720 BENDELE, HENRY TAYLOR-INA CARDINAL ENERGY COMPANY 03602 BENDELE, W. A. TAYLOR-INA CARDINAL ENERGY COMPANY 03617 BENDER MINERVA-ROCKDALE 94 OPERATING, LP 16357 BENGSTON, AUGUSTA, EST. NEW SWEDEN ELECTRAGAS, INC. 01285 BENHAM, C. G., FEE SALT FLAT SHEFTS & SHEFTS, INC. 03027 BENKE, JOHN PEARSALL (AUSTIN CHALK) FORTUNE OPERATING COMPANY 12592 BENNER, HERBERT SALT FLAT KIDD PRODUCTION CO. 02918 BENNETT PEARSALL (AUSTIN CHALK) GOLDEN CHILD, INC. 12714 BENNETT PEARSALL (AUSTIN CHALK) LONE STAR OPERATING COMPANY 13190 BENNETT PEARSALL (AUSTIN CHALK) TEKNA SYNERGY CORPORATION 13753 BENNETT SOMERSET AMINEX USA, INC. 10974 BENNETT BROS -A- PEARSALL (AUSTIN CHALK) FORTUNE OPERATING COMPANY 12534 BENNETT BROS. PEARSALL (AUSTIN CHALK) LONE STAR OPERATING COMPANY 12873 BENNETT BROS. PEARSALL (AUSTIN CHALK) OFFSPRING WELL SALVAGE 12768 BENNETT BROS. -B- PEARSALL (AUSTIN CHALK) FORTUNE OPERATING COMPANY 12535 BENNETT JACKEL UNIT PEARSALL (AUSTIN CHALK) KILLAM OIL CO., LTD. 16391 BENNETT-MORALES UNIT PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 04820 BENNETT-SHINER UNIT PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 14474 BENSON SOMERSET MORE TEXAS OIL 12042 BENSON MINERALS SOMERSET UNDERBRINK OIL 10750 BERDOLL PEARSALL (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 12944 BERDOLL DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16620 BERDOLL UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16456 BERGEY-BOENING UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15704 BERMUDA PEARSALL (AUSTIN CHALK) AMPAK OIL COMPANY 13043 BERMUDA PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15176 BERRY FAMILY RANCHES BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15408 BERRY-HOUSE FAIRFIELD OILEX INT'L INVESTMENTS, INC. 07570 BERRY-LEHMAN "A" PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 12208 BERRY, J.H. PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 12495 BERRY, JOE PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 06512 BERTA UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16850 BERYL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15515 BETA SWD AUSTIN PIERCE (AUSTIN CHALK) BASIC ENERGY SERVICES, L.P. 17138 BETCHAN MINERVA-ROCKDALE S&JB, LLC 10597 BETCO-AVANT UNIT PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 13801 BETHARD, B.E. MINERVA-ROCKDALE BABCO OIL & GAS, LLC 11500 BETTY BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 12135 BETTY BULLOH (NAVARRO) VICEROY PETROLEUM, LP 17258 BETTY PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15235 BETTY WILSON BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15288 BIEDIGER, FERDINAND BIG FOOT OILEX INT'L INVESTMENTS, INC. 14074 BIESENBACH FAIRFIELD SIMCO OIL 10708 BIG EYE UNIT WILDCAT ANADARKO E&P ONSHORE LLC 14328 BIG FOOT OLMOS -B- UNIT BIG FOOT U.S. JIMOIL CORPORATION 04023 BIG FOOT OLMOS B SAND UNIT BIG FOOT JENEX PETROLEUM CORPORATION 03380 BIG FOOT OLMOS D SAND UNIT BIG FOOT (OLMOS D-3 SAND) JENEX PETROLEUM CORPORATION 14988 BIG KAHUNA UNIT PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 13942 BIG WELLS /SAN MIGUEL/ UNIT BIG WELLS (SAN MIGUEL) TEXAS AMERICAN RESOURCES COMPANY 04421 BIG WELLS LO. SAN MIGUEL UNIT BIG WELLS(SAN MIGUEL, LO., EAST) TEXAS AMERICAN RESOURCES COMPANY 04208


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BIG WELLS SOUTH DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15593 BIG WELLS UNIT PEARSALL (AUSTIN CHALK) KILLAM OIL CO., LTD. 16019 BIGGS, A.F. SALT FLAT, WEST CENTEX PIPE & EQUIPMENT, INC. 06913 BIGGS, A.W. SALT FLAT TXLA ENERGY, INC. 08320 BIGHORN UNIT INDIO TANKS (PEARSALL) EOG RESOURCES, INC. 17117 BILL WILSON ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16843 BILLIE ANN SERBIN (WILCOX) THREE FORKS OPERATING CO, LLC 11931 BILLINGS FIRST SHOT (AUSTIN CHALK) CLARON CORPORATION 13592 BILLINGS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16971 BILLINGS-GERHART UNIT FIRST SHOT (AUSTIN CHALK) ENDEAVOR ENERGY RESOURCES L.P. 13255 BILLINGS, A. A.W.P. (OLMOS) XTO ENERGY INC. 09278 BILLY HINDES-SOUTH UNIT BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 16923 BILSKY UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15720 BILSKY-BRISTOL UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15858 BILSKY-BROWN UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15845 BIRD-KING-HALL UNIT STOCKDALE, N. (CHALK, UPPER) ALCOR ENERGY, INC. 13921 BIRD-LORENZ ACLETO CREEK (POTH B) PACE OIL AND GAS COMPANY 09066 BIRD-LORENZ UNIT NIXON ALCOR ENERGY, INC. 14210 BIRD-LORENZ UNIT PANDORA, NW (AUSTIN CHALK) DULA PRODUCTION, LLC 12090 BIRD, BETTY SUE ACLETO CREEK (POTH B) ORIGIN PRODUCTION COMPANY, INC. 07251 BIRD, BETTY SUE ACLETO CREEK (POTH C) ORIGIN PRODUCTION COMPANY, INC. 08667 BIRD, BETTY SUE FRODEIN (GEORGETOWN) ORIGIN PRODUCTION COMPANY, INC. 13049 BIRDWELL, R.R. JOURDANTON (BUDA) EOG RESOURCES, INC. 14387 BIRY TRACT II TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 04541 BIRY TRSCT III TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 10207 BIRY, ALFRED TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06119 BIRY, FRANK TAYLOR-INA NAILS OPERATING COMPANY LLC 06405 BIRY, FRANK -A- TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06585 BIRY, FRANK -H- TAYLOR-INA NAILS OPERATING COMPANY LLC 04508 BIRY, FRANK B TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 05751 BIRY, FRANK C. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 05752 BISON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17151 BLACK, OSCAR MINERVA-ROCKDALE PRICE OPERATING, LLC 02401 BLACK, R.L. LA VERNIA LOCKER RANCH 06020 BLACKBUCK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15724 BLACKBURN WILDCAT DAWSEY OPERATING COMPANY 14044 BLACKBURN-TRAMMELL MILBUR, N. (WILCOX 2660) VICEROY PETROLEUM, LP 03836 BLACKBURN, CLIFF MILBUR, N. (WILCOX 2660) HOUSTON PETROLEUM COMPANY 09437 BLACKMAR, JIM FEE DUNLAP EAGLE FORD OIL CO., INC. 07688 BLACKMON UNIT BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15582 BLACKSTONE EAGLEVILLE (EAGLE FORD-1) TALISMAN ENERGY USA INC. 16970 BLACKWELL, JOE E. -A- LULING-BRANYON GINCO OPERATING CO. 01112 BLACKWELL, RAYMOND LULING-BRANYON LTX OIL COMPANY, L.L.C. 01111 BLACKWELL, S. M. LULING (EDWARDS) SOTOL ENERGY, INC. 02477 BLACKWELL, S. M. LULING-BRANYON SOTOL ENERGY, INC. 04847 BLACKWELL, S.M. -B- LULING-BRANYON SOTOL ENERGY, INC. 08489 BLAIN NIXON G & K OPERATING, LLC 09035 BLAKE, JAMES V., JR., ET AL FLORESVILLE, EAST CHANDLER, RANDALL 03609 BLAKELY, AGNES MILANO (PECAN GAP) EXPLORATION TECHNIQUES INC. 14576 BLAKEWAY UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15387 BLAKEWAY UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15739


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BLAKEWAY UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16246 BLAKEWAY UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16455 BLAKEWAY UNIT E DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16128 BLAKEWAY UNIT F DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16412 BLAKEWAY UNIT H DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16655 BLAKEWAY UNIT I DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16468 BLAKEWAY, ALBERTA BLAKEWAY (DIXON SAND) TDW EXPLORATION, LLC 07993 BLALACK ET. AL. UNIT PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 13567 BLALACK, ALVAN W. JR. "A" PEARSALL (AUSTIN CHALK) BOBCAT OPERATING 05199 BLALACK, ALVIN W. JR. "B" PEARSALL (AUSTIN CHALK) BOBCAT OPERATING 12845 BLANCHE M. WALL ET AL MILANO (PECAN GAP) HOUSTON PETROLEUM COMPANY 14469 BLAND, S.C. MINERVA-ROCKDALE BLAND, S.C. 06647 BLANTON, M. W. FAIRFIELD DIAMOND TRADING & PIPELINE CORP 02311 BLM A.W.P. (OLMOS) XTO ENERGY INC. 13952 BLOCH, ERICH LA VERNIA PERKINS, EUGENE O. 05988 BLOCK #19 UNIT #1 SALT FLAT BUBBA LYNN CRUDE 02967 BLOCK #22-ALEX #1 SALT FLAT W.W. ENERGY 03067 BLOCK #33-WATKINS #1 SALT FLAT W.W. ENERGY 03088 BLOCK #34-LEARY #1 SALT FLAT W.W. ENERGY 03054 BLOCK #35 SALT FLAT W.W. ENERGY 03141 BLOCK #36 SALT FLAT W.W. ENERGY 03048 BLOCK #38 SALT FLAT W.W. ENERGY 03155 BLOCK #56 SALT FLAT SHEFTS & SHEFTS, INC. 03124 BLOCK 37-UNIT #1 SALT FLAT W.W. ENERGY 03116 BLOCK 39 SALT FLAT SHEFTS & SHEFTS, INC. 11547 BLOCK 69 SALT FLAT SHEFTS & SHEFTS, INC. 11410 BLOCK 75 UNIT SALT FLAT SHEFTS & SHEFTS, INC. 07867 BLOCK 76 SALT FLAT SHEFTS & SHEFTS, INC. 10093 BLOCK 88 SALT FLAT SHEFTS & SHEFTS, INC. 11674 BLOCK, ERIC LA VERNIA PERKINS, EUGENE O. 00821 BLOCK, ERICH LA VERNIA SOURCE PETROLEUM INC. 00929 BLT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16449 BLT UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16315 BLUDAU EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 17061 BLUE STAR 604 SANER RANCH (SAN MIGUEL) BLUE STAR OPERATING COMPANY 14873 BLUE STAR-LIBERTY 35 SACATOSA (GEORGETOWN) SHELL WESTERN E&P 15078 BLUEBONNET MARCELINA CREEK (AUSTIN CHALK) SCHROEDER OIL PROPERTIES 10709 BLUMBERG FIRST SHOT (AUSTIN CHALK) COX & COX PRODUCTION CO. 13675 BLUMBERG NIXON RR VENTURES LIMITED PARTNERSHIP 12448 BLUMBERG ZION HILL (AUSTIN CHALK) CML EXPLORATION, LLC 17277 BMW, LTD GIDDINGS (AUSTIN CHALK-1) FIRST ROCK, INC. 07453 BNB PEACH CREEK (AUSTIN CHALK) DIAMOND M DRLG & EXPL CO. 15090 BOB HINDES EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16313 BOB ROTH UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16649 BOBBITT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16674 BOBBITT UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16918 BOBBITT UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16920 BODINE - JOSLIN DUNLAP B. J. P. OPERATING 03813 BOEDEKER LEASE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16089 BOENIG, R. L. FAIRFIELD BAR M PETROLEUM CO. 15868 BOENIG, R.L. FAIRFIELD PARK AVENUE RESOURCES, INC. 04557


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BOENING BROS. DAIRY SUTIL (REEF) FIRST ROCK, INC. 08438 BOHANNAN DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15625 BOHL, ANNIE BIG FOOT U.S. JIMOIL CORPORATION 00071 BOHL, ANNIE BIG FOOT (OLMOS D-3 SAND) U.S. JIMOIL CORPORATION 11479 BOHL, EDWARD A. CHICON LAKE HARDWICK, ROSS H. OIL COMPANY 08517 BOHL, EDWARD A. FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 09875 BOHL, EDWARD A. -C- CHICON LAKE HARDWICK, ROSS H. OIL COMPANY 12203 BOHLS NOACK CUTRER ENERGY 10419 BOLDT TRACT -A- SOMERSET PETROSAURUS, INC. 11697 BOLDT, ANGELINA LINNE (POTH -A- SAND) GRAMMER, JOHN, OIL ACCOUNT 00966 BOMBA, J. B. IMOGENE, SOUTHEAST GUINN OPERATING COMPANY, LLC 00703 BONANZA SOMERSET PAISANO PRODUCTION, INC. 10770 BOND FAIRFIELD 338 OIL & GAS, INC. 16392 BOND PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15716 BOND, FLOYD C. TAYLOR-INA GHISELLI OIL, INC. 02975 BONGO HUNTER UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17192 BONGO NORTH UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17259 BONHAM EZZELL SAN CAJO OIL COMPANY 00566 BONILLAS RANCH -A- SOMERSET LOPEZ, HECTOR S. 11124 BONILLAS RANCH -B- SOMERSET LOPEZ, HECTOR S. 11125 BONORDEN, MALCOLM KINGSBURY (BUDA LIME) GINCO OPERATING CO. 05829 BOOTH NIXON RR VENTURES LIMITED PARTNERSHIP 13027 BOOTH PEARSALL (AUSTIN CHALK) CRIMSON EXPLORATION OPER., INC. 14537 BOOTH RANCH PEARSALL (AUSTIN CHALK) TRUE ENERGY, INC. 12451 BOOTH UNIT PEARSALL (AUSTIN CHALK) CRIMSON EXPLORATION OPER., INC. 14450 BOOTH-BEELER PEARSALL (AUSTIN CHALK) CRIMSON EXPLORATION OPER., INC. 14616 BOOTH-MIDDLETON A UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 17035 BOOTH-MIDDLETON B UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 17036 BOOTH-WEAVER PEARSALL (AUSTIN CHALK) CRIMSON EXPLORATION OPER., INC. 12677 BOOTH, F. I. -C- PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 05255 BOOTH, F. I. "D" PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 05697 BOOTH, W PEARSALL (AUSTIN CHALK) CRIMSON EXPLORATION OPER., INC. 14569 BOOTHE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15952 BORCHERS PEACH CREEK (AUSTIN CHALK) MARANATHA OIL COMPANY 14349 BORCHERS KOENNING UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15920 BORCHERS TRUST UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15889 BORCHERS-BORCHERS UNIT PEACH CREEK (AUSTIN CHALK) SRJC ENTERPRISES, LLC 12747 BORCHERS, M. J. ET. AL. PEACH CREEK (AUSTIN CHALK) MARANATHA OIL COMPANY 13120 BORCHERS, O EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16124 BORDOVSKY, J. S. "A" BIG FOOT (OLMOS D-3 SAND) JENEX PETROLEUM CORPORATION 04373 BOREN BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 12021 BORGFELD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15254 BOSELEY, MINNIE HELEN I. KAYE (NAVARRO) TEXAS COASTAL RESOURCES LLC 08628 BOUCHER UNIT PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 13543 BOULDIN EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15773 BOULDIN GIDDINGS (AUSTIN CHALK-1) CARTER, J.E. ENERGY, INC. 07349 BOULDIN TRUST EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16745 BOULDIN TRUST-ROWELL EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17234 BOULDIN-MANFORD EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16942 BOULDIN, COLLIS CHRISTIAN (6800) PONTIAC OIL, INC. 12809 BOULDIN, PAULINE BOULDIN (RECKLAW B) SEGER RANCH OIL CO. 11506


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BOULDIN, PAULINE OIL UNIT #1 BOULDIN (1730) SEGER RANCH OIL CO. 04838 BOWDEN, O.M. LULING-BRANYON EXXCEL OPERATING COMPANY 12281 BOWERS, RUTH M. PEARSALL (AUSTIN CHALK) BRYMER, JACK CONTR. SERV. 13148 BOWIE -F- BUCHANAN CARDOZO TECHNOLOGIES, INC. 08071 BOWIE,-A- BUCHANAN CARDOZO TECHNOLOGIES, INC. 07628 BOWLES-NANCE UNIT PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, INC. 13560 BOWMAN PEARSALL (AUSTIN CHALK) BOTASCH OPERATING, LLC 14872 BOWMAN PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14851 BOWMAN SAINT THIRTEEN (OLMOS NO. 1) CARRIZO EXPLORATION, INC. 14949 BOWMAN -A- PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 15230 BOWMAN EAST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16726 BOWMAN RANCH THIRTEEN (AUSTIN) SEAGO PETROLEUM, INC. 12879 BOWMAN, MCLEAN "B" GOOD LUCK (SAN MIGUEL) FORZA OPERATING, LLC 05859 BOWMAN, MCLEAN "C" GOOD LUCK (SAN MIGUEL) FORZA OPERATING, LLC 05805 BOWMAN, RUTH M. BIG FOOT PRIDE ENERGY COMPANY 00115 BOWMAN, RUTH MCLEAN PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, INC. 14856 BOWMAN, RUTH MCLEAN THIRTEEN, EAST (3650 OLMOS) PINTO OIL CO. 05968 BOX PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15712 BOYD BROS BIG FOOT JB OIL & GAS WELL SERVICE 09851 BOYD, G. G. BRISCOE RANCH (EAGLEFORD) KERR-MCGEE OIL & GAS ONSHORE LP 15363 BOYD, G. G. PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 05350 BOYLES UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16029 BOYSEN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16107 BOZARTH BUCHANAN COLGIN OIL CO. 02094 BOZARTH, MATTIE BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 03396 BOZARTH, T. M. BUCHANAN GREAT PLAINS RESOURCES, INC. 00139 BOZKA EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15546 BOZO RANCH DUNLAP BLACKMAR, JIM OIL OPERATOR 11498 BRACERO TRANSPORTATION CO. BRACERO (ELAINE) FINLEY RESOURCES, INC. 04510 BRACERO TRANSPORTATION CO., INC. BRACERO (SEG 3 ELAINE UPPER) FINLEY RESOURCES, INC. 03061 BRACERO TRANSPORTATION CO., INC. BRACERO (SEG 4 ELAINE UPPER) FINLEY RESOURCES, INC. 03923 BRACEWELL, FRANK "A' PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 13868 BRACEWELL, FRANK "B" PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 13869 BRACKEN EAGLEVILLE (EAGLE FORD-1) TALISMAN ENERGY USA INC. 15838 BRACKEN "D" A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 14342 BRACKEN "G" A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 09169 BRACKEN "H" A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 14237 BRACKEN "I" A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 12182 BRACKEN ET AL A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 08288 BRACKEN RANCH A.W.P. (OLMOS) AWP OPERATING COMPANY 08593 BRADBERRY UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16603 BRADBERRY UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16539 BRADLEY-KEVIL MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 08481 BRADY, T. H. PENA CREEK (SAN MIGUEL 3RD) CUATRO PETRO CORP. 04335 BRADY, T. H. ESTATE PENA CREEK (SAN MIGUEL 3RD) CUATRO PETRO CORP. 04441 BRAMAN JACOB GLG OIL & GAS CORP. 00709 BRAMAN JACOB HARVEY, K. S. 02826 BRAND ET AL MILANO (AUSTIN CHALK) ERNEST OPERATING COMPANY 05858 BRAND, E. C. IMOGENE, SOUTHEAST BRYMER CONTRACTING INCORPORATED 02586 BRANDER SOMERSET BRANDER, SAM H. 11595 BRANDT, HERBERT C. SOMERSET PETROSAURUS, INC. 10831


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BRANTLEY UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16896 BRANYON 40 ACRE -B- LULING-BRANYON AUSTIN OPERATING, LLC. 01132 BRANYON, F. M. LULING-BRANYON BENNETT, PATRICIA 01050 BRANYON, F. M. -A- LULING-BRANYON BENNETT, PATRICIA 01008 BRANYON, F. M. -B- LULING-BRANYON BENNETT, PATRICIA 01009 BRANYON, F. M. /15 AC. TR./ LULING-BRANYON BENNETT, PATRICIA 01010 BRANYON, W. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01056 BRAUCHLE PEARSALL (AUSTIN CHALK) JEM ENERGY 13088 BRAUNE A.W.P. (OLMOS) AWP OPERATING COMPANY 12344 BRAWLEY, F. LULING-BRANYON PROVISION OIL, L.L.C. 06683 BRAY PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14741 BRAY, EALEN PENA CREEK (SAN MIGUEL 3RD) CUATRO PETRO CORP. 04268 BRAY, EALEN -SJ- PENA CREEK (SAN MIGUEL 3RD) CUATRO PETRO CORP. 04513 BREAZEALE PEARSALL (AUSTIN CHALK) OLMOS PARTNERS, INC. 13012 BREAZEALE SOMERSET PAISANO PRODUCTION, INC. 11436 BREAZEALE, J.L. SOMERSET EISE OIL, INC. 10834 BREAZEALE, J.L. ET UX SOMERSET EISE OIL, INC. 10781 BREAZEALE, SEEKER SOMERSET EISE OIL, INC. 10841 BREHM "A" ECKERT BRIGHT HAWK OPERATING COMPANY 15815 BREHM, A. C. ECKERT GINCO OPERATING CO. 00544 BREHM, L. ECKERT LUCROS INTERNATIONAL CORPORATION 00545 BREHM, M. ECKERT BRIGHT HAWK OPERATING COMPANY 15153 BREITZIEK LA VERNIA CAL-WACO OIL CO. INC. 08113 BREITZKE, L. COOKSEY DOEGE, DONALD 05467 BREWER 36 AC. LYTTON SPRINGS CHEATHAM, JOE R. OIL CO. 01167 BREWER, ETAL, MRS. M. L. LYTTON SPRINGS CHEATHAM, JOE R. OIL CO. 01154 BREWER, H. A. LYTTON SPRINGS DARST CREEK OIL COMPANY 01151 BREWER, M. L. LYTTON SPRINGS DARST CREEK OIL COMPANY 01156 BREWER, M. L. LYTTON SPRINGS GAUGE OIL COMPANY 01147 BREWER, M. L. -T- LYTTON SPRINGS DARST CREEK OIL COMPANY 01152 BREWER, M. L., MRS., ETAL -A- LYTTON SPRINGS DARST CREEK OIL COMPANY 02973 BREWER, M. L., MRS., ETAL -B- LYTTON SPRINGS DARST CREEK OIL COMPANY 02974 BRICE, MARY -A- UNIT BATESVILLE, SOUTH (ANACACHO) JENNINGS EXPLORATION COMPANY 06657 BRIDGERS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16953 BRIDGES, A. C. DUNLAP GREAT PLAINS RESOURCES, INC. 03931 BRIDGES, A. C. SALT FLAT W.W. ENERGY 01531 BRIDWELL LIMITED UNIT WILDCAT SANCHEZ OIL & GAS CORPORATION 15988 BRIDWELL LIMITED UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 15457 BRIETZKE, A. LA VERNIA CIVRON PETROLEUM RES., LLC 00921 BRIETZKE, ALBERT LA VERNIA DONOCO OIL COMPANY 00890 BRIETZKE, WALTER C. LA VERNIA TEXAS COASTAL RESOURCES LLC 03783 BRIGGS BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 15532 BRIGGS SOMERSET CALAME, RICHARD 10799 BRIGGS RANCH BRISCOE RANCH (EAGLEFORD) TALISMAN ENERGY USA INC. 15732 BRIGGS RANCH EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 15446 BRIGGS UNIT B BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 16176 BRIGGS UNIT A BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 16130 BRIGGS UNIT C BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 17098 BRIGGS UNIT D BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 17310 BRIGGS, A.K. SOMERSET CALAME, RICHARD 13774 BRINKLEY TREBMAL (SERPENTINE) BLACK JACK SERVICES, L.L.C. 14380


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BRINKMEYER -A- BEYERSVILLE, SW. BLACK JACK SERVICES, L.L.C. 03799 BRINSON, S. A. -A- IMOGENE, S. (CARRIZO) BRYMER CONTRACTING INCORPORATED 04338 BRISCO EAGLEVILLE (EAGLE FORD-1) ARGENT ENERGY (US) HOLDINGS INC. 16790 BRISCOE BRISCOE RANCH (OLMOS) ENERGYQUEST II, LLC 14599 BRISCOE (5140) BRISCOE RANCH (OLMOS) ENERGYQUEST II, LLC 14732 BRISCOE -A- SOMERSET PETROSAURUS, INC. 11494 BRISCOE -B- SOMERSET PETROSAURUS, INC. 11362 BRISCOE "B" BRISCOE RANCH (OLMOS) CRIMSON ENERGY PTNRS III, L.L.C. 14816 BRISCOE CARLA RANCH BRISCOE RANCH (EAGLEFORD) ANADARKO E&P ONSHORE LLC 15238 BRISCOE COCHINA WEST RANCH BRISCOE RANCH (EAGLEFORD) ANADARKO E&P ONSHORE LLC 15234 BRISCOE DICKERSON SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 15880 BRISCOE ETAL SECTION 89 BRISCOE RANCH (EAGLEFORD) PATTERSON ENERGY CORPORATION 15443 BRISCOE ETAL SECTION 91 BRISCOE RANCH (EAGLEFORD) PATTERSON ENERGY CORPORATION 15444 BRISCOE RANCH "A" WILDCAT ENERGYQUEST II, LLC 14724 BRISCOE RANCH ETAL SECTION 57 BRISCOE RANCH (EAGLEFORD) PATTERSON ENERGY CORPORATION 15223 BRISCOE RANCH ETAL SECTION 63 BRISCOE RANCH (EAGLEFORD) PATTERSON ENERGY CORPORATION 15373 BRISCOE RANCH UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16042 BRISCOE RANCH UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16047 BRISCOE RANCH UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16406 BRISCOE RANCH UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16311 BRISCOE-MCKNIGHT BRISCOE RANCH (EAGLEFORD) NEWFIELD EXPLORATION COMPANY 15128 BRISCOE-MCKNIGHT CARRIZO (SAN MIGUEL 2850) NEWFIELD EXPLORATION COMPANY 14837 BRISCOE-SANER CHITTIM (AUSTIN CHALK) NEWFIELD EXPLORATION COMPANY 14368 BRISCOE-SANER CHITTIM (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 14449 BRISCOE-SANER M.F. JAKE LAWLESS (EDWARDS LIME) NEWFIELD EXPLORATION COMPANY 14807 BRISCOE-SANER PRICKLY PEAR (GLEN ROSE) NEWFIELD EXPLORATION COMPANY 14397 BRISCOE-SANER TWO M (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 15133 BRISCOE, DOLPH "C" BRISCOE RANCH (OLMOS) ENERGYQUEST II, LLC 14745 BRISCOE, JOE E. SOMERSET PETROSAURUS, INC. 06318 BRISCOE, MARTHA SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 15009 BRISCOE, MARTHA -A- SALT FLAT DST OIL COMPANY 01493 BRISCOE, MARTHA -B- SALT FLAT DST OIL COMPANY 01999 BRISCOE, MARTHA -C- SALT FLAT FLAMINGO OIL & GAS 03535 BRISCOE, TRAP -A- 100 ACRES SALT FLAT FLAMINGO OIL & GAS 01465 BRISCOE, TRAP -B- SALT FLAT EAGLE FORD OIL CO., INC. 03491 BRISCOE, TRAP 56 ACRES SALT FLAT GUINN OIL COMPANY 01466 BRITE LEG UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17207 BRITE, ROY A. SOMERSET SOUTHWEST LOOP 1604, LTD. 11120 BRITE, ROY A. -A- SOMERSET SOUTHWEST LOOP 1604, LTD. 10814 BROCKENBUSH MINERVA-ROCKDALE SMITH, L C PRODUCTION 05658 BROCKENBUSH -A- MINERVA-ROCKDALE SMITH, L C PRODUCTION 12261 BROCKENBUSH -B MINERVA-ROCKDALE SMITH, L C PRODUCTION 10554 BROCKENBUSH -B- MINERVA-ROCKDALE JET-TEX OIL & GAS, LLC 10235 BROCKENBUSH -B- MINERVA-ROCKDALE LA PLATA OPERATING CO., INC. 10340 BROCKENBUSH -C- MINERVA-ROCKDALE SMITH, L C PRODUCTION 10438 BROCKENBUSH "A" MINERVA-ROCKDALE SMITH, L C PRODUCTION 02894 BROCKENBUSH B MINERVA-ROCKDALE SMITH, L C PRODUCTION 11888 BROKEN ARROW RANCH LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16105 BROKEN ARROW RANCH UNIT C LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16289 BROKEN ARROW RANCH UNIT D LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16106 BROLL EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16774


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BRONSON-FRANCIS-SLATER UNIT SALT FLAT RODENBERG-WALKER 03213 BRONSON-FRANCIS-SLATER-A- SALT FLAT RODENBERG-WALKER 03260 BROOKS, DENNIS MINERVA-ROCKDALE UBETCO, INC. 13055 BROS UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16764 BROTHERS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15253 BROWN WILDCAT PROPERTY DEVELOPMENT GROUP, INC. 14388 BROWN EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15565 BROWN LULING-BRANYON EAGLE FORD OIL CO., INC. 03200 BROWN PEARSALL (AUSTIN CHALK) BRAZOS PETROLEUM, INC. 06129 BROWN PEARSALL (OLMOS -A-) DIMMIT COUNTY SWD, LLC 15870 BROWN SALT FLAT SAUR, JERRY 07870 BROWN "A" PEARSALL (AUSTIN CHALK) BRAZOS PETROLEUM, INC. 05763 BROWN ESTATE BUCHANAN GAUGE OIL COMPANY 00140 BROWN ESTATE SOMERSET SEAGULL OPERATING CO., INC. 11227 BROWN INVESTMENTS EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16284 BROWN TRUST EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15756 BROWN UNIT SALT FLAT, WEST GOG FIELDS, INC. 13645 BROWN-BAHLMANN UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15861 BROWN/DEVAUGHN SALT FLAT COMANCHE WELL SERVICE CORP. 08350 BROWN, ALICIA FAIRFIELD CALK, ROGER D. 08569 BROWN, G. L. CHARLOTTE (NAVARRO) FREEMAN, J. L., OPER. 04648 BROWN, GUS T. LULING-BRANYON XPLORE NATURAL RESOURCES LLC 05380 BROWN, GUS T. ET AL LULING-BRANYON XPLORE NATURAL RESOURCES LLC 13884 BROWN, GUY LULING-BRANYON EAGLE FORD OIL CO., INC. 06526 BROWN, HAL -A- LULING-BRANYON EAGLE FORD OIL CO., INC. 00993 BROWN, HAL -C- LULING-BRANYON EAGLE FORD OIL CO., INC. 03977 BROWN, HAL -D- LULING-BRANYON EAGLE FORD OIL CO., INC. 01011 BROWN, HAL -E- LULING-BRANYON EAGLE FORD OIL CO., INC. 01012 BROWN, HORACE SOMERSET EMERALD BAY ENERGY, INC. 10897 BROWN, HORACE SOMERSET SEAGULL OPERATING CO., INC. 11218 BROWN, J. J. BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 03355 BROWN, J. J. BUCHANAN W.W. ENERGY 00156 BROWN, J. T. ET AL UNIT SALT FLAT, WEST E. T. OIL COMPANY 06713 BROWN, JACK JR. FLORESVILLE, EAST CALTEX ENERGY CO. 05956 BROWN, JAMES CHICON LAKE GENIE OIL COMPANY 09970 BROWN, JAMES R. STULTING HARRIER HOLDINGS, LTD. 05502 BROWN, JIM, ETAL SALT FLAT SHEFTS & SHEFTS, INC. 03028 BROWN, JOE MINERVA-ROCKDALE OMNI OIL & GAS, INC. 02770 BROWN, OLGA CHICON LAKE RLU OPERATING, LLC 00298 BROWN, R.E., JR. ET UX SALT FLAT SHWJ OIL & GAS CO., INC. 05605 BROWN, REEVES A-69 MINERVA-ROCKDALE THREE-C PRODUCTION COMPANY 02587 BROWN, SADIE TENNEY CREEK SAUR, JERRY 06406 BROWN, T. H. LULING-BRANYON EAGLE FORD OIL CO., INC. 03673 BROWN, T. HARRY LULING-BRANYON BENNETT, PATRICIA 06132 BROWN, T. HARRY LULING-BRANYON G & G OIL 00994 BROWN, T. HARRY -A- LULING-BRANYON EAGLE FORD OIL CO., INC. 06372 BROWN, T. HARRY -A- LULING-BRANYON G & G OIL 10587 BROWN, T. HARRY -A- LULING-BRANYON SHEFTS & SHEFTS, INC. 11325 BROWN, T. HARRY -B- LULING-BRANYON G & G OIL 11326 BROWN, T. HARRY -C- LULING-BRANYON SHEFTS & SHEFTS, INC. 11327 BROWN, T. R. LULING-BRANYON EAGLE FORD OIL CO., INC. 01862


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BROWN, T.H. LULING-BRANYON G & G OIL 14814 BROWN, T.H. LULING-BRANYON GREAT PLAINS RESOURCES, INC. 12383 BROWNE, HAL, 2.77 ACRES LULING-BRANYON SHEFTS & SHEFTS, INC. 00992 BROWNLOW BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15294 BRUNDAGE PEARSALL (AUSTIN CHALK) THALMANN, DAVID VAC SERVICE INC 13021 BRUNDAGE-IVY UNIT PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14940 BRUNDRETT EAGLE UNIT BRISCOE RANCH (EAGLEFORD) U.S. ENERCORP, LTD. 15921 BRUNS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17280 BRUNS UNIT FULCHER (EDWARDS A) BELLOWS OPERATING CO., L. C. 14162 BRUNS-MILLER UNIT CHRISTIAN (6800) MODERN EXPLORATION, INC. 13167 BRUNS-MILLER UNIT PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 15447 BRUTON, DEWEY ETUX FAIRFIELD DIAMOND TRADING & PIPELINE CORP 02181 BRYAN, E.S. SUTIL (BUDA) SEDCO RESOURCES INC 06403 BRYAN, GLEN SOMERSET U. D. MAN, INC. 10957 BRYMER EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16269 BRYMER B UNIT PEARSALL (AUSTIN CHALK) KILLAM OIL CO., LTD. 13479 BRYMER UNIT PEARSALL (AUSTIN CHALK) KILLAM OIL CO., LTD. 13368 BUBBA GOODWIN EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16891 BUCHANAN -B- UNIT PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 14838 BUCHANAN, JOHN F. -A- PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 13173 BUCHHOLTZ, A.M. DUNLAP BLACKMAR, JIM OIL OPERATOR 06732 BUCHHOLTZ, A.M. DUNLAP NAPOLEON WATER WORKS 10248 BUCHSENSCHUTZ, R. SOMERSET GREAT PLAINS RESOURCES, INC. 10761 BUCHSENSCHUTZ, R. -A- SOMERSET GREAT PLAINS RESOURCES, INC. 10806 BUCKLEY, CLIFFORD ET AL PEARSALL (AUSTIN CHALK) SUN-KEY OIL CO., INC. 12412 BUCKLEY, CLIFFORD ETAL PEARSALL (AUSTIN CHALK) D.J.F. SERVICES, INC. 13742 BUERGER PEARSALL (AUSTIN CHALK) CIBOLO ENERGY OPERATING, INC. 05629 BUERGER, LENA PEARSALL (AUSTIN CHALK) HUGHES, DAN A. COMPANY, L.P. 05567 BUERGER, LENA PEARSALL (AUSTIN CHALK) SABINAL RESOURCES, INC. 14743 BUFFALO HUNTER EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16976 BUFFLEHEAD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17055 BUFKIN, JAMES T. TENNEY CREEK LULING O&G LLC 06109 BUGAI, L.J. -A- LA VERNIA THREE J ENERGY, INC. 06000 BULLOCK SALT FLAT TRINITY ENVIRONMENTAL SWD,L.L.C 10051 BUNCH, JOE LULING-BRANYON E & W OIL, INC. 03385 BUNCH, JOE "A" LULING-BRANYON E & W OIL, INC. 03461 BUNCH, JOE "C" LULING-BRANYON E & W OIL, INC. 01048 BUNDRICK KAYE (NAVARRO) QUEST RESEARCH & DEV. CORP. 11934 BUNDRICK, D. K. KAYE (NAVARRO) GEOMEG ENERGY OPERATING CO., LLC 01880 BUNDRICK, V. HASSE (BUDA) PETROLIA DRILLING CORP. 08179 BUNDRICK, V. HIGGINS, NE (AUSTIN CHALK) VAN WINKLE OIL 07161 BUNTIN DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16333 BURCHARD, LOUIS H. OIL UNIT PEACH CREEK (AUSTIN CHALK) SEGURO WELL SERVICE, INC. 07464 BURDITT, DALE LULING-BRANYON TEXSTAR OIL & GAS, LLC 08935 BUREAU OF ECONOMIC GEOLOGY WILDCAT REGENCY ENERGY, INC. 14611 BURKETT, FRED E. KYOTE GINCO OPERATING CO. 09164 BURKHARDT-SKILES MAC SIMON ET AL EZZELL SAN CAJO OIL COMPANY 00571 BURKHARDT, KATIE PRUITT, N. (4500) BRYMER CONTRACTING INCORPORATED 11978 BURKHARDT, KATIE PRUITT, S. (ESCONDIDO) FORZA OPERATING, LLC 08822 BURKS RANCH WASHBURN RANCH (4600) LAKEWOOD OPERATING, LTD. 15851 BURLESON COUNTY OIL -A- MILBUR (NAVARRO) VICEROY PETROLEUM, LP 10153


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BURLESON COUNTY OIL CO. MILBUR (NAVARRO) LEXINGTON FINANCIAL SERVICES,INC 10002 BURLESON-COKER PEARSALL (AUSTIN CHALK) HOLLUB, LAMBERT DRILLING COMPANY 04684 BURLESON, HOMER ZUMWALT (ARNIM SAND) MCA PETROLEUM CORPORATION 09219 BURNAL, BAKER NIXON L & L PIPE & SUPPLY INC. 07659 BURNETT PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 13085 BURNS MINERVA-ROCKDALE EDMONDS, JERRY 07801 BURNS -A- PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 12447 BURNS "D-F-STATE UNIT PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 13562 BURNS "D" PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 13276 BURNS "E-D STATE" UNIT PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 13277 BURNS "E-D-F STATE" UNIT PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 13379 BURNS "E-G" UNIT PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 13070 BURNS "E" PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 12806 BURNS "H" PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 12715 BURNS "H" UNIT PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 12952 BURNS E-F UNIT "A" PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 13200 BURNS HEIRS PEARSALL (AUSTIN CHALK) CORE E & P CORP. 12271 BURNS HEIRS PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 11668 BURNS RANCH PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 14858 BURNS RANCH "D" PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 13713 BURNS RANCH A BRISCOE RANCH (EAGLEFORD) GOODRICH PETROLEUM COMPANY 15361 BURNS RANCH A PEARSALL (BUDA LIME) GOODRICH PETROLEUM COMPANY 15699 BURNS RANCH I EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15409 BURNS RANCH II EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15454 BURNS RANCH III BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15592 BURNS RANCH IV EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16628 BURNS RANCH V BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16164 BURNS RANCH VI BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16280 BURNS RANCH VII EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16689 BURNS RANCH VIII EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16736 BURNS RANCH XI EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17260 BURNS RANCH-B- PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 12683 BURNS, "D" PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 13690 BURNS, ANN BIG FOOT IMPETRO OPERATING LLC 04430 BURNS, ANN -A- BIG FOOT IMPETRO OPERATING LLC 12014 BURNS, ELLA KYOTE JENEX PETROLEUM CORPORATION 00801 BURNS, JANE BIG FOOT JENEX PETROLEUM CORPORATION 00088 BURNS, JANE BIG FOOT (OLMOS D-3 SAND) JENEX PETROLEUM CORPORATION 00118 BURNS, JANE -A- BIG FOOT JENEX PETROLEUM CORPORATION 00089 BURNS, JANE -B- BIG FOOT IMPETRO OPERATING LLC 00063 BURNS, JANE -B- KYOTE JENEX PETROLEUM CORPORATION 00802 BURNS, JANE -C- BIG FOOT IMPETRO OPERATING LLC 00064 BURNS, JANE -C- BIG FOOT JENEX PETROLEUM CORPORATION 00091 BURNS, JANE -C- KYOTE INCEPTUS OPERATIONS, LLC 14310 BURNS, JANE -D- BIG FOOT IMPETRO OPERATING LLC 04449 BURNS, JANE -E- BIG FOOT IMPETRO OPERATING LLC 04551 BURNS, JANE 'F' BIG FOOT IMPETRO OPERATING LLC 08739 BURNS, JANE A BIG FOOT (OLMOS D-3 SAND) JENEX PETROLEUM CORPORATION 14885 BURNS, MARTHA DOBSON ET AL #8 PEARSALL (AUSTIN CHALK) EXPRESS OIL AND GAS 13555 BURR M.F. JAKE LAWLESS (EDWARDS LIME) NEWFIELD EXPLORATION COMPANY 15135 BURR SALT FLAT, WEST EAGLE FORD OIL CO., INC. 06800


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ BURR TWO M (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 14385 BURR "A" CHITTIM (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 14650 BURR "A" TWO M (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 14631 BURR "C" WIPFF (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 14605 BURR A M.F. JAKE LAWLESS (EDWARDS LIME) NEWFIELD EXPLORATION COMPANY 14614 BURR C TWO M (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 14955 BURR C 293H UNIT TWO M (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 15099 BURR C 8-231XH UNIT TWO M (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 15710 BURR-BROWN -C- SALT FLAT E. T. OIL COMPANY 05935 BURR, J. K. EST. WIPFF (GEORGETOWN 2190) SHAW, T. G. OIL COMPANY, LTD. 04162 BURRIS, CARLYN SALT FLAT BURRIS OPERATING CO. 09681 BURRIS, CARLYN -A- SALT FLAT LULING O&G LLC 09682 BURROW UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16475 BURSELL -A- SOMERSET GREAT PLAINS RESOURCES, INC. 10978 BURSELL -B- SOMERSET GREAT PLAINS RESOURCES, INC. 10979 BURTON-BARNES-BUTLER PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12560 BUSCH, R. D. BURMIL (2400 WILCOX) ROSENTHAL, STANLEY H. 13502 BUSCH, R. D. W.C. FINCH (SIMSBORO 1900) ROSENTHAL, STANLEY H. 13631 BUSCH, R.D. BURMIL (2600 WILCOX) ROSENTHAL, STANLEY H. 13630 BUSH MINERVA-ROCKDALE NAVALO 16568 BUSH, E. M. SOMERSET SEEKER OIL COMPANY II, INC. 02455 BUSH, E.M. -A- SOMERSET SEEKER OIL COMPANY II, INC. 10656 BUSH, ED. SOMERSET SEEKER OIL COMPANY II, INC. 10860 BUTLER EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 15522 BUTLER MILBUR (NAVARRO) MICRO OPERATING, INC. 10195 BUTLER, MILTON C. SUTIL (AUSTIN) OXY USA INC. 06619 BUTTERFLY DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16437 BUTTS & SAWYER PLEASANTON, S. (EDWARDS) FIVE-JAB, INC. 15017 BUTTS & SAWYER PLEASANTON, SOUTH (EDWARDS LIME) FIVE-JAB, INC. 14135 BUTTS & SAWYER/MOSBACHER PLEASANTON, S. (ANACACHO) CEDAR ENERGY SERVICES, LLC 14716 BV PEACH CREEK (AUSTIN CHALK) DIAMOND M DRLG & EXPL CO. 15811 BYERLY, RADFORD BIG WELLS(SAN MIGUEL, LO., EAST) QUATRO OIL AND GAS, INC. 04205 BYNUM, J. S. -A- COUGHRAN (AUSTIN CHALK) DEASON OIL & GAS INTERESTS 04006 BYRD RANCH EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15482 BYRD 2-H MARCELINA CREEK (AUSTIN CHALK) ARRIOLA OPERATING & CONSLTG INC. 12983 BYRD, CHESTER LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01057 BYRD, CLARA LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 07971 BYRD, K.W. MARCELINA CREEK (AUSTIN CHALK) IWR OPERATING, LLC 10561 BYRD, LEE LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 03169 BYRD, LEE FEE LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01060 BYROM, E. SOMERSET MORE TEXAS OIL 11119 BYROM, E. E. CROWN, E. (NAVARRO) CENTEX DEVELOPMENT 03782 BYROM, M.H. CROWN, E. (NAVARRO) EXXCEL OPERATING COMPANY 00398 C & V WEBB DRUMMOND (EDWARDS 1800) BENCHMARK TEXAS PETROLEUM, LLC. 16424 C R RANCH UNIT LULING-BRANYON NORTH SOUTH OIL, LLC 17332 C. E. SCULL, JR. ET AL UNIT LA VERNIA (AUSTIN CHALK) GEOMEG ENERGY OPERATING CO., LLC 13364 C. SMITH "B" SALT FLAT EAGLE ENERGY ACQUISITIONS LP 14914 C-WILLOW DAIRY INC "C" LA VERNIA SEACO PRODUCTION 09934 CACTUS PEARSALL (OLMOS -A-) SELECT ENERGY SERVICES, LLC 14900 CACY-SAUER FAIRFIELD K.A. BARNES OIL & GAS OPER, LLC 09305 CAFFARELLI ESTATE PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 05296


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CAG-ARISTIDES PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 12943 CAG-BYERLY PEARSALL (AUSTIN CHALK) FINALY RESOURCES LLC 12692 CAG-LANG-14-2 PEARSALL (AUSTIN CHALK) CAG PETROLEUM CORP. 12376 CAG-LANG-200 PEARSALL (AUSTIN CHALK) CAG PETROLEUM CORP. 12570 CAGE MINERALS LTD. ET AL WILDCAT CMR ENERGY, L.P. 14499 CAGE RANCH BRISCOE RANCH (EAGLEFORD) NEWFIELD EXPLORATION COMPANY 15299 CAGE RANCH CHITTIM (AUSTIN CHALK) NEWFIELD EXPLORATION COMPANY 17136 CAGE RANCH COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 15139 CAGE RANCH PENA CREEK (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 15092 CAGE RANCH SACATOSA (SAN MIGUEL #1 SAND) NEWFIELD EXPLORATION COMPANY 15007 CAGE RANCH 63 COMANCHE-HALSELL (6500) PATTERSON ENERGY CORPORATION 14874 CAGE-BRISCOE "B" 337H UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14765 CAGE-BRISCOE A 119H UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14871 CAGE-BRISCOE A 228H UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 15072 CAGE-BRISCOE B COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14800 CAGE-BRISCOE B 128H UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14979 CAGE-BRISCOE B 138H UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14960 CAGE-BRISCOE B 144H UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14798 CAGE-BRISCOE B 146 UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14775 CAGE-BRISCOE B 154H UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14912 CAGE-BRISCOE B 156H UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14933 CAGE-BRISCOE B 338H UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14986 CAGE-BRISCOE B 446H UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14984 CAGE-BRISCOE B 528H UNIT SACATOSA (SAN MIGUEL #1 SAND) NEWFIELD EXPLORATION COMPANY 15008 CAGE-BRISCOE B 537 UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14803 CAGE-BRISCOE B 545H UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14867 CAGE-BRISCOE B145 UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14624 CAGE-BRISCOE B244 UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14738 CAGE-BRISCOE B245 UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14737 CAGE-BRISCOE C COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14764 CAGE-BRISCOE C 259H UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14972 CAGE-KIRK A 1-5H UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14971 CAGE-KIRK B21 COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14772 CAGE-WEST "B" 437H UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14802 CAGE-WEST A 134H UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 15012 CAGE-WEST B COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 15137 CAGE-WEST B PENA CREEK (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 15061 CAGE-WEST B 136H UNIT COMANCHE-HALSELL (6500) NEWFIELD EXPLORATION COMPANY 14850 CAGE, R.C. "45" CAGE RANCH (EAGLEFORD) STACHA, EDDY A. 06210 CAIN A UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 17231 CAIN, J. D. SALT FLAT BUBBA LYNN CRUDE 03013 CAIN, J. D. SALT FLAT CASTILLO OIL COMPANY LLC 02945 CAIN, JOSEPH A. FAIRFIELD GREAT PLAINS RESOURCES, INC. 06843 CAJUN CAPER UNIT CAJUN CAPER (TOP WRIGHT) WYNN-CROSBY OPERATING, LTD. 14693 CALAME BIG FOOT H & M PETROLEUM CORPORATION 14246 CALAME CORN (OLMOS D-2) CALAME, JACK 14390 CALAME A BIG FOOT PROPERTY DEVELOPMENT GROUP, INC. 15054 CALDWELL COUNTY LULING-BRANYON CASTILLO OIL COMPANY LLC 03560 CALDWELL, T.J. JIM SMITH THRALL OPERATING COMPANY, INC. 08090 CALK, E. W. SOMERSET CALK OIL COMPANY 10893 CALKINS EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16716


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CALKINS-KOTHMANN PEARSALL (AUSTIN CHALK) EF ENERGY, L.L.C. 15201 CALLAHAN, M. W. LULING-BRANYON EAGLE FORD OIL CO., INC. 03717 CALLAHAN, M. W., -A- LULING-BRANYON EAGLE FORD OIL CO., INC. 03808 CALLIHAN LULING-BRANYON EAGLE FORD OIL CO., INC. 03206 CALLIHAN, DOROTHY LULING-BRANYON SOTOL ENERGY, INC. 05390 CALLIHAN, J. G. LULING-BRANYON M & M PETROLEM, INC. 02165 CALLIHAN, JIM LULING-BRANYON GINCO OPERATING CO. 03448 CALLIHAN, JIM G. LULING-BRANYON GEOMEG ENERGY OPERATING CO., LLC 03549 CALLIHAN, M. W. LULING-BRANYON DJ EXPLORATION, INC. 02522 CALLIHAN, M. W. LULING-BRANYON EAGLE FORD OIL CO., INC. 04606 CALLIHAN, M. W. -A- LULING-BRANYON EAGLE FORD OIL CO., INC. 06371 CALLIHAN, M. W. -C- LULING-BRANYON DJ EXPLORATION, INC. 13294 CALLIHAN, M.W. LULING-BRANYON EAGLE FORD OIL CO., INC. 06360 CALLIHAN, M.W. -B- LULING-BRANYON EAGLE FORD OIL CO., INC. 10664 CALLIHAN, W. M. LULING-BRANYON EAGLE FORD OIL CO., INC. 00995 CALLIHAN, W. M. -A- LULING-BRANYON CASTILLO OIL COMPANY LLC 00987 CALLIHAN, W. M. -C- LULING-BRANYON CASTILLO OIL COMPANY LLC 01052 CALTON, A. D. MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 01229 CALVERT PEARSALL (BUDA, S.) BLACKBRUSH O & G, LLC 16076 CALVERT SUTIL (REEF) OILFIELD CLEANTECH WATER REC LLC 09740 CALVERT "A" SUTIL (BUDA) MARSHFIELD OIL & GAS, LLC 05813 CALVERT RANCH FRO BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17100 CALVIN, CHARLES MINERVA-ROCKDALE COMANCHE WELL SERVICE CORP. 02407 CAMARO A EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 17323 CAMARO B EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 17099 CAMBER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16808 CAMERO, FRANK SOMERSET SOUTHWEST LOOP 1604, LTD. 10873 CAMERO, FRANK -A- SOMERSET SOUTHWEST LOOP 1604, LTD. 10876 CAMP TRUST C.J.P. (REEF) MORE TEXAS OIL 09345 CAMP TRUST -A- C.J.P. (REEF) MORE TEXAS OIL 11406 CAMPBELL PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 14057 CAMPBELL VELMA (ESCONDID0) CORE E & P CORP. 09464 CAMPBELL VELMA (ESCONDID0) RIO-TEX, INC. 15900 CAMPION, RALPH L. PEACH CREEK (AUSTIN CHALK) DIAMOND M DRLG & EXPL CO. 12953 CANAL, H. & K. FAIRFIELD CRYSTAL RESOURCES, INC 02265 CANNAN PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14695 CANNAN PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 13402 CANNON, E. H. PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 04734 CANNONADE RANCH PILGRIM (AUSTIN CHALK) PENN VIRGINIA OIL & GAS, L.P. 12947 CANNONADE RANCH NORTH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15524 CANNONADE RANCH SOUTH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15926 CANTINA TRI BAR (OLMOS) SWIFT ENERGY OPERATING, LLC 14902 CANTLEY A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16792 CANTU WILDCAT STX 13768 CANTU MARKAS (SERPENTINE REEF) STX 13700 CANTU PEARSALL (AUSTIN CHALK) RICOCHET ENERGY, INC. 12392 CANTU-HENDERSON PEARSALL (AUSTIN CHALK) RICOCHET ENERGY, INC. 16116 CANVASBACK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17010 CAPE BUFFALO WILDCAT EOG RESOURCES, INC. 16653 CAPITOL THOMPSON II PEARSALL (AUSTIN CHALK) SOUTH OIL, INC. 13602 CAPITOL THOMPSON III PEARSALL (AUSTIN CHALK) SOUTH OIL, INC. 13657


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CAPITOL THOMPSON III PEARSALL (BUDA LIME) SOUTH OIL, INC. 14430 CARDWELL MINUTEMEN (GEORGETOWN) GENESIS ST OPERATING LLC 08342 CARDWELL MINUTEMEN (GEORGETOWN) R. H. ENERGY CO., INC. 12076 CARDWELL 52 1/2 AC. LYTTON SPRINGS CHEATHAM, JOE R. OIL CO. 01168 CARDWELL, A. T. LYTTON SPRINGS DARST CREEK OIL COMPANY 01158 CARDWELL, A. T., 44 AC. LYTTON SPRINGS CHEATHAM, JOE R. OIL CO. 01165 CARDWELL, F. A. LYTTON SPRINGS DARST CREEK OIL COMPANY 01153 CARDWELL, F. A., 18 AC. LYTTON SPRINGS CHEATHAM, JOE R. OIL CO. 01166 CARDWELL, L. A. LYTTON SPRINGS DARST CREEK OIL COMPANY 01149 CARDWELL, WILLIE LYTTON SPRINGS CARDWELL'S U BAR OIL 10563 CARDWELL, WILLIE -A- MCMILLEN (DALE LM.-SERPENTINE MC. W. K. W. & T. INVESTMENTS 06059 CARIBOU EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17211 CARLA UNIT GIDDINGS (AUSTIN CHALK-1) DIAMOND M DRLG & EXPL CO. 07257 CARLSON 'C' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15994 CARLSON "A" EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15398 CARLSON "B" EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15846 CARNES CHRISTIAN (6800) ATLAS FUEL SUPPLY, LTD. 10626 CARNES "A" PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 14508 CARNES "B" PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 14510 CARNES "B" PEARSALL (BUDA LIME) GOODRICH PETROLEUM COMPANY 15908 CARNES POOLED UNIT SOMERSET SEEKER OIL COMPANY, INCORPORATED 10842 CARNES, LEE PILGRIM (NAVARRO) PROGENIES OPERATING LLC 06669 CAROLYN SOMERSET EVERETT OIL 11280 CARR, L.C. KAYE (NAVARRO) JGC OIL CO. 02251 CARRICO PEARSALL (AUSTIN CHALK) CIBOLO ENERGY OPERATING, INC. 05538 CARRIZO SPRINGS SWD EVERGREEN FARMS (AUSTIN CHALK) BASIC ENERGY SERVICES, L.P. 16480 CARROL, VERNON FAIRFIELD STARR OPERATING COMPANY 01981 CARROLL MARCELINA CREEK (BUDA) DENNIS, L.W. & ASSOCIATES, INC. 11409 CARROLL PEARSALL (AUSTIN CHALK) EXPRESS OIL AND GAS 12512 CARROLL PEARSALL (AUSTIN CHALK) QUEST RESEARCH & DEV. CORP. 12974 CARROLL UNIT COST (BUDA) J.W. SERVICE COMPANY 08035 CARROLL, JOHN TRUSTEE MARCELINA CREEK (AUSTIN CHALK) AMPAK OIL COMPANY 13935 CARSON BRISCOE RANCH (EAGLEFORD) XOG OPERATING LLC 16368 CARSON A EAGLEVILLE (EAGLE FORD-1) GEOSOUTHERN ENERGY CORPORATION 16082 CARTER CHICON LAKE CARTER, JOE M. 09477 CARTER EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 15931 CARTER SALT FLAT CARTER CATTLE & CRUDE COMPANY 01494 CARTER SPILLER TEXSTAR OIL & GAS, LLC 03676 CARTER -A- SOMERSET SEAGULL OPERATING CO., INC. 11238 CARTER -B- SALT FLAT CARTER CATTLE & CRUDE COMPANY 02048 CARTER "E" SOMERSET SEAGULL OPERATING CO., INC. 11136 CARTER UNIT SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 15102 CARTER, A. J. DUNLAP TEXSTAR OIL & GAS, LLC 03822 CARTER, E. L., -A- DUNLAP KIDD PRODUCTION CO. 03707 CARTER, ELWOOD SPILLER TEXSTAR OIL & GAS, LLC 09895 CARTER, ELWOOD -A- SPILLER TEXSTAR OIL & GAS, LLC 06764 CARTER, ELWOOD -B- SPILLER QUEST EMG, INC. 13031 CARTER, H. DUNLAP KIDD PRODUCTION CO. 03820 CARTER, KATHLEEN E. FAIRFIELD GREAT PLAINS RESOURCES, INC. 07780 CARTER, N. J. LULING-BRANYON TEXSTAR OIL & GAS, LLC 01955 CARTER, R. W. SALT FLAT M & J PRODUCTION COMPANY 02005


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CARTER, R. W. SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 14965 CARTER, R. W. -A- SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 15035 CARTER, R. W. -A- SALT FLAT BAY CITY DRILLING CO. INC. 02030 CARTER, ROBERT W. SALT FLAT B-3 OIL CO. 01872 CARTER, ROBERT W., -A- SALT FLAT B-3 OIL CO. 01501 CARTER, W. L. PEARSALL (AUSTIN CHALK) HUGHES, DAN A. COMPANY, L.P. 15187 CARTER, W. L. PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 04593 CARTRIGHT, H.G. LULING-BRANYON RIDGELING WELL SALVAGE 06979 CARTWRIGHT LULING-BRANYON EAGLE FORD OIL CO., INC. 03845 CARTWRIGHT TRES ENCANTO (ESCONDIDO) MILLENNIUM PETRO-PHYSICS, INC. 14734 CARTWRIGHT TRES ENCANTO (ESCONDIDO) MILLENNIUM PETRO-PHYSICS, INC. 14993 CARTWRIGHT WASHBURN, WEST (WILCOX LO.) BUFFALO OIL CORP. 04249 CARTWRIGHT -A- WASHBURN, WEST (WILCOX 5100) BUFFALO OIL CORP. 12060 CARTWRIGHT -A- WASHBURN, WEST (5270) BUFFALO OIL CORP. 05099 CARTWRIGHT "A" COOKE RANCH (OLMOS) LEWIS PETRO PROPERTIES, INC. 14915 CARTWRIGHT, A. M. LULING-BRANYON EAGLE FORD OIL CO., INC. 03493 CARTWRIGHT, A. M. -C- LULING-BRANYON EAGLE FORD OIL CO., INC. 02840 CARTWRIGHT, A. M. "D" LULING-BRANYON EAGLE FORD OIL CO., INC. 03614 CARTWRIGHT, A. M. SWD LULING-BRANYON EAGLE FORD OIL CO., INC. 14239 CARTWRIGHT, A.M. LULING-BRANYON EAGLE FORD OIL CO., INC. 02709 CARTWRIGHT, A.M. -B- LULING-BRANYON EAGLE FORD OIL CO., INC. 02829 CARTWRIGHT, A.M. "A" LULING-BRANYON EAGLE FORD OIL CO., INC. 05855 CARTWRIGHT, H. G. LULING-BRANYON RIDGELING WELL SALVAGE 03967 CARUTHERS, TEX SOMERSET UNDERBRINK OIL 01611 CARVER UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16263 CASANO SOMERSET GLOVER OIL, INC. 11092 CASARES SOMERSET K2 PETROLEUM, INC. 11110 CASARES UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15372 CASARES UNIT MARCELINA CREEK (BUDA) PONTIAC OIL, INC. 11417 CASH UNIT PLUM CREEK (SERPENTINE) ALDIS OIL 15013 CASH UNIT PLUM CREEK, N. (DALE LIME) ALDIS OIL 12298 CASIAS, JIMMIE SOMERSET CASIAS OIL WELL SERVICE, INC. 10736 CASIAS, JIMMIE SOMERSET CASIAS OIL WELL SERVICE, INC. 10772 CASIAS, ROBERT A. SOMERSET GREAT PLAINS RESOURCES, INC. 10773 CASPARIS MINERVA-ROCKDALE SMITH, L C PRODUCTION 07745 CASSIN UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 17232 CASSIN, MRS. S. D. S. ET AL BATESVILLE, SW. (SAN MIGUEL) CORE E & P CORP. 05278 CAST BATEMAN (AUSTIN CHALK) GEOMEG ENERGY OPERATING CO., LLC 13548 CAST BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 10054 CAST BUCHANAN MEB, LLC 12133 CAST -X- BATEMAN (AUSTIN CHALK) AUSTIN OPERATING, LLC. 13593 CAST/DINGES BATEMAN (AUSTIN CHALK) E-P OIL CO. INC. 13481 CAST/DINGES "A" BATEMAN (AUSTIN CHALK) AUSTIN OPERATING, LLC. 13520 CAST, G. BATEMAN (AUSTIN CHALK) GEOMEG ENERGY OPERATING CO., LLC 13341 CAST,GRADY BUCHANAN AUSTIN OPERATING, LLC. 04327 CASTANEDA FAIRFIELD HASLETT, TERRY E. 11530 CASTELLANO, NIEVES FAIRFIELD CRYSTAL RESOURCES, INC 01982 CASTELLAW-HUNDLEY PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 15096 CASTER, CLEMMIE DUNLAP TEXSTAR OIL & GAS, LLC 00533 CASTILLO, RAUL FAIRFIELD CALK, ROGER D. 07694 CASTO UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16788


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CASTO UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16704 CAT-DILLEY SWD PEARSALL (AUSTIN CHALK) TRINITY ENVIRONMENTAL SWD,L.L.C 15949 CATARINA SWD J.F.S. SW(OLMOS 4120) HECKMANN WATER RESOURCES(CVR)INC 15552 CATY UNIT EAGLEVILLE (EAGLE FORD-1) CINCO NATURAL RESOURCES CORP. 17263 CAVAZOS, EMILIO ET AL SCHAFER-BROWN (ANACACHO) MILLENNIUM PETRO-PHYSICS, INC. 12326 CAVIL, TYRENA MINERVA-ROCKDALE ROCKDALE PARTNERS, L.L.C. 01230 CAZA PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 17275 CDV-WILLIAMS PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12992 CELLMAR SNOGA (TAYLOR OLMOS) BRITANCO, L.L.C. 12187 CEN-TEX #2 WILDCAT CEN-TEX PETROLEUM CO. 12297 CENIZO RANCH EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 15636 CENTAVO LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16110 CENTAVO UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16519 CENTAVO UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16541 CENTRAL NATIONAL TENNEY CREEK E & C OPERATING LLC 10157 CENTRAL NATIONAL/BARE RIDGE TENNEY CREEK E & C OPERATING LLC 09506 CERVANTES, ERNESTO G. FAIRFIELD CRYSTAL RESOURCES, INC 02132 CERVANTES, REYES E. ET UX FAIRFIELD GINCO OPERATING CO. 08186 CES CARRIZO YARD EVERGREEN FARMS, NE. (1ST OLMOS) CES SWD TEXAS, INC. 15829 CESAK, JOSEPH B. MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 06855 CHACON, ERNEST D. & JESUS E. SOMERSET SYJ OIL & GAS, INC. 03188 CHADDOCK, DOROTHY MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 01268 CHADWICK, J. H. KAYE (NAVARRO) JGC OIL CO. 01875 CHAMOIS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16579 CHANDLER, BYRON COSMOPOLITAN (AUSTIN CHALK) MEXAMERICAN WELL SERVICE CORP. 12299 CHANDLER, FRED H. J.Y.F. (BUDA) MARATHON OIL COMPANY 14414 CHANEY, TOM FEE FAIRFIELD CHANEY, TOM 11878 CHAPA UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15970 CHAPAL, FRED R. FAIRFIELD STARR OPERATING COMPANY 02453 CHAPAROSSA A CHITTIM (EAGLEFORD) ESPADA OPERATING LLC 15227 CHAPARROSA BRISCOE RANCH (EAGLEFORD) ESPADA OPERATING LLC 15490 CHAPARROSA "A" WILDCAT ESPADA OPERATING LLC 15228 CHAPARROSA "A" LORENZO (AUSTIN CHALK) ESPADA OPERATING LLC 15816 CHAPARROSA "D" BRISCOE RANCH (EAGLEFORD) BHP BILLITON PET(TXLA OP) CO 15327 CHAPARROSA E BRISCOE RANCH (EAGLEFORD) BHP BILLITON PET(TXLA OP) CO 15558 CHAPIN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17102 CHAPMAN LULING-BRANYON GREAT PLAINS RESOURCES, INC. 01036 CHAPMAN SOMERSET GREAT PLAINS RESOURCES, INC. 11098 CHAPMAN PFEIL UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15659 CHAPMAN ROTHE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15604 CHAPMAN-ABBOTT UNIT CHAPMAN ABBOTT GENESIS WELL SERVICE 09246 CHAPMAN, ANNA WILDCAT DAWSEY OPERATING COMPANY 14282 CHAPMAN, GEORGE R. LULING-BRANYON GINCO OPERATING CO. 02491 CHAPMAN, GEORGE R. -A- LULING-BRANYON GINCO OPERATING CO. 03559 CHAPMAN, GEORGE R. -B- LULING-BRANYON GINCO OPERATING CO. 03524 CHAPMAN, GEORGE R., -A- LULING-BRANYON GINCO OPERATING CO. 03246 CHAPMAN, H. H. LULING-BRANYON COPPERHEAD OIL & GAS, LTD. 03631 CHAPMAN, J. D. "A" LULING-BRANYON NORTH SOUTH OIL, LLC 06471 CHARLOTTE WATERFLOOD UNIT NO. 2 CHARLOTTE (NAVARRO) ENERVEST OPERATING, L.L.C. 03274 CHARLOTTE WATERFLOOD UNIT NO. 3 CHARLOTTE (NAVARRO) ENERVEST OPERATING, L.L.C. 03404 CHARLOTTE WATERFLOOD UNIT NO. 4 CHARLOTTE (NAVARRO) ENERVEST OPERATING, L.L.C. 03275


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CHATO SUN T S H (OLMOS) SWIFT ENERGY OPERATING, LLC 14931 CHATO A SUN T S H (OLMOS) SWIFT ENERGY OPERATING, LLC 14943 CHATO 27 SUN T S H (OLMOS) VANGUARD PERMIAN, LLC 16958 CHAVEZ, ANTONIO MINERVA-ROCKDALE C-D OIL COMPANY, INC. 06395 CHECKMATE SOMERSET GREAT PLAINS RESOURCES, INC. 11753 CHERRY-BILSKY UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15737 CHERRY-TURK UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15866 CHERRY, PETER PALMER (POTH-B) ORIGIN PRODUCTION COMPANY, INC. 05500 CHERRY, PETER -A- PALMER (POTH-B) ORIGIN PRODUCTION COMPANY, INC. 05773 CHERRY, PETER -B- PALMER (WILCOX) ORIGIN PRODUCTION COMPANY, INC. 05673 CHERRY, PETER ET UX PALMER (POTH-B) ORIGIN PRODUCTION COMPANY, INC. 05251 CHESSHER DARST CREEK (BUDA) ENERGY 2000, INC. 14230 CHESSHER DARST CREEK (BUDA) GINCO OPERATING CO. 03230 CHEUSDE, MATHEW FAIRFIELD BLACKBIRD OIL & GAS, LLC. 07805 CHEW, H. W. LULING-BRANYON SPILLER, J. A. COMPANY 00998 CHICON CREEK COMANCHE-HALSELL (6500) RIO-TEX, INC. 14898 CHICON CREEK PILOSA (GLEN ROSE) RIO-TEX, INC. 15106 CHILDRESS EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16875 CHILDRESS, W. A. KAYE (NAVARRO) EMBREY OIL PRODUCTION CO. 02073 CHILDRESS, W. A. -A- KAYE (NAVARRO) EMBREY OIL PRODUCTION CO. 02397 CHILIPITIN, LTD. AUSTIN PIERCE (AUSTIN CHALK) CABOT OIL & GAS CORPORATION 17249 CHILIPITIN, LTD. BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 16162 CHILIPITIN, LTD. INDIO TANKS (PEARSALL) CABOT OIL & GAS CORPORATION 17190 CHITTIM WILDCAT CMR ENERGY, L.P. 14746 CHITTIM WILDCAT SHELL WESTERN E&P 15069 CHITTIM BRISCOE RANCH (EAGLEFORD) SHELL WESTERN E&P 15456 CHITTIM CHITTIM (AUSTIN CHALK) NEWFIELD EXPLORATION COMPANY 14297 CHITTIM CHITTIM (BUDA) NEWFIELD EXPLORATION COMPANY 14367 CHITTIM CHITTIM (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 14268 CHITTIM PENA CREEK (GEORGETOWN) SHELL WESTERN E&P 15044 CHITTIM "B" WILDCAT CMR ENERGY, L.P. 14689 CHITTIM "B" WILDCAT NEWFIELD MAVERICK BASIN LLC 14606 CHITTIM "B" CHITTIM (SAN MIGUEL) NEWFIELD MAVERICK BASIN LLC 14767 CHITTIM "B" SANER RANCH (SAN MIGUEL) NEWFIELD MAVERICK BASIN LLC 14681 CHITTIM HEIRS BRISCOE RANCH (EAGLEFORD) BLACKBRUSH O & G, LLC 16989 CHITTIM RANCH WILDCAT WAGNER OIL COMPANY 14221 CHITTIM RANCH 28 WILDCAT BIG SHELL OIL & GAS, INC. 16114 CHITTIM RANCH 80 M.F. JAKE LAWLESS (EDWARDS LIME) OIL-LYMPIA OIL AND GAS INC. 16011 CHITTIM-141 CHITTIM (BUDA) ROBIN, JACK, CO. 13238 CHITTIM, ANNIE E. CHITTIM (BUDA) SHAW, T. G. OIL COMPANY, LTD. 02335 CHITTIM, ANNIE E. CHITTIM,E. (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 08396 CHITTIM, MARSTELLA, MRS. CHITTIM (BUDA) DOLPHIN PETROLEUM, LP 03462 CHITTIM, N. J. SACATOSA (SAN MIGUEL #1 SAND) CONOCOPHILLIPS COMPANY 02082 CHITTIM, N.J. SACATOSA (OLMOS) CONOCOPHILLIPS COMPANY 14291 CHITTIM, N.J. SACATOSA (SAN MIGUEL #5 SD.) CONOCOPHILLIPS COMPANY 15010 CHRISTIAN-DUBOSE UNIT SATURN (NAVARRO) FAIR OIL, LTD. 10629 CHRISTIAN, BUCK NEW SWEDEN THRALL OPERATING COMPANY, INC. 01286 CHRISTIAN, HENRY E. -A- CHRISTIAN (6800) DOMINION PRODUCTION COMPANY, LLC 07021 CHUDEJ UNIT A.W.P. (OLMOS) WELHAUSEN OPERATING COMPANY, LP 17148 CHUKAR UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16978 CHUMCHAL-LITTLEFIELD UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16013


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CHUPICK CHUPICK (OLMOS -A-) STARBURST ENERGY, INC. 11427 CHUPICK, JOHN F. -C- CHUPICK (OLMOS -A-) STARBURST ENERGY, INC. 11428 CHYLEK, E.M. CHARLOTTE (NAVARRO) ENERVEST OPERATING, L.L.C. 03276 CIBILDAK FAIRFIELD SIMCO OIL 12068 CIERVO SUN T S H (OLMOS) SWIFT ENERGY OPERATING, LLC 14922 CINCO J RANCH C EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16826 CINCO J RANCH G EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16810 CINCO J RANCH J EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16931 CINCO J. RANCH EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 15504 CINCO RANCH COMANCHE-HALSELL (6500) CMR ENERGY, L.P. 15036 CINCO RANCH EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 15466 CINCO RANCH D EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16267 CINCO RANCH H EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16266 CINCO RANCH I EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16757 CIRCLE 'T' PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15048 CIRCLE AC RANCH UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16897 CIRCLE T BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15287 CIRCLE T RANCH UNIT A BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15432 CIRCLE T UNIT A EAGLEVILLE (EAGLE FORD-1) EXCO OPERATING COMPANY, LP 15389 CITY OF GONZALES UNIT PEACH CREEK (AUSTIN CHALK) TDC ENGINEERING, INC. 08042 CITY OF PEARSALL PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 13077 CLACK, JAMES PEACH CREEK (AUSTIN CHALK) ATLAS FUEL SUPPLY, LTD. 07079 CLACK, JAMES D. JR. ET AL PEACH CREEK (AUSTIN CHALK) REDWOOD OPERATING, INC. 07408 CLARK LULING-BRANYON NORTH SOUTH OIL, LLC 15992 CLARK C EAGLEVILLE (EAGLE FORD-1) GEOSOUTHERN ENERGY CORPORATION 15702 CLARK-BOWER OIL UNIT LARREMORE BENCHMARK TEXAS PETROLEUM, LLC. 16268 CLARK, BILL /65 ACRE/ LULING-BRANYON EAGLE FORD OIL CO., INC. 01013 CLARK, MINNIE W., ETAL WINTER GARDEN, E. ( 3-D SAND) OSAGE OIL & GAS CO. 02222 CLARK, SALLIE LULING-BRANYON EAGLE FORD OIL CO., INC. 01134 CLARK, SALLIE LULING-BRANYON GINCO OPERATING CO. 01990 CLARK, SALLIE, ESTATE LULING-BRANYON AUSTIN OPERATING, LLC. 03463 CLARK, W. P. ETAL LULING-BRANYON ATKINSON, L. G., LLC 02194 CLARK, W. S. -B- LULING-BRANYON EAGLE FORD OIL CO., INC. 04014 CLAUNCH CALLIHAM ELDON OIL CO. 00162 CLAUNCH, B. C. CALLIHAM ELDON OIL CO. 00175 CLAYTIE PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 13475 CLAYTON, ROBERT MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 08674 CLEMENT EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 17252 CLEMENT, W. W. CHARLOTTE (NAVARRO) ENERVEST OPERATING, L.L.C. 03277 CLICK, ORAN PALMER (POTH-B) J&J OIL 08037 CLICK, ROGER W. PALMER (POTH-B) SYJ OIL & GAS, INC. 05289 CLICK,ROGER W. PALMER (POTH-B) ORIGIN PRODUCTION COMPANY, INC. 05683 CLIFT, BEN W. "A" LA VERNIA JSD OIL, LTD. 00874 CLIFT, J. D. LA VERNIA LAKE CHEROKEE PRODUCTION, LLC 00868 CLIFT, J.D. -A- LA VERNIA TEXAS COASTAL RESOURCES LLC 06292 CLIFTON, THOMAS E. MT. EDEN (CARRIZO-WILCOX, UP.) SELLERS LEASE SERVICE, INC. 13945 CLINE SOMERSET RAINER ENERGY, INC. 11281 CLINE -D- SOMERSET PETROSAURUS, INC. 10941 CLINE, ROBERT M. SOMERSET RAINER ENERGY, INC. 10972 CLINE, ROBERT M. -A- SOMERSET RAINER ENERGY, INC. 11282 CLINE, ROBERT M. -B- SOMERSET RAINER ENERGY, INC. 11284


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CLINE, ROBERT M. -E- SOMERSET RAINER ENERGY, INC. 11317 CLINE, ROBERT M. #4 SOMERSET RAINER ENERGY, INC. 11309 CLINE, ROBERT M.-C- SOMERSET RAINER ENERGY, INC. 11285 CLINGINGSMITH DALE-MCBRIDE HAZELETT OIL, INC. 04098 CLINGINGSMITH "A" DALE-MCBRIDE HAZELETT OIL, INC. 12699 CLUM, SHIRLEY L. SOMERSET 3-L DRILLING 11311 CLYDE PEARSALL (AUSTIN CHALK) BARBEE, R.L. OPERATING, INC. 12987 CME UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15500 CMWW A BRISCOE RANCH (EAGLEFORD) NEWFIELD EXPLORATION COMPANY 15262 CMWW B BRISCOE RANCH (EAGLEFORD) NEWFIELD EXPLORATION COMPANY 15242 CMWW UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16937 CMWW UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16838 CMWW UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16522 COATES TRUST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15648 COBB LULING-BRANYON AUSTIN OPERATING, LLC. 04005 COBB LEASE UNIT #1-CARTER CHICON LAKE RLU OPERATING, LLC 05874 COBB LEASE UNIT #1-MENDOZA CHICON LAKE RLU OPERATING, LLC 06489 COBB LEASE UNIT #1-OBAYA-CLARK CHICON LAKE RLU OPERATING, LLC 08619 COBB LEASE UNIT #1-STEWART CHICON LAKE RLU OPERATING, LLC 08649 COBB, J. F. LULING-BRANYON NORTEX OIL & GAS CORP. 03456 COBB, SAM MINERVA-ROCKDALE COOMER OIL COMPANY 06648 COBRA EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 15782 COBRA B EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16349 CODIGO NARANJA BIG WELLS (SAN MIGUEL) JB OIL & GAS WELL SERVICE 14725 COFFIELD MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04390 COFFIELD MINERVA-ROCKDALE ENDURO OIL COMPANY INC. 12243 COFFIELD MINERVA-ROCKDALE PRICE OPERATING, LLC 11856 COFFIELD PECAN GAP (5050) THREE FORKS OPERATING CO, LLC 12169 COFFIELD -A- MILBUR (NAVARRO) LEONARD, J. A. 04330 COFFIELD -B- MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04331 COFFIELD -C- MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04332 COFFIELD -G- CHEROKEE (NAVARRO) DASH PRODUCTION COMPANY, INC. 04663 COFFIELD -W- MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04365 COFFIELD "A" MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04396 COFFIELD CROTCH MILBUR, N. (WILCOX 2660) THREE FORKS OPERATING CO, LLC 15015 COFFIELD ESTATE CHEROKEE (NAVARRO) VICEROY PETROLEUM, LP 09869 COFFIELD UNIT MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04296 COFFIELD-CAMP PECAN GAP (5050) BETRO, INC. 12163 COFFIELD-COOK UNIT BULLOH (NAVARRO) VICEROY PETROLEUM, LP 07129 COFFIELD-HENSLEY DIXIE (NAVARRO B) ERNEST OPERATING COMPANY 11993 COFFIELD-STEWART CHEROKEE (NAVARRO) DASH PRODUCTION COMPANY, INC. 12355 COFFIELD-WRIGHT UNIT BULLOH (NAVARRO) VICEROY PETROLEUM, LP 07744 COFFIELD/CULPEPPER -A- MINERVA-ROCKDALE EC OIL CO. 10172 COFFIELD, H. H. MILBUR (NAVARRO) WOOD, GEORGE 04289 COFFIELD, H. H. MILBUR, SW (WILCOX 2800) VICEROY PETROLEUM, LP 03979 COFFIELD, H. H. -A- MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04299 COFFIELD, H. H. -A- MILBUR, SW (WILCOX 2800) VICEROY PETROLEUM, LP 04209 COFFIELD, H. H. -A- MINERVA-ROCKDALE SIERRA MINERALS, INC. 01192 COFFIELD, H. H. -B- MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04294 COFFIELD, H. H. -B- MINERVA-ROCKDALE SIERRA MINERALS, INC. 01238 COFFIELD, H. H., UNIT MILBUR (WILCOX 2760) THREE FORKS OPERATING CO, LLC 03774


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ COFFIELD, H.H. - HILL A MILBUR (NAVARRO) VICEROY PETROLEUM, LP 07595 COFFIELD, H.H. ESTATE MINERVA-ROCKDALE EC OIL CO. 09564 COFFIELD, J. F. MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 01225 COFFIELD, MARTIN MILBUR, N. (WILCOX 2660) VICEROY PETROLEUM, LP 04429 COFFIELD, T. R. MINERVA-ROCKDALE THREE-C PRODUCTION COMPANY 08998 COFFIELD, T. R. -A- MINERVA-ROCKDALE THREE-C PRODUCTION COMPANY 09799 COFFLAND, LEWIS F. SOMERSET CALK OIL COMPANY 07998 COKER, CHESNEY PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 12522 COLBERT, JACK MIDWAY (2300 OIL) DPM OPERATING 10050 COLDEWEY SUTIL (REEF) MARSHFIELD OIL & GAS, LLC 11954 COLDING, KATE SALT FLAT LULING O&G LLC 02359 COLDIRON PECAN GAP (5050) THREE FORKS OPERATING CO, LLC 11989 COLDIRON, A. MILBUR, N. (WILCOX 2660) THREE FORKS OPERATING CO, LLC 03848 COLE, MYRTLE MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 09986 COLE, MYRTLE MARIE MINERVA-ROCKDALE BLACK JACK SERVICES, L.L.C. 10008 COLEMAN BRISCOE RANCH (EAGLEFORD) BUFFCO PRODUCTION INC. 16926 COLEMAN PEARSALL (AUSTIN CHALK) MOODY OIL CO. 04997 COLLEY MINERVA-ROCKDALE BLACK JACK SERVICES, L.L.C. 09211 COLLINS/MCDONALD MARSHA DIRNETT, INC. 13717 COLLINS, CLARENCE C. COOKSEY CRYSTAL RESOURCES, INC 01960 COLLINS, CLARENCE C. REASOR (COOKSEY SAND) CRYSTAL RESOURCES, INC 02081 COLUNGA SOMERSET TEXAS SECONDARY OIL CORPORATION 10747 COLWELL-COOK 1 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16860 COLWELL-COOK 2 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16861 COLWELL-RAWLS 1 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16990 COLWELL-RAWLS 2 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16863 COLWELL, DOYLE JAYHAWK (AUSTIN CHALK) CHALLENGER OIL INC 05201 COMANCHE WILDCAT CMR ENERGY, L.P. 14748 COMANCHE RANCH WILDCAT NEWFIELD EXPLORATION COMPANY 14490 COMANCHE RANCH COMANCHE-HALSELL (6500) CMR ENERGY, L.P. 14381 COMANCHE RANCH FOUR ACES (AUSTIN CHALK) CMR ENERGY, L.P. 14613 COMANCHE RANCH PEARSALL (AUSTIN CHALK) NEWFIELD EXPLORATION COMPANY 17220 COMANCHE RANCH PENA CREEK (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 14849 COMBS, DAVID BIG FOOT BARNETT ENERGY, INC. 11946 CONE-DUBOSE UNIT CHRISTIAN (6800) LUCAS ENERGY, INC. 13216 CONLEY SALT FLAT CASTILLO OIL COMPANY LLC 08511 CONLEY SALT FLAT, WEST EAGLE FORD OIL CO., INC. 08805 CONLEY SALT FLAT, WEST S & T SALVAGE 07959 CONLEY -C- SALT FLAT CASTILLO OIL COMPANY LLC 12157 CONLEY -CC- SALT FLAT CASTILLO OIL COMPANY LLC 12158 CONLEY "B" SALT FLAT CASTILLO OIL COMPANY LLC 12156 CONLEY HICKMAN SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 15695 CONLEY UNIT SALT FLAT SHWJ OIL & GAS CO., INC. 10558 CONLEY/ARCO DUNLAP S & T SALVAGE 10385 CONLEY/ARCO #7 DUNLAP S & T SALVAGE 11470 CONLEY/ARCO 3&4 DUNLAP S & T SALVAGE 11735 CONLEY, LILLIAN DUNLAP FIVE STAR ENERGY, INC. 03769 CONLEY, O. SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 01510 CONN-NOAH UNIT GOOD LUCK (SAN MIGUEL) FORZA OPERATING, LLC 04184 CONN, M. W. GOOD LUCK (SAN MIGUEL) TRACKER OIL & GAS, INC. 04190 CONNOLLY, JETT TENNEY CREEK HAZELETT LEASE SERVICE, INC. 03231


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CONRAD, ALEX J. FAIRFIELD GINCO OPERATING CO. 08323 CONSTANZO FAIRFIELD GREAT PLAINS RESOURCES, INC. 11781 CONSTANZO, TONY FAIRFIELD SONORA OIL COMPANY 12357 CONTINENTAL PEARSALL (AUSTIN CHALK) LONE STAR OPERATING COMPANY 12816 COOK BULLOH (NAVARRO) VICEROY PETROLEUM, LP 08198 COOK EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16094 COOK PEARSALL (AUSTIN CHALK) TEXOKAN OPERATING, INC. 12611 COOK PILGRIM (AUSTIN CHALK) EHNOT ENGINEERING COMPANY 13452 COOK UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15797 COOK UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15762 COOK-CHANDLER EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16737 COOK-HENRY EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16938 COOK-PARITY MINERVA-ROCKDALE SHWJ OIL & GAS CO., INC. 09671 COOK-TEXSTAR MINERVA-ROCKDALE SHWJ OIL & GAS CO., INC. 09670 COOK, E. M. MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 03465 COOK, L.D. MAG (AUSTIN CHALK) SHIDLER, MARK L., INC. 12969 COOK, ZELDA MINERVA-ROCKDALE OMNI OIL & GAS, INC. 01253 COOKE TRES ENCANTO (ESCONDIDO) MILLENNIUM PETRO-PHYSICS, INC. 14680 COOKE TRES ENCANTO (ESCONDIDO) MILLENNIUM PETRO-PHYSICS, INC. 15103 COOKE A TRES ENCANTO (ESCONDIDO) MILLENNIUM PETRO-PHYSICS, INC. 15668 COOKE, C. N. COOKE RANCH (OLMOS) LEWIS PETRO PROPERTIES, INC. 14780 COOKE, C. N. TRES ENCANTO (ESCONDIDO) MILLENNIUM PETRO-PHYSICS, INC. 14941 COOKE, C.N. "A" COOKE (WILCOX 5130, WEST) TRACKER OIL & GAS, INC. 05971 COOKE, C.N. "C" COOKE (WILCOX 4100, W. RES. 2) TRACKER OIL & GAS, INC. 06072 COOKE, ETHYL P. COOKE (WILCOX 4300) TARINA OIL COMPANY 08059 COOKE, GEORGE H. SALT FLAT B. J. P. OPERATING 04605 COOKE, TRAVIS C. -A- SALT FLAT ORIGIN PRODUCTION COMPANY, INC. 04922 COOKE, TRAVIS C. "B" SALT FLAT ORIGIN PROD CO GONZALES PROP LLC 05710 COOKE, TRAVIS C. ET AL SALT FLAT ORIGIN PROD CO GONZALES PROP LLC 02579 COONS, ALBERT O. COOKSEY B W M PRODUCING CO. 00314 COOPER MINERVA-ROCKDALE SIERRA MINERALS, INC. 01246 COOPER SALT FLAT, WEST LULING O&G LLC 06720 COOPER -A- SOMERSET GREAT PLAINS RESOURCES, INC. 11671 COOPER -B- SOMERSET CRYSTAL RESOURCES, INC 10981 COOPER -F- SOMERSET GREAT PLAINS RESOURCES, INC. 10983 COOPER -H- SOMERSET SEEKER OIL COMPANY II, INC. 10984 COOPER -I- SOMERSET GREAT PLAINS RESOURCES, INC. 11131 COOPER -K- SOMERSET GREAT PLAINS RESOURCES, INC. 10986 COOPER -N- SOMERSET GREAT PLAINS RESOURCES, INC. 11364 COOPER -O- SOMERSET GREAT PLAINS RESOURCES, INC. 11366 COOPER -P- SOMERSET GREAT PLAINS RESOURCES, INC. 10987 COOPER -P-2 SOMERSET GREAT PLAINS RESOURCES, INC. 11537 COOPER -P-3 SOMERSET GREAT PLAINS RESOURCES, INC. 11538 COOPER -T- SOMERSET GREAT PLAINS RESOURCES, INC. 11073 COOPER -Y- SOMERSET GREAT PLAINS RESOURCES, INC. 10989 COOPER "H" SALT FLAT, WEST LULING O&G LLC 17247 COOPER UNIT SOMERSET GREAT PLAINS RESOURCES, INC. 06418 COOPER W SOMERSET GREAT PLAINS RESOURCES, INC. 11807 COOPER-J- SOMERSET CRYSTAL RESOURCES, INC 10985 COOPWOOD SALT FLAT W.W. ENERGY 10699 COPELAND KARNES FIRST SHOT (AUSTIN CHALK) LUCAS ENERGY, INC. 13598


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ COPELAND UNIT SALT FLAT OFFSPRING WELL SALVAGE 03071 COPELAND-GSI #1H FIRST SHOT (AUSTIN CHALK) BOUNDARY VENTURES, INC. 12758 COPELAND, C. FIRST SHOT (AUSTIN CHALK) PROGENIES OPERATING LLC 12690 COPELAND, R. P. "A" BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 15107 COPPEDGE PEARSALL (BUDA LIME) BLACKBRUSH O & G, LLC 16443 COPPS ET AL EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15352 COPPS ET AL PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, INC. 12349 COPPS ET AL #1 PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, INC. 13313 COPPS ET AL "B" PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, INC. 13373 COPPS ET AL"A" PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, INC. 13500 COPPS LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15915 COQUAT EZZELL SAN CAJO OIL COMPANY 00568 CORA MALONE SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 15469 CORBIN PEARSALL (AUSTIN CHALK) U.S. ENERCORP, LTD. 15260 CORLEY DARST CREEK (BUDA) ENERGY 2000, INC. 14229 CORLEY DARST CREEK (BUDA) GINCO OPERATING CO. 03710 CORNELIUS, P. F. JR. ZION HILL (AUSTIN CHALK) ZION OIL & GAS INC. 12697 CORNER S RANCH EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17210 CORNER S RANCH MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16040 CORNETT PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 17130 CORNFIELD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15934 CORONA LA VERNIA FUEGO ENERGY, LLC 06751 CORONA, JOHN MINERVA-ROCKDALE THREE-C PRODUCTION COMPANY 11408 CORTEZ 'C' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16608 CORTEZ 'D' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16610 CORTEZ 'E' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16800 CORTEZ 'F' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16804 CORTEZ 'G' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16812 CORTEZ "A" EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15834 CORTEZ "B" EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15832 CORVETTE A EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 17018 CORVETTE C EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16641 COSEY-DORN -A- LULING-BRANYON SOTOL ENERGY, INC. 07057 COSEY-DORN -B- LULING-BRANYON SOTOL ENERGY, INC. 07273 COSTATEX FEE LULING-BRANYON CLICK ENERGY COMPANY 01121 COTTEN CHEROKEE (NAVARRO) SHELDON RESOURCES, L.P. 04287 COTULLA SWD EAGLEVILLE (EAGLE FORD-1) HIGH SIERRA WATER-EAGLE FORD,LLC 16676 COULTER -B- MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 01182 COULTER -P- MINERVA-ROCKDALE VICEROY PETROLEUM, LP 01267 COUNTISS DAN COUNTISS (WRIGHT SAND) HAWTHORN ENERGY PARTNERS, LLC 14323 COUNTISS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15787 COUNTISS SOPHIA (WILCOX CONSOL.) HAWTHORN ENERGY PARTNERS, LLC 14533 COUNTISS UNIT I EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16290 COUNTISS UNIT II EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16433 COUNTISS UNIT III EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17159 COURAND, JOSEPH A. PLEASANTON, S. (CARRIZO SAND) RAY JR. CO., INC. 01386 COUSER, J.A. KYOTE GINCO OPERATING CO. 09562 COUSINS COUSINS (SLICK-WILCOX) MAVERICK ENERGY & DEV. CORP. 14284 COVELL, MATILDA H., ETAL GAS RIDGE R.D. OIL COMPANY 00638 COVER LA VERNIA SEACO PRODUCTION 06265 COVERS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16905


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ COVERT, F. M. NCT A-4 PENA CREEK (SAN MIGUEL 2ND) 3-G OPERATING COMPANY 04618 COVERT, F. M. NCT A-4 PENA CREEK (SAN MIGUEL 3RD) 3-G OPERATING COMPANY 04544 COVERT, F. M. NCT B-4 PENA CREEK (SAN MIGUEL 3RD) 3-G OPERATING COMPANY 04414 COVERT, F.M. MCT B-3 PENA CREEK (SAN MIGUEL 3RD) 3-G OPERATING COMPANY 04545 COVEY CHAPEL PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 07331 COWAN, C. M. KAYE (NAVARRO) TEXAS COASTAL RESOURCES LLC 00773 COWARD, H. H. IMOGENE (BUDA) PEARL, BILL H. PRODUCTIONS, INC. 05618 COWARD, H. H. -B- /ACT. #1/ IMOGENE, S. (CARRIZO) BRYMER CONTRACTING INCORPORATED 00690 COWARD, H. H. -B- /ACT. #2/ IMOGENE, S. (CARRIZO) BRYMER CONTRACTING INCORPORATED 00691 COWARD, H. H., -B- ACC. #2 IMOGENE, SOUTHEAST BRYMER CONTRACTING INCORPORATED 02892 COWARD, H. H., ACT. #1 IMOGENE (ESCONDIDO A) PEARL, BILL H. PRODUCTIONS, INC. 03925 COWARD, H.H. IMOGENE (ESCONDIDO B) PEARL, BILL H. PRODUCTIONS, INC. 07860 COWARD, H.H. A/C 4 IMOGENE PEARL, BILL H. PRODUCTIONS, INC. 06918 COWDEN, W. L. CHARLOTTE, NORTH 3-L DRILLING 04054 COWEY, J. M. GIDDINGS (AUSTIN CHALK-1) ATLAS FUEL SUPPLY, LTD. 07403 COX EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15496 COX SALT FLAT EAGLE FORD OIL CO., INC. 06469 COX, L. L. LULING-BRANYON EAGLE FORD OIL CO., INC. 01139 CRABB RANCH EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 15770 CRAIG EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16101 CRANDALL UNIT SALT FLAT BAIR'S LEASE SERVICE, INC. 06872 CRAWFORD PEARSALL (AUSTIN CHALK) ENCINO OPERATING COMPANY, INC. 12882 CRAWFORD RANCH A UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16817 CRAWFORD, DAVID MINERVA-ROCKDALE THREE-C PRODUCTION COMPANY 12148 CRAWFORD, GLADYS DALE-MCBRIDE HAZELETT OIL, INC. 13577 CRAWFORD, LEONARD FAIRFIELD BAR M PETROLEUM CO. 07375 CREEK FAIRFIELD CALK, ROGER D. 07695 CREEK PEARSALL (AUSTIN CHALK) BOSQUE DISPOSAL SYSTEMS, LLC 16316 CRENSHAW 27 AC. LULING-BRANYON AUSTIN OPERATING, LLC. 04003 CRENSHAW 37 AC. LULING-BRANYON AUSTIN OPERATING, LLC. 04027 CRENSHAW, L. LYTTON SPRINGS GUNN, H. L. OIL CO. 05758 CRISP, WILLARD E. 26 ATLEE (OLMOS) LEWIS PETRO PROPERTIES, INC. 15041 CRISWELL-PAVELKA LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16238 CROMWELL WILDCAT CHEYENNE PETROLEUM COMPANY 15859 CROMWELL EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 15595 CROSS S PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16613 CROSS-SCHULZE UNIT PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 13859 CROSSHAIR UNIT I DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16638 CROSSHAIR UNIT II DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15984 CROSSHAIR UNIT III DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16244 CROUCH WILDCAT MAVERICK ENERGY GROUP, INC. 17133 CROUCH BIG FOOT MAVERICK ENERGY GROUP, INC. 16372 CROUCH CROWN, E. (NAVARRO) JENEX PETROLEUM CORPORATION 10028 CROUCH, TOMMY LEMING (2934 SAND) STRATA STAR PETROLEUM CORP. 09061 CROW UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16803 CROW UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16734 CROW UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16776 CROW UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16659 CROW UNIT V LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16645 CROWTHER CLOETER (WILCOX 5800) OMEGA ENERGY, LLC 14887 CROWTHER KYOTE IMPETRO OPERATING LLC 10368


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ CROZIER WILLIAMSON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16122 CRUNK-CASKEY UNIT CHRISTIAN (6800) PONTIAC OIL, INC. 12803 CRUZ, LEO SOMERSET WSM 06610 CST UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17160 CUDE, W. T. BUCHANAN W.W. ENERGY 00157 CUDE, W. T. -A- BUCHANAN XPLORE NATURAL RESOURCES LLC 00141 CUDE, W. T. -B- BUCHANAN XPLORE NATURAL RESOURCES LLC 00142 CUDE, W. T. -C- BUCHANAN XPLORE NATURAL RESOURCES LLC 00143 CUDE, W. T. -D- BUCHANAN XPLORE NATURAL RESOURCES LLC 00144 CUDE, W.T. BUCHANAN XPLORE NATURAL RESOURCES LLC 04907 CUELLAR EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17015 CUEVAS-MCNAB FAIRFIELD OILEX INT'L INVESTMENTS, INC. 09782 CULPEPPER WILDCAT EOG RESOURCES, INC. 16755 CULPEPPER EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15996 CULPEPPER "A" FIRST SHOT (AUSTIN CHALK) CHESAPEAKE OPERATING, INC. 13478 CULPEPPER UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15742 CULPEPPER 1H UNIT PEARSALL (AUSTIN CHALK) RICOCHET ENERGY, INC. 16214 CULPEPPER 2H UNIT PEARSALL (AUSTIN CHALK) RICOCHET ENERGY, INC. 16115 CULPEPPER-A- SMILEY, SE (AUSTIN CHALK) WILSON, BILLY R. 07313 CULPEPPER-COFFIELD MINERVA-ROCKDALE PENROD OIL COMPANY OF TEXAS, INC 09250 CULPEPPER, CURTIS L. PEARSALL (AUSTIN CHALK) WOOLDRIDGE OIL & GAS 05104 CUMBERLAND FAIRFIELD CUMBERLAND, CHARLIE 08778 CUMPIAN, A. G. BIG FOOT STARBURST ENERGY, INC. 02441 CUNNINGHAM FAIRFIELD CALK, ROGER D. 07982 CUNNINGHAM GIDDINGS (AUSTIN CHALK-1) ANADARKO E&P ONSHORE LLC 14028 CUNNINGHAM UNIT SOMERSET GREAT PLAINS RESOURCES, INC. 10936 CUNNINGHAM, O. J. MINERVA-ROCKDALE NORTHLAND PETROLEUM, INC. 09907 CUSACK FIRST SHOT (AUSTIN CHALK) EOG RESOURCES, INC. 14147 CUSACK RANCH EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15368 CUSACK-CLAMPIT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15258 CUTTER CREEK EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15518 CUTTER CREEK 'A' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16281 CUTTER CREEK 'B' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16282 CYCLONE PEARSALL (AUSTIN CHALK) BRYMER, JACK CONTR. SERV. 12904 CYCLONE PEARSALL (AUSTIN CHALK) OMNI OPERATING COMPANY(A) 13856 C4 RANCH EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16002 C5 EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15512 D H UNIT INDIO TANKS (PEARSALL) MURPHY EXPL. & PROD. CO. - USA 17179 D. FOREMAN UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15726 D.G. TILLER SALT FLAT (EDWARDS) EAGLE FORD OIL CO., INC. 15807 D.L. RANCH EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16356 D&L OIL PRODUCERS CO. LA VERNIA D. & L. OIL PRODUCING CO. 08043 DAISY BUCHANAN TRIPLE C OIL INC. 13762 DALE LIMESTONE UNIT DALE-MCBRIDE EXOIL RESOURCES, INC. 04380 DALKOWITZ, CYRIL CROWN, E. (NAVARRO) 3-L DRILLING 00337 DALROS-HJH FAIRFIELD GINCO OPERATING CO. 12093 DALROS, DON E. FAIRFIELD SONORA OIL COMPANY 05426 DALSEM, VAN EL INDIO, N. (OLMOS A-11) BETA OIL CORPORATION 10161 DALTREY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17059 DAND AND CO UNIT A LAS BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16143 DAND AND CO UNIT I B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15974


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ DAND AND CO UNIT II B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16157 DANDO LA VERNIA DOEGE, DONALD 07213 DANIEL, M. K. -A- SIMPSON-MANN (CANYON) TEMA OIL AND GAS COMPANY 14357 DANIEL, M. K. "A" SIMPSON-MANN (CANYON) TEMA OIL AND GAS COMPANY 14200 DANNELLY DANNELLY (AUSTIN CHALK) ROYAL TEXAS PETROLEUM 10377 DANNELLY, N. LYTTON SPRINGS ROYAL TEXAS PETROLEUM 11737 DARBY FEE MIDWAY (2300 OIL) SELLERS LEASE SERVICE, INC. 13723 DARBY, LEE ROY MIDWAY (2300 OIL) THREE FORKS OPERATING CO, LLC 12145 DAUCHY WEST FENTRESS (1750) BOB-KAT OIL CO. 12056 DAVENPORT SALT FLAT LULING O&G LLC 03636 DAVENPORT NORTH PASTURE SALT FLAT CARTER CATTLE & CRUDE COMPANY 09328 DAVENPORT UNIT NIXON TIMBERWOLF E&P LLC 13503 DAVENPORT, FRED BENTON CITY (ANACACHO) BLACKBIRD OIL & GAS, LLC. 15279 DAVID HOLDSWORTH ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15619 DAVID RIHN, JR. FAIRFIELD NAILS OPERATING COMPANY LLC 02471 DAVIDSON BEAR CREEK AMERICAN EAGLE RESOURCES, INC. 03184 DAVIDSON, D. A. PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 12844 DAVIDSON, G. BIG FOOT IMPETRO OPERATING LLC 00113 DAVIDSON, G.O. KYOTE IMPETRO OPERATING LLC 11056 DAVIDSON, GAYLON O. KYOTE GINCO OPERATING CO. 10521 DAVIES, S. B. PEARSALL (AUSTIN CHALK) JENEX PETROLEUM CORPORATION 04744 DAVIES, S.B. ET AL PEARSALL (NAVARRO SAND) JENEX PETROLEUM CORPORATION 07022 DAVILLA, JAMES, ETAL, UNIT 1 SALT FLAT KIDD PRODUCTION CO. 02977 DAVIS C.J.P. (REEF) CRYSTAL RESOURCES, INC 10544 DAVIS LINDSEY, S.E.(NAVARRO) CHRISTILIN PETROLEUM CORPORATION 09803 DAVIS SALT FLAT O.G.O. REFINING 02217 DAVIS - MCCRARY TRUST WILDCAT QUORUM ENERGY COMPANY 15877 DAVIS -A- SALT FLAT B. J. P. OPERATING 01457 DAVIS -B- SALT FLAT B. J. P. OPERATING 01458 DAVIS A EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 17042 DAVIS B EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 17088 DAVIS B - WILSON SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 15350 DAVIS HORD "77" GULFSTAR (CANYON) GULFSTAR PROPERTIES, INC. 15085 DAVIS RANCH EAGLEVILLE (EAGLE FORD-1) EF ENERGY, L.L.C. 16816 DAVIS-MCCRARY PROPERTY TRUST EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15414 DAVIS/SUNSHINE SOMERSET RAMPAGE EXPLORATION, INC. 08457 DAVIS, EUREL ETAL LYTTON SPRINGS MULTIPAY ENERGY, INC. 05879 DAVIS, J. J. SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 01511 DAVIS, J. J. EST. SALT FLAT O.G.O. REFINING 01477 DAVIS, J. J. ESTATE SALT FLAT (EDWARDS) O.G.O. REFINING 15177 DAVIS, M. M. -B- CHARLOTTE (NAVARRO) ENERVEST OPERATING, L.L.C. 03278 DAVIS, M.M. CHARLOTTE (NAVARRO) BLEDSOE, R.K. TRUST OIL OPERATOR 05337 DAVIS, MILTON C.J.P. (REEF) RAMPAGE EXPLORATION, INC. 09476 DAVIS, MILTON -B- CROWN, E. (NAVARRO) TANDEM ENERGY CORPORATION 10572 DAVIS, RUTH PEARSALL (AUSTIN CHALK) OFFSPRING WELL SALVAGE 12432 DAVIS, RUTH DAKIN PEARSALL (AUSTIN CHALK) BLOCK T OPERATING, LLC 06958 DAVIS, SADIE SALT FLAT BURRIS OPERATING CO. 09697 DAVIS, W. F. SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 01461 DAVIS, W. F. SALT FLAT JAVELINA OIL & GAS CO. 02937 DAVIS, W. F. -C- SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 01512 DAVIS, W. F., -B- SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 03832


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ DAVIS, W. T. SPILLER DELRAY OIL, INC. 01679 DAVIS, WESTON, UNIT SALT FLAT BAIR'S LEASE SERVICE, INC. 02950 DAWE -B- PILGRIM (AUSTIN CHALK) J.W. SERVICE COMPANY 13450 DAY RANCH ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17262 DAY, DAN ET AL LYTTON SPRINGS ROYAL TEXAS PETROLEUM 10278 DE LA GARZA EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16326 DEAGEN, BILL & SONS LTD -B- KAYE (NAVARRO) DEAGEN, BILL & SONS, LTD. 07302 DEATLEY-GRIFFIN UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15660 DEATLEY-HOLLUB UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15673 DEATLEY-MAY UNIT A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15637 DEATLEY-MAY UNIT B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15681 DEDMAN BRISCOE RANCH (EAGLEFORD) PETROQUEST ENERGY, L.L.C. 15793 DELAFUENTE-TRENDA SOMERSET GINCO OPERATING CO. 11903 DELAO, OPHELIA FAIRFIELD CALK, ROGER D. 07669 DELEON-BOYD BEAR CREEK RED BIRD PETROLEUM CORP. 11919 DEMMER, H. C. FIRST SHOT (AUSTIN CHALK) GENESIS WELL SERVICE 13063 DENISON SALT FLAT WHITETAIL PRODUCTION 07647 DENISON, J.E. FAIRFIELD OILEX INT'L INVESTMENTS, INC. 08523 DENMAN PENA CREEK (GEORGETOWN) SHELL WESTERN E&P 14622 DENMAN -A- DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02736 DENMAN -A- DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02784 DENMAN -C- DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02737 DENMAN -C- DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02785 DENMAN A 4H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14570 DENMAN A 5H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14560 DENMAN C 3H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14683 DENMAN C 2H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14697 DENMAN, C 1H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14657 DENMAN, DAN J. DARST CREEK (BUDA) DELRAY OIL, INC. 02949 DENMAN, DAN J., -B- DARST CREEK (BUDA) DELRAY OIL, INC. 02809 DENMAN, G. M. DARST CREEK (BUDA) DJ EXPLORATION, INC. 02822 DENMAN, G.M. JR. DARST CREEK (BUDA) GARRISON LTD. 07452 DENMAN, GILBERT M., JR., ET AL DARST CREEK (BUDA) DELRAY OIL, INC. 03907 DENMAN, L. G. EST. DARST CREEK (BUDA) DELRAY OIL, INC. 02815 DENMAN, L.G. "A" DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 15087 DENMAN,DAN J. DARST CREEK (EDWARDS) DELRAY OIL, INC. 05630 DENNING, GEO. A. LA VERNIA CALTEX ENERGY CO. 05992 DENNING, H. F. ACLETO CREEK (POTH SAND) HUNT, W. F. 00001 DENNIS DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16452 DENNIS UNIT B DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16121 DENNIS UNIT D DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16472 DENNIS-DUBE JEANIE (SERPENTINE) ATLAS OPERATING LLC 04784 DENNY, FRANK CHICON LAKE RLU OPERATING, LLC 06941 DERWARD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17125 DESMUKE -Z- CROWN, E. (NAVARRO) JB OIL & GAS WELL SERVICE 10573 DESPAIN, GENE LA VERNIA LA VERNIA OIL 05959 DESPAIN, I. DALE-MCBRIDE U-P ENGINEERING 06164 DESPAIN, W. E. LA VERNIA W.W. ENERGY 01821 DEVERS SOMERSET SEAGULL OPERATING CO., INC. 11237 DEVIL'S WATERHOLE UNIT DEVILS WATER HOLE (7000) CHAPARRAL ENERGY, L.L.C. 03996 DEVINE-NUTS EAGLEVILLE (EAGLE FORD SOUR) CHESAPEAKE OPERATING, INC. 15221


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ DEVINEY, ADDIS LULING-BRANYON GINCO OPERATING CO. 02532 DIAMOND H RANCH BRISCOE RANCH (EAGLEFORD) ANADARKO E&P ONSHORE LLC 15205 DIAMOND H STATE BRISCOE RANCH (EAGLEFORD) ANADARKO E&P ONSHORE LLC 15206 DIAMOND HEAD -A- C.J.P. (REEF) CALK, ROGER D. 09729 DIAMOND HEAD -B- C.J.P. (REEF) CALK, ROGER D. 09984 DIAS, LUCILLE CHICON LAKE HARDWICK, ROSS H. OIL COMPANY 06429 DIAZ ESPADA MISSION KERR, JONATHAN ALLAN 00564 DIAZ UNIT MONKSFIELD (350 SAND) ROOT DRILLING COMPANY 11826 DIAZ, P.A. FAIRFIELD CLOVER OIL & GAS, INC. 08594 DICKE DICKE (LOWER WRIGHT) AMERICO ENERGY RESOURCES, LLC 14472 DICKE DICKE (WALES SAND) AMERICO ENERGY RESOURCES, LLC 14639 DICKENS SOMERSET SEEKER OIL COMPANY, INCORPORATED 11259 DICKERSON, CLAUDE SALT FLAT FLAMINGO OIL & GAS 02126 DICKERSON, WALTER E. ESTATE BIG FOOT LILLIAN OIL & GAS, LLC 08092 DICKIE, F. H. DICKE (WRIGHT SAND) AMERICO ENERGY RESOURCES, LLC 14492 DICKIE, F. H. WRIGHT HOOK (WALES SAND) AMERICO ENERGY RESOURCES, LLC 14647 DICKINSON A.W.P. (OLMOS) ESCONDIDO RESOURCES II, LLC 09302 DICKINSON UNIT E EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15410 DICKINSON UNIT F EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15676 DICKSON PEARSALL (AUSTIN CHALK) STONEGATE OPERATORS, INC. 05545 DICKSON-ALLEN EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15521 DICKSON, R.D. PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 05465 DIECKOW, C. JR. LA VERNIA 3-L DRILLING 05761 DIETERT SUN T S H (WILCOX) GULF COAST ACQUISITIONS CO. L.C. 15226 DIETZE UNIT A EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15872 DIKES ESTATE PILGRIM (AUSTIN CHALK) BEDFORD OIL & GAS, INC. 13395 DILLEY SOUTH UNIT PEARSALL (AUSTIN CHALK) L & J EXPLORATION, LLC 12366 DILLEY UNIT -A- PEARSALL (AUSTIN CHALK) BELLOWS OPERATING CO., L. C. 12601 DILLEY UNIT "C" PEARSALL (AUSTIN CHALK) RCLJ CONSTRUCTION, INC. 14782 DILLEY UNIT "C" PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 12988 DILLON-HALL-A- SALT FLAT J & B ENERGY CO.,INC. 08174 DILLON-HALL-B- SALT FLAT LULING O&G LLC 09761 DILLON, B. W. -A- CATARINA, E. (OLMOS A) L & J EXPLORATION, LLC 04811 DILWORTH DILWORTH (CARRIZO) HUGHES, DAN A. COMPANY, L.P. 14012 DILWORTH EAGLEVILLE (EAGLE FORD-1) TALISMAN ENERGY USA INC. 16928 DILWORTH, FRANCES EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15438 DILWORTH, J.C. ET AL DILWORTH RANCH (MULA) WALKING X OIL CO. 08075 DIMMIT S-4 PEARSALL (AUSTIN CHALK) KILLAM OIL CO., LTD. 15634 DIMMIT WOODS PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 13274 DIMMIT-WOOD PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14562 DIMMIT-WOOD UNIT PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14596 DINGES BATEMAN (AUSTIN CHALK) E-P OIL CO. INC. 13588 DINGES BUCHANAN AUSTIN OPERATING, LLC. 06974 DINGES BUCHANAN TRINIDAD PETROLEUM, INC. 11608 DINGES A-1 BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 13819 DINGES-B- BATEMAN (AUSTIN CHALK) E-P OIL CO. INC. 13658 DINGES, M. Y. DALE-MCBRIDE C. JACKSON CLARK INVESTMENTS 04106 DINGES, M.C. BUCHANAN FOYORO ENERGY, LLC 13459 DINGES, M.Y. -A- DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 11927 DINGES, W. E. BATEMAN (AUSTIN CHALK) E-P OIL CO. INC. 13550 DINGES, W. E. BUCHANAN AUSTIN OPERATING, LLC. 01899


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ DINGES, W. E. -A- BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 13998 DINGES, W. E. -C- BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 13999 DINGES, W.E. -D- BATEMAN (AUSTIN CHALK) E-P OIL CO. INC. 13601 DINGES, W.E. -F- BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 14003 DINGES, W.E. 'Z' BATEMAN (AUSTIN CHALK) AUSTIN OPERATING, LLC. 13457 DINSMOOR IMOGENE, EAST (EDWARDS LIME) CHAPARRAL NATURAL RESOURCES,INC. 15021 DINSMOOR -B- DINSMOOR (CARRIZO) BAY ROCK OPERATING COMPANY 00511 DINSMOOR, NELLE DINSMOOR (CARRIZO) BAY ROCK OPERATING COMPANY 00510 DINSMOOR, NELLE DINSMOOR (QUEEN CITY) BAY ROCK OPERATING COMPANY 00512 DISCHER -B- A.W.P. (OLMOS) XTO ENERGY INC. 10486 DISCHER EF EAGLEVILLE (EAGLE FORD-1) SWIFT ENERGY OPERATING, LLC 15825 DISCHER, H.A. A.W.P. (OLMOS) XTO ENERGY INC. 09153 DISCHER, H.A. -A- A.W.P. (OLMOS) XTO ENERGY INC. 09507 DISMUKES SALT FLAT, WEST FINALY RESOURCES LLC 07958 DISMUKES "A" SALT FLAT FINALY RESOURCES LLC 06449 DISMUKES, E. L. ELAINE (5100) WHITE MARLIN OPERATING CO, LLC 14448 DISMUKES, E.L. ELAINE (OLMOS) WHITE MARLIN OPERATING CO, LLC 03357 DITTMAR & HASKELL LINNE (POTH -A- SAND) GAUNTT, INC. 00959 DIVIN/WILHITE LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 08241 DIVIN, L. V. LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 10528 DIVIN, L.V. #5 LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 10367 DIVIN, L.V. ET AL -A- LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 08257 DIVIN, MICHAEL -A- LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 08276 DIVIN, TONY LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 08266 DIVIN, TONY -A- LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 06502 DIVIN, TONY POOL UNIT LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 07614 DIVIN,L.V./KELPETRO LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 07947 DIX & MCKEAN (CHEVRON) DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02723 DIX & MCKEAN "B" 3H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14640 DIX & MCKEAN C DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02777 DIX -B- DARST CREEK (BUDA) GINCO OPERATING CO. 02715 DIX -C- DARST CREEK (BUDA) GINCO OPERATING CO. 03654 DIX -D- DARST CREEK (BUDA) GINCO OPERATING CO. 02714 DIX B DARST CREEK (BUDA) ENERGY 2000, INC. 14226 DIX C DARST CREEK (BUDA) ENERGY 2000, INC. 14227 DIX MCKEAN B 2H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14498 DIX MCKEAN B 5H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14686 DIX-MCKEAN "B" UNIT DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02745 DIX-MCKEAN "B" UNIT DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02788 DIX-MCKEAN "B" 6-H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14976 DIX, THOMAS (CHEVRON) DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02724 DIX, THOMAS -C- DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02778 DIX, THOMAS -C- 2HST DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14568 DIX, THOMAS 'A' DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02750 DIX, THOMAS 'A' DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02791 DIX, THOMAS "A" 2H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14600 DIX, THOMAS "A" 3H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14726 DIX, THOMAS "C" 3H ST DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14594 DIX, THOMAS "C" 4H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14475 DK EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 17293 DOB JAMES SOMERSET RAOL COMPANY, THE 01604


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ DOBIE MARTIN UNIT EAGLEVILLE (EAGLE FORD-1) CINCO NATURAL RESOURCES CORP. 17131 DODSON SAND PILE (AUSTIN CHALK) RIO-TEX, INC. 15143 DOEGE, A. LA VERNIA DONOCO OIL COMPANY 02320 DOEGE, ALBERT LA VERNIA AGAPE ENERGY INC. 04554 DOEGE, ALFRED LA VERNIA LA VERNIA OIL 00850 DOEGE, EDWARD LA VERNIA DONOCO OIL COMPANY 12176 DOEGE, EMIL LA VERNIA TEXAS COASTAL RESOURCES LLC 05937 DOEGE, EMIL -A- LA VERNIA TEXAS COASTAL RESOURCES LLC 05940 DOEGE, EMIL -B- LA VERNIA SOURCE PETROLEUM INC. 02436 DOEGE, EMIL -B- LA VERNIA TEXAS COASTAL RESOURCES LLC 06216 DOEGE, ERNEST LA VERNIA SEACO PRODUCTION 07211 DOEGE, HARRY LA VERNIA J.A.G. OIL & GAS 02202 DOEGE, HERMAN LA VERNIA DONOCO OIL COMPANY 11383 DOEGE, RICHARD LA VERNIA DOEGE, DONALD 02875 DOEGE, RICHARD LA VERNIA DONOCO OIL COMPANY 00836 DOEGE, WARD LA VERNIA LEVANT ENERGY LLC 08857 DOEGE, WILBERT LA VERNIA DOEGE, DONALD 07212 DOLAN, EMILY WINTER GARDEN (OLMOS) DOUBLE EAGLE PETROLEUM CORP 05443 DOLLINGER THRALL THRALL OPERATING COMPANY, INC. 01735 DOMINGUEZ OIL UNIT CROWN, E. (NAVARRO) PARK AVENUE RESOURCES, INC. 11527 DONAHO, W.T. ET AL FLORESVILLE, E. (POTH B 2800) TRIPLE H PRODUCTION 04954 DONNELL 'B' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15847 DONNELL 'C' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15995 DONNELL "A" EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15645 DONNELL LOWE PASTURE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15935 DONNELL MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16306 DOOLEY A SOMERSET BETA OIL CORPORATION 15808 DOOLEY AA SOMERSET BETA OIL CORPORATION 15809 DOOLEY B SOMERSET BETA OIL CORPORATION 16036 DOOLEY, ROSALIE SHAW -A- SOMERSET BETA OIL CORPORATION 10836 DOOLEY, ROSALIE SHAW -B- SOMERSET EMERALD BAY ENERGY, INC. 11723 DOOLEY, ROSALIE SHAW -B- SOMERSET HABANERO OPERATING, INC. 11178 DOOLEY, ROSALIE SHAW -BB- SOMERSET HABANERO OPERATING, INC. 11724 DOOLEY, ROSALIE SHAW -C- SOMERSET HABANERO OPERATING, INC. 11182 DORFMEISTER, L. CHICON LAKE HARDWICK, ROSS H. OIL COMPANY 03024 DORMAN-SMITH -A- MINERVA-ROCKDALE JFC CONSTRUCTION LLC 11717 DORMAN-SMITH -B- MINERVA-ROCKDALE JFC CONSTRUCTION LLC 11716 DORN UNIT DUNLAP BLACKMAR, JIM OIL OPERATOR 08003 DORN-REECE UNIT LULING-BRANYON SOTOL ENERGY, INC. 13824 DORN, JAMES LULING-BRANYON SOTOL ENERGY, INC. 01118 DORN, LEROY J. DUNLAP KIDD PRODUCTION CO. 06757 DORNAK PEARSALL (AUSTIN CHALK) WEN-BE 10107 DOROTHY SPRINGS EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16789 DOROTHY SPRINGS B EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 17206 DOROUGH UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16409 DORSET-MERRIWEATHER LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01063 DORSET-TILLER LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01064 DOSS BULLOH (POTH) E P C OIL & GAS, INC. 08132 DOSSETT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16750 DOUBLE BARREL UNIT PEARSALL (AUSTIN CHALK) ZORRA OIL & GAS 12925 DOUBLE DEUCE BULLOH (POTH) DOUBLE DEUCE OPERATING 12666


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ DOUBLE DEUCE BRAVO BULLOH (POTH) DOUBLE DEUCE OPERATING 13116 DOUBLE DEUCE CHARLIE BULLOH (POTH) DOUBLE DEUCE OPERATING 13117 DOUBLE K EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17230 DOUBLE K SAN MIGUEL CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 15698 DOUBLE K NORTH SAN MIGUEL CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 14899 DOUGHERTY LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17167 DOUGHERTY UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17170 DOUGHERTY UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17172 DOVE SOMERSET SEAGULL OPERATING CO., INC. 11229 DOWDA, JAMES SOMERSET GREAT PLAINS RESOURCES, INC. 11145 DOWDY CHRISTINE, SE. (WILCOX) WYNN-CROSBY OPERATING, LTD. 14917 DOWDY, A. E. DARST CREEK (BUDA) DELRAY OIL, INC. 02716 DOWDY, A. E. DARST CREEK (BUDA) SIGNAL OIL AND GAS COMPANY 02711 DOWDY, A. E. DARST CREEK (EDWARDS) SIGNAL OIL AND GAS COMPANY 14358 DOWDY, A. E. -C- DARST CREEK (BUDA) DELRAY OIL, INC. 02757 DOWDY, A. E. -C- DARST CREEK (EDWARDS) DELRAY OIL, INC. 02798 DOWDY, A. E., -B- DARST CREEK (BUDA) DELRAY OIL, INC. 03844 DOWDY, MRS. A. E. -A- DARST CREEK (BUDA) GARRISON LTD. 02738 DOWELL, LULING UNIT #6 SALT FLAT CASTILLO OIL COMPANY LLC 03032 DOWNES, L.E. TAYLOR-INA OILEX INT'L INVESTMENTS, INC. 07293 DOWNIE SOMERSET SEAGULL OPERATING CO., INC. 11234 DOWNING, DOUGLAS V. BEAR CREEK DOWNING, MARK 00031 DRAKE-BORCHERS UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17245 DRESCH SOMERSET SEEKER OIL COMPANY, INCORPORATED 12209 DRESCH, EDWARD SOMERSET PAISANO PRODUCTION, INC. 11272 DREYER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15930 DREYFUS, JACK J. WILDCAT SHWJ OIL & GAS CO., INC. 12331 DRIGGS, J. P. CAMPANA, SOUTH TRIUM, LTD. 00178 DRIGGS, J. P. CAMPANA, SOUTH (CHERNOSKY) TRIUM, LTD. 02573 DRISCOLE, B.W. BEAR CREEK FIVE STAR OPERATING COMPANY 11491 DROUGHT, ANN G. PENA CREEK (SAN MIGUEL 3RD) CUATRO PETRO CORP. 04324 DRYDEN, E. J. CHICON LAKE RLU OPERATING, LLC 00300 DUAL ZONE PILOSA (GLEN ROSE) TX ENERGY SERVICES, LLC 16216 DUBE ET AL V. DESHAZO (ANACACHO) WOODHAM OIL CORPORATION 09890 DUBOIS, BOYCE L. PEMBERTON (NAVARRO) VICEROY PETROLEUM, LP 04574 DUBOSE EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15406 DUBOSE PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12800 DUBOSE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16627 DUBOSE UNIT NO. 2 EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16967 DUBOSE UNIT NO.1 EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16929 DUBOSE-DAUCHY FENTRESS (1750) BOB-KAT OIL CO. 11355 DUBOSE, BLAXTON CHRISTIAN (6800) FORD, DON H. & ASSOC. 13124 DUBOSE, GEORGIA, ET AL DUBOSE (EDWARDS -A-) SONITT PETROLEUM CORP. 03150 DUBOSE, J. M. PEACH CREEK (AUSTIN CHALK) DIAMOND M DRLG & EXPL CO. 06707 DUCHO UNIT PEACH CREEK (AUSTIN CHALK) FORD, DON H. & ASSOC. 07774 DUGT, BEN CINDY ANN (BUDA) CIBOLO ENERGY OPERATING, INC. 10434 DUKE TENNEY CREEK CASTILLO OIL COMPANY LLC 11542 DUKE BOYS 3 SALT FLAT, WEST BLACKMAR, JIM OIL OPERATOR 11736 DUKE, CHARLES SOMERSET THOMAS EXPLORATION & DEVEL., INC 11094 DUKE, LEON B SALT FLAT, WEST G & D OIL COMPANY 09914 DUKES, L. B. ETAL MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 01231


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ DULLNIG UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16493 DULLNIG UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16458 DULLNIG UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16370 DULLNIG UNIT E DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16310 DULLNIG UNIT F DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16685 DULLNIG UNIT G DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16471 DUNCAN, W.F. SPILLER GINCO OPERATING CO. 06963 DUNKLE PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16234 DUNLAP PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16453 DUNLAP, MRS. N. L., EST. -A- DUNLAP LLT ENERGY, INC. 00523 DUNLAP, N. L., MRS., EST. -B- DUNLAP LLT ENERGY, INC. 02481 DUNLAP, SAM PEARSALL (AUSTIN CHALK) SABINAL RESOURCES, INC. 06604 DUNLAP, SAMUEL C. ET AL PEARSALL (AUSTIN CHALK) GOLDEN CHILD, INC. 05675 DUNLAP, SAMUEL C. III BIG WELLS(SAN MIGUEL, LO., EAST) SABINAL RESOURCES, INC. 04266 DUNN EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16773 DUNN PEARSALL (AUSTIN CHALK) NEWTON CORP.,THE 13540 DUNN, A.M. PEARSALL (AUSTIN CHALK) NEWTON CORP.,THE 12624 DUNN, ANNE DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 15127 DUREN CROWN, E. (NAVARRO) EXXCEL OPERATING COMPANY 10455 DUREN & RICHTER -B- IMOGENE, SOUTHEAST BRYMER CONTRACTING INCORPORATED 00702 DUREN & RICHTER ACT. #1 IMOGENE PEARL, BILL H. PRODUCTIONS, INC. 00673 DUREN & RICHTER ACT. #2 IMOGENE PEARL, BILL H. PRODUCTIONS, INC. 00674 DUREN & RICHTER ACT. #3 IMOGENE PEARL, BILL H. PRODUCTIONS, INC. 00675 DUSEK A.W.P. (OLMOS) XTO ENERGY INC. 09353 DUSEK EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 17153 DVR 'A' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16814 DVR 'B' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15955 DVR 'D' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16416 DYC -A- PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 12371 DYE, C. F. SALT FLAT DST OIL COMPANY 01495 DYESS PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16233 DYESS, DALE LA VERNIA DOEGE, DONALD 08610 DYLLA, GARY COOKSEY MILLER, W. C. OPERATING COMPANY 12408 DYMKE MINERVA-ROCKDALE RTO OPERATING, LLC 01198 DYMKE, RONALD P., ETAL MINERVA-ROCKDALE PRICE OPERATING, LLC 02337 DZIUK MARCELINA CREEK (AUSTIN CHALK) ARGENT ENERGY (US) HOLDINGS INC. 16251 DZIUK B EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 17271 DZIUK C EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 17270 DZUIK, CHARLES MARCELINA CREEK (AUSTIN CHALK) SARITA ENERGY RESOURCES, LTD. 08231 E J HARDEMAN 1H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14465 E S I # 3 - KNAPEK THRALL BLACK JACK SERVICES, L.L.C. 14464 E. E. SMITH UNIT 1 FIRST SHOT (AUSTIN CHALK) CIMAREX ENERGY CO. OF COLORADO 12959 E. E. SMITH UNIT 2 FIRST SHOT (AUSTIN CHALK) CIMAREX ENERGY CO. OF COLORADO 13083 E. FLORESVILLE /POTH SAND/ UNIT FLORESVILLE, EAST A & C OIL COMPANY, LLC 03392 E.E. SMITH UNIT 3 FIRST SHOT (AUSTIN CHALK) MODERN EXPLORATION, INC. 13152 E-F 1893 UNIT DOERING RANCH (GEORGETOWN) VIRTEX OPERATING COMPANY, INC. 16309 EALAND PEARSALL (AUSTIN CHALK) DRISCOLL S.W.D. INC. 10034 EARDLEY PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 14079 EARNEST, W. A. PEARSALL (AUSTIN CHALK) CIBOLO ENERGY OPERATING, INC. 05073 EARWOOD JEANIE (SERPENTINE) ATLAS OPERATING LLC 08089 EASH, RICHARD L. SOMERSET U. D. MAN, INC. 07664


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ EAST CENTRAL DEV. TRACT ONE LA VERNIA DOEGE, DONALD 07566 EAST CROWN, EAST /NAVARRO/ UNIT CROWN, E. (NAVARRO) HUNTERS CREEK OIL & GAS 03395 EAST ELROY UNIT ELROY, EAST ELECTRAGAS, INC. 04137 EAST PENA CREEK UNIT PENA CREEK (OLMOS 2350) ENERGYQUEST II, LLC 14089 EAST PENA CREEK UNIT PENA CREEK (SAN MIGUEL 3RD) ENERGYQUEST II, LLC 04317 EASTWOOD-JOHNSON MILBUR (NAVARRO) DASH PRODUCTION COMPANY, INC. 07183 EASTWOOD, E. -A- SOMERSET PETROSAURUS, INC. 02246 EASTWOOD, E. -B- SOMERSET PETROSAURUS, INC. 02011 EASTWOOD, E. T. SOMERSET CALAME, RICHARD 03927 EBROM MARCELINA CREEK (AUSTIN CHALK) DOMINION PRODUCTION COMPANY, LLC 15170 ECD UNIT SOMERSET GINCO OPERATING CO. 10835 ECD UNIT-B- SOMERSET GINCO OPERATING CO. 11320 ECHTLE, FRANCIS CHICON LAKE K.A. BARNES OIL & GAS OPER, LLC 02442 ECKOLS -C- DARST CREEK (BUDA) OCCIDENTAL ENERGY COMPANY, INC. 02732 ECKOLS, OLEVIA LA VERNIA TEXAS COASTAL RESOURCES LLC 05428 EDGAR LIPPE "A" PLUM CREEK (AUSTIN CHALK) R & S OIL PRODUCTION CO. 16488 EDMUND TOM 01 EAGLEVILLE (EAGLE FORD-1) PIONEER NATURAL RES. USA, INC. 15750 EDMUND TOM 02 EAGLEVILLE (EAGLE FORD-1) PIONEER NATURAL RES. USA, INC. 15751 EDRINGTON HIDDEN VALLEY (SAN MIGUEL) WILLIAMSON OPERATING CO. 05724 EDSEL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17077 EDWARD, J.W. -A- SOMERSET GREAT PLAINS RESOURCES, INC. 10793 EDWARDS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16141 EDWARDS SOMERSET SEAGULL OPERATING CO., INC. 11236 EDWARDS A BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15571 EDWARDS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15442 EDWARDS UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16377 EDWARDS UNIT LA VERNIA, WEST (AUSTIN CHALK) G & K OPERATING, LLC 13912 EDWARDS UNIT SALT FLAT E. T. OIL COMPANY 06347 EGGER, MARVIN JORDAN (NAVARRO B) BETRO, INC. 05651 EICHMAN, F. F. KAYE (NAVARRO) JOHANSON OIL 02219 EISSLER GUADALUPE BEND (AUSTIN CHALK) CHIODO CORP. 13734 EKLUND SALT FLAT GREAT PLAINS RESOURCES, INC. 03568 EKLUND -C- SALT FLAT LULING O&G LLC 10009 EKLUND -K- SALT FLAT LULING O&G LLC 09454 EKLUND, CARL SALT FLAT GREAT PLAINS RESOURCES, INC. 03824 EKLUND, CARL SALT FLAT LULING O&G LLC 06754 EKLUND, CARL -A- SALT FLAT H & W ENERGY 06272 EKLUND, CARL -D- SALT FLAT LULING O&G LLC 06549 EKLUND, CARL -E- SALT FLAT LULING O&G LLC 06734 EKLUND, CARL -H- SALT FLAT LULING O&G LLC 07844 EKLUND, CARL C. SALT FLAT LULING O&G LLC 07868 EKLUND, CARL JR SALT FLAT COMANCHE WELL SERVICE CORP. 09969 EKLUND, CARL JR. SALT FLAT OSYKA OIL & GAS, INC. 11700 EKLUND, CARL, -A- SALT FLAT GREAT PLAINS RESOURCES, INC. 03880 EKLUND, CARL, JR. SALT FLAT GREAT PLAINS RESOURCES, INC. 02978 EKLUND, KATHEEN -C- SALT FLAT H & W ENERGY 06321 EKLUND, KATHLEEN -B- SALT FLAT BRUSHY CREEK OIL CO. 06296 EL CID -A- PEARSALL (AUSTIN CHALK) SOUTH OIL, INC. 05394 EL CID -C- PEARSALL (AUSTIN CHALK) SOUTH OIL, INC. 13804 EL REGALO BUCKHORN BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 15998 EL VIEJO GOTEBO KID (VOLCANICS) PROPERTY DEVELOPMENT GROUP, INC. 14038


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ ELAINE (5100) UNIT ELAINE (5100) WHITE MARLIN OPERATING CO, LLC 07143 ELAINE FIELD /SAN MIGUEL/ UNIT ELAINE (SAN MIGUEL) WHITE MARLIN OPERATING CO, LLC 03356 ELAND UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16382 ELDRIDGE UNIT PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 12641 ELIJAH MARCELINA CREEK (BUDA) G & K OPERATING, LLC 12131 ELIOTT, R.E. A.W.P. (OLMOS) XTO ENERGY INC. 07650 ELIZONDO-DUNCAN UNIT FAIRFIELD CRYSTAL RESOURCES, INC 02349 ELIZONDO, LUCIUS LA VERNIA LEASE & WELL SERVICE, INC. 02673 ELKINS, A. NIXON CRYSTAL RESOURCES, INC 12207 ELKINS, ALEX ACLETO CREEK (POTH A) P.S.N. PETROLEUM, INC. 09758 ELKINS, JESSE ACLETO CREEK (POTH A) TEXOKAN OPERATING, INC. 06908 ELKINS, JESSE ACLETO CREEK (POTH B) TEXOKAN OPERATING, INC. 06838 ELKINS, JESSE ACLETO CREEK (POTH C) TEXOKAN OPERATING, INC. 06909 ELKINS, JESSE -B- ACLETO CREEK (POTH B) TEXOKAN OPERATING, INC. 07516 ELKINS, JESSE -B- ACLETO CREEK (POTH C) TEXOKAN OPERATING, INC. 07314 ELKINS, JESSE -C- ACLETO CREEK (POTH A) TEXOKAN OPERATING, INC. 08253 ELLEDGE EL INDIO, N.(OLMOS) WOLF, DARYL OIL 11057 ELLIOTT, B. SOMERSET BRANDER, SAM H. 11596 ELLIS PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 14224 ELLIS, H.G. EL VIEJO (SERPENTINE) ROYAL TEXAS PETROLEUM 06081 ELLISON LULING-BRANYON LULING O&G LLC 01129 ELLISON SALT FLAT GREAT PLAINS RESOURCES, INC. 08552 ELLISON LONE STAR LULING-BRANYON TX LONE STAR OPERATING CO, LLC 15145 ELLISON, A. KAYE (NAVARRO) COPPERHEAD OIL & GAS, LTD. 02111 ELLISON, ALBERT KAYE (POTH) COPPERHEAD OIL & GAS, LTD. 02501 ELLISON, ROGER TENNEY CREEK SAUR, JERRY 08478 ELLISON, W. LULING-BRANYON BAIR'S LEASE SERVICE, INC. 09405 ELLISON, W. M. LULING-BRANYON COPPERHEAD OIL & GAS, LTD. 01046 ELLISON, WALTER LULING-BRANYON AUSTIN OPERATING, LLC. 06254 ELLISON, WALTER LULING-BRANYON GARRISON LTD. 06255 ELLISON, WALTER -B- LULING-BRANYON OCCIDENTAL ENERGY COMPANY, INC. 06853 ELLISON, WALTER -D- LULING-BRANYON GINCO OPERATING CO. 02318 ELVIRA PILGRIM (AUSTIN CHALK) K & L OIL, LLC 13423 EMERSON BUCHANAN FOYORO ENERGY, LLC 12343 EMLEY, WILLIAM E. CHICON LAKE MORE TEXAS OIL 06147 EMMA TARTT EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 16032 EMOGENE UNIT PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 13359 ENCINA-COLEMAN PEARSALL (AUSTIN CHALK) CLARON CORPORATION 12864 ENGELKE, ALVIN SPILLER TEXSTAR OIL & GAS, LLC 01674 ENGELKE, AUGUST SPILLER RUJO 02568 ENGELKE, AUGUST SPILLER WHITFIELD, W. C. JR. TRUST 03708 ENGELKE, OTTO SPILLER EAGLE FORD OIL CO., INC. 03511 ENGELKE, VERNON SPILLER GINCO OPERATING CO. 03362 ENGELKE, VERNON SPILLER TEXSTAR OIL & GAS, LLC 01675 ENGLE, W.D. COOKSEY RICKAWAY ENERGY, CORP. 09820 ENGLISH-SPARKS UNIT SOMERSET GREAT PLAINS RESOURCES, INC. 10786 ENGLISH, D.E. ET AL PEARSALL (AUSTIN CHALK) BRAZOS PETROLEUM, INC. 05116 EPPRIGHT, J. T. CHARLOTTE (EDWARDS LIME) J.P. OIL COMPANY, INC. 03267 EPPRIGHT, M. W. LYTTON SPRINGS ROYAL TEXAS PETROLEUM 03473 EPPRIGHT, M. W., -B- LYTTON SPRINGS EAGLE FORD OIL CO., INC. 03726 EPPRIGHT, M. W., -C- LYTTON SPRINGS EAGLE FORD OIL CO., INC. 03732


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ EPSTEIN-BALBOA -A- FAIRFIELD CALK, ROGER D. 09492 EPSTEIN, JEROME FAIRFIELD GREAT PLAINS RESOURCES, INC. 06580 EPSTEIN, SADIE SALT FLAT KIDD PRODUCTION CO. 02857 EPSTEIN, SADIE ETAL UNIT SALT FLAT KIDD PRODUCTION CO. 03135 ERNST SOMERSET SEAGULL OPERATING CO., INC. 11233 ERNST -A- SOMERSET SEAGULL OPERATING CO., INC. 11239 ERNST -D- SOMERSET SEAGULL OPERATING CO., INC. 11248 ERNST -E- SOMERSET SEAGULL OPERATING CO., INC. 11249 ERNST -F- SOMERSET SEAGULL OPERATING CO., INC. 11251 ERNST -G- SOMERSET SEAGULL OPERATING CO., INC. 11250 ERNST LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16501 ERNST UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16604 ERNST UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16496 ERNST UNIT D LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16228 ERNST, GEORGE SOMERSET LANDOR OIL CO. 03111 ERNST, HERBERT SOMERSET FIVE STAR OPERATING COMPANY 10991 ERNST, HERBERT -C- SOMERSET GREAT PLAINS RESOURCES, INC. 10992 ERNST, HERBERT L. SOMERSET ERNST ENTERPRISES 11075 ERNST, KATIE L. SOMERSET PETROSAURUS, INC. 03113 ERTZNER, FRED LA VERNIA SEACO PRODUCTION 11544 ERVIN, ET AL PEACH CREEK (BUDA) DOMINION PRODUCTION COMPANY, LLC 15119 ESCHENBURG MARCELINA CREEK (AUSTIN CHALK) LUCAS ENERGY, INC. 16271 ESCHENBURG MARCELINA CREEK (BUDA) AERIE ENERGY 14852 ESCHENBURG MARCELINA CREEK (BUDA) LUCAS ENERGY, INC. 14233 ESCHENBURG, ET AL UNIT MARCELINA CREEK (AUSTIN CHALK) AERIE ENERGY 13569 ESCHENBURG, R.L. II ET. AL. MARCELINA CREEK (AUSTIN CHALK) LUCAS ENERGY, INC. 09175 ESCONDIDO BRISCOE RANCH (EAGLEFORD) BUFFCO PRODUCTION INC. 16959 ESI #1 - KNAPEK THRALL BLACK JACK SERVICES, L.L.C. 14455 ESPADA UNIT MONKSFIELD (350 SAND) ROOT DRILLING COMPANY 11740 ESPANTOSA LAKE UNIT PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14818 ESPANTOSA LAKE UNIT G DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16890 ESSE EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16491 ESSE-SMITH RANCH UNIT B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15670 ESSE-SMITH UNIT A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15650 ESTRADA, ELGARIO M. SOMERSET GREAT PLAINS RESOURCES, INC. 10993 ET EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16135 ETHRIDGE -A- LULING-BRANYON EAGLE FORD OIL CO., INC. 01037 ETHRIDGE -B- LULING-BRANYON EAGLE FORD OIL CO., INC. 04469 EUBANK, BLANCH -B- BLANCH (OLMOS) HAMILTON, J. R. 02577 EUERS, MELVIN BATEMAN (AUSTIN CHALK) MEB, LLC 10014 EUSTACE HINDES UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16008 EUSTACE TOWNSEND UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15781 EVA COE CHRISTINE, SE. (WILCOX) NEWGULF PETROLEUM, LLC 14963 EVANS, GEO. N. -B- SOMERSET TEXAS SECONDARY OIL CORPORATION 10896 EVANS, HENRIETTA FAIRFIELD HASLETT, TERRY E. 10682 EVANS, JOHN A. DARST CREEK (BUDA) DJ EXPLORATION, INC. 08367 EVANS, JOHN A. DARST CREEK (EDWARDS) DJ EXPLORATION, INC. 08623 EVANS, WORTH WORTH EVANS (GLEN ROSE) H I S OIL CO. 09832 EVANS,LESTER J. & LETTIE B. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06427 EVELYN PEARSALL (AUSTIN CHALK) ARESCO OPERATING LLC 04989 EVELYN WHEELER EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16345


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ EVERGREEN PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15318 EWALD/HURT UNIT PEARSALL (AUSTIN CHALK) DISCOVERY PETROLEUM, L.L.C. 12391 EWING, ROBERT PALMER (POTH-B) J&J OIL 06161 EXELCO EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15588 EXXON CHARLOTTE (AUSTIN CHALK) WEN-BE 13928 EZZELL, F.M. ETAL PALMER (POTH-B) ORIGIN PRODUCTION COMPANY, INC. 05084 EZZELL, ROSE DRAGOON CREEK (GOVT. WELLS, UP.) WOOD, C.W. 03626 F CRAIN EAGLEVILLE (EAGLE FORD-1) CINCO NATURAL RESOURCES CORP. 15449 F.N.B.T. "A" BIG WELLS (SAN MIGUEL) TRADITION RESOURCES OPER, LLC 05746 F.N.B.T. NORTH BIG WELLS (SAN MIGUEL) TRADITION RESOURCES OPER, LLC 04764 F&M ENGINEERING, INC LA VERNIA KUBENA, JOSEPH A. 06097 FAIR JOURDANTON VIRTEX OPERATING COMPANY, INC. 17147 FAIRCHILD, J.M. DUNLAP LULING O&G LLC 06200 FAIRWAY PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 05890 FAITH BONITA C UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15887 FAITH BONITA D UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15769 FAITH BONITA G UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15987 FAITH BONITA H UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15981 FAITH SAN PEDRO J UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16617 FAITH SAN PEDRO P UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16899 FAITH SAN PEDRO T UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16900 FAITH SAN PEDRO X UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16646 FAITH SANDY DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15626 FAITH TORO A UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16253 FAITH TORO DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16242 FAITH TORO DIM B UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16260 FAITH TORO DIM K UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16760 FAITH TORO J UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16778 FAITH-BONITA BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15584 FAITH-BONITA F UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16043 FAITH-SAN PEDRO BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15317 FAITH-SAN PEDRO A UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15675 FAITH-SAN PEDRO C UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15632 FAITH-SAN PEDRO D UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15767 FAITH-SAN PEDRO E UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16528 FAITH-SAN PEDRO F UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16619 FAITH-SAN PEDRO H UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16503 FAITH-SAN PEDRO I UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16527 FAITH-YANA BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15564 FAITH-YANA A UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15794 FAITH-YANA B UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15633 FAITH-YANA D UNIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15658 FAJITA UNIT SOMERSET PAISANO PRODUCTION, INC. 10767 FAKTOR EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16514 FALKNER-JUERGEN ET UX. MILANO, EAST (BUDA) ERNEST OPERATING COMPANY 05755 FALLOW UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15896 FALOR LA VERNIA J-ENERGY 15448 FALOR, ALLEN LA VERNIA FALOR, ALLEN C. 06463 FALOR, HIRAM LA VERNIA THREE J ENERGY, INC. 00828 FANCHER FAIRFIELD CALK, ROGER D. 08799 FANSLER, LORRAINE TRI BAR (OLMOS) VIRTEX OPERATING COMPANY, INC. 16981


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ FANSLER, LORRAINE TRI BAR, NORTH (OLMOS) VIRTEX OPERATING COMPANY, INC. 10394 FARIAS SACATOSA (SAN MIGUEL #1 SAND) CMR ENERGY, L.P. 14320 FARIAS SWD BLAKEWAY (OLMOS A) US LIQUIDS OF LA., L.P. 15944 FARNIK EAGLEVILLE (EAGLE FORD-1) TUG HILL OPERATING, LLC 15892 FARRAN SOMERSET GREAT PLAINS RESOURCES, INC. 11548 FARRAN SOMERSET PAISANO PRODUCTION, INC. 10759 FARRAN SOMERSET U. D. MAN, INC. 10779 FARRAN SOMERSET UNDERBRINK OIL 10865 FARRAN, W. W. ANCHORAGE ESSEX & ARMSTRONG 00013 FARRAR-CAMPION PEACH CREEK (AUSTIN CHALK) DIAMOND M DRLG & EXPL CO. 15083 FARRELL, V. A. CHARLOTTE (NAVARRO) WEN-BE 03284 FASELER, ROBERT A. ET UX ADAMS (BUDA) ACTIVA RESOURCES, LLC 05552 FAUST DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16044 FEDC-LINCOLN SASPAMCO P.S.N. PETROLEUM, INC. 13527 FEDERAL ROYALTY CO., ETAL -A- SOMERSET PETROSAURUS, INC. 02084 FEDERAL ROYALTY CO., ETAL -B- SOMERSET PETROSAURUS, INC. 01614 FEE MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 14092 FEE MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 01199 FEE -A- PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 04946 FEHNER, ODIS MAG (BUDA) BELLOWS OPERATING CO., L. C. 07594 FELPS BRISCOE RANCH (EAGLEFORD) STRAND ENERGY, L.C. 15441 FELPS COMANCHE-HALSELL (6500) RIO-TEX, INC. 15121 FELPS "A" BRISCOE RANCH (EAGLEFORD) STRAND ENERGY, L.C. 16943 FELUX EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 15802 FELUX, JOE JR. POTH, EAST (AUSTIN CHALK) CHISHOLM OIL & GAS, LC 07175 FERGUSON PEARSALL (AUSTIN CHALK) FERGUSON OIL & GAS INC. 04749 FERGUSON PEARSALL (BUDA, S.) BLACKBRUSH O & G, LLC 16567 FERGUSON-MCKNIGHT BRISCOE RANCH (EAGLEFORD) NEWFIELD EXPLORATION COMPANY 15263 FERGUSON-MCKNIGHT PEARSALL (AUSTIN CHALK) NEWFIELD EXPLORATION COMPANY 14905 FERGUSON-MCKNIGHT ROCKY CREEK (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 15065 FERGUSON, R. E. CHARLOTTE (NAVARRO) 3-L DRILLING 03313 FERNANDEZ, RICARDO TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06726 FERRELL SOMERSET R W RANCH 10751 FERRY, SARAH E. PLEASANTON (CARRIZO SAND) GUINN OPERATING COMPANY 01374 FERRY, SARAH E. PLEASANTON (CARRIZO SAND) GUINN OPERATING COMPANY, LLC 01377 FERRY, SARAH E. -B- PLEASANTON (CARRIZO SAND) GUINN OPERATING COMPANY 01375 FERRY, SARAH E. UNIT PLEASANTON (EDWARDS LIME 8100) TANDEM ENERGY CORPORATION 13961 FEUGE, ORSON -A- HASSE (BUDA) STEINDORF, BERT OIL & GAS CO. 13485 FF CHEAPSIDE SWD EAGLEVILLE (EAGLE FORD-1) WHITEWATER RESOURCES LLC 16352 FF DILLEY SWD PEARSALL (AUSTIN CHALK) GREENHUNTER WATER, LLC 16249 FIEDLER FIEDLER BROTHERS MILLENNIUM PETRO-PHYSICS, INC. 14985 FIEDLER BROTHERS FIEDLER BROTHERS TRACKER OIL & GAS, INC. 09390 FIEDLER BROTHERS LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16393 FIEDLER BROTHERS UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16203 FIEDLER UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16535 FIELDER DALE-MCBRIDE FOYORO ENERGY, LLC 13603 FIELDER, A. H. LULING-BRANYON AUSTIN OPERATING, LLC. 03724 FIELDER, W. M., ETAL LULING-BRANYON TURNER, GLEN 01044 FIELDER,A.H. LULING-BRANYON GREAT PLAINS RESOURCES, INC. 08661 FIELDS, F. L. -C- LULING-BRANYON FIELD OPERATING COMPANY, INC. 03259 FIELDS, F.L. ETAL "B" LULING-BRANYON FIELD OPERATING COMPANY, INC. 03714


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ FIELDS, FRANCES -A- DUNLAP FINALY RESOURCES LLC 12080 FIELDS, FRANCIS L., ETAL "A" LULING-BRANYON E & W OIL, INC. 03682 FIELDS, J. T. LULING-BRANYON LULING O&G LLC 01065 FIELDS, J. T. -A- LULING-BRANYON LULING O&G LLC 03678 FIELDS, J.T. - BERRY LULING-BRANYON ALLIED OPERATING TEXAS, LLC 08480 FIELDS, J.T. "S.W." LULING-BRANYON ALLIED OPERATING TEXAS, LLC 14109 FIELDS, J.T.-BERRY -A- LULING-BRANYON ALLIED OPERATING TEXAS, LLC 16811 FINCH-BIRD UNIT NIXON JIMCO ENERGY INC. 11976 FINCH, BEULAH ET AL PRUITT, S.E. (ESCONDIDO) 3-L DRILLING 11881 FINCH, BEULAH, ETAL PRUITT, SE. (OLMOS) 3-L DRILLING 01420 FINCH, C. E. PRUITT, SE. (OLMOS) JENEX PETROLEUM CORPORATION 01905 FINCH, S. P. GALBA (CARRIZO) WSM 00621 FINCH, W.& C SOMERSET KOKO ENTERPRISES 10918 FINCK, O.H. SOMERSET GREAT PLAINS RESOURCES, INC. 10995 FINK PILGRIM (AUSTIN CHALK) CADDO ENERGY CO., INC. 13424 FINK, WM. FAIRFIELD QUINTANILLA, TONY C. 02536 FIRST LOCKHART NATIONAL BANK LULING-BRANYON E-P OIL CO. INC. 00988 FIRST LOCKHART NATIONAL BANK -A- LULING-BRANYON E-P OIL CO. INC. 05885 FIRST LOCKHART NATIONAL BANK -B- LULING-BRANYON E-P OIL CO. INC. 09290 FIRST LOCKHART NATIONAL BANK -C- LULING-BRANYON E-P OIL CO. INC. 09291 FIRST STATE BANK OF LOCKHART LULING-BRANYON E-P OIL CO. INC. 06230 FIRST STATE BANK OF LOCKHART LULING-BRANYON J & W OIL COMPANY 00989 FISCHER BUCHANAN FOYORO ENERGY, LLC 13352 FISCHER, M. F. DALE-MCBRIDE FOYORO ENERGY, LLC 06383 FISHER, GEO. N. AND MARIE MINERVA-ROCKDALE CHMELAR, EUGENE OIL & GAS 10227 FISHER, GROVER JAYEDDIE, SOUTH LULING O&G LLC 09058 FISHER, J. E. MINERVA-ROCKDALE PRICE OPERATING, LLC 02679 FISK, H.L. SOMERSET CIBOLO PRODUCTION, LLC 11289 FITZPATRICK WIPFF (GEORGETOWN) JANCO OPERATING 11884 FITZSIMMONS "A" HUGH FITZSIMONS (OLMOS) PRIME OPERATING COMPANY 14178 FITZSIMMONS 25 HUGH FITZSIMMONS (SAN MIGUEL) PRIME OPERATING COMPANY 14341 FITZSIMMONS, HUGH "A" HUGH FITZSIMMONS (SAN MIGUEL) PRIME OPERATING COMPANY 14145 FIVE F EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16072 FIVE MILE UNIT FIVE MILE (WILCOX, UPPER) JET BLACK OIL, INC. 14313 FLAT CREEK DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16565 FLAT CREEK UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15982 FLAT CREEK UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16168 FLAT CREEK UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16327 FLAT CREEK UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16334 FLAT CREEK UNIT E DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16195 FLAT CREEK UNIT G DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16561 FLAT CREEK UNIT I DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16487 FLEEMAN NICKS LAND & CATTLE CO. KAYE (NAVARRO) JOHANSON OIL 09660 FLEMING, E. J. ETAL SALT FLAT GAUGE OIL COMPANY 01450 FLEMING, L. DARST CREEK (BUDA) AMERICAN CASCADE ENERGY, INC. 08074 FLEMING, L. DARST CREEK (EDWARDS) GREAT PLAINS RESOURCES, INC. 09571 FLETCHER UNIT SALT FLAT CASTILLO OIL COMPANY LLC 02983 FLICK UNIT A EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 17214 FLIELLER, CLIFTON CINDY ANN (AUSTIN CHALK, OIL) NORDSTRAND ENGINEERING, INC. 07652 FLORA WEBB UNIT JOURDANTON (RECKLAW) WSM 06796 FLORES EAGLEVILLE (EAGLE FORD-1) RILEY EXPLORATION, LLC 15505


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ FLORES UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL COMPANY 15775 FLORES, GEORGE P. FAIRFIELD GREAT PLAINS RESOURCES, INC. 09723 FLORES, JUAN KAYE (NAVARRO) WOLFE OIL COMPANY 01903 FLOWER PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16956 FLOYD EAGLEVILLE (EAGLE FORD-1) TRI-FORCE EXPLORATION, L.L.C. 16038 FLOYD PEACH CREEK (AUSTIN CHALK) BARNETT ENERGY, INC. 08482 FLOYD PEACH CREEK (AUSTIN CHALK) CHALLENGER OIL INC 06856 FLOYD TILLER SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 15430 FLOYD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17062 FLYING G PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15019 FOERSTER, A. W. KAYE (NAVARRO) DEAGEN, BILL & SONS, LTD. 00778 FOERSTER, A. W. KAYE (NAVARRO) GEOMEG ENERGY OPERATING CO., LLC 04472 FOERSTER, A. W., /FEE/ KAYE (NAVARRO) SOURCE PETROLEUM INC. 01857 FOERSTER, PAUL DAVIS (EDWARDS 7481) JENEX PETROLEUM CORPORATION 09281 FOERSTER, PAUL KAYE (NAVARRO) LT OIL LLC 03946 FOGLE, J.H. SALT FLAT LULING WELL SERVICE 08022 FOHN, E. L. -A- TAYLOR-INA CVS PRODUCTION, LLC. 01725 FOHN, EDWARD UNIT II TAYLOR-INA CVS PRODUCTION, LLC. 06432 FOLEY MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15746 FOLEY, NORMENT LEONA (ELAINE) WELDON CORPORATION 06379 FORD BUCHANAN BEDFORD OIL & GAS, INC. 13692 FORD MOTOR CO. UNIT SALT FLAT OFFSPRING WELL SALVAGE 03073 FORD, DON H. SALT FLAT B. J. P. OPERATING 03686 FORD, GLADYS E. KAYE (NAVARRO) GONZALES, M. G. 01869 FOREST OAK SOMERSET PETROSAURUS, INC. 05994 FORISTER/ KING LOST MULE (AUSTIN CHALK) HAWKEYE OIL & GAS CORPORATION 12651 FORREST OAKS SOMERSET KIMBERJAY OIL & GAS COMPANY 11789 FORREST OAKS -A- SOMERSET SEEKER OIL COMPANY II, INC. 11414 FORREST OAKS -B- SOMERSET PETROSAURUS, INC. 11554 FORREST OAKS -D- SOMERSET PETROSAURUS, INC. 11712 FORREST WHEELER EAGLEVILLE (EAGLE FORD-1) BHP BILLITON PET(TXLA OP) CO 17163 FORREST WHEELER EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15520 FORREST WHEELER 'A' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16678 FORREST WHEELER 'B' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 17204 FORREST WHEELER 'C' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16832 FORREST WHEELER 'D' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 17218 FORREST WHEELER 'E' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 17205 FORSHAGE, ERWIN DARST CREEK (BUDA) GARRISON LTD. 02721 FORTIER, A. J. SOMERSET BAR M PETROLEUM CO. 07908 FORTNER, HATTIE ET AL LA VERNIA DOEGE, DONALD 07328 FOSTER A.W.P. (OLMOS) XTO ENERGY INC. 08262 FOSTER BIG FOOT IMPETRO OPERATING LLC 04385 FOSTER FAIRFIELD K.A. BARNES OIL & GAS OPER, LLC 02046 FOSTER -A- A.W.P. (OLMOS) XTO ENERGY INC. 09521 FOSTER LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17209 FOSTER UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17213 FOSTER UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16873 FOSTER, CURTIS BULLOH (NAVARRO) PAL DRILLING COMPANY 05798 FOSTER, ESTER BULLOH (POTH) CADDO ENERGY CO., INC. 04642 FOSTER, GEORGE SOMERSET D.C. OIL 09821 FOSTER, J. ESTATE SUN T S H (OLMOS) SWIFT ENERGY OPERATING, LLC 14945


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ FOSTER, J.R. FAIRFIELD K.A. BARNES OIL & GAS OPER, LLC 07668 FOUR K PARTNERS EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16262 FOUSHEE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16113 FOUSHEE-HENKE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16134 FOWLER FENTRESS (1750) OFFSPRING WELL SALVAGE 09618 FOWLER SOMERSET B.J.F. PROD. 09195 FOWLER VAS II SOMERSET UNDERBRINK OIL 13670 FOWLER, B. K. SOMERSET PETROSAURUS, INC. 01616 FOWLER, B. K. -B- SOMERSET PETROSAURUS, INC. 01617 FOWLER, B. K., ETAL -C- SOMERSET PETROSAURUS, INC. 01618 FOWLER, B. K., ETAL -D- SOMERSET PETROSAURUS, INC. 01619 FOWLER, F.J. SOMERSET GREAT PLAINS RESOURCES, INC. 10855 FOWLER, FLOYD J. SOMERSET PETROSAURUS, INC. 05716 FOWLER, IMA SOMERSET LANDOR OIL CO. 06118 FOWLER, IMA SOMERSET PETROSAURUS, INC. 10857 FOWLER, IMA -B- SOMERSET GREAT PLAINS RESOURCES, INC. 06459 FOWLER, IMA -C- SOMERSET CALK OIL COMPANY 10764 FOWLER, IMA ET AL SOMERSET GREAT PLAINS RESOURCES, INC. 10807 FOWLER, J. W. SOMERSET ANDERSON, GRACE M. 10829 FOWLER, SAM J. -A- SOMERSET CALK OIL COMPANY 10763 FOWLERTON SWD EAGLEVILLE (EAGLE FORD-1) WHITEWATER RESOURCES LLC 17257 FOX CREEK EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15332 FOX CREEK RANCH "A" EAGLEVILLE (EAGLE FORD-1) UNION GAS OPERATING COMPANY 15413 FOX CREEK UNIT G EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15890 FRAIR, O.L. FAIRFIELD FAR, INC. 06750 FRAMPTON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17279 FRANCIS, S. J. LULING-BRANYON CENTEX OIL & GAS 03068 FRANCISCO UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16820 FRANGER FAIRFIELD FIVE STAR ENERGY OPERATIONS 00585 FRANGER FAIRFIELD GENIE OIL COMPANY "A" 09951 FRANGER "A" FAIRFIELD GENIE OIL COMPANY "A" 09949 FRANGER, HENRY F. FAIRFIELD CRYSTAL RESOURCES, INC 00599 FRANGER, HENRY F. ESTATE FAIRFIELD GENIE OIL COMPANY "A" 06421 FRANK SALT FLAT, WEST BAIR'S LEASE SERVICE, INC. 07830 FRANK, W. O. SALT FLAT BAIR'S LEASE SERVICE, INC. 03097 FRANKLIN A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16161 FRANKLIN B UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16572 FRANKLIN C UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16569 FRANKLIN D UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17110 FRANKLIN UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16707 FRANKS, E.W. LA VERNIA LOTT PRODUCTION COMPANY 08232 FRANKS, G.W. ET AL PEARSALL (AUSTIN CHALK) FRANKS, GEORGE WILLIAM 12520 FRANKS, JULIAN -B- PEARSALL (AUSTIN CHALK) ATLAS ENERGY CORPORATION (DEL.) 05206 FRANKS, W.O -B- SALT FLAT, WEST E. T. OIL COMPANY 08777 FRANKS, W.O. -A- SALT FLAT, WEST E. T. OIL COMPANY 08727 FRAZIER, E. TAYLOR-INA CIVRON PETROLEUM RES., LLC 03040 FRAZIER, HAROLD E. A.W.P. (OLMOS) XTO ENERGY INC. 11705 FRED H. CHANDLER UNIT PAWELEK (AUSTIN CHALK) MARATHON OIL COMPANY 12814 FREEDOM PRODUCTION UNIT MINERVA-ROCKDALE OMNI OIL & GAS, INC. 15198 FREEMAN MAG (AUSTIN CHALK) TDC ENGINEERING, INC. 06117 FREEMAN-FREEMAN UNIT CHRISTIAN (6800) DOMINION PRODUCTION COMPANY, LLC 12998


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ FREEMAN, CHARLES SALT FLAT O.G.O. REFINING 08986 FREEMAN, E. L. WILDCAT BRUNS, H. D., 1970 OIL CO 04423 FRIESENHAHN-BUDNIK SOMERSET UNDERBRINK OIL 13287 FRIESENHAHN, M.J. #1 MONKSFIELD (350 SAND) SOUTH SAM OPERATING COMPANY, LLC 07986 FRIESENHAHN, M.J. #2 MONKSFIELD (350 SAND) SOUTH SAM OPERATING COMPANY, LLC 09230 FRIESENHAHN, NORBERT RINEHART (AUSTIN CHALK) QUEST RESEARCH & DEV. CORP. 01429 FRIESS BROTHERS TURNEY WOLFCO OPERATING COMPANY 07393 FRIO COUNTY SCHOOL LAND PEARSALL (AUSTIN CHALK) DSD-FRIO ENVIRONMENTAL, INC. 16058 FRIO LAND AND CATTLE BRISCOE RANCH (EAGLEFORD) BLACKBRUSH O & G, LLC 15476 FRIO RIVER RANCH EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16868 FRIO SWD PEARSALL (AUSTIN CHALK) AMERICAN DISPOSAL SERVICES,LTD 17224 FRISBIE UNIT EAGLEVILLE (EAGLE FORD-1) GEOSOUTHERN ENERGY CORPORATION 15649 FROST NATIONAL BANK PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 14339 FROST NATIONAL BANK TRUSTEE DENT INGRAM (OLMOS 5) TEXOKAN OPERATING, INC. 12903 FROST NATL BANK, TR. -B- BIG WELLS(SAN MIGUEL, LO., EAST) BOTASCH OPERATING, LLC 04926 FRY LULING-BRANYON FRY, JOHNNY R. 10243 FUCHS "D" THRALL JMR RESOURCES LLC 13510 FUCHS, FRITZ -A- THRALL JMR RESOURCES LLC 01736 FUCHS, FRITZ -B- THRALL JMR RESOURCES LLC 01737 FUCHS, FRITZ -C- THRALL JMR RESOURCES LLC 01738 FULLER SOMERSET PETROLEUM OILFIELD SERVICES INC. 01622 FULLER #1 PEARSALL (AUSTIN CHALK) CENTEX DEVELOPMENT 12966 FULPS, J. M. LULING-BRANYON GEOMEG ENERGY OPERATING CO., LLC 14290 FULPS, J. M. LULING-BRANYON NORTHRIDGE EXPLORATION, INC. 01021 FUNK LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16740 FUNK UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16771 FUSSELL, J.H. CHEROKEE (NAVARRO) RODEL OIL & GAS COMPANY 07879 FUSSELL, J.H. CHEROKEE (NAVARRO) SHELDON RESOURCES, L.P. 09616 FUSSELL, R. R. CHEROKEE (NAVARRO) BETRO, INC. 04083 G&D - WILSON A SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 10469 GABRIEL ROSS LEE (AUSTIN CHALK) UNITED OPERATING, LLC 13370 GABRIEL, J. ROSSER (SERPENTINE) UNITED OPERATING, LLC 13803 GAENZEL EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16725 GAINES, THELKA SOMERSET SOUTHWEST LOOP 1604, LTD. 10898 GALAN PEARSALL (AUSTIN CHALK) PETRO HERN COMPANY 12640 GALAN, ENRIQUE M. PEARSALL (AUSTIN CHALK) CRW PRODUCING CO. 04861 GALINDO, CLEMENTE SOMERSET RAINER ENERGY, INC. 10826 GALINDO, FRED SOMERSET UNDERBRINK OIL 09330 GALINDO, FRED -A- SOMERSET PAISANO PRODUCTION, INC. 13416 GALINDO, FRED/SALAZAR; SELSA R. SOMERSET CALK OIL COMPANY 07999 GALLANT, JAMES A. MANZANAS (ELLENBURGER) BRITANCO, L.L.C. 13973 GALM UNIT A BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15297 GALM UNIT B BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15602 GANDRE CHRISTIAN (6800) LUCAS ENERGY, INC. 12051 GANN FESTERVAN EAGLEVILLE (EAGLE FORD-1) VALENCE OPERATING COMPANY 16632 GARCIA KENS (SERPENTINE) R & S OIL PRODUCTION CO. 08451 GARCIA PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 13000 GARCIA SOMERSET FIVE STAR OPERATING COMPANY 10996 GARCIA -B- KENS (SERPENTINE) R & S OIL PRODUCTION CO. 08800 GARCIA UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17175 GARCIA UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16230


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ GARCIA UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16386 GARCIA UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16191 GARCIA, A. C. SOMERSET PETROSAURUS, INC. 01623 GARCIA, JAMES DARST CREEK (BUDA) R & S OIL PRODUCTION CO. 06006 GARCIA, JAMES V. KENS (SERPENTINE) OFFSPRING WELL SALVAGE 13841 GARCIA, JAMES V. KENS (SERPENTINE) R & S OIL PRODUCTION CO. 10279 GARCIA, SANTOS SOMERSET UNDERBRINK OIL 10844 GARDENDALE A UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16285 GARDENDALE B UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16287 GARDENDALE C UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16457 GARDENDALE D UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16530 GARDENDALE E UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16459 GARDENDALE F UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16533 GARDENDALE G UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16547 GARDIEN EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16298 GARDIEN, KENT JR. DUBOSE, NE. (EDWARDS -A-) BC OPERATING, INC. 04291 GARDNER, E.S. CARRIZO, W. (2700 OLMOS) TORNADO ENERGY 08631 GARDNER, ET AL EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15497 GARNER MT. EDEN (CARRIZO-WILCOX, UP.) BASTROP ENERGY GROUP 14081 GARNER & SMITH MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 01241 GARNER, E. G. TENNEY CREEK FORTUNE OPERATING COMPANY 07721 GARNER, JOHN N. PEARSALL (AUSTIN CHALK) OMNI OPERATING COMPANY(A) 05374 GARRISON PILGRIM (AUSTIN CHALK) G & K OPERATING, LLC 13438 GARWOOD, R. P. LULING-BRANYON EAGLE FORD OIL CO., INC. 03633 GARWOOD, ROBERT P. LULING-BRANYON TEN-KEY INC. 08792 GARY PENA CREEK (GEORGETOWN) PATTERSON ENERGY CORPORATION 14797 GARY, M.E. EL INDIO, N.(OLMOS) MAVERICK OSAGE OIL COMPANY, INC. 11653 GARZA CARLOTA (GEORGETOWN) BIG SHELL OIL & GAS, INC. 17013 GARZA (R) FAIRFIELD DRACHEN OIL COMPANY 14479 GARZA RANCH A UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16329 GARZA RANCH B UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16824 GARZA UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16549 GARZA-KODACK UNIT NO. 1 EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16969 GARZA, RAYMOND SOMERSET GINCO OPERATING CO. 10766 GASTRING, R. E. ECKERT PAISANO PRODUCTION, INC. 02456 GATES SOMERSET K.A. BARNES OIL & GAS OPER, LLC 14030 GATES "O" TR2 CATARINA, SW. (OLMOS) LEWIS PETRO PROPERTIES, INC. 14824 GATES RANCH CATARINA, SW. (OLMOS) LEWIS PETRO PROPERTIES, INC. 14359 GATES RANCH GATES CATARINA LEWIS PETRO PROPERTIES, INC. 04647 GATES RANCH -A- CATARINA, SW (SAN MIGUEL,OIL) LEWIS PETRO PROPERTIES, INC. 07354 GATES RANCH "B" CATARINA, SW. (OLMOS-2) PETROPOINT ENERGY OPERATING, LLC 14338 GATES RANCH "W" CATARINA, SW. (OLMOS-2) PETROPOINT ENERGY OPERATING, LLC 14329 GATES, BONNIE PEARSALL (AUSTIN CHALK) GATES OPERATING COMPANY 12675 GATES, J. L. CHARLOTTE (NAVARRO) AVIGHNA ENERGY INC 03316 GATHINGS/HAECKER LA VERNIA HAECKER, JOSEPH 07195 GATLIN PILGRIM (BUDA) LUCAS ENERGY, INC. 12597 GAWLIK EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16170 GAWLIK EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15821 GAWLIK B EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16296 GAYLE OMEGA "1985" SOMERSET GREAT PLAINS RESOURCES, INC. 11448 GAYLE, SUSIE KNIGHT SOMERSET GREAT PLAINS RESOURCES, INC. 09223


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ GEARY WATTS LAS EAGLEVILLE (EAGLE FORD-1) STONEGATE PRODUCTION COMPANY,LLC 15757 GEARY, A. F. LULING-BRANYON GINCO OPERATING CO. 03953 GEARY, A. F., -A- LULING-BRANYON GINCO OPERATING CO. 01127 GEBERT-MUMME UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16818 GENTRY A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 14884 GEORG EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 15526 GEORG UNIT 3 FIRST SHOT (AUSTIN CHALK) MODERN EXPLORATION, INC. 14175 GEORG UNIT 4 FIRST SHOT (AUSTIN CHALK) MODERN EXPLORATION, INC. 14255 GEORGE LONG B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16177 GEORGE UNIT FIRST SHOT (AUSTIN CHALK) MODERN EXPLORATION, INC. 14179 GEORGE UNIT 1 FIRST SHOT (AUSTIN CHALK) MODERN EXPLORATION, INC. 13177 GEORGE, BURTON O. BIG WELLS (SAN MIGUEL) 1776 ENERGY OPERATORS, LLC 14400 GEORGE, BURTON O. JR. PEARSALL (AUSTIN CHALK) 1776 ENERGY OPERATORS, LLC 12835 GEORGE, ELIZABETH ET AL BLACK ROCK (SAN MIGUEL) BROWN, JOHN OIL CO. 08176 GERACI J.Y.F. (BUDA) BODDEN PRODUCTION 07861 GERACI MARCELINA CREEK (AUSTIN CHALK) BODDEN PRODUCTION 13045 GERACI II J.Y.F. (BUDA) BODDEN PRODUCTION 12016 GERDES, G.H. -A- SALT FLAT, WEST EAGLE FORD OIL CO., INC. 06986 GERDES, GARWOOD MINERVA-ROCKDALE TEJAS EXPLORATION INC. 07142 GERHARDT, HAIDEE SOMERSET PETROSAURUS, INC. 03365 GERKE UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16718 GERKE UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16713 GERLICH-TAYLOR LA VERNIA SMITH/A.P.H. VENTURE 08479 GERLICH, JOE LA VERNIA TEXAS BISON PETROLEUM 05067 GERTH, R. -A- LA VERNIA RAMPAGE EXPLORATION, INC. 07784 GERTH, RENO LA VERNIA RAMPAGE EXPLORATION, INC. 06884 GESCHEIDLE, ELVIN PEACH CREEK (BUDA) DOMINION PRODUCTION COMPANY, LLC 15210 GESICK-DOERFLER JAYEDDIE CROSSROADS MINERAL PROD., L.L.C. 13705 GEY, JOYCE NIXON, EAST (6100) ORIGIN PROD CO GONZALES PROP LLC 04864 GEYER SOMERSET GREAT PLAINS RESOURCES, INC. 10769 GEYER -A- SOMERSET PETROLEUM OILFIELD SERVICES INC. 11189 GEYER -B- SOMERSET PETROLEUM OILFIELD SERVICES INC. 11190 GEYER -C- SOMERSET GREAT PLAINS RESOURCES, INC. 11118 GEYER -D- SOMERSET CIBOLO PRODUCTION, LLC 11000 GEYER/LEHMBERG SOMERSET BAYSHORE OPERATING COMPANY 11121 GEYER/LEHMBERG -B- SOMERSET BAYSHORE OPERATING COMPANY 11123 GEYER, FRANK CHARLOTTE, NORTH BLUE QUAIL OIL CO. 04677 GEYER, FRANK A. CHARLOTTE, NORTH WEN-BE 07750 GIBSON DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16343 GIBSON SOUTH DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16219 GIBSON UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16684 GIDEON, T. C. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01066 GIDLEY PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12787 GIERISCH UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16602 GIESE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15848 GIESE-HENKE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15913 GIL PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15714 GILBERT FAIRFIELD OMNI OIL & GAS, INC. 11623 GILBERT MARSHA SKYTOP OIL & GAS 07134 GILBERT NORTH UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16886 GILBERT-LUNA A UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 17228


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ GILBERT-LUNA B UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 17261 GILL TRUST UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16665 GILLETT SWD FIRST SHOT (AUSTIN CHALK) PYOTE WELL SERVICE, LLC 16756 GILLIAM GINNY JOHNSON (NAVARRO A) SELLERS LEASE SERVICE, INC. 11579 GILLILAND SOMERSET GLOBAL TRAINING ACADEMY, INC. 10734 GILLILAND I PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 13245 GILLILAND II PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 13315 GINN-FOSTER LYTTON SPRINGS ROYAL TEXAS PETROLEUM 11711 GISE, LAWRENCE PEARSALL (AUSTIN CHALK) NAVAJO EXPLORATION, INC. 12765 GLASS EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 17027 GLASS B BRISCOE RANCH (EAGLEFORD) NEWFIELD EXPLORATION COMPANY 15301 GLASS RANCH A CAGE RANCH (EAGLEFORD) NEWFIELD EXPLORATION COMPANY 15053 GLASS, J. DUNLAP G & D PETROLEUM CO. 08076 GLASS, WILLIAM B. PEACH CREEK (AUSTIN CHALK) TIDELANDS PRODUCTION, INC. 12458 GLASSCOCK DOS ARROYOS (SAN MIGUEL) RETAMA OIL CORPORATION 05455 GLASSCOCK RANCH EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 16383 GLASSCOCK, LETA LETA (OLMOS) MATADOR PRODUCTION COMPANY 09289 GLASSCOCK, LETA LETA (SAN MIGUEL) MATADOR PRODUCTION COMPANY 09912 GLASSCOCK, LETA PEARSALL (AUSTIN CHALK) MATADOR PRODUCTION COMPANY 09813 GLASSCOCK, V.J. ET AL DEVILS RIVER (PALUXY) PETRO IMPERIAL CORP. 02545 GLAZNER, EDGAR R. PEARSALL (AUSTIN CHALK) MID-WESTERN OPERATING COMPANY 11947 GLAZNER, EDGAR R. PEARSALL (AUSTIN CHALK) MID-WESTERN OPERATING COMPANY 12401 GLEN LUMPKINS MIDWAY (2300 OIL) SELLERS LEASE SERVICE, INC. 17149 GLENDALE SCHOOL LULING-BRANYON EAGLE FORD OIL CO., INC. 01017 GLENDALE SCHOOL LULING-BRANYON E & P OIL & GAS COMPANY 03823 GLENEWINKLE UNIT CINDY ANN (AUSTIN CHALK, OIL) NORDSTRAND ENGINEERING, INC. 13925 GLORIA WHEELER 'C' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16664 GLORIA WHEELER 'D' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16668 GLORIA WHEELER 'E' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16670 GLORIA WHEELER "A" EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15671 GLORIA WHEELER "B" EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15647 GLORIANA POTH -A- UNIT GLORIANA (POTH -A-) FORT WORTH NATURAL GAS, INC. 03992 GLOVER SALT FLAT, WEST E. T. OIL COMPANY 06634 GLOVER -A- SALT FLAT, WEST E. T. OIL COMPANY 07101 GLOVER UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15529 GLOVER-RAYES A UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15527 GLOVER-RAYES B UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15925 GLOVER-SADLER SOMERSET SEEKER OIL COMPANY, INCORPORATED 11263 GLOVER, VANCE SALT FLAT, WEST E. T. OIL COMPANY 06633 GOBBLER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16257 GODDEN, AMZI TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 05515 GODDEN, C.C. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06769 GOFORTH SWD PEARSALL (AUSTIN CHALK) SELECT ENERGY SERVICES, LLC 12424 GOLDEN EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 16084 GOLDEN MCKEAN 1H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14685 GOLDEN-MCKEAN LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01084 GOLDENEYE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17009 GOMEZ SOMERSET SEAGULL OPERATING CO., INC. 10881 GOMEZ -A- SOMERSET SEAGULL OPERATING CO., INC. 10887 GOMILLION LYTTON SPRINGS GAUGE OIL COMPANY 01164 GOMILLION ESTATE LYTTON SPRINGS D-III PETROLEUM, INC. 11472


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ GOMILLION, F. A. LYTTON SPRINGS DARST CREEK OIL COMPANY 01159 GOMILLION, F. A. LYTTON SPRINGS GAUGE OIL COMPANY 01161 GOMILLION, F. A., 60 AC. LYTTON SPRINGS CHEATHAM, JOE R. OIL CO. 01148 GONZALES A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 15042 GONZALES EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15814 GONZALES PEARSALL (AUSTIN CHALK) WILSON, DON H., INC. 14384 GONZALES ET AL UNIT PEARSALL (AUSTIN CHALK) PROGENIES OPERATING LLC 14535 GONZALES SWD EAGLEVILLE (EAGLE FORD-1) HIGH SIERRA WATER-EAGLE FORD,LLC 15615 GONZALES, RUDY H. DARST CREEK (BUDA) AUSTIN OPERATING, LLC. 08803 GONZALES, SANTIAGO SOMERSET GREAT PLAINS RESOURCES, INC. 11051 GONZALES, SANTIAGO -C- SOMERSET GREAT PLAINS RESOURCES, INC. 11052 GONZALES, SANTIAGO ET UX, ET AL SOMERSET GREAT PLAINS RESOURCES, INC. 07246 GONZALEZ "A" PEARSALL (AUSTIN CHALK) CRIMSON ENERGY PTNRS III, L.L.C. 14536 GONZALEZ UNIT A DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15689 GONZO WILDCAT GULF COAST ACQUISITIONS CO. L.C. 14880 GONZO HUNTER EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15700 GONZO NORTH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15322 GONZO SOUTH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16995 GONZO UNIT A EAGLEVILLE (EAGLE FORD-1) TEXAS INTERNATIONAL OPER., LLC 17283 GONZO UNIT B EAGLEVILLE (EAGLE FORD-1) TEXAS INTERNATIONAL OPER., LLC 17294 GOOD PEARSALL (AUSTIN CHALK) L & J EXPLORATION, LLC 12413 GOOD PEARSALL (AUSTIN CHALK) PRO FIELD SERVICES, INC. 10614 GOOD -A- PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 07580 GOODE-BIRD KAYE (NAVARRO) EMBREY OIL PRODUCTION CO. 10636 GOODE, ADDIE BELL PEACH CREEK (EDWARDS) OSBORN HEIRS COMPANY 16223 GOODWIN BRISCOE RANCH (EAGLEFORD) SANCHEZ OIL & GAS CORPORATION 16056 GOODWIN EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16476 GOODWIN, N. L. LEMING (2934 SAND) WSM 09542 GOODWYN, A.B. SOMERSET CALK OPERATING CO. 01653 GORDEN KAYE (NAVARRO) CALTEX ENERGY CO. 02390 GORDEN "P-5" SOMERSET EMERALD BAY ENERGY, INC. 11177 GORDEN S. -A- SOMERSET AMINEX USA, INC. 11001 GORDON TRUST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15893 GORDON, L. KAYE (NAVARRO) CALTEX ENERGY CO. 01891 GORGON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17000 GORZELL CINDY ANN (AUSTIN CHALK, OIL) BODDEN PRODUCTION 10493 GORZELL, BEN KATHLEEN ANN (REEF) UNDERBRINK OIL 11558 GOSSETT ADAMS (BUDA) BLACK CREEK OIL COMPANY, LLC 05197 GOSSETT-SHANNON PLEASANTON, E. (ESCONDIDO) RICKAWAY ENERGY, CORP. 14694 GOSSETT, JO LE PLEASANTON, SE. (EDWARDS) WILEY LEASE CO., LTD. 12259 GOTT, SAM FAIRFIELD CALK, ROGER D. 08247 GOUGER PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 12390 GPC GEMINI BRISCOE RANCH (EAGLEFORD) GOODRICH PETROLEUM COMPANY 16992 GPC PAN AM BRISCOE RANCH (EAGLEFORD) GOODRICH PETROLEUM COMPANY 15362 GPC PEDRO MORALES UNIT BRISCOE RANCH (EAGLEFORD) GOODRICH PETROLEUM COMPANY 15651 GRABENER - PAYNE UNIT MILBUR (NAVARRO) MUTUAL OIL OF AMERICA, INC. 04351 GRAEF, STEPHEN B. WILDCAT GRAEF, STEPHEN B. 09186 GRAHAM PILGRIM (AUSTIN CHALK) FOREST OIL CORPORATION 15653 GRAHAM PILGRIM (BUDA) FOREST OIL CORPORATION 15665 GRAHAM-ASHLEY UNIT MILANO (GEORGETOWN) EXPLORATION TECHNIQUES INC. 09256 GRAHAM-DEBAULT UNIT CHEROKEE (EAGLE FORD) EXPLORATION TECHNIQUES INC. 15220


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ GRAHAM-ELKINS SALT FLAT TEN-KEY INC. 08788 GRAHAM, A.N. CHEROKEE (NAVARRO) MICRO OPERATING, INC. 04675 GRAHAM, A.N. -B- CHEROKEE (NAVARRO) MICRO OPERATING, INC. 04812 GRAHAM, J. J. UNIT SALT FLAT KIDD PRODUCTION CO. 03087 GRAN TORINO A EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16708 GRANBERG VERNA (ANACACHO) SEEKER OIL COMPANY, INCORPORATED 03000 GRANBERG, KARL -A- GOLDEN LAB (ANACACHO) SEEKER OIL COMPANY, INCORPORATED 12166 GRAND SLAM UNIT PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 13843 GRANDBERRY UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16939 GRASS FARM UNIT BRISCOE RANCH (EAGLEFORD) ABRAXAS PETROLEUM CORPORATION 15752 GRAY UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16739 GRAY UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16700 GRAY, CLARA UNIT -1- TAYLOR-INA PRODUCTION RESOURCES, INC. 04731 GRAY, FLOY SALT FLAT PROEX ENERGY MANAGEMENT, L.L.C. 01522 GRAY, FLOY -A- SALT FLAT B. J. P. OPERATING 01496 GRAY, FLOY -C- SALT FLAT B-3 OIL CO. 01480 GRAY, FLOYD SALT FLAT J. H. W. INC. 05297 GRAY, G.C. -A- DARST CREEK (EDWARDS) NJP OIL & GAS LLC 07934 GRAY, JOHN F. SOMERSET RAINER ENERGY, INC. 11201 GRAYBURG-MCKEAN LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01073 GRAYBURG-MERRIWEATHER LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01074 GREEN SWAIM EAGLEVILLE (EAGLE FORD-1) TALISMAN ENERGY USA INC. 15764 GREEN, NOBLE J. CHICON LAKE E & N PRODUCTION COMPANY 10061 GREEN, NOBLE J. I CHICON LAKE K.A. BARNES OIL & GAS OPER, LLC 08252 GREENE UNIT WEINERT (BUDA) EOG RESOURCES, INC. 17223 GREENWOOD, JAMES SPILLER DELRAY OIL, INC. 01672 GREINER, FRED P. DUNLAP GEOMEG ENERGY OPERATING CO., LLC 03841 GREINER, R. A. MILL CREEK LULING O&G LLC 10363 GRELLE, BRIAN LA PRYOR (SAN MIGUEL) CIVRON PETROLEUM RES., LLC 14918 GREY REEF UNIT NO. 1 WILDCAT ANADARKO E&P ONSHORE LLC 14331 GRIFFIN FIRST SHOT (AUSTIN CHALK) LUCAS ENERGY, INC. 13618 GRIFFIN OIL UNIT PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 13001 GRIFFIN-CHAPEL AME CHURCH MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 01180 GRIFFIN-DEATLEY UNIT A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15690 GRIFFIN-DEATLEY UNIT B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15606 GRIFFIN-RUDDOCK OIL UNIT PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 13480 GRIFFIN, G. G. ET AL PILGRIM (AUSTIN CHALK) ORIGIN PROD CO GONZALES PROP LLC 13420 GRIFFITH SOMERSET GREAT PLAINS RESOURCES, INC. 11007 GRIFFITH -B- SOMERSET GREAT PLAINS RESOURCES, INC. 11152 GRIFFITH, B.J. SOMERSET GREAT PLAINS RESOURCES, INC. 07480 GRINGITA DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16908 GRINGITA UNIT II DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16916 GRISSOM PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16955 GROCE, J. G. ET AL PENA CREEK (SAN MIGUEL 3RD) CUATRO PETRO CORP. 04323 GROSS, J. C. MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 01273 GROSS, JOSEPH CHICON LAKE K.A. BARNES OIL & GAS OPER, LLC 02224 GROSSIE PEARSALL (AUSTIN CHALK) U.S. ENERCORP, LTD. 16208 GROTHUES -A, ALBERT&H REV LIV TR FAIRFIELD GROTHUES,ALBERT&H REV LIV TR,THE 06188 GROTHUES,ALBERT&H REV LIV TR,THE FAIRFIELD GROTHUES,ALBERT&H REV LIV TR,THE 02660 GRUBBS & HOLLOWAY FAIRFIELD RLU OPERATING, LLC 04742 GRUBBS, W.E. ET AL LA VERNIA SEACO PRODUCTION 00831


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ GRUN, W. J. GLENN POTH (POTH SAND) METCO OIL CORPORATION 14143 GSH UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15642 GUADALUPE CO. TURMAN DARST CREEK (BUDA) ALDIS OIL 02819 GUADALUPE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15916 GUAJARDO, AGUSTINE FAIRFIELD GREAT PLAINS RESOURCES, INC. 06694 GUAJILLO WILDCAT BLACKBIRD OIL & GAS, LLC. 16211 GUBBELS SAN MIGUEL CREEK (AUSTIN CHALK) ENERQUEST OPERATING L.L.C. 15059 GUBBELS SAN MIGUEL CREEK (WILCOX CONS.) ENERQUEST OPERATING L.L.C. 14669 GUENTHER SOMERSET SEAGULL OPERATING CO., INC. 10880 GUENTHER -A- SOMERSET SEAGULL OPERATING CO., INC. 10888 GUERRA, SOLOMON SOMERSET SOUTHWEST LOOP 1604, LTD. 10872 GUINN, H.B. LULING-BRANYON GUINN OIL COMPANY 09719 GULLEY, CALVIN PEARSALL (AUSTIN CHALK) CIVRON PETROLEUM RES., LLC 15126 GULLEY, T. R. PEARSALL (AUSTIN CHALK) PONTIAC OIL, INC. 12713 GUNN MIDWAY (2300 OIL) THREE FORKS OPERATING CO, LLC 14377 GUTIEREZ, J. I. FENTRESS (1750) LAHOMA PROPERTIES, INC. 14023 GUTIERREZ, FELIPE SOMERSET PETROSAURUS, INC. 07438 GUTIERREZ, INEZ SOMERSET PETROSAURUS, INC. 06473 GUTIERREZ, INEZ -B- SOMERSET PETROSAURUS, INC. 09806 GUTIERREZ, ROBERT MARTIN HEIRS (ESCONDIDO) VIRTEX OPERATING COMPANY, INC. 10393 GUTIERREZ, ROBERT TRI BAR (OLMOS) VIRTEX OPERATING COMPANY, INC. 16980 GUTIERREZ, ROBERT TRI BAR, NORTH (OLMOS) VIRTEX OPERATING COMPANY, INC. 10418 GUTTMAN EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16400 GUTTMAN 'B' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17295 GW-SCULL, A. GLENN POTH (POTH SAND) METCO OIL CORPORATION 14119 GWE - WILMETH PEARSALL (AUSTIN CHALK) SEDCO RESOURCES INC 13301 H & O PEARSALL (NAVARRO SAND) JENEX PETROLEUM CORPORATION 13954 H & P PARTNERS ACLETO CREEK (POTH A) H & P PARTNERSHIP 14114 H WILSON UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16801 H WILSON UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16783 H. D. STOREY UNIT STOREY (3940) VIRTEX OPERATING COMPANY, INC. 14034 H. E. STUMBERG, JR. BRISCOE RANCH (EAGLEFORD) CHOYA OPERATING, LLC 17072 H. MOCZYGEMBA A EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16855 H. WILLIE 2-H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14978 H.A. GRAY, ET AL UNIT BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 16098 H.E. UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16182 H.F.S. EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15293 H.O.P.E #I NIXON, EAST (6100) LUCAS ENERGY, INC. 06300 H&F PROPERTIES -C- ALLIGATOR SLOUGH (ELAINE) LIVE OAK GAS COMPANY 06997 H&F PROPERTIES -CB- UNIT ALLIGATOR SLOUGH (ELAINE) MCDAY ENERGY CORP. 07626 H&F PROPERTIES -E- ALLIGATOR SLOUGH (ELAINE) DIVERSIFIED O&G PROD. CO., INC. 06152 H&F PROPERTIES "CC" ALLIGATOR SLOUGH (ELAINE) MCDAY ENERGY CORP. 08472 H&F PROPERTIES "CE" UNIT ALLIGATOR SLOUGH (BRACERO) OFFSPRING WELL SALVAGE 12578 H&F PROPERTIES "E-I" ALLIGATOR SLOUGH (ELAINE) MCDAY ENERGY CORP. 13988 H&F PROPERTIES "E-II" ALLIGATOR SLOUGH (ELAINE) BP PROD. CORP. 13989 H&F PROPERTIES "EB" UNIT ALLIGATOR SLOUGH (ELAINE) MCDAY ENERGY CORP. 06428 H&F PROPERTIES 38-37 BRACERO, NE. (2ND OLMOS) MCDAY ENERGY CORP. 12801 H-OIL COMPANY LULING-BRANYON OFFSPRING WELL SALVAGE 04506 HAAS, JEAN TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 04802 HAASS, JEANNE C. TAYLOR-INA TAMPKE SERVICE CO. 05518 HAASS, PAUL F. JR. "A" DUNLAP CHESSHER, OTTO DRILLING COMPANY 03797


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HAASS, PAUL F. JR. "B" DUNLAP CHESSHER, OTTO DRILLING COMPANY 03825 HAASS, R. R. TAYLOR-INA NEV-TEX OIL & GAS, INC. 02168 HABERMACHER, CHARLES A. KAYE (NAVARRO) SAN MIGUEL EXPLORATION COMPANY 10546 HABY PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16153 HABY-MANGOLD CHICON LAKE GENIE OIL COMPANY 10327 HABY, ERIC -A- TAYLOR-INA SWEETFIELD INVESTMENTS, INC. 08963 HACKBERRY UNIT SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 07943 HAECKER, JACK LA VERNIA HAECKER, JOSEPH 09369 HAEGELIN, ALBERT A. TAYLOR-INA WIGINGTON, ROBERT & SONS 12144 HAESE EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15467 HAGEN EF EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15296 HAGEN RANCH PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 13832 HAGEN RANCH UNIT PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 12996 HAGGARD -BRS- FAIRFIELD HAGGARD OPERATING GROUP/OIL 11444 HAGGARD -JRJ- FAIRFIELD HAGGARD OPERATING GROUP/OIL 11323 HAGGARD -TPA- FAIRFIELD HAGGARD OPERATING GROUP/OIL 11438 HAGGARD RANCH FAIRFIELD HAGGARD OPERATING GROUP/OIL 09968 HAGGARD-HARBO "1985" FAIRFIELD HAGGARD OPERATING GROUP/OIL 11403 HAGIST RANCH LOMA ALTA (WILCOX) BRITANCO, L.L.C. 15818 HAGIST RANCH LOMA ALTA (WILCOX F) CANNAN, MORRIS 04147 HAGIST RANCH, INC. SAN JOSE DOWNING, PATRICK H. 02393 HAIRRELL, GLADYS TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 05830 HAIRRELL, GLADYS -C- TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 05946 HALBARDIER UNIT ECKERT BRIGHT HAWK OPERATING COMPANY 15130 HALE FENTRESS (1750) HIGHER STANDARD OIL COMPANY,INC. 15202 HALE, BILLY FIGHT & HOLLER (SAN MIGUEL) CIVRON PETROLEUM RES., LLC 14559 HALE, CLARENCE FAIRFIELD OMNI OIL & GAS, INC. 07571 HALEY, C.R. PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 12421 HALEY, MARY FIRST SHOT (AUSTIN CHALK) BES, ENVIRONMENTAL SERVICES,INC. 13198 HALFF & OPPENHEIMER PEARSALL (BUDA LIME) JENEX PETROLEUM CORPORATION 14165 HALFF & OPPENHEIMER PEARSALL (NAVARRO SAND) JENEX PETROLEUM CORPORATION 01364 HALFF & OPPENHEIMER -C- PEARSALL (AUSTIN CHALK) JENEX PETROLEUM CORPORATION 04586 HALL, DILLON SALT FLAT LULING O&G LLC 09367 HALL, DILLON SALT FLAT RAFTER-J OIL COMPANY, INC. 08947 HALL, LEE A. CHICON LAKE WILSON L. S. 05207 HALL, RAY W. MATTHEWS BLACK JACK SERVICES, L.L.C. 01175 HALM, BONNYE H. PEARSALL (AUSTIN CHALK) PONTIAC OIL, INC. 07704 HALSELL SACATOSA (SAN MIGUEL #1 SAND) CMR ENERGY, L.P. 14412 HALSELL SACATOSA (SAN MIGUEL #1 SAND) SEAGULL OPERATING CO., INC. 02655 HALSELL (40) SACATOSA (SAN MIGUEL #1 SAND) CMR ENERGY, L.P. 06553 HALSELL LIBERTY SACATOSA (SAN MIGUEL #1 SAND) CMR ENERGY, L.P. 06960 HALSELL MAJOR SACATOSA (SAN MIGUEL #1 SAND) CMR ENERGY, L.P. 06490 HALSELL RANCH -99- SACATOSA (SAN MIGUEL #1 SAND) CMR ENERGY, L.P. 14374 HALSELL-UNION SACATOSA (SAN MIGUEL #1 SAND) CMR ENERGY, L.P. 03943 HAMBY LEMING (2934 SAND) REPUBLIC RESOURCES, LLC. 10396 HAMBY -A- LEMING (2934 SAND) REPUBLIC RESOURCES, LLC. 10411 HAMBY -B- LEMING (2934 SAND) REPUBLIC RESOURCES, LLC. 13038 HAMBY -C- LEMING (2934 SAND) REPUBLIC RESOURCES, LLC. 10487 HAMBY -D- LEMING (2934 SAND) REPUBLIC RESOURCES, LLC. 10684 HAMILTON EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15568 HAMILTON MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 01202


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HAMILTON -B- HUGH FITZSIMMONS (SAN MIGUEL) HAMILTON OIL INC. 06881 HAMILTON "4C" HUGH FITZSIMMONS (SAN MIGUEL) HAMILTON OIL INC. 13708 HAMILTON FEE HUGH FITZSIMMONS (SAN MIGUEL) HAMILTON, J. R. 03742 HAMILTON RANCH HUGH FITZSIMMONS (SAN MIGUEL) SEAGULL OPERATING CO., INC. 13709 HAMILTON RANCH -50- PEARSALL (AUSTIN CHALK) HAMILTON, J. R. 12767 HAMILTON RANCH "A" HUGH FITZSIMMONS (SAN MIGUEL) SEAGULL OPERATING CO., INC. 06882 HAMILTON 1C HUGH FITZSIMMONS (SAN MIGUEL) HAMILTON OIL INC. 13710 HAMILTON 3C HUGH FITZSIMMONS (SAN MIGUEL) HAMILTON OIL INC. 13711 HAMILTON, GRACE SALT FLAT LEFT BEHIND RECOVERY, LLC 15734 HAMILTON, J. R. PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 12764 HAMMAN SALT FLAT, WEST DJ EXPLORATION, INC. 06824 HAMMERHEAD DUNLAP PATEL OIL GROUP LLC 15052 HAMMOND, ADA E. -B- HAMMOND (SAN MIGUEL NO 4) CARIBBEAN ENERGY, L.L.C. 04165 HANING DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15959 HANING UNIT A BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16849 HANING UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16898 HANSEN AC UNIT FIRST SHOT (AUSTIN CHALK) EOG RESOURCES, INC. 16022 HANSEN KULLIN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15402 HANSEN, ANTON WINTER GARDEN (OLMOS) SPUR OPERATING CO. 05444 HANSON, J.M. SALT FLAT (EDWARDS) HOLLUB, LAMBERT DRILLING COMPANY 13982 HANSON, R.B. SOMERSET GREAT PLAINS RESOURCES, INC. 10930 HAPP, JOHN FAIRFIELD HODGE, C. ENERGY INC. 08297 HARBER-BILLIE MIDWAY (2300 OIL) PETRO DELTA 12047 HARBER, V.F. A.W.P. (OLMOS) WAPITI OPERATING, LLC 12363 HARDEMAN LULING-BRANYON SAUR, JERRY 06739 HARDEMAN-TURNER UNIT DUNLAP BLACKMAR, JIM OIL OPERATOR 06612 HARDEMAN, E. J. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01077 HARDEMAN, E. J., EST. LULING-BRANYON GREAT PLAINS RESOURCES, INC. 03031 HARDEMAN, J. W. LULING-BRANYON STONEGATE OPERATORS, INC. 07983 HARDEMAN, L.A. DUNLAP BLACKMAR, JIM OIL OPERATOR 06357 HARDER, E.L. ET AL ACEITUNA (HARPER SD.) HUGHES RESOURCES, INC. 10471 HARDIN UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 15828 HARDIN-RAYES UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15533 HARDIN-SLAUGHTER UNIT SCOTTY (BARTOSH SAND) RICKAWAY ENERGY, CORP. 01939 HARDIN, A. T. SCOTTY (BARTOSH SAND) RICKAWAY ENERGY, CORP. 01568 HARDIN, A. T. STOCKDALE, W. (CHALK, UPPER) CROSSROADS MINERAL PROD., L.L.C. 03816 HARDIN, ETHEL STOCKDALE, W. (CHALK, UPPER) BRITANCO, L.L.C. 03875 HARDIN, T.Y. ESTATE LITTLE MAX (POTH SAND) DULA PRODUCTION, LLC 05728 HARDING UNIT NIXON AMPAK OIL COMPANY 14053 HARDY PEARSALL (AUSTIN CHALK) STP PRODUCTION, LLC 12375 HARDY GUS -D- SALT FLAT FINALY RESOURCES LLC 07610 HARDY-THOMPSON UNIT PEARSALL (AUSTIN CHALK) CARRIZO OIL & GAS, INC. 15236 HARDY, B. B. FLORESVILLE, E. (MIDWAY) A & C OIL COMPANY, LLC 04505 HARDY, GUS SALT FLAT LULING O&G LLC 11600 HARDY, GUS -A- SALT FLAT LULING O&G LLC 11601 HARDY, GUS -A- SALT FLAT LUTEX OIL, LTD. 07677 HARDY, GUS -B- SALT FLAT LULING O&G LLC 11602 HARDY, GUS -C- SALT FLAT LULING O&G LLC 08203 HARDY, GUS -D- SALT FLAT KINGWOOD OIL CO; INC 14129 HARDY, GUS -F- SALT FLAT FINALY RESOURCES LLC 05151 HARDY, SILVAN SOMERSET U. D. MAN, INC. 10964


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HARLAN, R. K. PEARSALL (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 16215 HARLE COOKE RANCH (OLMOS) LEWIS PETRO PROPERTIES, INC. 14779 HARPER PEARSALL (AUSTIN CHALK) BOTASCH OPERATING, LLC 15029 HARPER RANCH BRISCOE RANCH (EAGLEFORD) SANCHEZ OIL & GAS CORPORATION 15968 HARPER UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16166 HARPER UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16511 HARPOLE, E. J. HARPOLE (OLMOS) STREIB, G.W. 04575 HARPOLE, E. J. HARPOLE (SAN MIGUEL) STREIB, G.W. 04534 HARRELL, W.M. CHARLOTTE (NAVARRO) EXXCEL OPERATING COMPANY 05164 HARRIS EAGLEVILLE (EAGLE FORD-1) PETROQUEST ENERGY, L.L.C. 15840 HARRIS JOHN DEERING (AUSTIN CHALK) GINCO OPERATING CO. 03988 HARRIS PEARSALL (AUSTIN CHALK) EXPRESS OIL AND GAS 12449 HARRIS PEARSALL (AUSTIN CHALK) RICOCHET ENERGY, INC. 15063 HARRIS PEARSALL (AUSTIN CHALK) VIA OIL COMPANY 13056 HARRIS "D" PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 05985 HARRIS A PEARSALL (AUSTIN CHALK) EXPRESS OIL AND GAS 05017 HARRIS A POOLED UNIT PEARSALL (AUSTIN CHALK) NICHOLS,EDWIN S EXPLORATIONS INC 13079 HARRIS B EAGLEVILLE (EAGLE FORD-1) PETROQUEST ENERGY, L.L.C. 17024 HARRIS OIL UNIT WILDCAT TXCO RESOURCES INC. 14921 HARRIS-G- PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 06861 HARRIS-MEYERS PEARSALL (AUSTIN CHALK) FORTUNE OPERATING COMPANY 13542 HARRIS-MEYERS -A- PEARSALL (AUSTIN CHALK) FORTUNE OPERATING COMPANY 13648 HARRIS, FRED W. UNIT I PEARSALL (AUSTIN CHALK) 1776 ENERGY OPERATORS, LLC 12446 HARRIS, FREDERICK PEARSALL (AUSTIN CHALK) OFFSPRING WELL SALVAGE 13293 HARRIS, GARLAND V. SPILLER DELRAY OIL, INC. 01952 HARRIS, GARLAND V. -A- LULING-BRANYON DELRAY OIL, INC. 03420 HARRIS, HARTFIELD, BROOKS LA VERNIA J-ENERGY 08590 HARRIS, HARTFIELD, BROOKS -C- LA VERNIA J-ENERGY 11456 HARRIS, HARTFIELD, BROOKS -D- LA VERNIA LAKE CHEROKEE PRODUCTION, LLC 11455 HARRIS, HERMAN LULING-BRANYON GREAT PLAINS RESOURCES, INC. 03370 HARRIS, HERMAN -A- LULING-BRANYON TEXAS GULF OIL & GAS INC. 08502 HARRIS, J.W. -A- PEARSALL (AUSTIN CHALK) OFFSPRING WELL SALVAGE 12479 HARRIS, J.W. -C- PEARSALL (AUSTIN CHALK) OFFSPRING WELL SALVAGE 12462 HARRIS, JOHN W. (MEYERS) PEARSALL (AUSTIN CHALK) FORTUNE OPERATING COMPANY 12562 HARRIS, JULIA PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 15241 HARRIS, JULIA -A- PEARSALL (AUSTIN CHALK) GOLDEN CHILD, INC. 12329 HARRIS, MARTIN SOPHIA (WILCOX CONSOL.) HAWTHORN ENERGY PARTNERS, LLC 14424 HARRISON PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 13778 HARRISON SALT FLAT, WEST E. T. OIL COMPANY 06805 HARRISON-DIX DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02931 HARRISON-DIX DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02792 HARRISON, ROY S. SALT FLAT T. A. W. COMPANY 06309 HARROUN & HARROUN FEE FAIRFIELD NU OIL CO., INC. 02431 HART OIL UNIT PEACH CREEK (AUSTIN CHALK) EXPRESS OIL CO. 13061 HART, C. E. SPEARS (REKLAW) BLACKWELL, LOYD B. 02036 HART, HENRY COW CREEK (HOEGEMEYER 6548) HYTECH ENERGY CORPORATION 04667 HARTFIEL WILDCAT MAVERICK ENERGY & DEV. CORP. 14604 HARTFIELD LA VERNIA GREAT PLAINS RESOURCES, INC. 12052 HARTFIELD, F. -D- LA VERNIA J-ENERGY 06209 HARTFIELD, F. ET AL -B- LA VERNIA J-ENERGY 06057 HARTFIELD, FRAZIER LA VERNIA QUEST RESEARCH & DEV. CORP. 02314


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HARTFIELD, FRAZIER -A- LA VERNIA J-ENERGY 00866 HARTFIELD, LOLA LA VERNIA DONOCO OIL COMPANY 00839 HARTFIELD, LOLA LA VERNIA DONOCO OIL COMPANY 02860 HARTFIELD, MILLIE LA VERNIA DONOCO OIL COMPANY 00838 HARTFIELD, MILLIE LA VERNIA DONOCO OIL COMPANY 02672 HARTFIELD, MILLIE LA VERNIA EAGLE FORD OIL CO., INC. 11452 HARTFIELD, MILLIE ESTATE -B- LA VERNIA LA VERNIA OIL 09267 HARTFIELD, NEIMAH LA VERNIA DONOCO OIL COMPANY 02423 HARTMAN, A. LA VERNIA DOEGE, DONALD 06464 HARTMANN EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15731 HARTMANN, ALVIN LA VERNIA DOEGE, DONALD 10109 HARTUNG C.J.P. (REEF) PRESSLY OIL INTEREST, INC. 09366 HARTUNG -A- C.J.P. (REEF) PRESSLY OIL INTEREST, INC. 09977 HARTUNG -A- SOMERSET SEAGULL OPERATING CO., INC. 01651 HARTUNG -D- C.J.P. (REEF) SEAGULL OPERATING CO., INC. 10073 HARTUNG HEIRS SOMERSET MORE TEXAS OIL 10740 HARTUNG HEIRS/PICKENS SOMERSET GREEN STAR 10758 HARTUNG HEIRS/PICKENS -B- SOMERSET GREEN STAR 08728 HASKETT JUDGE MILLS (BRACERO - OIL) VICEROY PETROLEUM, LP 10610 HASLETT, MARTHA LOU CAMP FAIRFIELD HASLETT, TERRY E. 07924 HASSE SUTIL (REEF) TOBIN, MARK T. 11765 HASSE, W. C. BOWMAN (CARRIZO) TRIPLE 3H ENERGY, LLC 00132 HASSE, W. C. -A- BOWMAN (CARRIZO) TRIPLE 3H ENERGY, LLC 02020 HASSE, W. C. -B- BOWMAN (CARRIZO) TRIPLE 3H ENERGY, LLC 02021 HASSELL CHRISTIAN (6800) MCRAE DRILLING, INC. 13298 HASTINGS TENNEY CREEK BARROW, WILLIAM R. INTERESTS 08024 HASTINGS -B- ACLETO CREEK (POTH B) RED B OIL 09649 HASTINGS, DORA GLEN HUMMEL, SW. (POTH B) ORIGIN PROD CO GONZALES PROP LLC 03613 HASTINGS, W. C., JR. GLEN HUMMEL (POTH -B-) DANIELS, JEAN 03541 HATCH DIM BRISCOE RANCH (EAGLEFORD) STONEGATE PRODUCTION COMPANY,LLC 15353 HATCH EAST DIM BRISCOE RANCH (EAGLEFORD) STONEGATE PRODUCTION COMPANY,LLC 15597 HATCH RANCH PEARSALL (AUSTIN CHALK) BHEC CORPORATION 13312 HATCH UNIT A BRISCOE RANCH (EAGLEFORD) STONEGATE PRODUCTION COMPANY,LLC 17168 HATCH, G.W. PEARSALL (AUSTIN CHALK) GULF OIL & REFINING COMPANY 12304 HATCHETT, J. SOMERSET CLARK, G. A., TRUSTEE 10933 HATHAWAY, T C LA VERNIA TEXAS COASTAL RESOURCES LLC 05913 HATHAWAY, T. C. LA VERNIA SOURCE PETROLEUM INC. 00858 HAUG-KIESCHNICK UNIT 33 BRISCOE RANCH (EAGLEFORD) TEXAS AMERICAN RESOURCES COMPANY 15779 HAUG-KRUEGER UNIT NO. 33 BRISCOE RANCH (EAGLEFORD) TEXAS AMERICAN RESOURCES COMPANY 15753 HAUSSER BRISCOE RANCH (EAGLEFORD) SANCHEZ OIL & GAS CORPORATION 17183 HAVERKAMP, KENNETH MINERVA-ROCKDALE COTTONWOOD CREEK ENTERPRISES LLC 01183 HAVERLAH, LUCILLE HASSE (BUDA) K & R OIL INC. 09502 HAWKINS PEARSALL (AUSTIN CHALK) FORTUNE OPERATING COMPANY 12465 HAWKINS -A- PEARSALL (AUSTIN CHALK) OFFSPRING WELL SALVAGE 12848 HAWKINS-MCMULLEN OIL UNIT STOCKDALE, S. (AUSTIN CHALK) BODDEN PRODUCTION 08238 HAWN DICKSON EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15705 HAWN HOLT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15380 HAYDEN, CLINTON LEMING (2934 SAND) GINCO OPERATING CO. 08938 HAYES UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16125 HAYES, G. L. CARRIZO SWIFT ENERGY OPERATING, LLC 15194 HAYES, G. L. EF EAGLEVILLE (EAGLE FORD-1) SWIFT ENERGY OPERATING, LLC 15379


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HAYNES EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15269 HAYNES 'A' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15917 HB UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16255 HBR BRISCOE RANCH (EAGLEFORD) BRC OPERATING COMPANY LLC 15824 HEARD BOWER CENTRAL UNIT EAGLEVILLE (EAGLE FORD-1) AURORA USA DEVELOPMENT, LLC 15822 HEARD BOWER WEST UNIT EAGLEVILLE (EAGLE FORD-1) AURORA USA DEVELOPMENT, LLC 15760 HEARD-BOWER A UNIT EAGLEVILLE (EAGLE FORD-1) AURORA USA DEVELOPMENT, LLC 15783 HEARNE DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16198 HEARNE UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16616 HEBBE COUPLAND, E. (SERPENTINE) BACHMEYER, MARVIN 04652 HEBERER, GUS SOMERSET K.A. BARNES OIL & GAS OPER, LLC 10931 HEFFERNAN A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17001 HEFFERNAN B UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17113 HEICKMAN SOMERSET RAINER ENERGY, INC. 10748 HEICKMAN -A- SOMERSET SEAGULL OPERATING CO., INC. 10840 HEICKMAN, W. M. SOMERSET SEAGULL OPERATING CO., INC. 04079 HEILIGMAN, JIMMIE ET AL BILL RICHARDSON (ESCONDIDO) 3 W INVESTMENTS LLC 10580 HEINEN, D. D. COUGHRAN (AUSTIN CHALK) LPG ENERGY COMPANY 05209 HEINEN, D.D. HOLLOWAY, EAST (BUDA) LPG ENERGY COMPANY 05131 HEINSOHN-KREBS OIL UNIT MARCELINA CREEK (AUSTIN CHALK) RENCO ENTERPRISES 08881 HEIRHOLZER, CLIFFORD HIGGINS (ESCONDIDO) WEN-BE 09177 HEIRHOLZER, J.C. ET AL SUTIL (REEF) MARSHFIELD OIL & GAS, LLC 06269 HEISER PEARSALL (BUDA LIME) BLACKBRUSH O & G, LLC 16968 HEISER UNIT PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 16213 HEISER UNIT PEARSALL (AUSTIN CHALK) SOUTH COAST OIL & GAS CO. 12705 HEITMAN, JOSEPH J. MINERVA-ROCKDALE WIGGINS OIL CO. 07147 HEITZ PEARSALL (BUDA, S.) HUGHES, DAN A. COMPANY, L.P. 16411 HEITZ 303 PEARSALL (BUDA, S.) HUGHES, DAN A. COMPANY, L.P. 16293 HEITZ, B. M. PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 14247 HEITZ, B.M. PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 12350 HELMCAMP KING UNIT A BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 17173 HELMCAMP KING UNIT B BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 17217 HELMCAMP STATE DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16346 HELMCAMP STATE UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16332 HELMCAMP STATE UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16300 HELMCAMP STATE UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16299 HEMME METCALFE FENTRESS (1750) MCMINN OPERATING COMPANY, INC. 15290 HENDERSON PEARSALL (AUSTIN CHALK) CHRISTICO PETROLEUM COMPANY 12915 HENDERSON WEIGANG ACOCK/ANAQUA OPERATING CO., LP 01768 HENDERSON - STATE CAMPANA, SOUTH CAMCO SALTWATER TRANSPORT 15058 HENDERSON -A-2- MINERVA-ROCKDALE TAHITI PTRS ENRGY SOLUTIONS CORP 10722 HENDERSON -B- MINERVA-ROCKDALE TAHITI PTRS ENRGY SOLUTIONS CORP 10197 HENDERSON -B- WEIGANG ACOCK/ANAQUA OPERATING CO., LP 14218 HENDERSON -B- (MPM) MINERVA-ROCKDALE TAHITI PTRS ENRGY SOLUTIONS CORP 10163 HENDERSON, JOHN -A- MINERVA-ROCKDALE TAHITI PTRS ENRGY SOLUTIONS CORP 09580 HENDERSON, JOHN ETAL MINERVA-ROCKDALE TAHITI PTRS ENRGY SOLUTIONS CORP 01203 HENDES SOMERSET GREAT PLAINS RESOURCES, INC. 10956 HENDES-KRAUSE SOMERSET U. D. MAN, INC. 11415 HENICKE, O.A. SALT FLAT NEXUS OIL AND GAS 06492 HENKE "A" UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15596 HENKE "B" UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15598


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HENKE-WILHELM UNIT A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15857 HENKE-WILHELM UNIT B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15964 HENKHAUS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15680 HENLEY SOMERSET SEAGULL OPERATING CO., INC. 11220 HENNING UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15789 HENRICHSON BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15535 HENRICHSON UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15583 HENRICHSON UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15961 HENRICHSON UNIT E DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16133 HENRICHSON UNIT F DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16508 HENRICHSON UNIT G DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16633 HENRICHSON UNIT H DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16510 HENRY A.W.P. (OLMOS) ROYKO OIL COMPANY 15109 HENRY A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 15184 HENRY CROWN, E. (NAVARRO) SEAGULL OPERATING CO., INC. 08664 HENRY MINERVA-ROCKDALE CAN'T COMPLAIN OPERATING CO. 01247 HENRY EF EAGLEVILLE (EAGLE FORD-1) SWIFT ENERGY OPERATING, LLC 15929 HENRY SOUTH, EDNA GIBBONS A.W.P. (OLMOS) TREK RESOURCES, INC. 08926 HENRY SOUTH, EDNA GIBBONS A.W.P. (WILCOX) TREK RESOURCES, INC. 14651 HENRY, A.L. A.W.P. (OLMOS) XTO ENERGY INC. 09421 HENRY, D. M. CHARLOTTE (NAVARRO) ROLAND OIL COMPANY 05608 HENRY, D.M. -C- II CROWN, E. (NAVARRO) NINEVEH CORP. 09964 HENRY, E.M. "C" HENRY, NE. (CARRIZO, 3650) ACOCK/ANAQUA OPERATING CO., LP 12935 HENRY, EDNA GIBBONS A.W.P. (WILCOX 6200) TREK RESOURCES, INC. 14733 HENRY, G. W. PATTY HUTT (WILCOX) BAR V ENERGY LLC 07064 HENRY, G. W. -B- PATTY HUTT (WILCOX) EAGLE FORD ENVIRO. SERVICES, LLC 14948 HENRY, GEO PATTY HUTT (WILCOX) BELLOWS OPERATING CO., L. C. 14934 HENRY, J. B. HENRY (CARRIZO B-3) ACOCK/ANAQUA OPERATING CO., LP 02584 HENRY, J. B. -B- CHARLOTTE (NAVARRO) WEN-BE 03289 HENRY, J.B. HENRY (WALES "A" SAND) ACOCK/ANAQUA OPERATING CO., LP 12277 HENRY, VIRGINIA ZEBRA (WALES SAND) MANTI EXPLORATION OPERATING LLC 14834 HENRY, WM. O. CHUPICK (OLMOS -A-) INLAND OCEAN, INC. 14005 HENRY,EDNA GIBBENS A.W.P. (OLMOS) TREK RESOURCES, INC. 10191 HENRY,WILLIAM MINERVA-ROCKDALE OPEN CHOKE EXPLORATION, LLC 09525 HENSON UNIT EAGLEVILLE (EAGLE FORD-1) EF ENERGY, L.L.C. 17048 HERBER, EMMERT CHICON LAKE HERBER, CARL R. 02526 HERBER, EMMERT -A- CHICON LAKE HERBER, CARL R. 01854 HERBST UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16206 HERBST UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16118 HERBST-MAY UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16065 HERMANN HATCH UNIT DIM BRISCOE RANCH (EAGLEFORD) STONEGATE PRODUCTION COMPANY,LLC 16292 HERMES SALT FLAT BARROW, WILLIAM R. INTERESTS 08812 HERNANDEZ -A- SOMERSET PAISANO PRODUCTION, INC. 10843 HERNANDEZ-CIOLETTI PEARSALL (BUDA LIME) BLACKBRUSH O & G, LLC 16428 HERNANDEZ, ELENA SOMERSET STERLING INV. GROUP & ASSC., INC 12188 HERNANDEZ, I.G. SOMERSET GREAT PLAINS RESOURCES, INC. 10863 HERNDON-HENSLEY DIXIE (NAVARRO B) ERNEST OPERATING COMPANY 11882 HERNDON-HENSLEY MIDWAY (2300 OIL) ERNEST OPERATING COMPANY 12237 HERRERA, GREGORIO SAN MIGUEL CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 14690 HERRERA, GREGORIO ET AL SAN MIGUEL CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 14708 HERRERA, MARTIN GALBA (NAVARRO) STARBURST ENERGY, INC. 06325


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HERRING-HOLLOWAY TAYLOR-INA LANDMEN OF TEXAS, INC. 01710 HERRMANN RONNIE (QUEEN CITY SAND) H & H PETROLEUM, LLC 14995 HERRMANN SWD EAGLEVILLE (EAGLE FORD-1) RODELL RESOURCES, LLC 17081 HERWIG PEARSALL (AUSTIN CHALK) KIDD PRODUCTION CO. 07012 HERZER, J.F. -A- WILDCAT DRILLPRO PRODUCTION 12221 HICKEY ADAMS (BUDA) ACTIVA RESOURCES, LLC 15174 HICKEY TAYLOR-INA ACTIVA RESOURCES, LLC 15417 HICKEY, A. STACY (OLMOS -A-) NEUMANN OIL & GAS, LLC 01695 HICKEY, EUGENE LA VERNIA HICKEY, EUGENE 00826 HICKEY, WILLIAM STACY (OLMOS -A-) NEUMANN OIL & GAS, LLC 13897 HICKMAN, W. W. -A- SALT FLAT JAVELINA OIL & GAS CO. 03968 HICKMAN, W. W. -B- SALT FLAT JAVELINA OIL & GAS CO. 01524 HICKS, K.D. ET AL SOMERSET GREAT PLAINS RESOURCES, INC. 10787 HICKS, KENNETH D. ET AL SOMERSET BLACK JACK SERVICES, L.L.C. 10817 HIERHOLZER RETZLOFF UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15621 HIERHOLZER SEEWALD UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15599 HIERHOLZER UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15669 HIERHOLZER 7 BRS BOWMAN (REKLAW) RICKAWAY ENERGY, CORP. 14277 HIERHOLZER 7 GMK BOWMAN (REKLAW) RICKAWAY ENERGY, CORP. 14278 HIERHOLZER-HENKE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15923 HIERHOLZER, ALTON BOWMAN (REKLAW) EUROPEAN-SOUTHWEST CO. 06501 HIERHOLZER, ALTON HIGGINS LEE DRLG & DEVELP 07811 HIERHOLZER, ALTON HIGGINS (ESCONDIDO) WEN-BE 08703 HIERHOLZER, C. H. BOWMAN (CARRIZO) RICKAWAY ENERGY, CORP. 02115 HIERHOLZER, C.H. HIGGINS (ESCONDIDO) WEN-BE 08704 HIERHOLZER, CLIFFORD BOWMAN (REKLAW) SOUTHWEST PRODUCTION MGMT. CO. 01969 HIERHOLZER, CLIFFORD HIGGINS WEN-BE 08393 HIERHOLZER, J.C. HIGGINS RED HORSE PETROLEUM 07406 HIERHOLZER, OTTO -A- HIGGINS WEN-BE 08871 HIGGINS, G. P. & L. KAYE (NAVARRO) EMBREY OIL PRODUCTION CO. 03914 HIGGINS, MRS. C. C. CHARLOTTE (NAVARRO) WEN-BE 03292 HIGGINS, PAT KAYE (NAVARRO) LAKE CHEROKEE PRODUCTION, LLC 02338 HIGGINS, PAT KAYE (NAVARRO) SOURCE PETROLEUM INC. 02339 HIGGINS, PATILLO JR. KAYE (NAVARRO) CASTILLO OIL COMPANY LLC 06224 HIGGINS, PATILLO JR. KAYE (NAVARRO) LAKE CHEROKEE PRODUCTION, LLC 02039 HIGHLAND MINERALS INC. PEARSALL (AUSTIN CHALK) EAGLE FORD OIL CO., INC. 08115 HIGHROLLER KARNES SWD B FIRST SHOT (AUSTIN CHALK) HIGH SIERRA WATER-EAGLE FORD,LLC 17023 HILBIG OIL UNIT NO. 1 LENTZ LOWER COLORADO RIVER AUTHORITY 13771 HILBRICH UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16414 HILBURN, MOLLIE DALE-MCBRIDE FOYORO ENERGY, LLC 04104 HILD LA VERNIA (AUSTIN CHALK) GEOMEG ENERGY OPERATING CO., LLC 13758 HILDEBRAND PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 13559 HILDEBRAND PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12719 HILDEBRAND PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 12480 HILDEBRAND SWD PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 12686 HILDEBRAND SWD #2 PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 10666 HILDEBRAND, IRA PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 07486 HILDERBRAND, R. E. FAIRFIELD STARR OPERATING COMPANY 02186 HILEMAN PEARSALL (AUSTIN CHALK) CENTEX DEVELOPMENT 12444 HILL EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15551 HILL EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17329


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HILL KYOTE IMPETRO OPERATING LLC 11687 HILL PILGRIM (AUSTIN CHALK) PACE OIL AND GAS COMPANY 13431 HILL "A" EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15610 HILL "B" EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15605 HILL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15401 HILL-REED SALT FLAT EAGLE FORD OIL CO., INC. 05729 HILL-REED UNIT #3 SALT FLAT, WEST LULING O&G LLC 15539 HILL, BESSIE EZZELL SCHIEFELBEIN, W. H. 00573 HILL, J.W. FENTRESS (1750) AUSTIN OPERATING, LLC. 09884 HINDES DAVIS (EDWARDS 7481) JENEX PETROLEUM CORPORATION 09572 HINDES UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15662 HINDES, BOB -B- BOB HINDES (2100 SEG. B) BRYMER, JACK CONTR. SERV. 03170 HINDMAN NO. 2 PILGRIM (AUSTIN CHALK) ORIGIN PROD CO GONZALES PROP LLC 14648 HINDS, ADDIE SALT FLAT EAGLE FORD OIL CO., INC. 01526 HINDS, ADDIE SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 16192 HINDS, ADDIE -E- SALT FLAT EAGLE FORD OIL CO., INC. 04492 HINDS, ADDIE ESTATE SALT FLAT GINCO OPERATING CO. 01503 HINDS, ADDIE, ETAL -A- SALT FLAT CASTILLO OIL COMPANY LLC 03705 HINDS, ADDIE, ETAL -B- SALT FLAT IPACT 03706 HINDS, ADDIE, ETAL -C- SALT FLAT CASTILLO OIL COMPANY LLC 03740 HINDS, B.T. SALT FLAT RAFTER-J OIL COMPANY, INC. 07708 HINDS, F. C. SALT FLAT LAST RUN, LLC 03421 HINDS, F.C -A- TENNEY CREEK COMANCHE WELL SERVICE CORP. 04646 HINDS, F.C. SALT FLAT LAST RUN, LLC 09039 HINDS, F.C. -H- TENNEY CREEK CENTEX OIL & GAS 07485 HINDS, FLOYD C. SALT FLAT BODE, E.E. 08837 HINDS, FLOYD C. SALT FLAT LAST RUN, LLC 06961 HINER UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16573 HINER UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16577 HINER UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16523 HINES UNIT PILGRIM (AUSTIN CHALK) ORIGIN PROD CO GONZALES PROP LLC 07013 HINKEL EAGLEVILLE (EAGLE FORD-1) TALISMAN ENERGY USA INC. 15839 HINOJOSA EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16010 HINOJOSA A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16887 HINTON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16984 HINTON, R.S. -A- SOMERSET GREAT PLAINS RESOURCES, INC. 08206 HINTON, R.S. -B- SOMERSET GREAT PLAINS RESOURCES, INC. 08207 HIPPENSTEAL UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16441 HIRAM FALOR LA VERNIA PERKINS, EUGENE O. 14635 HIRSCH SWD JOURDANTON PYOTE WELL SERVICE, LLC 16079 HITCHCOCK -A- SAINT THIRTEEN (OLMOS NO. 1) CARRIZO EXPLORATION, INC. 14642 HITCHCOCK -A- UNIT SAINT THIRTEEN (OLMOS NO. 1) CARRIZO EXPLORATION, INC. 14654 HITZFELDER CORN (OLMOS D-2) PROPERTY DEVELOPMENT GROUP, INC. 02605 HITZFELDER PRUE RANCH (ANACACHO) PROPERTY DEVELOPMENT GROUP, INC. 14137 HITZFELDER PRUE RANCH (OLMOS A) PROPERTY DEVELOPMENT GROUP, INC. 14211 HITZFELDER PRUE RANCH (OLMOS B) PROPERTY DEVELOPMENT GROUP, INC. 14250 HITZFELDER PRUE RANCH (SERPENTINE) PROPERTY DEVELOPMENT GROUP, INC. 14212 HITZFELDER PRUE RANCH (2500 OLMOS) PROPERTY DEVELOPMENT GROUP, INC. 14274 HIXON EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15312 HIXON PROPERTIES, INC. MONKSFIELD (350 SAND) HOE OIL COMPANY, INC. 09000 HIXON-CARDEN EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16772


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HIXON-LARSON 'A' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16149 HIXON-LARSON 'B' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16151 HIXON-LARSON 'C' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16159 HIXON-TROUT B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16775 HIXON-TROUT C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17284 HOBBS, WILLIS E. CHEROKEE (NAVARRO) HOUSTON PETROLEUM COMPANY 08904 HODDE, A.W. HODDE (WALES SAND) WYNN-CROSBY OPERATING, LTD. 14644 HODEL 81 WILDCAT APACHE CORPORATION 15200 HODGE DUNLAP BLACKMAR, JIM OIL OPERATOR 09573 HOELSCHER, I.L. EL INDIO, N.(OLMOS) WOLF, DARYL OIL 11398 HOERMANN, SYDNEY LA VERNIA HOERMANN, S. E. 06039 HOFF RANCH EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15255 HOFF RANCH UNIT "A" EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15270 HOFF RANCH UNIT "B" EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15433 HOFF RANCH UNIT "C" EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15434 HOFF RANCH UNIT "D" EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15435 HOFF RANCH UNIT "F" EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15436 HOFFMAN WILDCAT MID-WESTERN OIL & GAS, INC. 12074 HOFFMAN FIRST SHOT (AUSTIN CHALK) BLUEWATER DISPOSALS, L.L.C. 14316 HOFFMAN, ADOLPH SOMERSET PETROSAURUS, INC. 10868 HOFFMAN, FRANK H. SOMERSET PETROSAURUS, INC. 03140 HOFFMAN, HERMAN SOMERSET PETROSAURUS, INC. 03197 HOFFMAN, LILLIE DARST CREEK (BUDA) CT ADAMS JR., LLC 03180 HOFFMAN, MARTIN -B- DARST CREEK (BUDA) CT ADAMS JR., LLC 03178 HOGAN -A- MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 06083 HOGAN -C- MINERVA-ROCKDALE PENROD OIL COMPANY OF TEXAS, INC 07689 HOGAN "B" MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 06228 HOGAN UNIT MILBUR, N. (WILCOX 2660) THREE FORKS OPERATING CO, LLC 14817 HOGAN-SMITH-GARNER MINERVA-ROCKDALE DPM OPERATING 13795 HOGAN, W. P. MILBUR, N. (WILCOX 2660) THREE FORKS OPERATING CO, LLC 03853 HOGAN, W.P. MINERVA-ROCKDALE THREE-C PRODUCTION COMPANY 10524 HOHMANN, PHILIP SOMERSET SEAGULL OPERATING CO., INC. 03677 HOKE SPILLER LULING O&G LLC 03606 HOLCOMB-BRANNING LARREMORE CENTEX PIPE & EQUIPMENT, INC. 00810 HOLCOMBE-WALSTON KAYE (NAVARRO) LT OIL LLC 01842 HOLDSWORTH HOMESTEAD ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16353 HOLDSWORTH NELSON TRUST ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16889 HOLDSWORTH, DAVID INDIO (SAN MIGUEL) ALAMO OPERATING COMPANY, L. C. 14836 HOLDSWORTH, DAVID PEARSALL (AUSTIN CHALK) ALAMO OPERATING COMPANY, L. C. 15084 HOLIDAY GASPER (ATKINSON SAND) RBR OPERATING, INC. 13958 HOLLAN BUCK WHEAT (WALES) JOE KESTNER, L.L.C. 14964 HOLLEY, A.H. MINERVA-ROCKDALE T. D. S. 06487 HOLLOWAY, H. RIDDLE ROYAL TEXAS PETROLEUM 09467 HOLLUB UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15722 HOLMES EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 15517 HOLMES UNIT FRODEIN (GEORGETOWN) P.S.N. PETROLEUM, INC. 11685 HOLMES UNIT STOCKDALE, NE (EDWARDS) ALCOR ENERGY, INC. 11837 HOLSTEIN, R.J. UNIT PANDORA, NW (AUSTIN CHALK) CRYSTAL RESOURCES, INC 11964 HOLUB FIRST SHOT (AUSTIN CHALK) LUCAS ENERGY, INC. 13253 HOLUB, ERNEST SOMERSET GREAT PLAINS RESOURCES, INC. 06896 HOLUBAR DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15823


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HONEY BADGER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15937 HOOD CHEROKEE (NAVARRO) SHOREHAM OIL & GAS COMPANY, INC. 11907 HOOD, CHARLES W. CACHE (OLMOS SHALLOW) HOOD, CHARLES W. 06968 HOOD, LLOYD E. SOMERSET PETROSAURUS, INC. 11290 HOOKER, H. SOMERSET PETROSAURUS, INC. 10322 HOOTER, HERBERT L. SOMERSET E.A.T.E. OPERATING 11082 HOOTER, HERBERT L. -B- SOMERSET E.A.T.E. OPERATING 11083 HOOVER TENNEY CREEK SAUR, JERRY 07445 HOOVER, CHARLES W. MARCELINA CREEK (AUSTIN CHALK) TEN-KEY INC. 13687 HOPPER UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16597 HOPPER, MARGARET GASPER (ATKINSON SAND) FINGER OIL & GAS, INC. 15168 HOPPER, MARGARET ET AL GASPER (ATKINSON SAND) RBR OPERATING, INC. 13975 HORNER RANCH WILDCAT INTERCITY MANAGEMENT CORP. 05186 HORSE LOT MINERVA-ROCKDALE 94 OPERATING, LP 03173 HORTON A.W.P. (OLMOS) WAPITI OPERATING, LLC 10705 HORTON - JCB A.W.P. (OLMOS) WAPITI OPERATING, LLC 13300 HORTON -A-(AMAX) A.W.P. (OLMOS) WAPITI OPERATING, LLC 10408 HORTON -M- A.W.P. (OLMOS) WAPITI OPERATING, LLC 09764 HORTON BALLARD A.W.P. (OLMOS) WAPITI OPERATING, LLC 10663 HORTON R P (TROY BALLARD) A.W.P. (OLMOS) WAPITI OPERATING, LLC 09318 HORTON RANCH A.W.P. (OLMOS) AWP OPERATING COMPANY 12162 HORTON RANCH A.W.P. (OLMOS) AWP OPERATING COMPANY 14112 HORTON, J. L. MINERVA-ROCKDALE NAVALO 03736 HORTON, R P NO. 18 A.W.P. (OLMOS) WAPITI OPERATING, LLC 13933 HORTON, R P NO. 22 A.W.P. (OLMOS) WAPITI OPERATING, LLC 14070 HORTON, R.P. A.W.P. (OLMOS) MILAGRO EXPLORATION, LLC 09423 HORTON, R.P. A.W.P. (OLMOS) XTO ENERGY INC. 08057 HORTON, R.P. -A- A.W.P. (OLMOS) WAPITI OPERATING, LLC 12394 HORTON, R.P. -C- A.W.P. (OLMOS) XTO ENERGY INC. 10239 HORTON, R.P. ET AL A.W.P. (OLMOS) XTO ENERGY INC. 09249 HOSEK MARCELINA CREEK (BUDA) TEXAS LAND OPERATING, LLC 10320 HOSEK UNIT CINDY ANN (AUSTIN CHALK, OIL) ALCOR ENERGY, INC. 13207 HOSEK UNIT EAGLEVILLE (EAGLE FORD-1) WILLIAMS, CLAYTON ENERGY, INC. 15706 HOSKINS EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16335 HOSKINS UNIT A.W.P. (OLMOS) TEXOZ E&P I, INC. 15189 HOSKINS-CURRY UNIT GIDDINGS (AUSTIN CHALK-1) UNION DOMINION OIL CORPORATION 06937 HOSTETTER SWD HOSTETTER, N. (PETTUS) BLUESTONE NATURAL RES. II, LLC 11566 HOUSE, H. D. EZZELL SAN CAJO OIL COMPANY 02648 HOUSING AUTHORITY UNITY SALT FLAT SHEFTS & SHEFTS, INC. 09620 HOWARD ALLEN 01 EAGLEVILLE (EAGLE FORD-1) PIONEER NATURAL RES. USA, INC. 17212 HOWARD, EDNA PEARL PRUITT, SE. (OLMOS) TEXAS EMPIRE PETROLEUM CORP. 01419 HOWELL LEASE #1 LA VERNIA (AUSTIN CHALK) HOWELL CRANE & RIGGING, INC. 06034 HOWELL LEASE #2 LA VERNIA HOWELL CRANE & RIGGING, INC. 07100 HOWELL LEASE #3 (S) LA VERNIA HOWELL CRANE & RIGGING, INC. 02102 HOWETT BRISCOE RANCH (EAGLEFORD) BUFFCO PRODUCTION INC. 15772 HOWETT DOS ARROYOS (SAN MIGUEL) CIVRON PETROLEUM RES., LLC 05226 HOWETT UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17101 HOWETT UNIT ZAV F BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16715 HOWETT-PETTY UNIT 1 DOS ARROYOS (SAN MIGUEL) CIVRON PETROLEUM RES., LLC 10256 HOWETT, M. DOS ARROYOS (SAN MIGUEL) CIVRON PETROLEUM RES., LLC 15881 HOYLE-KOTHMANN DOERING RANCH (GEORGETOWN) VIRTEX OPERATING COMPANY, INC. 16512


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HOYLE, L. DUNLAP BAIR'S LEASE SERVICE, INC. 03812 HOYLE, MONA PEARSALL (AUSTIN CHALK) SEASON OIL & GAS 12723 HRH THOMPSOM PEARSALL (AUSTIN CHALK) SOUTH OIL, INC. 05039 HRNCIR EAGLEVILLE (EAGLE FORD-1) ARGENT ENERGY (US) HOLDINGS INC. 17074 HRNCIR, A.K. BOULDIN (2200) VOMELA RESOURCES INC. 12083 HUBBARD 'A' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16367 HUBBARD 'B' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16399 HUBBARD 'C' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16506 HUBBARD OMEGA "1985" SOMERSET GREAT PLAINS RESOURCES, INC. 11476 HUBBARD. VAS II SOMERSET GREAT PLAINS RESOURCES, INC. 11477 HUBBARD-HARBO SOMERSET GREAT PLAINS RESOURCES, INC. 11421 HUBBARD, WILLA-HARBO "1985" SOMERSET GREAT PLAINS RESOURCES, INC. 11422 HUBBERD WILDCAT STARR OPERATING COMPANY 12807 HUBBERD EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16026 HUBBERD 'A' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16016 HUBER PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16197 HUBER ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16595 HUBER-PERRY MILBUR (NAVARRO) HOUSTON PETROLEUM COMPANY 11339 HUCK EST. PEARSALL (AUSTIN CHALK) PONTIAC OIL, INC. 12477 HUCK-BACH UNIT PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 13261 HUCK-HARRINGTON PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 13161 HUDGENS, ERNEST SALT FLAT EAGLE FORD OIL CO., INC. 08016 HUDSON BULLOH (POTH) CADDO ENERGY CO., INC. 05407 HUEBINGER, R. J. LA VERNIA (190 SAND) EMBREY OIL PRODUCTION CO. 04562 HUEBINGER, R. J. LINNE (POTH -A- SAND) EMBREY OIL PRODUCTION CO. 02403 HUEBINGER, R.H. LA VERNIA HUEBINGER, R. H. 00881 HUETTEL-BROWN PECAN GAP (5050) HOUSTON PETROLEUM COMPANY 11860 HUFF ET AL LULING-BRANYON GINCO OPERATING CO. 08314 HUFF, CHARLES LULING-BRANYON SHEFTS & SHEFTS, INC. 05864 HUFF, CURTIS L. DUNLAP EAGLE FORD OIL CO., INC. 06976 HUFFMAN UNIT #1RE PEARSALL (AUSTIN CHALK) CRIMSON EXPLORATION OPER., INC. 13065 HUGH A FITZSIMONS, ET AL HUGH FITZSIMMONS (SAN MIGUEL) PRIME OPERATING COMPANY 11382 HUGHES PEG (AUSTIN CHALK) JONES, R. M. 02310 HUGHES-ASHBROOK 'A' ESTHER (GEORGETOWN) HUGHES, DAN A. COMPANY, L.P. 16229 HUGHES-CANTU PEARSALL (AUSTIN CHALK) OMNI OPERATING COMPANY(A) 12411 HUGHES, NORTH PEARSALL (AUSTIN CHALK) EXPRESS OIL AND GAS 12506 HUGHES, R. T. -A- SOMERSET GREAT PLAINS RESOURCES, INC. 01626 HUGO ASTRO PEARSALL (AUSTIN CHALK) EXPRESS OIL AND GAS 06305 HUGO HEIRS PEARSALL (AUSTIN CHALK) CENIZA PETROLEUM, INC. 12459 HUGO II PEARSALL (AUSTIN CHALK) CORE E & P CORP. 12415 HUGO-BAKER PEARSALL (AUSTIN CHALK) JENEX PETROLEUM CORPORATION 12896 HUMAN UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16654 HUMMEL COST (BUDA) PRIMROSE RESOURCES, LLC 15070 HUMMEL, ELLA PILGRIM (AUSTIN CHALK) SANTANA ENERGY SERVICES, LLC 13439 HUMMEL, GLENN, POTH -A- UNIT GLEN HUMMEL (POTH) FORT WORTH NATURAL GAS, INC. 03858 HUNDLEY EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15248 HUNTER EAGLEVILLE (EAGLE FORD-1) BOSQUE DISPOSAL SYSTEMS, LLC 16054 HUNTER EAGLEVILLE (EAGLE FORD-1) PETROQUEST ENERGY, L.L.C. 15759 HUNTER B EAGLEVILLE (EAGLE FORD-1) PETROQUEST ENERGY, L.L.C. 17020 HUNTER, B.V. PEARSALL (AUSTIN CHALK) CONCHO OILFIELD SERV & OPER CO. 04952 HUNTER, HELEN CRAIN LEMING (2934 SAND) STRATA STAR PETROLEUM CORP. 09165


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ HUNTER, Q. O. UNIT PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 13129 HURLEY, EUGENE LA VERNIA LAKE CHEROKEE PRODUCTION, LLC 00862 HURLEY, EUGENE LA VERNIA LAND, CLEATUS OIL 00883 HURLEY, EUGENE LA VERNIA TEXAS COASTAL RESOURCES LLC 00843 HURLEY, EUGENE -A- LA VERNIA LAKE CHEROKEE PRODUCTION, LLC 00863 HURLEY, EUGENE -B- LA VERNIA LAKE CHEROKEE PRODUCTION, LLC 00864 HURLEY, GLENN SALT FLAT OFFSPRING WELL SALVAGE 02941 HURRIKAIN PEARSALL (BUDA LIME) BURNETT OIL CO., INC. 16463 HURT DEWVILLE (POTH) EXPRESS OIL CO. 09674 HURT PEACH CREEK (AUSTIN CHALK) OSBORN HEIRS COMPANY 17315 HURT & TARTT WEIGANG ACOCK/ANAQUA OPERATING CO., LP 01769 HURT, ARTHUR "B" PEARSALL (AUSTIN CHALK) BRAZOS PETROLEUM, INC. 06035 HURT, G. R. ET AL CHEROKEE (NAVARRO) SHELDON RESOURCES, L.P. 04179 HURT, ROBBY MOUNTAIN HOME (ELLENBURGER 3730) BROKEN H OIL 07841 HURT, W. T. WEIGANG WILCO ENERGY, J.V. 13309 HUTZLER -A- TAYLOR-INA KLAEGER OPERATING COMPANY II,LLC 03665 HUTZLER "C" TAYLOR-INA KLAEGER OPERATING COMPANY II,LLC 05883 HYATT PLUM CREEK (SERPENTINE) HYATT, RICKY E. 12342 HYDE WILDCAT MUSKEGON DEVELOPMENT COMPANY 15971 HYDE HACKBERRY CREEK (4300) NORDSTRAND ENGINEERING, INC. 04754 HYENA EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16769 HYMAN FAIRFIELD FIVE STAR ENERGY OPERATIONS 02172 HYMANS FARM -B- FAIRFIELD FIVE STAR ENERGY OPERATIONS 02092 ILEY, GEORGE R. ET AL MAG (AUSTIN CHALK) CRYSTAL RESOURCES, INC 13747 ILFREY & WILKERSON -B- SOMERSET PETROSAURUS, INC. 09212 ILTIS, MATHILDA FAIRFIELD SIMCO OIL 11378 IMHOFF KINGSBURY (BUDA LIME) EMERALD BAY ENERGY, INC. 17299 INCE EAGLEVILLE (EAGLE FORD-1) IRONWOOD OIL & GAS LLC 16351 INGRAM/BOWMAN DENT INGRAM (OLMOS 1) CARRIZO EXPLORATION, INC. 11832 INTERCOASTAL FARMS UNIT PEARSALL (AUSTIN CHALK) 1776 ENERGY OPERATORS, LLC 16423 IRA HILDEBRAND UNIT PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 14969 IRVIN EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15575 IRVIN EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 15841 IRVIN A UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16202 IRVIN B UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16205 IRVIN C UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16204 IRVIN FAMILY WILDCAT CHEYENNE PETROLEUM COMPANY 15813 IRVIN FAMILY EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 16381 IRVIN FAMILY UNIT A EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 15729 IRVIN FAMILY UNIT B EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 15999 IRVIN MINERALS SOUTH EAGLEVILLE (EAGLE FORD-1) XTO ENERGY INC. 17116 IRWIN TAYLOR-INA NAILS OPERATING COMPANY LLC 06441 ISABELLA UNIT PEACH CREEK (AUSTIN CHALK) FORD, DON H. & ASSOC. 10727 ISBEL, C.H. JR. A.W.P. (OLMOS) XTO ENERGY INC. 09455 IVEY RANCH DIM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15544 J AVANT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16880 J AVANT UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16231 J D FENNER UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17025 J D FENNER UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16733 J D FENNER UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16735 J J HENRY II EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15345


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ J J HENRY III EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15574 J J HENRY IV EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16598 J RAYES EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15534 J TYLER UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16594 J TYLER UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16786 J W UNIT PANDORA, NW (AUSTIN CHALK) ALCOR ENERGY, INC. 13566 J W UNIT #2 PANDORA, NW (AUSTIN CHALK) LAMBECK PETROLEUM, LLC 13888 J. B. NORTHCUTT SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 15471 J. KOEHLER, NORTH SOMERSET PETROSAURUS, INC. 10655 J. RAYES A UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15557 J. RAYES B UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15548 J.B. BAGGETT-JONES PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 14662 J.C. HENRY EAGLEVILLE (EAGLE FORD-1) TALISMAN ENERGY USA INC. 16921 J.C. WILLIAMS HEIRS INDIO TANKS (PEARSALL) CABOT OIL & GAS CORPORATION 17156 J.M. PRESTON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16991 J.P. HEARD-BOWER D EAGLEVILLE (EAGLE FORD-1) AURORA USA DEVELOPMENT, LLC 15820 JABEZ MINERVA-ROCKDALE OMNI OIL & GAS, INC. 01226 JACK RIPS EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15791 JACKEL -A- SOMERSET GREAT PLAINS RESOURCES, INC. 11084 JACKEL -B- SOMERSET GREAT PLAINS RESOURCES, INC. 11085 JACKEL -C- SOMERSET GREAT PLAINS RESOURCES, INC. 11086 JACKEL -D- SOMERSET GREAT PLAINS RESOURCES, INC. 11088 JACKEL -E- SOMERSET GREAT PLAINS RESOURCES, INC. 11089 JACKEL, C.J. FAIRFIELD DIAMOND TRADING & PIPELINE CORP 09150 JACKPOT UNIT PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 13977 JACKSON PENA CREEK (SAN MIGUEL 3RD) STACHA, EDDY A. 14001 JACKSON OIL CO CHICON LAKE JACKSON COMPANY 03771 JACKSON, A. B. -A- SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 01513 JACKSON, BILL PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12645 JACKSON, ET AL - BLUE QUAIL UNIT BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 17188 JACKSON, LILLIAN SALT FLAT NJP OIL & GAS LLC 02980 JACKSON, SAM ET AL LA VERNIA RAMPAGE EXPLORATION, INC. 07219 JACOB DE LA O 14-A CHICON LAKE RLU OPERATING, LLC 09861 JACOBY FAIRFIELD CALK, ROGER D. 09216 JAHNS, EDDIE DARST CREEK (BUDA) CALTEX ENERGY CO. 06271 JAHNS, EDDIE -A- DARST CREEK (BUDA) CALTEX ENERGY CO. 02953 JAHNS, EDDIE A DARST CREEK (BUDA) CALTEX ENERGY CO. 06198 JAM EAGLEVILLE (EAGLE FORD-1) TIDAL PETROLEUM, INC. 16837 JAMBERS BBJ, N. (WILCOX 5700) OMEGA ENERGY, LLC 10674 JAMBERS EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 15725 JAMBERS, GEORGE T. CLOETER (WILCOX 5800) REPUBLIC RESOURCES, LLC. 13838 JAMES PEARSALL (AUSTIN CHALK) AMPAK OIL COMPANY 14809 JAMES PEARSALL (AUSTIN CHALK) CRYSTAL RESOURCES, INC 13641 JAMES WIATREK EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16297 JAMES, F.C. SOMERSET RAOL COMPANY, THE 11319 JAMES, J. W. SOMERSET JAMCO OIL 01599 JAMES, J.W. SOMERSET RAOL COMPANY, THE 11202 JAMES, L. M. SOMERSET U. D. MAN, INC. 01627 JAMES, MARY L. ETAL SOMERSET U. D. MAN, INC. 01628 JAMES, THOMAS C. LYTTON SPRINGS ROYAL TEXAS PETROLEUM 10595 JAMES, WM. SOMERSET PETROSAURUS, INC. 02697


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ JANEK MARCELINA CREEK (AUSTIN CHALK) PONTIAC OIL, INC. 09983 JANET UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17002 JANICE J SOMERSET PETRO-TEX ENERGY & EXPL.CO.,INC. 11288 JANICKE, FRANK TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 07019 JANIE D SOMERSET EVERETT OIL 01652 JANKE UNIT WEINERT (BUDA) EOG RESOURCES, INC. 17132 JANOTA FIVE MILE (WILCOX, UPPER) CENTEX DEVELOPMENT 09666 JANSZEN SOUTHTON OILEX INT'L INVESTMENTS, INC. 01664 JANSZEN, ERWIN ECKERT GINCO OPERATING CO. 04501 JARRATT LOS ANGELES (3800) GENESIS WELL SERVICE 08642 JARRATT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16807 JARUTOWICZ, ANTON KAYE (NAVARRO) LAKE CHEROKEE PRODUCTION, LLC 01937 JARUTOWITZ KAYE (NAVARRO) LAKE CHEROKEE PRODUCTION, LLC 06304 JARVIS, ROY GAS RIDGE GREAT PLAINS RESOURCES, INC. 07138 JARZOMBEK EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 15774 JARZOMBEK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16112 JARZOMBEK UNIT POTH, EAST (AUSTIN CHALK) FIRST ROCK, INC. 07098 JARZOMBEK, ALFRED UNIT -A- POTH, EAST (AUSTIN CHALK) FIRST ROCK, INC. 07427 JARZOMBEK, VINCENT CINDY ANN (AUSTIN CHALK, OIL) NORDSTRAND ENGINEERING, INC. 12867 JASIK EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16622 JASIK UNIT PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 14597 JASIK, A.J. ET UX LEMING (2934 SAND) JB OIL & GAS WELL SERVICE 09377 JASIK, C. PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 12565 JASIK, EMMA LEMING (2934 SAND) REPUBLIC RESOURCES, LLC. 11482 JASIK, EMMA -A- LEMING (2934 SAND) REPUBLIC RESOURCES, LLC. 11562 JASIK, L.A. LEMING (2934 SAND) REPUBLIC RESOURCES, LLC. 08972 JASIK, S. LEMING (2934 SAND) JB OIL & GAS WELL SERVICE 08507 JASIK, STANLEY J. LEMING (NAVARRO SAND) JB OIL & GAS WELL SERVICE 09902 JASKINIA EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16884 JASKINIA POTH, NW. (BUDA) BAYSHORE OPERATING CORP., L.L.C. 05343 JASKINIA, FRED MARCELINA CREEK (BUDA) SCHROEDER OIL PROPERTIES 09182 JAVELINA UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17058 JAY HARPOLE BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 15850 JBGS BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15348 JBGS UNIT EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15334 JE & LC RODRIGUEZ UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16732 JE & LC RODRIGUEZ UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16571 JE & LC RODRIGUEZ UNIT C LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16474 JEA A EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15391 JEA B EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15286 JEA UNIT D EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15978 JEA UNIT E EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15941 JEA UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17086 JEA UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16607 JEA UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17094 JEA UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17120 JEA UNIT IX LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16831 JEA UNIT L EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16045 JEA UNIT V LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16120 JEA UNIT VI LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17093 JEA UNIT VII LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17111


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ JEA UNIT VIII LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16913 JEA UNIT X LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17087 JEA UNIT XI LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16840 JEA UNIT XII LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17109 JEA UNIT XIII LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16839 JEA UNIT XIV EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17108 JEA UNIT XV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16881 JEA UNIT XVI LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17107 JEA UNIT XVII LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16914 JEA WEST UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16759 JEA WEST UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16761 JEANES EAGLEVILLE (EAGLE FORD-1) VALENCE OPERATING COMPANY 16390 JEFF MOORE -B- DALE-MCBRIDE GALLERY PETROLEUM LLC 14436 JEFFREY EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16064 JEFFREY -B- MINERVA-ROCKDALE COMPREHENSIVE RESEARCH BUR, INC. 09749 JELKS FENTRESS (1750) HIGHER STANDARD OIL COMPANY,INC. 16232 JENDRUSCH BARNES UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15463 JENDRUSCH GEROLD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15344 JENDRZEY UNIT MARCELINA CREEK (AUSTIN CHALK) ARGENT ENERGY (US) HOLDINGS INC. 15798 JENKINS SOMERSET BLACK JACK SERVICES, L.L.C. 10746 JENKINS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16947 JENKINS, C. SOMERSET GREAT PLAINS RESOURCES, INC. 11277 JENKINS, O.R. LULING-BRANYON OIL & PETROLEUM OF MID-TEX 09834 JENKINS, R.D. MINERVA-ROCKDALE JENKINS, R. D. 08989 JENNINGS UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15873 JEREMY B. PETERS FAMILY TRUST EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15911 JERRY JOHNSTON DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15620 JETERO INVESTMENTS COMPANY JETERO (SAN MIGUEL) JENNINGS EXPLORATION COMPANY 07491 JETERO-BOOTH PEARSALL (AUSTIN CHALK) CRIMSON EXPLORATION OPER., INC. 14520 JETT, A. M. MINERVA-ROCKDALE VICEROY PETROLEUM, LP 03036 JETTON, LESTER CHICON LAKE GENIE OIL COMPANY "A" 06940 JEZISEK MILANO, SOUTH (AUSTIN CHALK) BOUNDARY VENTURES, INC. 07706 JIM DAVIS UNIT PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 12642 JJ HENRY IX EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16462 JJ HENRY UNIT V EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16454 JJ HENRY UNIT VI EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16748 JJ HENRY UNIT VII EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16431 JJ HENRY UNIT VIII EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16744 JJ HENRY UNIT X EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17115 JL RESOURCES CHUPICK (OLMOS -A-) WEN-BE 17057 JLH LIC A UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 15885 JLH LIC B UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16091 JLH LIC C UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16152 JLH LIC D UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16254 JLH LIC E UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16975 JLH LIC F UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 17007 JLH LIC G UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16927 JMAK JACOB J&J OIL 15075 JN TYLER UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16614 JN TYLER UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16625 JOASH MINERVA-ROCKDALE OMNI OIL & GAS, INC. 02891


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ JOB, ALFRED SOMERSET PETROSAURUS, INC. 07611 JOB, ALFRED -A- SOMERSET PETROSAURUS, INC. 08605 JOE PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15666 JOE H. BUNCH "AB" LULING-BRANYON E & W OIL, INC. 09083 JOE HINDES 'C' UNIT EAGLEVILLE (EAGLE FORD-1) CABOT OIL & GAS CORPORATION 16730 JOE HINDES 'D' UNIT EAGLEVILLE (EAGLE FORD-1) CABOT OIL & GAS CORPORATION 16743 JOE HINDES 'E' UNIT BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 16950 JOE HINDES 'F' UNIT BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 16957 JOE HINDES "A" UNIT EAGLEVILLE (EAGLE FORD-1) CABOT OIL & GAS CORPORATION 15663 JOE HINDES "B" UNIT EAGLEVILLE (EAGLE FORD-1) CABOT OIL & GAS CORPORATION 15718 JOEY SMITH EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15483 JOHANSON KAYE (NAVARRO) JOHANSON OIL 15123 JOHN JR UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17017 JOHN STRAIT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15329 JOHNS, HAM, FEE LULING-BRANYON ATKINSON, L. G., LLC 03791 JOHNS, OTTO WEAVER & OLSON (POTH) CROSSROADS MINERAL PROD., L.L.C. 03108 JOHNSON MARCELINA CREEK (BUDA) BAYSHORE OPERATING CORP., L.L.C. 14258 JOHNSON PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12619 JOHNSON PEARSALL (AUSTIN CHALK) MCDAY ENERGY CORP. 12922 JOHNSON PEARSALL (AUSTIN CHALK) STRATCO OPERATING CO., INC. 13209 JOHNSON UNIT MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 08823 JOHNSON-KINSEL 'B' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16635 JOHNSON-KINSEL 'D' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16148 JOHNSON-KINSEL A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16690 JOHNSON-KINSEL C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16150 JOHNSON-KINSEL E UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16138 JOHNSON-THREADGILL UNIT SALT FLAT, WEST E. T. OIL COMPANY 06635 JOHNSON, ANDREW PENA CREEK (SAN MIGUEL 3RD) HAMILTON, CLAY 04356 JOHNSON, C.D. KYOTE JOHNSON BROTHERS OIL 00800 JOHNSON, CLARA "A" SOMERSET SEEKER OIL COMPANY, INCORPORATED 13679 JOHNSON, CLARA "B" SOMERSET SEEKER OIL COMPANY, INCORPORATED 13355 JOHNSON, CLARA V. SOMERSET GREAT PLAINS RESOURCES, INC. 11295 JOHNSON, E.F. FENTRESS (1750) DELANEY OIL AND GAS COMPANY 13829 JOHNSON, GEORGE LUND WELPETCO, INC. 08742 JOHNSON, MARY B. SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 15298 JOHNSON, MARY B. -A- SALT FLAT B-3 OIL CO. 01481 JOHNSON, MARY B. -B- SALT FLAT JAVELINA OIL & GAS CO. 01482 JOHNSON, MARY B. ET AL SALT FLAT GINCO OPERATING CO. 03435 JOHNSON, MAYNE GUNN ET AL DILWORTH SOUTH (BUDA) SEGURO WELL SERVICE, INC. 07139 JOHNSON, PAULINE DOS ARROYOS (SAN MIGUEL) RETAMA OIL CORPORATION 04909 JOHNSON, T. C. LULING-BRANYON GREAT PLAINS RESOURCES, INC. 03199 JOHNSON, W. R. CHARLOTTE (NAVARRO) ENERVEST OPERATING, L.L.C. 03293 JOHNSTON BRISCOE RANCH (EAGLEFORD) EF ENERGY, L.L.C. 15786 JOHNSTON CHITTIM (AUSTIN CHALK) NEWFIELD EXPLORATION COMPANY 14354 JOHNSTON PEARSALL (AUSTIN CHALK) FORTUNE OPERATING COMPANY 12644 JOHNSTON & PARR UNIT LITTLE NEW YORK SELLERS LEASE SERVICE, INC. 10127 JOHNSTON -A- PEARSALL (AUSTIN CHALK) FORTUNE OPERATING COMPANY 12907 JOHNSTON -B- PEARSALL (AUSTIN CHALK) FORTUNE OPERATING COMPANY 12938 JOHNSTON -P- PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 04773 JOHNSTON ENTERPRISES DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15771 JOHNSTON-LANE M.E.I (WILCOX 4300) EXPRESS OIL CO. 13847


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ JOHNSTON, JAMES PEARSALL (AUSTIN CHALK) JEM ENERGY 12743 JOHNSTON, JOE H. LITTLE NEW YORK SELLERS LEASE SERVICE, INC. 09193 JOLLEY, A. W. LARREMORE CENTEX PIPE & EQUIPMENT, INC. 00811 JONES PEARSALL (AUSTIN CHALK) NAVAJO EXPLORATION, INC. 13839 JONES-MCGLOTHLIN FAIRFIELD CALK, ROGER D. 06911 JONES, BEATRICE PRUITT, S. (ESCONDIDO) WEN-BE 08821 JONES, BEATRICE PRUITT, S. (ESCONDIDO 4200) WEN-BE 09023 JONES, BURRELL PRUITT, S. (ESCONDIDO) BLEDSOE, R.K. TRUST OIL OPERATOR 09607 JONES, C. L. SR. MARSHA L.O. OIL & GAS, LLC 05421 JONES, C. L., SR. MARSHA L.O. OIL & GAS, LLC 13725 JONES, CHAS. N. LA VERNIA (190 SAND) TABER, ALAN R. 02698 JONES, E. B. PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 05267 JONES, E. B. PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 12370 JONES, G. PEARSALL (AUSTIN CHALK) CRYSTAL RESOURCES, INC 12653 JONES, H.J. PRUITT PEARL, BILL H. PRODUCTIONS, INC. 11647 JONES, I.D. UNIT SALT FLAT, WEST SAUR, JERRY 08580 JONES, J & J GAS RIDGE JONES, JOHN E. 00639 JONES, J. H. -B- PRUITT PEARL, BILL H. PRODUCTIONS, INC. 01401 JONES, LESTER H., ET AL SOMERSET BLACK JACK SERVICES, L.L.C. 03383 JONES, MARY LOU PEACH CREEK (AUSTIN CHALK) SEGURO WELL SERVICE, INC. 07011 JONES, NEWT PEARSALL (AUSTIN CHALK) FRIO OIL & GAS, LTD. 05575 JONES, R.C. UNIT SALT FLAT, WEST SAUR, JERRY 07060 JONES, W.J. -A- TENNEY CREEK TEXARODA DRILLING CO., INC. 08373 JONOTA PILGRIM (AUSTIN CHALK) XOG OPERATING LLC 09087 JONSSON PERLITZ C PILOSA, EAST (2ND SAN MIGUEL) TEXOKAN OPERATING, INC. 14317 JONSSON-PERLITZ "B" PILOSA, EAST (2ND SAN MIGUEL) BOTASCH OPERATING, LLC 10297 JONSSON-PERLITZ "C" PILOSA, EAST (2ND SAN MIGUEL) TEXOKAN OPERATING, INC. 14315 JONSSON-PERLITZ RANCH PILOSA, EAST (2ND SAN MIGUEL) TEXOKAN OPERATING, INC. 14085 JORDAN-WOODWARD UNIT PEARSALL (OLMOS -A-) LEASE ROLLOVER OPERATIONS, INC. 03499 JORDAN, M. JORDAN (NAVARRO B) VICEROY PETROLEUM, LP 10526 JP HEARD BOWER C UNIT EAGLEVILLE (EAGLE FORD-1) AURORA USA DEVELOPMENT, LLC 15799 JP RANCH EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 15976 JP RANCH C EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16005 JP RANCH D EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16006 JP RANCH F EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16781 JRED RANCH BRISCOE RANCH (EAGLEFORD) PATTERSON ENERGY CORPORATION 15247 JRED RANCH B BRISCOE RANCH (EAGLEFORD) PATTERSON ENERGY CORPORATION 15357 JTN UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17045 JUNG, CARMEN EVERGREEN FARMS, NE. (1ST OLMOS) SANDY SWD, LLC 14776 JUNGMAN, GEO. CHICON LAKE K.A. BARNES OIL & GAS OPER, LLC 02022 JUPE 'A' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15912 JUSTIN LEMING (2934 SAND) W.W. ENERGY 10507 JUSTIN TOM 01 EAGLEVILLE (EAGLE FORD-1) PIONEER NATURAL RES. USA, INC. 15749 JUTSON, ARVA L. MINERVA-ROCKDALE PRICE OPERATING, LLC 08044 JUTSON, ARVA LEE MINERVA-ROCKDALE PRICE OPERATING, LLC 08656 JUTSON, ARVA LEE A-1 MINERVA-ROCKDALE PRICE OPERATING, LLC 09579 K. KOTARA EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16276 K.M. RANCH EAGLEVILLE (EAGLE FORD-1) CRIMSON EXPLORATION OPER., INC. 15631 KAF UNIT KATHLEEN ANN (REEF) CIBOLO ENERGY OPERATING, INC. 13923 KAHN MARCELINA CREEK (BUDA) KING'S KID OIL CO., THE 08497 KAIN PEARSALL (AUSTIN CHALK) KAIN PETROLEUM, LLC 14739


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ KAIN "A" PEARSALL (AUSTIN CHALK) KAIN PETROLEUM, LLC 15003 KAISER BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 13830 KAISER DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 04094 KAISER JUNIOR UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17201 KAISER SENIOR D UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17319 KALLIO, R.J. PEARSALL (AUSTIN CHALK) MISSION RIVER SYSTEMS, INC. 12680 KAMINSKI, HERMAN PRUSKE (BUDA) EXXCEL OPERATING COMPANY 12000 KAREN TERRELL CHEROKEE (NAVARRO) SHELDON RESOURCES, L.P. 14729 KARNEI, LENARD SUTIL (REEF) CRYSTAL RESOURCES, INC 06500 KASPAR PILGRIM (AUSTIN CHALK) IRONWOOD OIL & GAS LLC 14281 KASPER MARTINEZ SUN T S H (OLMOS) KASPER OIL & GAS II, L.L.C. 15384 KASPER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17326 KASPER, DON PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 05707 KASSNER MID-FREDDY HUT (WRIGHT) WYNN-CROSBY OPERATING, LTD. 14656 KASSNER ENERGY MANAGEMENT, LLC FREDDY HUTT (WILCOX) INLAND OCEAN, INC. 04406 KASSNER ENERGY MANAGEMENT, LLC FREDDY HUTT, SOUTH (WILCOX) INLAND OCEAN, INC. 06042 KASSNER ENERGY MANAGEMENT,LLC FREDDY HUTT, SOUTH (WILCOX) INLAND OCEAN, INC. 13983 KAYLA UNIT PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 15150 KAYSER, R. F. NIXON AMPAK OIL COMPANY 13941 KEBODEAUX, H.J. SOMERSET QUEST RESEARCH & DEV. CORP. 11276 KEELAND-HILDEBRAND LA VERNIA J&J OIL 00851 KEELAND, W. E. LA VERNIA TEXAS COASTAL RESOURCES LLC 10403 KEELING, GEORGE W. FAIRFIELD CALK, ROGER D. 06899 KEILMANN, LOUIS R. FAIRFIELD EVERETT OIL 06307 KELFER DOERING RANCH (GEORGETOWN) VIRTEX OPERATING COMPANY, INC. 16302 KELLER EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16954 KELLER EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 15958 KELLER HASSE (BUDA) VAMARIE, INC. 09111 KELLER PENA CREEK (SAN MIGUEL 3RD) TXCO RESOURCES INC. 14894 KELLER SOMERSET GREAT PLAINS RESOURCES, INC. 11635 KELLER B EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 15972 KELLER UNIT MARCELINA CREEK (AUSTIN CHALK) MURPHY EXPL. & PROD. CO. - USA 07530 KELLER, EMMA FAIRFIELD CRYSTAL RESOURCES, INC 02149 KELLEY LULING-BRANYON EAGLE FORD OIL CO., INC. 01138 KELLEY WILSON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15919 KELLEY-PEREZ LULING-BRANYON EAGLE FORD OIL CO., INC. 02327 KELLEY, CHARLIE LULING-BRANYON EAGLE FORD OIL CO., INC. 03645 KELLEY, CHARLIE -A- LULING-BRANYON OCCIDENTAL ENERGY COMPANY, INC. 09563 KELLEY, J. J. LULING-BRANYON GREAT PLAINS RESOURCES, INC. 01038 KELLNER GAS UNIT FASHING (EDWARDS LIME -A-) XTO ENERGY INC. 14839 KELLNER-JONAS UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15566 KELLNER-MCMAHON UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15562 KELLNER, ETTA L. FASHING (AUSTIN CHALK) NEWFIELD EXPLORATION COMPANY 14628 KELLY AUSTIN PIERCE (AUSTIN CHALK) SHIDLER, MARK L., INC. 15217 KELLY, J.J. -A- LULING-BRANYON GREAT PLAINS RESOURCES, INC. 06887 KELLY, J.J. -B- LULING-BRANYON GREAT PLAINS RESOURCES, INC. 06860 KELLY, LELIA AUSTIN PIERCE (EDWARDS LIME) SCHMID PROPERTIES, INC. 05796 KEMPEN, A.A. SOMERSET GINCO OPERATING CO. 10927 KENNEDY UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL COMPANY 15865 KENNEDY, H.H. & M.W. MIDWAY (2300 OIL) CADDO ENERGY CO., INC. 12137 KENNEY "B" SOMERSET SEEKER OIL COMPANY, INCORPORATED 13204


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ KENNEY, ALBERT & JOHN SOMERSET PETROSAURUS, INC. 02824 KENNEY, W. P. SOMERSET GREAT PLAINS RESOURCES, INC. 03043 KENNY, WILLIAM PYRON ET UX SOMERSET EMERALD BAY ENERGY, INC. 11757 KENNY, WILLIAM PYRON ET UX SOMERSET HABANERO OPERATING, INC. 11180 KERLICK FIRST SHOT (AUSTIN CHALK) GULF COAST ACQUISITIONS CO. L.C. 13636 KERLIN WILDCAT PAY-DIRT PETROLEUM 14279 KERNER CARSON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15523 KERR EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 16196 KERR, L. A. SOMERSET WEN-BE 11155 KERRCO'S "STERLING RANCH" PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12834 KERSH UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16698 KERSH UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16702 KESTREL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16369 KETCHBAW UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16080 KEVIN UNIT NIXON ROYKO OIL COMPANY 14069 KEYSTONE RANCH PEARSALL (AUSTIN CHALK) LIGHT RESOURCES 14071 KEYSTONE RANCH -A- PEARSALL (AUSTIN CHALK) LIGHT RESOURCES 05204 KEYSTONE/KEYSTONE RANCH PEARSALL (AUSTIN CHALK) LIGHT RESOURCES 13870 KHALSA SASPAMCO BLACK LAGOON OIL, L.L.C. 11412 KIDD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17033 KIDDER "A" SUTIL (BUDA) FIRST ROCK, INC. 14294 KIEFER PEARSALL (AUSTIN CHALK) JENEX PETROLEUM CORPORATION 13016 KIEFER, CHESTER WINDMILL CREEK (ESCONDIDO) BOLLINGER DRILLING CO. 09351 KIES EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16083 KIFER UNIT PILGRIM (AUSTIN CHALK) MARATHON OIL EF LLC 06673 KIFER-LESTER EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16669 KIFER, L. H. PILGRIM (AUSTIN CHALK) KIDD PRODUCTION CO. 13394 KIFER, ROZELLA PILGRIM (AUSTIN CHALK) ORIGIN PRODUCTION COMPANY, INC. 13417 KILBURN-BYRD SOMERSET K.A. BARNES OIL & GAS OPER, LLC 14031 KILLIAN NIXON IPACT 13932 KILLOUGH, BILLY A. A.W.P. (OLMOS) XTO ENERGY INC. 08964 KILMAN, RAY CHEROKEE (AUSTIN CHALK, LO.) HOUSTON PETROLEUM COMPANY 05288 KILMER, ERNEST -A- JONES COVER, DONALD R. 11821 KIM DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16447 KIMBALL EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17191 KINAST, FRANK X. BATESVILLE, SOUTH (SAN MIGUEL) JENEX PETROLEUM CORPORATION 04431 KINAST, FRANK X. -A- BATESVILLE,SOUTH(SAN MIGUEL,SEGA JENNINGS EXPLORATION COMPANY 07062 KINAST, FRANK X. -B- BATESVILLE, SOUTH (ANACACHO) JENNINGS EXPLORATION COMPANY 07448 KINCAID PEARSALL (AUSTIN CHALK) U.S. ENERCORP, LTD. 15333 KING DRUMMOND (AUSTIN 1400) BEDFORD OIL & GAS, INC. 13971 KING PANDORA, NW (AUSTIN CHALK) OUTLINE OIL CORP. 11462 KING PEARSALL (AUSTIN CHALK) DRISCOLL S.W.D. INC. 12679 KING PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 05516 KING FEHNER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15509 KING UNIT A BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 16444 KING UNIT B BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 16469 KING UNIT E BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 16948 KING UNIT G BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 16917 KING-HALL ESTATE NIXON ALCOR ENERGY, INC. 13990 KING-HALL ESTATE NIXON DULA PRODUCTION, LLC 17178 KING-HALL ESTATE -A- STOCKDALE (AUSTIN CHALK) DULA PRODUCTION, LLC 07503


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ KING, ANNIE PEARSALL (AUSTIN CHALK) C6 OPERATING, L.L.C. 13384 KING, DON FAIRFIELD PARK AVENUE RESOURCES, INC. 06201 KING, HOWARD L. BEAR CREEK VIRTEX OPERATING COMPANY, INC. 09894 KING, J. H. CHICON LAKE RLU OPERATING, LLC 00301 KING, J. T. KAYE (NAVARRO) CADDELL WELL SERVICE, INC. 02220 KING, J.H. KING -E- PEARSALL (AUSTIN CHALK) C6 OPERATING, L.L.C. 09748 KING, RUFUS MAG (AUSTIN CHALK) LACY 03, LLC 11999 KING, RUFUS -A- PILGRIM (AUSTIN CHALK) DEE-JAY EXPLORATION COMPANY 06868 KING, RUFUS "A" PILGRIM (BUDA) DEE-JAY EXPLORATION COMPANY 12893 KING,W.H. KAYE (NAVARRO) LAKE CHEROKEE PRODUCTION, LLC 09943 KINGSBERY BRISCOE RANCH (EAGLEFORD) STRAND ENERGY, L.C. 17004 KINNARD PEARSALL (AUSTIN CHALK) RILEY EXPLORATION, LLC 14944 KINNARD-MCCLARTY UNIT PEARSALL (AUSTIN CHALK) VERMILLION PRODUCTION, INC. 13509 KINNARD, OLGA PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 13258 KINSEL MUIL BURK ROYALTY CO., LTD. 12317 KINSEL "B" MUIL BURK ROYALTY CO., LTD. 14373 KINSEL BROWN UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16621 KINSEL BROWN UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16640 KINSEL EARNEST UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16591 KINSEL EARNEST UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16589 KINSEL HQ UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16578 KINSEL HQ UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16823 KINSEL LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16145 KINSEL MILLETT UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16237 KINSEL MILLETT UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16513 KINSEL RR UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16883 KINSEL RR UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16988 KINSEL RR UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16872 KINSEL RR UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16866 KINSEL, E. A. MUIL (QUEEN CITY SAND) ATASCOSA PRODUCTION COMPANY, INC 01277 KINSEY COPPS UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16324 KINSEY COPPS UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16679 KINSLEY UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16834 KIRBY, AMY CHICON LAKE MORE TEXAS OIL 06692 KIRCHOFF EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16836 KIRK 35H PEARSALL (AUSTIN CHALK) EAGLE FORD OIL CO., INC. 12956 KIRK, T.A. ET UX CARRIZO, S. (OLMOS 2370) HAMILTON, CLAY 05682 KITTIE WILDCAT ANGEL LAND CO., INC. 13564 KKL UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17316 KKL UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16762 KKL UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16805 KKL UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17141 KKL UNIT V EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16867 KKL UNIT VI LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17142 KKL UNIT VII LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16763 KLATTENHOFF UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16136 KLEIN-SANCHEZ PEARSALL (AUSTIN CHALK) COX & COX PRODUCTION CO. 12703 KLEIN, M. T. DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02751 KLEIN, M. T. DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02793 KLEIN, M. T. -A- DARST CREEK (BUDA) FORTUNE OPERATING COMPANY 02881 KLEIN, M. T. -B- DARST CREEK (BUDA) AUSTIN OPERATING, LLC. 04195


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ KLEINSCHMIDT, A. LA VERNIA TEXAS COASTAL RESOURCES LLC 00884 KLEMCKE -B- SOMERSET GREAT PLAINS RESOURCES, INC. 11008 KLEMCKE -M- SOMERSET GREAT PLAINS RESOURCES, INC. 11009 KLEMCKE, AMELIA SOMERSET CALK OIL COMPANY 10741 KLEMCKE, THEKLA -B- SOMERSET CALK OIL COMPANY 07334 KLEMKE, FRED SOMERSET SEAGULL OPERATING CO., INC. 06498 KLEPAC EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15347 KLOPEK PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 12417 KLOPEK, A. PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 12153 KLOPEK, AL PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 04950 KLUTH SOUTHTON OILEX INT'L INVESTMENTS, INC. 09495 KLUTTS BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 12120 KM NORTH ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15963 KM SOUTH ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17123 KNAPP, LEO LA VERNIA LAKE CHEROKEE PRODUCTION, LLC 06094 KNAPP, O. L. SOMERSET CIBOLO PRODUCTION, LLC 03926 KNAPP, O.L. SOMERSET CALK OIL COMPANY 10854 KNAPPICK PEARSALL (AUSTIN CHALK) RCLJ CONSTRUCTION, INC. 12594 KNAPPICK SOMERSET CALK OIL COMPANY 10743 KNEUPPER, OTTWIN MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 07389 KNICKERBOCKER, J. -A- DUNLAP FIVE STAR ENERGY, INC. 03860 KNIGHT SOMERSET SEAGULL OPERATING CO., INC. 03566 KNIGHT "B" SOMERSET SEAGULL OPERATING CO., INC. 11141 KNIGHT "C" SOMERSET SEAGULL OPERATING CO., INC. 11487 KNIGHT, ARCHIE SOMERSET UNDERBRINK OIL 10929 KNOBLOCH DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02712 KNOBLOCH A 6-H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14581 KNOBLOCH B 5H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14571 KNOBLOCH C. A 04-H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14500 KNOBLOCH OIL (EMPIRE) DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02771 KNOBLOCH, C. DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02754 KNOBLOCH, C. DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02796 KNOBLOCH, C. (CHEVRON) DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02779 KNOBLOCH, C. -A- DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02758 KNOBLOCH, C. -A- DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02799 KNOBLOCH, C. -A- 05-H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14521 KNOBLOCH, C. -A- 3H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14460 KNOBLOCH, C. -B- DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02759 KNOBLOCH, C. -B- DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02800 KNOBLOCH, C. -B- 4H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14459 KNODEL -D- DARST CREEK (BUDA) FORTUNE OPERATING COMPANY 14481 KNODEL, ANNIE DARST CREEK (BUDA) FORTUNE OPERATING COMPANY 02906 KNODEL, ANNIE DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02752 KNODEL, ANNIE DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02794 KNODEL, ANNIE, -B- DARST CREEK (BUDA) FORTUNE OPERATING COMPANY 03129 KNODEL, ANNIE, -C- DARST CREEK (BUDA) FORTUNE OPERATING COMPANY 03660 KNODEL, ANNIE, -D- DARST CREEK (BUDA) FORTUNE OPERATING COMPANY 04194 KNOPP, EDNA MAE TAYLOR-INA 21ST FOX ENERGY TEXAS, INC. 06252 KNOX, ARTHUR SALT FLAT, WEST LUDWIG OIL EXPLORATIONS INC 07364 KOCH SOMERSET EVERETT OIL 11139 KOCH SOMERSET SEAGULL OPERATING CO., INC. 11225


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ KOCH - DILLEY STATION WILDCAT KOCH PIPELINE COMPANY, L.P. 14728 KOCH, P.S. LA VERNIA KOCH, P. S. 08362 KODIAK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17208 KOEHLER CHICON LAKE BAR M PETROLEUM CO. 12278 KOEHLER LULING-BRANYON AUSTIN OPERATING, LLC. 01144 KOEHLER LULING-BRANYON CASTILLO OIL COMPANY LLC 12744 KOEHLER LULING-BRANYON GINCO OPERATING CO. 01029 KOEHLER SOMERSET EVERETT OIL 11140 KOEHLER SOMERSET K2 PETROLEUM, INC. 11114 KOEHLER SOMERSET SEAGULL OPERATING CO., INC. 11243 KOEHLER, A. -A-3- SOMERSET TRANSAMERICA ENERGY CORP. 11018 KOEHLER, A&V SOMERSET GREAT PLAINS RESOURCES, INC. 06993 KOEHLER, ARTHUR J. SOMERSET GREAT PLAINS RESOURCES, INC. 10963 KOEHLER, FRANK LULING-BRANYON CASTILLO OIL COMPANY LLC 02685 KOEHLER, FRANK LULING-BRANYON EAGLE FORD OIL CO., INC. 05887 KOEHLER, FRANK -A- LULING-BRANYON CASTILLO OIL COMPANY LLC 00996 KOEHLER, FRANK -A- LULING-BRANYON EAGLE FORD OIL CO., INC. 01113 KOEHLER, FRANK -B- LULING-BRANYON CASTILLO OIL COMPANY LLC 02519 KOEHLER, FRANK -C- LULING-BRANYON CASTILLO OIL COMPANY LLC 03531 KOEHLER, FRANK "A" LULING-BRANYON EAGLE FORD OIL CO., INC. 05893 KOEHLER, J SOUTH SOMERSET AMINEX USA, INC. 11627 KOEHLER, J. SOMERSET GINCO OPERATING CO. 01631 KOEHLER, O.L. SOMERSET GREAT PLAINS RESOURCES, INC. 10961 KOEHLER, OTILLIE SOMERSET GREAT PLAINS RESOURCES, INC. 06994 KOEHOLER SOMERSET PETROSAURUS, INC. 11015 KOEMEL, J. J. CHARLOTTE (NAVARRO) GINCO OPERATING CO. 03270 KOEMEL, J.J. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 07020 KOENIG UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16695 KOENIG, VICTOR SUTIL (BUDA) STOCKMAN PETROLEUM COMPANY 06130 KOENIG, W.E. FAIRFIELD CALK, ROGER D. 08550 KOENING, HERBERT LA VERNIA DOEGE, DONALD 08988 KOENNING UNIT EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15394 KOEPP, BILLY A LA VERNIA GLEN DOEGE OIL & GAS 06049 KOEPP, ERIC LA VERNIA NEW BEGINNING 05757 KOI UNIT ROSS LEE (AUSTIN CHALK) UNITED OPERATING, LLC 14842 KOKEL UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16017 KOLAR EAGLEVILLE (EAGLE FORD-1) TIDAL PETROLEUM, INC. 15656 KOLENDA A EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16566 KOLENDA B EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16658 KOLINEK EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15580 KOLLMAN, JOHN & GINNY COOKSEY DOEGE, DONALD 13205 KOLLODZIEJ MARCELINA CREEK (AUSTIN CHALK) BODDEN PRODUCTION 07824 KOLM UNIT A EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 16987 KOLODZIE, WILLIAM LA VERNIA SEACO PRODUCTION 06883 KONE BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 15474 KOONSEN MINERVA-ROCKDALE OMNI OIL & GAS, INC. 01242 KORNFUEHRER LULING-BRANYON NORTH SOUTH OIL, LLC 17330 KORUS A VAS II SOMERSET GREAT PLAINS RESOURCES, INC. 11449 KORUS OMEGA SOMERSET GREAT PLAINS RESOURCES, INC. 11429 KORUS, C. F. -D- DINSMOOR (CARRIZO) GUINN OPERATING COMPANY, LLC 00509 KOSAREK-ALFANO EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16052


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ KOSUB CHICON LAKE K OIL COMPANY 09535 KOSUB UNIT LA VERNIA, WEST (AUSTIN CHALK) G & K OPERATING, LLC 14496 KOTARA EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16061 KOTARA CARTER UNIT INDIO TANKS (PEARSALL) EOG RESOURCES, INC. 17118 KOTARA D EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16556 KOTARA, EMIL J. ET AL LYSSY (CARRIZO -D-) TEXSTAR DRILLING, INC. 14422 KOTARA, ET AL LYSSY (2100 STRINGER) TEXSTAR DRILLING, INC. 16178 KOTHMAN -C- PENA CREEK (SAN MIGUEL 3RD) HAMILTON, CLAY 04410 KOTHMAN-BARNARD PENA CREEK (SAN MIGUEL 2ND) HAMILTON, J. R. 14759 KOTHMAN, I. O. PENA CREEK (SAN MIGUEL 3RD) ESTATE OF DANIEL W. HARTMAN 04364 KOTHMAN, I.O.K. PENA CREEK (OLMOS 2350) ENERGYQUEST II, LLC 11910 KOTHMANN BACKDRAFT (OLMOS) EF ENERGY, L.L.C. 15002 KOTHMANN CARRIZO, S. (AUSTIN CHALK) SAGE ENERGY COMPANY 16018 KOTHMANN UNIT BRISCOE RANCH (EAGLEFORD) EF ENERGY, L.L.C. 15784 KOTHMANN-KERR BRISCOE RANCH (EAGLEFORD) EF ENERGY, L.L.C. 16777 KOTHMANN-KERR UNIT BRISCOE RANCH (EAGLEFORD) EF ENERGY, L.L.C. 16876 KOTHMANN-RANCH BRISCOE RANCH (EAGLEFORD) EF ENERGY, L.L.C. 15735 KOTHMANN, E. B. CHARLOTTE, SW. (OLMOS, UP.) VAC-U-LIFT PRODUCTION CO.,INC. 03489 KOTZEBUE PEARSALL (AUSTIN CHALK) RICOCHET ENERGY, INC. 17063 KOTZUR UNIT MARCELINA CREEK (AUSTIN CHALK) GIDDINGS PIPE & SUPPLY, INC. 07532 KOURS, SOUTH SOMERSET GREAT PLAINS RESOURCES, INC. 11021 KOWALIK UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16465 KOWALIK UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16467 KOZLOW, CAROLINE LULING-BRANYON LEFT BEHIND RECOVERY, LLC 15730 KRAATZ, LOUIS MINERVA-ROCKDALE COTTONWOOD CREEK ENTERPRISES LLC 03990 KRAWETZ -A- PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 12420 KRAWETZ RANCH A UNIT BRISCOE RANCH (EAGLEFORD) SANCHEZ OIL & GAS CORPORATION 16068 KRELL ACLETO CREEK (POTH B) JOHANSON OIL 14812 KRELL ACLETO CREEK (POTH C) JOHANSON OIL 14811 KRELL -A- ACLETO CREEK (POTH C) RAINER ENERGY, INC. 09650 KRELL BROTHERS ACLETO CREEK (POTH B) RAINER ENERGY, INC. 09624 KRELL, W.L. HOLSTEIN (POTH B, LO.) RAINER ENERGY, INC. 03981 KROLL, JOHN C. MARCELINA CREEK (AUSTIN CHALK) SYLVAN ENERGY, LLC 09432 KRUEGER-HOELSCHER UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16529 KRUEGER-ZUNKER UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16366 KRUEGER, W.A. ET AL MILBUR (NAVARRO) BETRO, INC. 05845 KRUSE, ROSE M. MARCELINA CREEK (BUDA) NORDSTRAND ENGINEERING, INC. 12290 KUBACAK PEARSALL (AUSTIN CHALK) HALE, JIM 10353 KUBIAK, DAN -A- MINERVA-ROCKDALE DSW PRODUCTION CORP. 05888 KUDU UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16977 KUENSTLER -A- SOMERSET SEEKER OIL COMPANY, INCORPORATED 11775 KUENSTLER, C.J. SOMERSET SEEKER OIL COMPANY, INCORPORATED 08683 KUHLMAN, GEORGE REASOR (COOKSEY SAND) KOCH, I. ERNEST 02070 KUNTSCHIK PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 12530 KUNTSCHIK-ROEBER PILGRIM (AUSTIN CHALK) ORIGIN PRODUCTION COMPANY, INC. 15708 KURTZ UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17312 KURZ SOMERSET SEAGULL OPERATING CO., INC. 11232 KURZ -A- SOMERSET EVERETT OIL 11108 KURZ -A- SOMERSET SEAGULL OPERATING CO., INC. 11222 KURZ -B- SOMERSET SEAGULL OPERATING CO., INC. 11226 KURZ -C- SOMERSET SEAGULL OPERATING CO., INC. 11240


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ KURZ, BEE T., ETAL SOMERSET ACOCK OPERATING LIMITED 03219 KURZ, EVA -7A- SOMERSET GREAT PLAINS RESOURCES, INC. 12839 KURZ, GARY SOMERSET EVERETT OIL 11109 KURZ, R.G. JR. SOMERSET WSM 08684 KUSAK UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16259 KUYKENDALL EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16435 KUYKENDALL RANCH EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16358 KUYKENDALL UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16694 KYLE GOOD LUCK (SAN MIGUEL) BOLIN, D. M. 06434 KYLIE UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17080 KYNETTE, P. CAMPANA, SOUTH ATLAS OPERATING LLC 00177 KYNETTE, P. CAMPANA, SOUTH (ARGO) ATLAS OPERATING LLC 11982 L KELLNER UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17039 L. S. U. BURGER PLEASANTON (EDWARDS LIME) EXCALIBUR E & P, LLC 14067 L. S. U. LEAL PLEASANTON (EDWARDS LIME) SNG OPERATING, LLC 14068 L.D.S. PEARSALL (AUSTIN CHALK) KILLAM OIL CO., LTD. 16155 L.S.U. FERRY PLEASANTON (EDWARDS LIME) RICKAWAY ENERGY, CORP. 14128 L.S.U. FERRY PLEASANTON (EDWARDS LIME) TANDEM ENERGY CORPORATION 14257 LA BANDERA RANCH BRISCOE RANCH (EAGLEFORD) ANADARKO E&P ONSHORE LLC 15233 LA BANDERA RANCH UNIT A BRISCOE RANCH (EAGLEFORD) ANADARKO E&P ONSHORE LLC 17166 LA CORONA RANCH EAGLEVILLE (EAGLE FORD-1) STONEGATE PRODUCTION COMPANY,LLC 16962 LA CORONA RANCH UNIT B LAS EAGLEVILLE (EAGLE FORD-1) STONEGATE PRODUCTION COMPANY,LLC 16545 LA GRANGE SOMERSET UNDERBRINK OIL 01632 LA GRANGE, ETHEL W. SOMERSET PETROSAURUS, INC. 03191 LA JOLLA CORP PIEDRA CALIENTE (10900) SURE FLOW OIL & GAS, INC. 14633 LA MASTER WILDCAT SERPENTINE OIL CO. 12246 LA ROSITA PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14994 LABAY, LOUIS MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 08120 LABAY, LOUIS (A) MINERVA-ROCKDALE NORTHLAND PETROLEUM, INC. 10221 LABUS MARCELINA CREEK (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 10634 LABUS UNIT MARCELINA CREEK (BUDA) OILSTONE OPERATING, LLC 09919 LABUS, FRANK MARCELINA CREEK (AUSTIN CHALK) JEM ENERGY 06645 LABUS, PROSPER MARCELINA CREEK (BUDA) FIRST ROCK, INC. 14249 LACKEY DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 13882 LACKEY DALE-MCBRIDE HAZELETT OIL, INC. 12027 LACKEY -A- DALE-MCBRIDE TRIPLE C OIL INC. 04113 LACKEY, C. L. -B- DALE-MCBRIDE EXOIL RESOURCES, INC. 04114 LACKEY, C.L. "C" DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 05670 LACKEY, C.L. "O" DALE-MCBRIDE TRINIDAD PETROLEUM, INC. 13905 LACKEY, E. T. DALE-MCBRIDE HAZELETT OIL, INC. 04099 LACKEY, E. T. DALE-MCBRIDE JOSECO - BARNES 12900 LACKEY, V. LULING-BRANYON ATKINSON, L. G., LLC 06684 LADUKE, A.C. PEARSALL (AUSTIN CHALK) COX & COX PRODUCTION CO. 12527 LAGRONE, J.D. CHEROKEE (NAVARRO) BETRO, INC. 06606 LAGUNILLAS CAMP EAGLEVILLE (EAGLE FORD-1) SHALE HUNTER, LLC 15701 LAMASTUS NIXON BLUE RIVER INC. 14997 LAMASTUS STOCKDALE, EAST (BUDA) BLUE RIVER INC. 14935 LAMBECK NIXON ALCOR ENERGY, INC. 12832 LAMBECK PANDORA, NW (AUSTIN CHALK) ALCOR ENERGY, INC. 11581 LAMBECK PANDORA, NW (AUSTIN CHALK) SUMMIT ENERGY OPERATING, CO. 15244 LAMBECK, A.H. JR. ET UX -A- ACLETO CREEK (POTH B) SILVER FALLS PETROLEUM CORP. 10517


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ LAMKIN, W. H. FAIRFIELD CRYSTAL RESOURCES, INC 02464 LAMM, ROBERT P. CHICON LAKE HARDWICK, ROSS H. OIL COMPANY 02856 LAMMERTS PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, INC. 05478 LAMMERTS -A- PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, INC. 13331 LAMMERTS A EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15411 LAMON, JOSEPH CHICON LAKE GENIE OIL COMPANY 00296 LAMPKIN, J. L. MINERVA-ROCKDALE STEDMAN OIL & GAS CO. 05759 LAMZA SWD FIRST SHOT (AUSTIN CHALK) HECKMANN WATER RESOURCES(CVR)INC 15709 LAMZA, CHAS. ET AL MARCELINA CREEK (AUSTIN CHALK) SHIKAR OPERATING CO. 08882 LANCASTER AGI DERBY (GLEN ROSE H2S DISPOSAL) TEXSTAR MIDSTREAM UTILITY, LP 16344 LANCASTER C PEARSALL (BUDA LIME) GOODRICH PETROLEUM COMPANY 15875 LANCE, E. CHICON LAKE RLU OIL & GAS, INC. 14505 LANDGREBE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15481 LANDRUM, WILLIS L. SOMERSET EVERETT OIL 10795 LANFORD, P.B. SOMERSET GREAT PLAINS RESOURCES, INC. 08638 LANFORD, S. T. TAYLOR-INA PARK AVENUE RESOURCES, INC. 05142 LANG UNIT INDIO TANKS (PEARSALL) EOG RESOURCES, INC. 17119 LANG, JESSE ET UX FAIRFIELD LANG, JESSE W. 08543 LANGE -A- A.W.P. (OLMOS) XTO ENERGY INC. 11827 LANGE E EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16993 LANGE, E. A.W.P. (OLMOS) XTO ENERGY INC. 08131 LANGE, L. F. WILDCAT DAWSEY OPERATING COMPANY 14261 LANGLEY-ALLBRIGHT FENTRESS (1750) CHAPARRAL NATURAL RESOURCES,INC. 14938 LANGLEY, R. A.-PORTER, E. SOMERSET LUCROS INTERNATIONAL CORPORATION 03746 LANSFORD PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15502 LAQUE -A- SOMERSET PETROLEUM OILFIELD SERVICES INC. 11187 LAQUE -C- SOMERSET PETROSAURUS, INC. 10944 LARA, QUENTIN FAIRFIELD CRYSTAL RESOURCES, INC 01997 LARISON UNIT SALT FLAT CENTEX PIPE & EQUIPMENT, INC. 09140 LARK JACOB LS OIL 00716 LARK JACOB TEXAS SECONDARY OIL CORPORATION 10716 LARK "D-E-F" JACOB GINCO OPERATING CO. 03980 LARK -A- JACOB INDIAN OIL LTD. 11345 LARK -A- JACOB LS OIL 11752 LARK -G- JACOB GINCO OPERATING CO. 02187 LARK /80 AC./ JACOB INDIAN OIL LTD. 00712 LARK "B" JACOB LS OIL 13311 LARK NORTH JACOB CIBOLO PRODUCTION, LLC 15073 LARK NORTH JACOB J&J OIL 11876 LARK RANCH EAGLEVILLE (EAGLE FORD-1) STATOIL TEXAS ONSHORE PROP LLC 16551 LARRY BLAKEWAY (DIXON SAND) TEXOWA, LLC 14517 LARSON LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15954 LARSON UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16096 LAS VEGAS RANCH BIG WELLS (SAN MIGUEL) TEXAS AMERICAN RESOURCES COMPANY 09683 LAS VEGAS RANCH PEARSALL (AUSTIN CHALK) SABINAL RESOURCES, INC. 12368 LASHLEY SUTIL (REEF) DRUM OIL & GAS, INC. 09588 LASITER, A.L. A.W.P. (OLMOS) XTO ENERGY INC. 09422 LASITER, HUBERT -A- PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 14248 LASITER, M.L. BIG WELLS (SAN MIGUEL) BLUESTAR ENERGY, INC. 13695 LASKOWSKI MARCELINA CREEK (AUSTIN CHALK) IWR OPERATING, LLC 14156 LASKOWSKI B EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16856


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ LASKOWSKI C EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16972 LASKOWSKI OIL UNIT M.J.M. (WILCOX 3750) RICKAWAY ENERGY, CORP. 14101 LASKOWSKI, A WILDCAT PREVAIL ENERGY, INCORPORATED 14264 LASKOWSKI, ANTON M.J.M. (WILCOX 3750) GINCO OPERATING CO. 04219 LASSETER & EPPRIGHT EAGLEVILLE (EAGLE FORD-1) ROSETTA RESOURCES OPERATING LP 16629 LASSETER & EPPRIGHT UNIT A BRISCOE RANCH (EAGLEFORD) ROSETTA RESOURCES OPERATING LP 16738 LASSETER & EPPRIGHT UNIT B BRISCOE RANCH (EAGLEFORD) ROSETTA RESOURCES OPERATING LP 17031 LATHAM-MCKNIGHT PEARSALL (AUSTIN CHALK) NEWFIELD EXPLORATION COMPANY 14909 LAUGHLIN-COOK EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16331 LAVENDER-THIEDE PEACH CREEK (AUSTIN CHALK) PENN VIRGINIA OIL & GAS, L.P. 13677 LAWLER, MAURICE NORTH LULING-BRANYON GREAT PLAINS RESOURCES, INC. 13849 LAWRENCE NIXON L & L PIPE & SUPPLY INC. 08129 LAWRENCE PEACH CREEK (AUSTIN CHALK) TDC ENGINEERING, INC. 08365 LAWSON WEST LAWSON WEST (REEF) FUEGO ENERGY, LLC 14789 LAWSON, OSCAR W. FAIRFIELD AZX PETROLEUM 07589 LAY, LEON LULING-BRANYON LAY, WARREN LEON 03603 LAY, LEON -A- LULING-BRANYON ALTA MESA SERVICES, LP 15257 LAYTON -A- A.W.P. (OLMOS) XTO ENERGY INC. 10500 LAZY A COTULLA BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15213 LAZY A COTULLA UNIT I DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16847 LAZY A COTULLA UNIT II DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16846 LAZY SEVEN RANCH A UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16014 LAZY SEVEN RANCH B UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16034 LEA SWD PEARSALL (OLMOS -A-) HIGH SIERRA WATER-EAGLE FORD,LLC 15833 LEARY TRUST PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14936 LEASMAN-HALL UNIT PANDORA, NW (AUSTIN CHALK) SCHAARON INTERNATIONAL ENERGY 12335 LEASMAN, M.L. PANDORA, NW (AUSTIN CHALK) SCHAARON INTERNATIONAL ENERGY 11886 LEASMAN, MARY LOU ACLETO CREEK (POTH B) BLACK JACK SERVICES, L.L.C. 07920 LEBOW-MERRIWEATHER LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01080 LEDWIG PEARSALL (AUSTIN CHALK) EAGLE FORD OIL CO., INC. 13751 LEDWIG EAST UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16683 LEDWIG EAST UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16802 LEDWIG EAST UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16806 LEDWIG EAST UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16747 LEDWIG KINSEY UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17143 LEDWIG KINSEY UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16842 LEDWIG KINSEY UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16869 LEDWIG LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16793 LEDWIG 34H PEARSALL (AUSTIN CHALK) EAGLE FORD OIL CO., INC. 12710 LEE EAST END SOMERSET EMERALD BAY ENERGY, INC. 11621 LEE RANCH WILDCAT TEXAS SOUTHERN RESOURCES, INC. 13565 LEE WHEELER -C- A.W.P. (OLMOS) WAPITI OPERATING, LLC 15415 LEE, W.T., SR. SOMERSET EMERALD BAY ENERGY, INC. 11390 LEFEVRE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16712 LEGACY/REYNAUD-WEST PEARSALL (AUSTIN CHALK) SJTC HOLDINGS, INC. 13651 LEHMAN EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16544 LEHMAN LULING-BRANYON AUSTIN OPERATING, LLC. 04222 LEHMAN PEARSALL (AUSTIN CHALK) PYOTE WELL SERVICE, LLC 12533 LEHMAN-STRAKE UNIT CARRIZO S. (OLMOS 2680) COX & COX PRODUCTION CO. 07564 LEHMAN, REED S. GRAIN CO. SOUTHTON OILEX INT'L INVESTMENTS, INC. 09463 LEHMANN UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16652


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ LEHMANN UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16644 LEHMANN, O., ETAL LULING-BRANYON AUSTIN OPERATING, LLC. 03100 LEHMBERG SOMERSET GREAT PLAINS RESOURCES, INC. 11274 LENERT, GEORGE E. JOURDANTON VIRTEX OPERATING COMPANY, INC. 00737 LENERT, GEORGE E. JOURDANTON (BUDA) VIRTEX OPERATING COMPANY, INC. 15118 LENERT, GEORGE E. JOURDANTON (NIXON SAND) HD OIL COMPANY 00757 LENERT, GEORGE E. JOURDANTON (QUEEN CITY) HD OIL COMPANY 00762 LENERT, GEORGE E. JOURDANTON (SPARTA SAND) HD OIL COMPANY 00767 LENNON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17090 LENNON, J. J. NIXON AMPAK OIL COMPANY 13946 LENZ LA VERNIA DONOCO OIL COMPANY 02915 LENZ, ADOLF -B- LA VERNIA J.A.G. OIL & GAS 00822 LENZ, ADOLPH LA VERNIA DOEGE, HARRY P. 00895 LENZ, ADOLPH -A- LA VERNIA NEW BEGINNING 06204 LENZ, ADOLPH -X- LA VERNIA NEW BEGINNING 08429 LENZ, J. -A- LA VERNIA LANGE, IRENE 10023 LENZ, JAMES C. LA VERNIA J.A.G. OIL & GAS 00835 LENZ, LOUIS LA VERNIA DONOCO OIL COMPANY 04639 LENZ, LOUIS II LA VERNIA DONOCO OIL COMPANY 00840 LEONARD JACOB CORP. JACOB LOMA OIL COMPANY 00714 LEPORI UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16562 LEPPARD "C" PEARSALL (AUSTIN CHALK) JOHNSON SANFORD OP CO., LTD 13059 LEPPARD RANCH "B" PEARSALL (AUSTIN CHALK) JOHNSON SANFORD OP CO., LTD 12951 LEPPARD, ANNIE MAE PEARSALL (AUSTIN CHALK) JOHNSON SANFORD OP CO., LTD 11331 LEPPERT, E. G. CHICON LAKE FOUR FORTY ONE OIL CO. 06185 LERMA UNIT PANDORA, NW (AUSTIN CHALK) TEXAS, LES & CO. 13886 LERMA UNIT STOCKDALE, N. (CHALK, UPPER) TEXAS, LES & CO. 11944 LESLIE, VERA PEARSALL (AUSTIN CHALK) TEXAN PRODUCTION COMPANY, INC. 13454 LESLIE, VERA C. PEARSALL (AUSTIN CHALK) D. AND Y. YUNK PRODUCTIONS 05808 LESSOR FIRST SHOT (AUSTIN CHALK) BARNETT ENERGY, INC. 12991 LESSOR A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16451 LESSOR B UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16687 LESSOR D UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17288 LESSOR E UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17012 LESTER EAGLEVILLE (EAGLE FORD-1) IRONWOOD OIL & GAS LLC 17157 LESTER RANCH UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15918 LESTER UNIT PILGRIM (AUSTIN CHALK) ORIGIN PRODUCTION COMPANY, INC. 13600 LESTER-BRUNS UNIT CHRISTIAN (6800) MODERN EXPLORATION, INC. 13193 LESTER-RICOCHET EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16618 LESTER, J.B. MAG (BUDA) LUCAS ENERGY, INC. 11580 LESTER, T.E. PILGRIM (AUSTIN CHALK) ORIGIN PROD CO GONZALES PROP LLC 13418 LESTER, THOMAS E JR EAGLEVILLE (EAGLE FORD-1) IRONWOOD OIL & GAS LLC 17134 LEVINE, BEN- LEEDS, L.D. EL INDIO, N. (OLMOS A-11) JANCO OPERATING 10553 LEWIS EAGLEVILLE (EAGLE FORD-1) IRONWOOD OIL & GAS LLC 16398 LEWIS RIMROCK (CANYON 4100) RIO-TEX, INC. 14447 LEWIS SAN MIGUEL CREEK (WILCOX CONS.) ENERQUEST OPERATING L.L.C. 14675 LEWIS UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16102 LEWIS, RAY FAIRFIELD GREAT PLAINS RESOURCES, INC. 09261 LEWIS, W&L SOMERSET GREAT PLAINS RESOURCES, INC. 10953 LEWTON 203 PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 14420 LEY SOMERSET TEJONES OPERATING CORPORATION 11932


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ LEYENDECKER, R. F. LULING-BRANYON COPPERHEAD OIL & GAS, LTD. 02256 LEYENDECKER, R. F. -B- LULING-BRANYON EAGLE FORD OIL CO., INC. 01123 LEYENDECKER, R. F. "A" LULING-BRANYON EAGLE FORD OIL CO., INC. 02203 LIBERATORE RANCH A UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16552 LIBERATORE RANCH B UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16403 LIBERSAT, MAY A.W.P. (OLMOS) WILLIAMS, CLAYTON ENERGY, INC. 10413 LIEBE-HOUSE FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 12599 LIEBE-HOUSE -A- FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 12588 LIEBE-HOUSE -B- FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 12603 LIEBE-HOUSE A FAIRFIELD SIMCO OIL 07002 LIEBE-HOUSE 18 FAIRFIELD SIMCO OIL 13718 LIESMAN EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 17185 LIGHT BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15316 LIGHT MINERALS SAGE CREEK, W. (2ND OLMOS A-3) LIGHTNING OIL COMPANY 14312 LIGHT RANCH BRISCOE RANCH (EAGLEFORD) ROSETTA RESOURCES OPERATING LP 15336 LIGHTSEY, K. TENNEY CREEK B-G OPERATING INC. 08668 LILLY BEAR CREEK VIRTEX OPERATING COMPANY, INC. 17264 LIMMER UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16711 LIND, LESLIE KIMBRO ALTEX PETROLEUM, INC. 07802 LINDHOLM, STEVE RHODE RANCH, SOUTH (2990) H-M RESOURCE MANAGEMENT, INC. 08361 LINNE, O. W. LINNE (POTH -A- SAND) GAUNTT, INC. 00964 LINNE,O.W.,-A- LINNE, S. (POTH -A- SAND) GAUNTT, INC. 04447 LINNSTAEDTER MILANO (GEORGETOWN) VICEROY PETROLEUM, LP 06520 LINNSTAEDTER, VERNON E. CHEROKEE (NACATOCH) VICEROY PETROLEUM, LP 05611 LINSCOMB, ETAL, UNIT 1 SALT FLAT BAIR'S LEASE SERVICE, INC. 02976 LIPPE-HYATT UNIT PLUM CREEK (AUSTIN CHALK) ALDIS OIL 08551 LITTLE DARLIN #2 PLUM CREEK (AUSTIN CHALK) ALDIS OIL 11739 LITTLE L & C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15250 LITTLE SONNY PEARSALL (AUSTIN CHALK) INGRAM, J. OIL & GAS, INC. 13744 LITTLE 162 PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 12785 LITTLE 179 PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 14035 LITTLE-DUKES UNIT DOERING RANCH (GEORGETOWN) VIRTEX OPERATING COMPANY, INC. 16272 LITTLE, JESSE SOMERSET PETROSAURUS, INC. 05976 LITTLE, JESSE A. SOMERSET GREAT PLAINS RESOURCES, INC. 06419 LITTLE, VIRGINIA L. PEARSALL (NAVARRO SAND) JENEX PETROLEUM CORPORATION 01370 LIVENGOOD LULING-BRANYON COPPERHEAD OIL & GAS, LTD. 03553 LIZANA EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15339 LIZANA UNIT EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15703 LLM ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15624 LOCKE PARTNERSHIP EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16241 LOCKHART, PAUL A. JR. SOMERSET TEXAS SECONDARY OIL CORPORATION 10899 LOCKHART, PAUL A. SR. SOMERSET TEXAS SECONDARY OIL CORPORATION 10900 LOCKWOOD, A. M. HORN (5300 SAND) PEARL, BILL H. PRODUCTIONS, INC. 02226 LOCKWOOD, A.M. CHARLOTTE (EDWARDS LIME) J.P. OIL COMPANY, INC. 10074 LOCUS, TERRA LA VERNIA G & J ENERGY 09733 LOESSBERG -B- FAIRFIELD CRYSTAL RESOURCES, INC 06048 LOESSBERG "C" FAIRFIELD CRYSTAL RESOURCES, INC 06172 LOEWENSTEIN MINERVA-ROCKDALE PRICE OPERATING, LLC 01188 LOFTON RIDDLE HERITAGE ENERGY, INC. (NV) 14243 LOGAN, J.C. COST (BUDA) EXPRESS OIL CO. 07553 LOKEY, K.R. NIXON, SE (AUSTIN CHALK) LEMON, RICHARD G. 10603


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ LOMA VISTA ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16882 LONE OAK GROCERY EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15989 LONESTAR UNIT PLEASANTON (EDWARDS LIME) EXCALIBUR E & P, LLC 14090 LONG SOMERSET EVERETT OIL 11972 LONG, J.Y. SOMERSET GREAT PLAINS RESOURCES, INC. 12175 LONGCOPE-PRATT SPILLER FINALY RESOURCES LLC 09116 LONGCOPE-PRATT -A- SPILLER FINALY RESOURCES LLC 08721 LONGCOPE-PRATT -B- SPILLER FINALY RESOURCES LLC 09117 LONGCOPE"B"--PRATT"A" SPILLER FINALY RESOURCES LLC 08903 LONGHORN PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 15280 LONGORIA, THOS.,ET.UX. SOMERSET EVERETT OIL 06436 LOOMIS, JOE PILGRIM (AUSTIN CHALK) ORIGIN PRODUCTION COMPANY, INC. 14998 LOPEZ SOMERSET GREAT PLAINS RESOURCES, INC. 11023 LOPEZ, JULIAN SALT FLAT LUTEX OIL, LTD. 03102 LOPEZ, L.L. FAIRFIELD GINCO OPERATING CO. 06652 LOPEZ, MARTIN ALFRED HIGGINS GEO-GRAPHIC PRODUCTION, INC. 14110 LOPEZ, TOMASA RANGEL SALT FLAT SHEFTS & SHEFTS, INC. 03026 LORD A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15886 LORD C UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16979 LORD D UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16360 LORENZ NIXON SUMMIT ENERGY OPERATING, CO. 13956 LORENZ, J. P. /WEST/ ACLETO CREEK (POTH SAND) SWIESS & THOMAS 00002 LORENZ, W. W. NIXON ALCOR ENERGY, INC. 11774 LORENZ, W. W. STOCKDALE, EAST (CHALK, UPPER) ALCOR ENERGY, INC. 11823 LORENZ, W.W. UNIT NIXON AP TEXAS ENERGY, INC. 11843 LOS ANGELES SWD LOS ANGELES (4800) HIGH SIERRA WATER-EAGLE FORD,LLC 15644 LOS ANGELES UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15990 LOSOYA SOMERSET GREAT PLAINS RESOURCES, INC. 10935 LOTTIE LEE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16446 LOTTIE LEE B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16851 LOTTIE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16821 LOVE, EDNA CHEROKEE (NAVARRO) HOUSTON PETROLEUM COMPANY 07682 LOVE, EDNA MILBUR (POTH) HOUSTON PETROLEUM COMPANY 05717 LOVE, JOHN DUNLAP GARRISON LTD. 08002 LOVE, JOHN L. DUNLAP GARRISON LTD. 06454 LOVE, JOHN L. -A- DUNLAP GARRISON LTD. 07834 LOVE, JOHN L. -C- DUNLAP GARRISON LTD. 12399 LOVE, L. W. CHEROKEE (NAVARRO) EXPLORATION TECHNIQUES INC. 15215 LOVE, L. W. MILBUR (POTH) EXPLORATION TECHNIQUES INC. 15214 LOVE, R. B. CHARLOTTE (NAVARRO) AVIGHNA ENERGY INC 03317 LOVELADY, GARY -B- LA VERNIA TEXAS COASTAL RESOURCES LLC 06852 LOVELL DALE-MCBRIDE FOYORO ENERGY, LLC 13840 LOW, N.R. DUNLAP AUSTIN OPERATING, LLC. 06410 LOWE PASTURE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16277 LOWE, SAMMY A. CHICON LAKE RLU OPERATING, LLC 07749 LOWERY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16964 LOWMAN, R. P. STAPLES AUSTIN OPERATING, LLC. 06328 LOWMAN, R.G. STAPLES AUSTIN OPERATING, LLC. 06281 LOZANO, HECTOR KYOTE LAHOMA PROPERTIES, INC. 10366 LOZANO, HECTOR C. KYOTE UNITED OPERATING, LLC 08603 LUBEL UNIT #1 SOMERSET PETRO-TEX ENERGY & EXPL.CO.,INC. 12132


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ LUBIANSKI, EMIL COOKSEY FARMER, DON 06839 LUCAS TENNEY CREEK AUSTIN OPERATING, LLC. 08208 LUCAS 'B' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15895 LUCAS 'C' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15882 LUCAS "A" EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15778 LUCAS, A.L. -A- MINERVA-ROCKDALE MIS-TEX OIL CORPORATION 08613 LUCE, ABE LULING-BRANYON GEOMEG ENERGY OPERATING CO., LLC 14289 LUCE, ABE LULING-BRANYON NORTHRIDGE EXPLORATION, INC. 01143 LUCI LABAY MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 17184 LUCKSINGER, PAUL LADY SHARON (DALE LIME) ROYAL TEXAS PETROLEUM 13350 LUCY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17174 LUDDEKE, HERMAN LA VERNIA ALCORN ENERGY, L.L.C. 06016 LUEDERS SOMERSET GREAT PLAINS RESOURCES, INC. 11255 LUEDERS-PEGG UNIT SOMERSET GREAT PLAINS RESOURCES, INC. 11262 LUETGE MINERVA-ROCKDALE PETRO DELTA 01250 LUETGE, LOUIS UNIT BULLOH (NAVARRO) MICRO OPERATING, INC. 05692 LUETGE, O. F. MINERVA-ROCKDALE PRICE OPERATING, LLC 01186 LUETGE, PERRY BULLOH (NAVARRO) MICRO OPERATING, INC. 05691 LUFFEL BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15292 LUJAN, EMILIA -B- CHARLOTTE (AUSTIN CHALK) J.P. OIL COMPANY, INC. 03266 LUJAN, EMILIA -B- CHARLOTTE (EDWARDS LIME) J.P. OIL COMPANY, INC. 03268 LUJAN, N. R. CHARLOTTE, NORTH 3-L DRILLING 03997 LUKER, CARL S. FAIRFIELD LUKER, CARL S. 10482 LULING AIRPORT DUNLAP CENTEX PIPE & EQUIPMENT, INC. 03138 LULING AIRPORT DUNLAP GEOMEG ENERGY OPERATING CO., LLC 12474 LULING COUNTRY CLUB SALT FLAT, WEST E. T. OIL COMPANY 06825 LULING FOUNDATION SALT FLAT BAIR'S LEASE SERVICE, INC. 02989 LULING FOUNDATION SALT FLAT, WEST ARMIDILLO OIL COMPANY 07829 LULING FOUNDATION SPILLER PRONTO SERVICES 01685 LULING FOUNDATION, THE SALT FLAT ARMIDILLO OIL COMPANY 02986 LULING TOWNSITE UNIT SALT FLAT REDSKIN OIL LLC 03187 LULING TOWNSITE UNIT NO. 2 SALT FLAT BLALACK, JAMES WILLIAM 03189 LULING UNIT #2 SALT FLAT CASTILLO OIL COMPANY LLC 02951 LULING UNIT #3 SALT FLAT CASTILLO OIL COMPANY LLC 02984 LULING UNIT #4 SALT FLAT CASTILLO OIL COMPANY LLC 02981 LULING UNIT #5 SALT FLAT CASTILLO OIL COMPANY LLC 02960 LULING UNIT #8 SALT FLAT CASTILLO OIL COMPANY LLC 02985 LUMPKINS GINNY JOHNSON (NAVARRO A) SELLERS LEASE SERVICE, INC. 11915 LUMPKINS, GEO. B. MINERVA-ROCKDALE COMANCHE WELL SERVICE CORP. 03070 LUMPKINS, GLEN B DIXIE (NAVARRO B) SELLERS LEASE SERVICE, INC. 10345 LUNA, MONICO PRUITT, S. (ESCONDIDO) SEDCO OPERATING, LLC 09036 LUNDGREN, FRED JR. WILDCAT LUNDGREN, FRED, JR. 09712 LUPE, JOHN B. -B- BIG WELLS (SAN MIGUEL) BLUESTAR ENERGY, INC. 05165 LUPE, JOHN B. -D- BIG WELLS (SAN MIGUEL) BLUESTAR ENERGY, INC. 14183 LUPE, JOHN B. -E- BIG WELLS (SAN MIGUEL) BLUESTAR ENERGY, INC. 14186 LUPE, JOHN B. A BIG WELLS (SAN MIGUEL) BLUESTAR ENERGY, INC. 14166 LUPE, JOHN B. C BIG WELLS (SAN MIGUEL) BLUESTAR ENERGY, INC. 14167 LYDA/GOSE SOMERSET RAMPAGE EXPLORATION, INC. 08486 LYDA/GOSE -A- SOMERSET RAMPAGE EXPLORATION, INC. 08542 LYDA/MCG SOMERSET RAMPAGE EXPLORATION, INC. 08156 LYDA/TERP UNIT -A- SOMERSET RAMPAGE EXPLORATION, INC. 08031


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ LYDA/TERP UNIT -B- SOMERSET RAMPAGE EXPLORATION, INC. 08032 LYDA, GERALD SOMERSET RAMPAGE EXPLORATION, INC. 06363 LYDA, GERALD UNIT -C- SOMERSET RAMPAGE EXPLORATION, INC. 08106 LYDA, GERALD UNIT -D- SOMERSET RAMPAGE EXPLORATION, INC. 08291 LYDA, GERALD UNIT -E- SOMERSET RAMPAGE EXPLORATION, INC. 08458 LYDA, GERALD UNIT -F- SOMERSET RAMPAGE EXPLORATION, INC. 08459 LYDA, GERALD UNIT -G- SOMERSET RAMPAGE EXPLORATION, INC. 08626 LYDA, GERALD UNIT -W- SOMERSET RAMPAGE EXPLORATION, INC. 09505 LYDIA NIXON BLUE RIVER INC. 12201 LYDIA NIXON (AUSTIN CHALK, LO.) BLUE RIVER INC. 14451 LYNN, BEATRICE ACLETO CREEK (POTH A) TRIPLE H PRODUCTION 10518 LYONS SOMERSET GREAT PLAINS RESOURCES, INC. 07103 LYONS -A- SOMERSET GREAT PLAINS RESOURCES, INC. 11025 LYONS -D- SOMERSET GREAT PLAINS RESOURCES, INC. 11026 LYONS, PAUL, UNIT SOMERSET 3-L DRILLING 03510 LYSSY -A- TRI BAR, NORTH (OLMOS) LEWIS PETRO PROPERTIES, INC. 12107 LYSSY -B- TRI BAR, NORTH (OLMOS) LEWIS PETRO PROPERTIES, INC. 12108 LYSSY 709 TRI BAR, NORTH (OLMOS) LEWIS PETRO PROPERTIES, INC. 15043 LYSSY 720 TRI BAR, NORTH (OLMOS) LEWIS PETRO PROPERTIES, INC. 14929 LYSSY, KENNETH FAIRFIELD GINCO OPERATING CO. 05745 LYSSY, MARY LYSSY (CARRIZO -D-) TEXSTAR DRILLING, INC. 08311 LYSSY, MARY LYSSY (2100 STRINGER) TEXSTAR DRILLING, INC. 04848 M & M FRANK LEASE LYTTON SPRINGS L.O. OIL & GAS, LLC 11771 MAALI EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15395 MACINTYRE, J.A. -B- LULING-BRANYON EAGLE FORD OIL CO., INC. 03731 MACINTYRE, JOHN A. LULING-BRANYON EAGLE FORD OIL CO., INC. 01124 MACKEY DARST CREEK (BUDA) GINCO OPERATING CO. 03878 MACKIN, J. TENNEY CREEK ALTA MESA SERVICES, LP 08440 MADDOX, LORENE LA VERNIA XSTOR ENERGY, LLC 06280 MADDOX, W. D. LA VERNIA TEXAS COASTAL RESOURCES LLC 00886 MADDOX, W. D. -A- LA VERNIA LAND, CLEATUS OIL 00887 MADDOX, W. D. -B- LA VERNIA TEXAS COASTAL RESOURCES LLC 00885 MADGE SHANKLIN WILDCAT MEGAWEST ENERGY TEXAS CORP. 14973 MADISON "A" MARSHA WESTSTAR PETROLEUM CORPORATION 13735 MAGANA CHICON LAKE GENIE OIL COMPANY 09125 MAGNUSON, H. J. KIMBRO MCCLOSKEY, ROBERT A. 00786 MAHAN EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17240 MAHAN SOMERSET RAINER ENERGY, INC. 10798 MAHAN "A" SOMERSET RAINER ENERGY, INC. 10805 MAHAN SOUTH EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16062 MAHAN-COLWELL EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17238 MAHAN, T. J. SOMERSET SEAGULL OPERATING CO., INC. 03442 MAHAN, T.J. -A- SOMERSET SEAGULL OPERATING CO., INC. 10884 MAHLER, E. W. FAIRFIELD DIAMOND TRADING & PIPELINE CORP 02133 MAHONEY SAN MIGUEL CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 14870 MAHONEY UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16728 MAHULA, LEE H. JONES CLEAR WATER OIL & GAS CORP. 10520 MAK RANCH EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16015 MALAER DARST CREEK (BUDA) DJ EXPLORATION, INC. 02741 MALATEK PILGRIM (AUSTIN CHALK) BYRD OPERATING COMPANY 12819 MALATEK, JOE PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 07036


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MALCHER, R. W. POTH, NORTH (AUSTIN CHALK) K & R OIL INC. 05739 MALDONADO, JOSE S. FAIRFIELD MORE TEXAS OIL 06629 MALEY LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16484 MALLARD, T.B. "B" BIG FOOT BALCONES OIL CO., INC. 05648 MALONE, C., -A- SALT FLAT LUTEX OIL, LTD. 03086 MALONE, CHESTER LA VERNIA MALONE OIL PRODUCTION 06205 MALONE, CORA LULING-BRANYON AUSTIN OPERATING, LLC. 01027 MALONE, CORA SALT FLAT B. J. P. OPERATING 01470 MALONE, CORA SALT FLAT LUTEX OIL, LTD. 02936 MALONE, CORA ESTATE SALT FLAT OCCIDENTAL ENERGY COMPANY, INC. 01532 MALONE, R. W. SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 01515 MALTSBERGER EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15381 MALTSBERGER NORTHCUT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17325 MALVEN, CHAS. W. SOMERSET PETROSAURUS, INC. 03251 MALVERN, CHARLES SOMERSET PETROSAURUS, INC. 10869 MANDEL, ANTON -A- DARST CREEK (BUDA) CALTEX ENERGY CO. 06622 MANDUJANO, ALFONZO SOMERSET MANDUJANO, ALFONSO & OLGA 11275 MANFORD RANCH-CHANDLER 1 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17083 MANFORD RANCH-CHANDLER 2 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17084 MANFORD RANCH-HENRY 1 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17085 MANFORD RANCH-HENRY 2 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17097 MANFORD, T.D. -G- SMILEY, SE (AUSTIN CHALK) ENERGETICS OPERATING COMPANY 07479 MANGOLD, H. FAIRFIELD FREEMAN, J. L., OPER. 09992 MANGUM, ET.AL. V. DESHAZO (ANACACHO) ATLAS OPERATING LLC 13686 MANION-JAGGE SOMERSET BETA OIL CORPORATION 07159 MANN PLEASANTON, E. (ESCON FLT B5000) BRYMER CONTRACTING INCORPORATED 09873 MANN "B" PEARSALL (AUSTIN CHALK) STRATCO OPERATING CO., INC. 13270 MANN "C" PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 13060 MANN-MOPAC UNIT PLEASANTON, E. (EDWARDS) PEARL, BILL H. PRODUCTIONS, INC. 09566 MANN-SAN MIGUEL PEARSALL (AUSTIN CHALK) ROCK SOLID OPERATING, LLC 15050 MANN, ED -A- PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 05265 MANN, EDWARD STACY (OLMOS -A-) NEUMANN OIL & GAS, LLC 01697 MANNAS AND JOHNSTON -A- PEARSALL (AUSTIN CHALK) MCRAE HORIZONTAL DRILLING, INC. 04755 MANNING EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16087 MANNING, R. V. SPILLER AUSTIN OPERATING, LLC. 03358 MAPLES, J. E. ECKERT LUCROS INTERNATIONAL CORPORATION 00546 MARBACH SOMERSET WSM 10819 MARBURGER PEARSALL (AUSTIN CHALK) OILFIELD EXPLORATION SWD #1 10525 MARCEE PEACH CREEK (AUSTIN CHALK) UNITED OPERATING, LLC 14924 MARCUS SOPHIA (WILCOX CONSOL.) HAWTHORN ENERGY PARTNERS, LLC 14546 MARGARITA PEARSALL (AUSTIN CHALK) EXPRESS OIL AND GAS 12962 MARGUERITE PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16477 MARIA PEARSALL (AUSTIN CHALK) CRYSTAL RESOURCES, INC 12788 MARINES, L 3-H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14379 MARINES, L. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01081 MARK & SANDRA BRISCOE RANCH (EAGLEFORD) SANCHEZ OIL & GAS CORPORATION 15883 MARK & SANDRA LORENZO (AUSTIN CHALK) SANCHEZ OIL & GAS CORPORATION 17164 MARK & SANDRA UNIT BRISCOE RANCH (EAGLEFORD) SANCHEZ OIL & GAS CORPORATION 16060 MARK BROWN EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15844 MARMION UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16877 MARRS MCLEAN BRISCOE RANCH (EAGLEFORD) EF ENERGY, L.L.C. 15864


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MARRS MCLEAN BRISCOE RANCH (EAGLEFORD) VIRTEX OPERATING COMPANY, INC. 17169 MARRS MCLEAN PEARSALL (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 16221 MARRS MCLEAN A/C UNIT PEARSALL (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 16498 MARSH PLEASANTON, E. (EDWARDS) PATTERSON ENERGY CORPORATION 14932 MARSH, WOODROW PLEASANTON, E. (BUDA) PATTERSON ENERGY CORPORATION 14891 MARSH, WOODROW PLEASANTON, E. (EDWARDS) PEARL, BILL H. PRODUCTIONS, INC. 08797 MARSHALL SOMERSET OIL PRODUCTION SERVICE 11231 MARSHALL, MORRIS A.W.P. (OLMOS) AWP OPERATING COMPANY 11928 MARSHALL, T. R. UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15249 MARTHA BRISCOE SWD SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 16336 MARTIN BATEMAN (AUSTIN CHALK) FOYORO ENERGY, LLC 09780 MARTIN -A- SOMERSET PETROSAURUS, INC. 11367 MARTIN 'A' 9 SUN T S H (OLMOS) LEWIS PETRO PROPERTIES, INC. 14751 MARTIN DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16420 MARTIN MASON EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15356 MARTIN MASON B EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15437 MARTIN MASON UNIT D EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15420 MARTIN MASON UNIT E EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15425 MARTIN MASON UNIT K EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16434 MARTIN MASON UNIT N EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15426 MARTIN MASON UNIT U EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16466 MARTIN RANCH A EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 15980 MARTIN RANCH B EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 15932 MARTIN TR. 2 SUN T S H (OLMOS) LEWIS PETRO PROPERTIES, INC. 14587 MARTIN TR. 4 SUN T S H (OLMOS) LEWIS PETRO PROPERTIES, INC. 14752 MARTIN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15965 MARTIN UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16677 MARTIN UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16582 MARTIN UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16675 MARTIN-MASON RANCH UNIT A EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15510 MARTIN, B. SCOTTY (BARTOSH SAND) RICKAWAY ENERGY, CORP. 01570 MARTIN, BOBBY T. PARMER (PALUXY) D & A CO. 04001 MARTIN, C. F. SOMERSET PETROSAURUS, INC. 05506 MARTIN, J. C. SUN T S H (OLMOS) SWIFT ENERGY OPERATING, LLC 14987 MARTIN, J.C. (BUFFALO) COOKE, WEST (OLMOS) SWIFT ENERGY OPERATING, LLC 05663 MARTIN, JIM LA PARITA CORE E & P CORP. 09901 MARTIN, W. R. BATEMAN (AUSTIN CHALK) R & S OIL PRODUCTION CO. 03218 MARTIN, W. R., ETAL BATEMAN R & S OIL PRODUCTION CO. 00018 MARTINDALE EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15458 MARTINDALE LOS ANGELES (3800) EXPRESS OIL CO. 13967 MARTINDALE JARRATT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16791 MARTINDALE L & C EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15967 MARTINDALE ORNDOFF UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16187 MARTINEZ DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15826 MARTINEZ ET AL SOMERSET MORE TEXAS OIL 10752 MARTINEZ UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16097 MARTINEZ-NORMAN SUTIL (AUSTIN) OMNI OPERATING COMPANY(A) 13251 MARTINEZ, ADELA FAIRFIELD CALK, ROGER D. 06156 MARTINEZ, RENATO FLORESVILLE, S. (AUSTIN CHALK) OMNI OPERATING COMPANY(A) 10683 MARY MARTHA CHRISTIAN (6800) ORIGIN PROD CO GONZALES PROP LLC 10062 MASELES, ET AL FIRST SHOT (AUSTIN CHALK) HUGHES, DAN A. COMPANY, L.P. 13133


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MASSENGALE MINERVA-ROCKDALE DISSMORE RESOURCES INTL., LLC 11896 MASSEY CHILDREN PEARSALL (AUSTIN CHALK) EXPRESS OIL AND GAS 12526 MASSEY, CARLTON PEARSALL (AUSTIN CHALK) BRAZOS PETROLEUM, INC. 04823 MASSEY, CECIL TENNEY CREEK CLAY-WES CO. 08351 MASSEY, MARVIN M. JR. FAIRFIELD BLACKBIRD OIL & GAS, LLC. 06695 MASTERS SOMERSET SEEKER OIL COMPANY, INCORPORATED 11261 MASUR, E.B. LULING-BRANYON EVENING OIL SERVICES, INC. 07169 MATFLOWER INVESTMENTS CO. ROCKY CREEK (ESCONDIDO) CUATRO PETRO CORP. 14095 MATHIS-BRACEWELL PEARSALL (AUSTIN CHALK) HARRIS ENERGY CORP. 12614 MATKIN EZZELL SAN CAJO OIL COMPANY 00569 MATOCHA A.W.P. (OLMOS) MILAGRO EXPLORATION, LLC 10316 MATOCHA A.W.P. (WALES) MILAGRO EXPLORATION, LLC 12003 MATTECK, CARL NOACK TRACKER OIL & GAS, INC. 01294 MATTHEWS DAVIS (EDWARDS 7481) JENEX PETROLEUM CORPORATION 08905 MATTHEWS SALT FLAT DARST CREEK OIL COMPANY 02154 MATTHEWS, NED PRYOR RANCH, WEST (ELAINE) HOUSTON OIL FIELDS CO. 05598 MATTKE, ALBERT LA VERNIA JSD OIL, LTD. 00847 MATTKE, ALBERT -A- LA VERNIA JSD OIL, LTD. 10477 MATTKE, C.J. -A- MAPLE HUGHES (BURTON 1550) LAKE CHEROKEE PRODUCTION, LLC 08280 MATTKE, C.J. -B- MAPLE HUGHES (BURTON 1550) LAKE CHEROKEE PRODUCTION, LLC 10269 MATTKE, C.J. ET AL MAPLE HUGHES (BURTON 1550) LAKE CHEROKEE PRODUCTION, LLC 07672 MATULA, ROBERT DEBBY (MIRANDO UP) TEXAS SECONDARY OIL CORPORATION 06365 MATZIG, FRITZ MINERVA-ROCKDALE SMITH, L C PRODUCTION 09527 MATZIG, OTTO MINERVA-ROCKDALE TAHITI PTRS ENRGY SOLUTIONS CORP 09053 MAUCH EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15455 MAUCH-HENKE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16427 MAUCH-KRUEGER UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15687 MAUCH-TOM UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15685 MAUERMAN MONKSFIELD (350 SAND) SOUTH SAM OPERATING COMPANY, LLC 07329 MAUERMAN -A- MONKSFIELD (350 SAND) SOUTH SAM OPERATING COMPANY, LLC 08545 MAUERMANN MONKSFIELD (350 SAND) SOUTH SAM OPERATING COMPANY, LLC 04530 MAUERMANN -B- MONKSFIELD (350 SAND) SOUTH SAM OPERATING COMPANY, LLC 08119 MAY GIRLS EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16413 MAY HERITAGE TRUST, THE LA VERNIA 3-L DRILLING 06581 MAY-CHAPMAN EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16009 MAY, D.C. SOMERSET GREAT PLAINS RESOURCES, INC. 10919 MAY, FRANCIS LA VERNIA FALOR, ALLEN C. 06607 MAYFLOWER INVESTMENT CO. PENA CREEK (SAN MIGUEL 3RD) CUATRO PETRO CORP. 04321 MAYHEW, GUY CHICON LAKE CIVCO OPERATING LLC 02188 MAYO PEARSALL (AUSTIN CHALK) CARRIZO EXPLORATION, INC. 05056 MBF LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16057 MCADAMS BULLOH (NAVARRO) DOUBLE DEUCE OPERATING 12668 MCAFEE PEARSALL (AUSTIN CHALK) GLOBAL DRILLING, LLC 13034 MCANELLY, JAMES W. ET UX ADAMS (BUDA) MCANELLY OIL CO. 05553 MCBRIDE, A. K. CHARLOTTE (NAVARRO) ENERVEST OPERATING, L.L.C. 03296 MCBRIDE, FLOSSIE ET AL CHEROKEE (NAVARRO) SHOREHAM OIL & GAS COMPANY, INC. 08054 MCBROOM, KERR SOMERSET MCBROOM, BETTY J. 10894 MCCAIN SOMERSET SOUTHWEST LOOP 1604, LTD. 11216 MCCAIN -A- SOMERSET SOUTHWEST LOOP 1604, LTD. 11228 MCCAIN UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16445 MCCAIN, L.W. SOMERSET GLOBAL TRAINING ACADEMY, INC. 11101


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MCCAIN, L.W. -A- TRACT 3 SOMERSET WSM 10783 MCCARLEY UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16765 MCCARLEY UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16768 MCCARLEY, A. B. GOOD LUCK (SAN MIGUEL) H R E RENTAL COMPANY 05328 MCCARLEY, GEORGE GOOD LUCK (SAN MIGUEL) EXXCEL OPERATING COMPANY 04214 MCCARTY PEARSALL (AUSTIN CHALK) BELLOWS OPERATING CO., L. C. 13351 MCCELVEY UNIT LAS BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16348 MCCLANAHAN SALT FLAT GREAT PLAINS RESOURCES, INC. 08781 MCCLAUGHERTY A.W.P. (OLMOS) KEBO OIL & GAS, INC. 14149 MCCLAUGHERTY A.W.P. (OLMOS) TRIDENT CORPORATION 08641 MCCLAUGHERTY A EF EAGLEVILLE (EAGLE FORD-1) SWIFT ENERGY OPERATING, LLC 16314 MCCLAUGHERTY, I. O. A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 15027 MCCLAUGHERTY, L.S. -A- A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 08405 MCCLEESE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16667 MCCLELLAN -C- MINERVA-ROCKDALE CAN'T COMPLAIN OPERATING CO. 01209 MCCLELLAN /S & T/ MINERVA-ROCKDALE CAN'T COMPLAIN OPERATING CO. 01210 MCCLENDON, LOULA BELL ELAINE, W. (SAN MIGUEL) REGENCY ENERGY, INC. 10151 MCCLURE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15641 MCCOLLUM A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16430 MCCOLLUM, A. W. -A- DUNLAP NJP OIL & GAS LLC 08065 MCCONNELL BUCHANAN SPILLER, J.A. 03496 MCCONNELL, AFTON M., A BUCHANAN EAGLE FORD OIL CO., INC. 00145 MCCONNELL, AFTON, -B- LULING-BRANYON EAGLE FORD OIL CO., INC. 03588 MCCORMICK, T. Y. MINERVA-ROCKDALE SMITH, L. C. 01265 MCCORVEY BUCHANAN FOYORO ENERGY, LLC 11959 MCCORVEY -A- BUCHANAN FOYORO ENERGY, LLC 12019 MCCORVEY "C" BUCHANAN FOYORO ENERGY, LLC 13775 MCCORVEY, ALLAN BUCHANAN FOYORO ENERGY, LLC 12130 MCCORVEY, CLARENE BUCHANAN FOYORO ENERGY, LLC 13668 MCCOY PEARSALL (AUSTIN CHALK) CAG PETROLEUM CORP. 12571 MCCOY, JANICE PILGRIM (AUSTIN CHALK) ZANTANA RESOURCES 13434 MCCRORY, W. W. LULING-BRANYON GEOMEG ENERGY OPERATING CO., LLC 00991 MCCRORY, W. W. -B- LULING-BRANYON NORTHRIDGE EXPLORATION, INC. 01040 MCCRURY, C.T. STAPLES AERO, INC. 11683 MCCULLOUGH SOMERSET SOUTHWEST LOOP 1604, LTD. 11230 MCCURDY, LEE BUCHANAN SPILLER, J.A. 00138 MCDANIEL FAIRFIELD BAR M PETROLEUM CO. 09925 MCDANIEL, H. E. PALMER (POTH-B) J&J OIL 05774 MCDANIEL, H.E. PALMER (POTH SAND) LAKE CHEROKEE PRODUCTION, LLC 06084 MCDANIEL, H.E. PALMER (WILCOX) LAKE CHEROKEE PRODUCTION, LLC 06661 MCDANIEL, H.E. WARNCKE (CARRIZO) LAKE CHEROKEE PRODUCTION, LLC 06150 MCDANIEL, H.E. "B" SIESTA LAKE (BARTOSH) DAVISON, T. C. 06191 MCDONALD FAIRFIELD CALK, ROGER D. 08223 MCDONALD JOURDANTON, WEST (ESCONDIDO) JENEX PETROLEUM CORPORATION 06374 MCDONALD MARSHA GINCO OPERATING CO. 12356 MCDONALD -A- PEARSALL (AUSTIN CHALK) OFFSPRING WELL SALVAGE 12905 MCDONALD/COLEMAN MARSHA DIRNETT, INC. 13727 MCDONALD, COLLIN MARSHA L.O. OIL & GAS, LLC 13716 MCDONALD, MARTIN MARSHA DIRNETT, INC. 13726 MCDONALD, MARTIN MARSHA GINCO OPERATING CO. 01173 MCDONALD, MARTIN -A- MARSHA GINCO OPERATING CO. 10596


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MCDONALD, MARTIN -B- MARSHA GINCO OPERATING CO. 12407 MCDONALD, ROLAND & BRENDA SOMERSET BAR M PETROLEUM CO. 10765 MCDONALD, W.M. TOUCHSTONE (OLMOS -A-) OFFSPRING WELL SALVAGE 12001 MCDONOUGH UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16580 MCDONOUGH UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16583 MCDOWELL, E. T. CAMPANA, SOUTH TRIUM, LTD. 00180 MCELROY, C. E. FAIRFIELD GREAT PLAINS RESOURCES, INC. 02134 MCEVER KENS (SERPENTINE) COMANCHE WELL SERVICE CORP. 13392 MCEVER KENS (SERPENTINE) MG EXPLORATION, INC. 11703 MCEVER -A- KENS (SERPENTINE) R & S OIL PRODUCTION CO. 13248 MCEVER -E- KENS (SERPENTINE) COMANCHE WELL SERVICE CORP. 10564 MCEVER, C.D. -A- KENS (SERPENTINE) R & S OIL PRODUCTION CO. 07192 MCEVER, C.D. -B- KENS (SERPENTINE) R & S OIL PRODUCTION CO. 07193 MCEVER, C.D. -C- KENS (SERPENTINE) R & S OIL PRODUCTION CO. 08248 MCEVER,C.D. -D- KENS (SERPENTINE) THRALL OPERATING COMPANY, INC. 09068 MCFADIN UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16518 MCFADIN UNIT I DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16650 MCFADIN UNIT II DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16643 MCFARLANE PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 04704 MCFAULL MINERVA-ROCKDALE OMNI OIL & GAS, INC. 17199 MCGALL STRIPPER DALE-MCBRIDE GREAT PLAINS RESOURCES, INC. 06632 MCGARY, R. F. MINERVA-ROCKDALE ACE FIELD SERVICES, INC. 03550 MCGINTY-AVERY MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04409 MCGREGOR, A. F. MINERVA-ROCKDALE ACE FIELD SERVICES, INC. 03125 MCGREGOR, T. MINERVA-ROCKDALE NORTH TEXAS ENERGY,INC. 02876 MCKEAN-MPTM LULING-BRANYON CENTEX PIPE & EQUIPMENT, INC. 10142 MCKEAN, A J & J M B 8-H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14382 MCKEAN, A. J. & J. M. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01082 MCKEAN, AJ & JM H 4ST LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14544 MCKEAN, AJ & JM 5 HST LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14471 MCKEAN, DIX B 4H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14698 MCKEAN, M. MONKSFIELD (350 SAND) SOUTH SAM OPERATING COMPANY, LLC 08403 MCKEAN,A.J. & J.M. LULING-BRANYON (1700) TEXAS PETROLEUM INVESTMENT CO. 05947 MCKEAN,A.J.&J.M. -A- /137.50AC./ LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01083 MCKEE UNIT A EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 16483 MCKENZIE EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15587 MCKENZIE FOLEY UNIT A MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16830 MCKENZIE FOLEY UNIT B MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16587 MCKENZIE UNIT A EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15721 MCKENZIE UNIT F EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16495 MCKENZIE UNIT H EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16509 MCKENZIE UNIT I EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15950 MCKENZIE UNIT J EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15622 MCKENZIE UNIT L EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16283 MCKENZIE UNIT O EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15904 MCKINLEY-CARTER UNIT PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 13186 MCKINLEY, A.E. PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 13201 MCKINLEY, LELA PEARSALL (AUSTIN CHALK) KALER ENERGY CORP. 13861 MCKINLEY, LELA PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 04836 MCKINLEY, W. W. -A- PEARSALL (AUSTIN CHALK) KALER ENERGY CORP. 08756 MCKINLEY, W.W. "C" PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 11457


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MCKINNEY EAGLEVILLE (EAGLE FORD-1) HUGHES, DAN A. COMPANY, L.P. 16188 MCKINNEY KENS (SERPENTINE) R & S OIL PRODUCTION CO. 10386 MCKINNEY, C. H. & T. O. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01085 MCKNIGHT CARRIZO, S. (AUSTIN CHALK) DEMAREE, BILLIE L. 05650 MCKNIGHT -A- WINTER GARDEN (OLMOS) UHC PETROLEUM CORPORATION 05438 MCKNIGHT -B- WINTER GARDEN (OLMOS) DOUBLE EAGLE PETROLEUM CORP 05440 MCKNIGHT E. WINTER GARDEN (OLMOS) DOUBLE EAGLE PETROLEUM CORP 14161 MCKNIGHT-POWELL WILDCAT NEWFIELD EXPLORATION COMPANY 15074 MCKNIGHT, S.A., TRUSTEE PEARSALL (AUSTIN CHALK) TEXOKAN OPERATING, INC. 07948 MCKNIGHT, S.E. -B- CARRIZO, S. (OLMOS 2510) HAMILTON, CLAY 08185 MCLAUGHLIN, STEVEN FAIRFIELD MCLAUGHLIN, STEVEN J. 08255 MCLEAN PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14877 MCLEAN-BOWMAN -A- BIG WELLS (SAN MIGUEL) TRADITION RESOURCES OPER, LLC 04177 MCLEAN-BOWMAN -B- BIG WELLS (SAN MIGUEL) TRADITION RESOURCES OPER, LLC 04171 MCLEAN-BOWMAN -B- BIG WELLS(SAN MIGUEL, LO., EAST) TRADITION RESOURCES OPER, LLC 04267 MCLEAN-BOWMAN -C- GOOD LUCK (SAN MIGUEL) GARDNER OIL & GAS CO. 08368 MCLEAN-BOWMAN -D- GOOD LUCK (SAN MIGUEL) TEXOKAN OPERATING, INC. 08530 MCLEAN-BOWMAN "B" BIG WELLS (SAN MIGUEL) BOTASCH OPERATING, LLC 14961 MCLEAN, MARRS CHARLOTTE (NAVARRO) AVIGHNA ENERGY INC 03318 MCLEAN, MARRS H.G.L. (ELAINE SAND) THALMANN, DAVID VAC SERVICE INC 05753 MCLERRAN -B- MINERVA-ROCKDALE SHWJ OIL & GAS CO., INC. 09979 MCLERRAN, GRAHAM MINERVA-ROCKDALE UBETCO, INC. 13685 MCLERRAN, J.H. -A- MINERVA-ROCKDALE SHWJ OIL & GAS CO., INC. 09904 MCMAHAN, S. F. LULING-BRANYON NORTHRIDGE EXPLORATION, INC. 03738 MCMAHON LA VERNIA J.A.G. OIL & GAS 08026 MCMAHON, JOHN LA VERNIA J.A.G. OIL & GAS 05911 MCMAHON, JOHN "A" LA VERNIA J.A.G. OIL & GAS 06103 MCMANUS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17286 MCMANUS, D. C. AUSTIN PIERCE (AUSTIN CHALK) JET OIL PRODUCERS, INC. 04375 MCMANUS, D.C. MAG (AUSTIN CHALK) DELAWARE LAND CO. 10117 MCMILLAN HOG FARM -A- MINERVA-ROCKDALE FISHER, STANLEY NOEL 09736 MCMILLIAN HAMMOND (SAN MIGUEL NO 4) ALAMO OPERATING COMPANY, L. C. 16714 MCMULLEN SWD EAGLEVILLE (EAGLE FORD-1) HIGH SIERRA WATER-EAGLE FORD,LLC 16071 MCNEEL, W. W., JR. SPILLER DELRAY OIL, INC. 01914 MCOSKER SOMERSET EVERETT OIL 11138 MCOSKER SOMERSET GREAT PLAINS RESOURCES, INC. 10904 MCOSKER SOMERSET SEAGULL OPERATING CO., INC. 11244 MCOSKER -B- SOMERSET GREAT PLAINS RESOURCES, INC. 10905 MCOSKER -C- SOMERSET GREAT PLAINS RESOURCES, INC. 11388 MCRAE/ORYX KIEFER-BISSETT PEARSALL (AUSTIN CHALK) WOOLDRIDGE OIL & GAS 13469 MCVEA/WILSON PILGRIM (AUSTIN CHALK) FINALY RESOURCES LLC 12466 MCVOY, A. A. MINERVA-ROCKDALE OMNI OIL & GAS, INC. 01239 MCWILLIAMS HEIRS A DOERING RANCH (GEORGETOWN) VIRTEX OPERATING COMPANY, INC. 15060 MCWILLIAMS, CORY PEARSALL (AUSTIN CHALK) SEAGO PETROLEUM, INC. 01309 MCWILLIAMS, GLENN TAYLOR-INA CHICKEN COOP, INC., THE 06690 MEAD, J. SOMERSET WSM 08719 MEAD, MILTON O. SOMERSET WSM 10762 MEAD, R.A. SOMERSET WSM 10818 MEADOR, O.E. BIG FOOT OILEX INT'L INVESTMENTS, INC. 14094 MEADOWS, R.R. CROWN, E. (NAVARRO) CRYSTAL RESOURCES, INC 14052 MEDFORD LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16104


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MEDFORD UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16328 MEDFORD UNIT C LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16719 MEDINA IRR. FARMS -A- CHICON LAKE RLU OPERATING, LLC 00302 MEDINA SWD PEARSALL (AUSTIN CHALK) BRYMER, JACK CONTR. SERV. 13781 MEDINA UNIT EAGLEVILLE (EAGLE FORD-1) GEOSOUTHERN ENERGY CORPORATION 17152 MEDLEN, R. M. BUCHANAN SPILLER, J.A. 00137 MEDLIN, R. M. BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 00146 MEEK WAITZ UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16576 MEHAFFEY DIXIE (NAVARRO B) VICEROY PETROLEUM, LP 11822 MEHAFFEY GINNY JOHNSON (NAVARRO A) VICEROY PETROLEUM, LP 10388 MEHAFFEY, L.C. S GINNY JOHNSON (NAVARRO A) SELLERS LEASE SERVICE, INC. 12164 MEIER, VICTOR C CHICON LAKE HERBER, CARL R. 02072 MEIGS UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15946 MEINERS RANCH LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16119 MEINERS RANCH UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16126 MEINERS RANCH UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16473 MEINERS RANCH UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16184 MEINERS RANCH UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15997 MEISKE, ROY J. WILDCAT CUTRER ENERGY 11864 MEISKE, ROY J. NOACK CUTRER ENERGY 10503 MEISSNER LA VERNIA 3-L DRILLING 08081 MEISTER, JUDY C. LULING-BRANYON MEISTER, JUDY C. 07132 MELLENBRUCH SWD LOS ANGELES (4800) C&E PRODUCTION, LLC 15922 MELLENBRUCH UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16069 MELLENBRUCH, JULIA WASHBURN, NORTH (WILCOX -M- SD.) MELLENBRUCH, JULIA 04914 MELMS ESTATE PEARSALL (AUSTIN CHALK) JENEX PETROLEUM CORPORATION 07560 MELMS ESTATE PEARSALL (NAVARRO SAND) JENEX PETROLEUM CORPORATION 08013 MELTON, W. B. TAYLOR-INA BRIAR HOLLOW ENERGY COMPANY 03413 MELTON, W. B. TAYLOR-INA KLAEGER OPERATING COMPANY, LLC 02551 MELTON, W. B. TAYLOR-INA MITE ENERGY, LLC 01998 MENCHACA FAIRFIELD CALK OIL COMPANY 09765 MENCHACA FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 11939 MENCHACA FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 12596 MENCHACA FAIRFIELD MORE TEXAS OIL 12286 MENCHACA, A.G. FAIRFIELD GINCO OPERATING CO. 08740 MENDEZ UNIT SALT FLAT, WEST T. A. W. COMPANY 09518 MENDEZ, ENRIQUE KAYE (NAVARRO) JOHANSON OIL 01940 MENDOZA, LUCIANO DILLEY (AUSTIN CHALK) AMPAK OIL COMPANY 07687 MENELEY PEACH CREEK (AUSTIN CHALK) TDC ENGINEERING, INC. 12694 MENKE MINERVA-ROCKDALE CAP OPERATING INC. 07136 MENKE MINERVA-ROCKDALE 94 OPERATING, LP 16932 MENN UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17128 MERCER-TABOR UNIT LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 10427 MERCER, A.-MERCER, M., UNIT NO.1 LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 03619 MERCER, ALF LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01086 MERCER, ALF 2ST-H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14466 MERCER, F. M. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01087 MERCER, MATTIE LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01088 MERCER, MILLS LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01089 MERCER, W. F. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01090 MERCER, W. M. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01091


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MERCER, W.F. 2H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14595 MERCER, WILLIAM P. UNIT MAG (AUSTIN CHALK) LACY 03, LLC 05411 MERCER,W.F.-MERCER,W.M., UNIT#1 LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 03620 MERCIER EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16131 MERCIER-CARAWAY2 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17064 MERCIER-HENRY 1 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17162 MERCIER-HENRY 2 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17032 MERIT-RVS OIL UNIT PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 13211 MERIWETHER, HENNIE ETAL SALT FLAT (EDWARDS) L. S. K. L. OIL CO. 13980 MERIWETHER, HENNIE, ETAL SALT FLAT L. S. K. L. OIL CO. 01491 MERRITT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15451 MERRITT SOUTH UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15618 MERRIWEATHER UNIT LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 13764 MERRIWEATHER, JOHN LULING-BRANYON E & W OIL, INC. 01032 MERRIWEATHER, M. SALT FLAT B. J. P. OPERATING 01471 MERRIWETHER SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 15682 MERRIWETHER SOUTH SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 16127 MERRIWETHER, M. SALT FLAT LUTEX OIL, LTD. 01504 MESQUITE EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16288 METZGER, H.L. MONKSFIELD (350 SAND) A. N. MAC DIARMID CO. 09643 METZLER LULING-BRANYON GREAT PLAINS RESOURCES, INC. 08524 MEYER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15549 MEYER-B- TAYLOR-INA PARK AVENUE RESOURCES, INC. 08380 MH PLEASANTON SWD IMOGENE, EAST (EDWARDS LIME) ATASCOSA SWD, LP 17124 MIDDLE MCCOWEN EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15638 MIDDLETON PETROLEUM TAYLOR-INA MIDDLETON PETROLEUM LLC 03335 MIDDLETON PETROLEUM A TAYLOR-INA MIDDLETON PETROLEUM LLC 14219 MIDDLETON PETROLEUM B TAYLOR-INA MIDDLETON PETROLEUM LLC 14220 MIDDLETON-SACHS A UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 17144 MIDWAY ELAINE (SAN MIGUEL) LANE, LLOYD L. 14195 MIEARS -F- DALE-MCBRIDE MEB, LLC 11667 MIEARS, A. J. BUCHANAN SPILLER, J.A. 00151 MIERS, W. L. -B- JACK FLASH (ELLENBURGER) RANGE PRODUCTION COMPANY 14314 MIESCH - ST. KATRINA NINE YEAR (GEORGETOWN) STONEGATE OPERATORS, INC. 13937 MIGL SOMERSET MORE TEXAS OIL 10910 MILES ADDITION UNIT SALT FLAT OFFSPRING WELL SALVAGE 03060 MILLER EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16312 MILLER SASPAMCO P.S.N. PETROLEUM, INC. 13532 MILLER SOMERSET FIVE STAR OPERATING COMPANY 04028 MILLER BROS -B- JOURDANTON (RECKLAW) BRYMER CONTRACTING INCORPORATED 10380 MILLER BROS -B- JOURDANTON (RECKLAW) LISSNER, LINDY 09391 MILLER BROS. JOURDANTON (RECKLAW) RICKAWAY ENERGY, CORP. 08595 MILLER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16997 MILLER-DRINKARD PEARSALL (AUSTIN CHALK) WCS OIL & GAS CORPORATION 12802 MILLER-WAGNER "121-A" CROSS "S" RANCH (SAN MIGUEL) FLEUR-DAVID 13310 MILLER-WAGNER 121 ELAINE, N. (5250) FLEUR-DAVID 12622 MILLER, CECIL SOMERSET GREAT PLAINS RESOURCES, INC. 11147 MILLER, D. FAIRFIELD CALK OIL COMPANY 11361 MILLER, J. SOUTHTON SECOND CHANCE 10019 MILLER, M. SOMERSET GREAT PLAINS RESOURCES, INC. 01636 MILLER, RAND DARST CREEK (BUDA) AUSTIN OPERATING, LLC. 03850


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MILLER, RAND DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02753 MILLER, RAND DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 06323 MILLER, RAND -42- DARST CREEK (BUDA) E. T. OIL COMPANY 07889 MILLER, RAND TRACT 1 DARST CREEK (BUDA) AUSTIN OPERATING, LLC. 02717 MILLER, RAND TRACT 2 DARST CREEK (BUDA) AUSTIN OPERATING, LLC. 02718 MILLER, RAND TRACT 3 DARST CREEK (BUDA) GARRISON LTD. 02719 MILLER, RAND TRACT 4 DARST CREEK (BUDA) E. T. OIL COMPANY 13820 MILLS PANDORA, NW (AUSTIN CHALK) SCHAARON INTERNATIONAL ENERGY 12647 MILLS OIL UNIT PILGRIM (AUSTIN CHALK) DOMINION PRODUCTION COMPANY, LLC 15114 MILLS UNIT PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 13681 MILLS, E.C. HASSE (BUDA) ROBERTS & HAMMACK INC. 10231 MILLS, J. C. PEARSALL (AUSTIN CHALK) STRATCO OPERATING CO., INC. 04669 MILLS, J. C. -A- PEARSALL (AUSTIN CHALK) MOODY OIL CO. 04613 MILLS, J. T. KAYE (NAVARRO) GEOMEG ENERGY OPERATING CO., LLC 00774 MILLS, L. H. KAYE (NAVARRO) W.W. ENERGY 00772 MILLS, MARY ALICE PEARSALL (AUSTIN CHALK) THALMANN, DAVID VAC SERVICE INC 12416 MILTON HINES PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 16179 MILWARD, BYRON FAIRFIELD CALK, ROGER D. 07806 MINIX, K.W. FAIRFIELD K. V. D. OIL COMPANY 01838 MINOTEX/BENKE -B- CHARLOTTE, WEST MINERAL RESOURCES, INCORPORATED 13642 MINOTEX/BENKE 'A' CHARLOTTE, WEST MINERAL RESOURCES, INCORPORATED 00294 MIRELES, JESUS SOMERSET AMINEX USA, INC. 10858 MIRELES, JOHNNIE MINERVA-ROCKDALE PRICE OPERATING, LLC 02996 MITCHELL SOMERSET SEAGULL OPERATING CO., INC. 03547 MITCHELL TENNEY CREEK ALTA MESA SERVICES, LP 08521 MITCHELL "C" SOMERSET SEAGULL OPERATING CO., INC. 11137 MITCHELL "87" WILDCAT MEGAWEST ENERGY TEXAS CORP. 14982 MITCHELL B SOMERSET K.A. BARNES OIL & GAS OPER, LLC 15860 MITCHELL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15576 MITCHELL/QUINNEY UNIT STOCKDALE (CARRIZO) RICKAWAY ENERGY, CORP. 14307 MITCHELL, BILLY SOMERSET CIBOLO PRODUCTION, LLC 11294 MITCHELL, J. C. TENNEY CREEK GREAT PLAINS RESOURCES, INC. 03650 MKS SWD PEARSALL (AUSTIN CHALK) MKS SERVICES, LLC 17290 MMH WILDCAT CUTRER ENERGY 11863 MOBIL WHEELER A.W.P. (OLMOS) WAPITI OPERATING, LLC 12309 MOBILE MINERALS ESTATE PEARSALL (AUSTIN CHALK) SINGLETON, W. 09545 MOCZYGEMBA EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 15462 MOCZYGEMBA LYSSY (CARRIZO -D-) REXCOM, INC. 14060 MOCZYGEMBA A-436 EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16550 MOCZYGEMBA B EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16705 MOCZYGEMBA, C. MARCELINA CREEK (AUSTIN CHALK) PONTIAC OIL, INC. 08020 MOEBIUS, F. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 01728 MOEHNKE, CARL NOACK BLACK JACK SERVICES, L.L.C. 13997 MOEHRING MINERVA-ROCKDALE CHISHOLM OIL INVESTMENTS 10369 MOESKER EAGLEVILLE (EAGLE FORD-1) ARGENT ENERGY (US) HOLDINGS INC. 16693 MOLAK PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15111 MOLNOSKEY, JOE PILGRIM (AUSTIN CHALK) XOG OPERATING LLC 12057 MONARCH TENNEY CREEK CASTILLO OIL COMPANY LLC 11598 MONDIN UNIT WILDCAT PROVISION OIL, L.L.C. 17082 MONTAGUE CATTLE CO. CHEROKEE (AUSTIN CHALK, LO.) UNITED PRODUCTION CO., INC. 04499 MONTAGUE CATTLE CO. CHEROKEE (NAVARRO) SAN DIA PRODUCING COMPANY 04461


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MONTAGUE CATTLE CO. CHEROKEE (NAVARRO, LO.) SAN DIA PRODUCING COMPANY 08370 MONTE LENOSO FRO BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15623 MONTEITH EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16753 MONTEMAYOR BRISCOE RANCH (EAGLEFORD) PATTERSON ENERGY CORPORATION 15377 MONTEZ-DRYDEN CHICON LAKE RLU OPERATING, LLC 05644 MONTGOMERY UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16671 MONTGOMERY, DUDLEY ACLETO CREEK (POTH B) J&J OIL 10472 MONTGOMERY, DUDLEY NIXON SUMMIT ENERGY OPERATING, CO. 13589 MONTGOMERY, E. F. ACLETO CREEK (POTH A) DOMINION PRODUCTION COMPANY, LLC 10210 MONTGOMERY, E. F. SCOTTY (BARTOSH SAND) ALCOR ENERGY, INC. 10010 MONTGOMERY, E. F. -A- ACLETO CREEK (POTH SAND) LORENZ & BOSANKO 00005 MONTSANKO NIXON DOMINION PRODUCTION COMPANY, LLC 12318 MOODY, IVIE MINERVA-ROCKDALE EXCALIBUR E & P, LLC 01258 MOONEY, ISAAC DUNLAP BLACKMAR, JIM OIL OPERATOR 06388 MOORE MINERVA-ROCKDALE SHWJ OIL & GAS CO., INC. 01222 MOORE 2 NIXON THOMAS, MIKE 13291 MOORE-BUSH UNIT PEARSALL (AUSTIN CHALK) WCS OIL & GAS CORPORATION 12957 MOORE, CHALMERS LA VERNIA DONOCO OIL COMPANY 09018 MOORE, J. -A- DALE-MCBRIDE GALLERY PETROLEUM LLC 11643 MOORE, JEFF DALE-MCBRIDE GALLERY PETROLEUM LLC 04100 MOORE, JEFF DALE-MCBRIDE TRINIDAD PETROLEUM, INC. 11446 MOORE, MAGGIE LULING-BRANYON RODESSA OPERATING COMPANY 01033 MOORE, MAGGIE LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01092 MOORE, MAGGIE H 5ST LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14543 MOORE, MAGGIE 8H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14591 MOORE, MARLIN LULING-BRANYON GINCO OPERATING CO. 03912 MOORE, MARLIN LULING-BRANYON SPILLER, J. A. COMPANY 00984 MOORE, MARLIN -C- LULING-BRANYON SPILLER, J. A. COMPANY 03464 MOORE, MARLIN W. LULING-BRANYON GREAT PLAINS RESOURCES, INC. 00999 MOORE, MARLIN W. -A- LULING-BRANYON SPILLER, J. A. COMPANY 00985 MOORE, MARLIN W. -B- LULING-BRANYON SPILLER, J. A. COMPANY 02569 MOORE, MARLIN W. -F- LULING-BRANYON SPILLER, J. A. COMPANY 03520 MOORE, O. T. DALE-MCBRIDE HAZELETT OIL, INC. 04101 MOORE, R.V. PEARSALL (AUSTIN CHALK) COX & COX PRODUCTION CO. 13319 MOORE, S. H. BUCHANAN GREAT PLAINS RESOURCES, INC. 02139 MOORE, W. D. DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 04108 MOOS-COOK EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16631 MOOSE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17150 MORALES RANCH PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 13811 MORALES-TURNHAM UNIT PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 14513 MORALES, FELIX H. A.W.P. (OLMOS) XTO ENERGY INC. 08006 MORALES, FRED PEARSALL (NAVARRO SAND) BLACKBRUSH O & G, LLC 14269 MORALES, PEDRO PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 04872 MORALES, PEDRO PEARSALL (BUDA LIME) BLACKBRUSH O & G, LLC 14665 MORELAND PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15088 MORENO SALT FLAT, WEST KIDD PRODUCTION CO. 08835 MORGAN SOMERSET GREAT PLAINS RESOURCES, INC. 11194 MORGAN-EGGERS UNIT CHEROKEE (NACATOCH) BETRO, INC. 06245 MORGAN-KNIGHT UNIT CHEROKEE (AUSTIN CHALK, LO.) ERNEST OPERATING COMPANY 05767 MORGAN, ALVIN L. ET AL HICKORY CREEK (NAVARRO) SELLERS LEASE SERVICE, INC. 09458 MORGAN, MARY MILANO (PECAN GAP) VICEROY PETROLEUM, LP 09081


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MORGAN, T. ET AL A.W.P. (OLMOS) XTO ENERGY INC. 08934 MORIN, LEOPOLDO PEARSALL (AUSTIN CHALK) CENTEX DEVELOPMENT 12838 MORO CREEK BRISCOE RANCH (EAGLEFORD) NEWFIELD EXPLORATION COMPANY 15370 MORO CREEK RANCH CATCLAW (OLMOS) MCR OPERATING GROUP 08707 MORRILL BBJ, N. (WILCOX 5700) OMEGA ENERGY, LLC 15067 MORRILL GAS-X, N. (WALES) CATHEXIS OIL & GAS, LLC 14538 MORRILL GAS-X, SHALLOW (CARRIZO) CATHEXIS OIL & GAS, LLC 14781 MORRILL RANCH EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 16035 MORRILL UNIT A EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 16901 MORRILL UNIT B EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 17200 MORRIS NIXON TEXOKAN OPERATING, INC. 12568 MORRIS -B- SOMERSET GREAT PLAINS RESOURCES, INC. 11214 MORRIS -C- SOMERSET CLARK, G. A., TRUSTEE 11763 MORRIS -D- SOMERSET CRYSTAL RESOURCES, INC 11440 MORRIS -D- SOMERSET SEEKER OIL COMPANY, INCORPORATED 11027 MORRIS "C" SOMERSET SEEKER OIL COMPANY, INCORPORATED 12736 MORRIS TRUST PEARSALL (AUSTIN CHALK) STRATCO OPERATING CO., INC. 12704 MORRIS, BEULAH SOMERSET GREAT PLAINS RESOURCES, INC. 10508 MORRIS, BEULAH -A- SOMERSET SEEKER OIL COMPANY, INCORPORATED 11933 MORRIS, BEULAH -B- SOMERSET SEEKER OIL COMPANY, INCORPORATED 12154 MORRIS, C.A. LA VERNIA LOCKER RANCH 06158 MORROW PEARSALL (AUSTIN CHALK) D. AND Y. YUNK PRODUCTIONS 12789 MORROW, T. C. PEARSALL (AUSTIN CHALK) CRYSTAL RESOURCES, INC 04733 MORROW, VIOLA -A- MT. EDEN (CARRIZO-WILCOX, UP.) SELLERS LEASE SERVICE, INC. 14148 MOSES SALT FLAT AUSTIN OPERATING, LLC. 01472 MOSES & BAGGETT SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 14055 MOSES & BAGGETT -A- SALT FLAT B-3 OIL CO. 01483 MOSES & BAGGETT -B- SALT FLAT B-3 OIL CO. 01484 MOSES -A- SALT FLAT O.G.O. REFINING 03333 MOSES AND BAGGETT -A- SALT FLAT RUJO 01448 MOSES BAGGETT 'A' SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 17197 MOSES-WATSON SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 15871 MOSES, BONNIE SALT FLAT B-3 OIL CO. 03672 MOSES, C.V. SALT FLAT CASTILLO OIL COMPANY LLC 11625 MOSES, E. I. SALT FLAT B-3 OIL CO. 01505 MOSES, I. E. -A- SALT FLAT LULING O&G LLC 01452 MOSES, I. E.-MATTHEWS SALT FLAT DARST CREEK OIL COMPANY 02195 MOSES, WILLIE "A" SALT FLAT (EDWARDS) O.G.O. REFINING 13981 MOSIER, A. T. SALT FLAT EMBASSY WELL SERVICE, LLC 05966 MOSTYN EAGLEVILLE (EAGLE FORD-1) MODERN EXPLORATION, INC. 15273 MOSTYN SANER RANCH (SAN MIGUEL) PETROSAND ENERGY, INC. 15199 MOTEN GIDDINGS (AUSTIN CHALK-1) PRIDE ENERGY COMPANY 10290 MOVAC SWD SYSTEM SALT FLAT MOVAC SERVICE CO. OF ALICE 12735 MOY EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15487 MOY UNIT NIXON RR VENTURES LIMITED PARTNERSHIP 15110 MOY, R.F. SUTIL (BUDA) MARSHFIELD OIL & GAS, LLC 11831 MOY, R.F. SUTIL (REEF) MARSHFIELD OIL & GAS, LLC 06196 MUDD UNIT A EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 16825 MUECK, LAWRENCE MINERVA-ROCKDALE CARBONIT EXPLORATION, INC. 06788 MUELLER, FRITZ LA VERNIA TRANSIERRA EXPLORATION CORP. 00946 MUELLER, HULDA, ETAL GAS RIDGE R.D. OIL COMPANY 00641


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ MUENCHOW, A.E. LA VERNIA MIDSTATES CORPORATION 07414 MUENZLER MAG (AUSTIN CHALK) FIRST ROCK, INC. 09601 MUIL, CHARLES MUIL (CARRIZO SAND) JJRS INVESTMENTS INC. 01276 MUIL, CHAS. MUIL (QUEEN CITY SAND) JJRS INVESTMENTS INC. 01280 MUIR, JOHN UNIT NIXON SUNBURST, INC. 13846 MULLENS SOMERSET BRANDER, SAM H. 11597 MULLENS SOMERSET GREAT PLAINS RESOURCES, INC. 11028 MULLENS "GMK" SOMERSET GREAT PLAINS RESOURCES, INC. 11467 MULLINS -C- BEAR CREEK VIRTEX OPERATING COMPANY, INC. 10255 MULLINS -D- BEAR CREEK VIRTEX OPERATING COMPANY, INC. 10519 MULLINS -G- BEAR CREEK VIRTEX OPERATING COMPANY, INC. 11372 MUMME PARTNERS UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16291 MUMME RANCH EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15385 MUMME-CEARLEY B UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15991 MUMME-CEARLEY UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16033 MUMME-LA SALLE UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 17145 MUMME-REED UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 17146 MUMME-TCU UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16479 MUNGER, MILDRED FAIRFIELD K.A. BARNES OIL & GAS OPER, LLC 02010 MUNK & SAN ANTONIO COTTON MILL SOUTHTON SOUTHWEST BAILER PUMP CO. 01666 MUNOZ SOMERSET GREAT PLAINS RESOURCES, INC. 07439 MUNOZ, FAUSTINO CROWN, E. (NAVARRO) BAYSHORE OPERATING CORP., L.L.C. 14990 MUNSON RANCH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15489 MURIEL UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17235 MURPHY CHEROKEE (EAGLE FORD) SLAWSON EXPLORATION COMPANY, INC 16123 MURPHY GOTEBO KID (ANACACHO-SERPENTINE) PROPERTY DEVELOPMENT GROUP, INC. 14017 MURPHY RANCH GOTEBO KID (ANACACHO-SERPENTINE) DAWSEY OPERATING COMPANY 14024 MURPHY UNIT I MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16305 MURPHY UNIT II MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16319 MURRAY EAGLEVILLE (EAGLE FORD-1) VALENCE OPERATING COMPANY 16666 MURRAY -B- SOMERSET GREAT PLAINS RESOURCES, INC. 11031 MURRAY -C- SOMERSET FIVE STAR OPERATING COMPANY 11032 MURRY SOMERSET GREAT PLAINS RESOURCES, INC. 11029 MUSKOX EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17242 MUSSER, W.M. JR. FAIRFIELD GREAT PLAINS RESOURCES, INC. 07620 MUSTANG EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16408 MUSTANG RANCH BRISCOE RANCH (EAGLEFORD) BHP BILLITON PET(TXLA OP) CO 15266 MUSTANG RANCH C BRISCOE RANCH (EAGLEFORD) BHP BILLITON PET(TXLA OP) CO 15267 MYERS PENA CREEK (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 14848 MYERS PENA CREEK (SAN MIGUEL 2ND) ENERGYQUEST II, LLC 14608 MYERS, M. SOMERSET SALADO OIL CO. 10777 MYRTLE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16949 NADEN UNIT CROWN, E. (NAVARRO) BLACK SABLE ENERGY, LLC 16081 NAEGELI BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15323 NAEGELIN SOMERSET BLACKBIRD OIL & GAS, LLC. 05257 NAEGELIN, JOHN E. FAIRFIELD CALK, ROGER D. 07256 NAEGELIN, JOHN JR. SOMERSET CALK OIL COMPANY 11102 NAGEL, MILDRED ET AL UNIT PEACH CREEK (AUSTIN CHALK) PROGENIES OPERATING LLC 10604 NANCE UNIT PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14174 NANCE, O. N. PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, INC. 15154 NANCE, O. N. PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 15157


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ NANCY EDMUND UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16218 NATAL, DELORES G. FAIRFIELD PARK AVENUE RESOURCES, INC. 08017 NATALIE SWD CARRIZO, S. (OLMOS 2400) BOSQUE DISPOSAL SYSTEMS, LLC 15697 NAVARRO UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15969 NAVARRO UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15979 NAYLOR JONES UNIT 85 WEST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16570 NAYLOR JONES A EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15340 NAYLOR JONES B EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16819 NAYLOR JONES UNIT 105 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15692 NAYLOR JONES UNIT 106 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17303 NAYLOR JONES UNIT 107 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17309 NAYLOR JONES UNIT 141 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16871 NAYLOR JONES UNIT 155 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16724 NAYLOR JONES UNIT 42 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17301 NAYLOR JONES UNIT 43 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15795 NAYLOR JONES UNIT 44 EAST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16952 NAYLOR JONES UNIT 44 WEST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17322 NAYLOR JONES UNIT 48 EAST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16497 NAYLOR JONES UNIT 48W EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16499 NAYLOR JONES UNIT 59 EAST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16387 NAYLOR JONES UNIT 59 WEST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16410 NAYLOR JONES UNIT 60 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16766 NAYLOR JONES UNIT 63 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16158 NAYLOR JONES UNIT 70 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16709 NAYLOR JONES UNIT 86 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15741 NAYLOR JONES UNIT 95 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15342 NAYLOR JONES UNIT 96 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15477 NAYLOR JONES UNIT 98 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15586 NAYLOR JONES UNIT 99 EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15478 NBR EF EAGLEVILLE (EAGLE FORD-1) SWIFT ENERGY OPERATING, LLC 15830 NBRP EF EAGLEVILLE (EAGLE FORD-1) SWIFT ENERGY OPERATING, LLC 16482 NEAL PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 12970 NEAL PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 12781 NEEDMORE NEEDMORE (OLMOS) PLO'S OIL & GAS 05850 NEIHAUS-ISAACS MINERVA-ROCKDALE CAP OPERATING INC. 01252 NELIUS, J. BUCHANAN MEB, LLC 13336 NELL, EMMA PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 13629 NELSON PEACH CREEK (AUSTIN CHALK) FORD, DON H. & ASSOC. 15392 NELSON -C- PEARSALL (AUSTIN CHALK) CRYSTAL RESOURCES, INC 12353 NELSON "A" PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 13609 NELSON ZELLA EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16189 NELSON-DOEGE, FRANK LA VERNIA DOEGE, DONALD 07214 NELSON-FIELDER BUCHANAN FOYORO ENERGY, LLC 09891 NELSON, COURTNEY, ET AL WILDCAT ENDURO OIL COMPANY INC. 12241 NELSON, STANLEY DUNLAP BAIR'S LEASE SERVICE, INC. 08226 NENTWICH, HENRY FAIRFIELD GINCO OPERATING CO. 06809 NENTWICH, J. FAIRFIELD SIMCO OIL 10675 NENTWICH, JOSEPH H. FAIRFIELD SIMCO OIL 09622 NEUBAUER-STANUSH LA VERNIA, WEST (AUSTIN CHALK) G & K OPERATING, LLC 14270 NEUMAN BROTHERS, ET AL BEAR CREEK SCHAFER OIL CO., INC. 12295 NEUMAN, CLARA T. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 01900


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ NEUMANN TOUCHSTONE (OLMOS -A-) BLACK SABLE ENERGY, LLC 15208 NEUMANN, OTILLIE BIG FOOT NEUMANN OIL COMPANY 00112 NEUMANN, V. H. TAYLOR-INA EMERALD BAY ENERGY, INC. 01865 NEUMANN, V. H. -B- TAYLOR-INA LANDMEN OF TEXAS, INC. 01959 NEUSE UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16075 NEW WITTMAN PEARSALL (AUSTIN CHALK) RCLJ CONSTRUCTION, INC. 12731 NEW, J. L. SALT FLAT LULING O&G LLC 05002 NEW, J. L. ET AL SALT FLAT SAUR, JERRY 01523 NEW, J. W. ETAL SALT FLAT R & S OIL PRODUCTION CO. 05436 NEW, J.W. SALT FLAT B H & C OPERATING COMPANY, INC. 07381 NEW, MOLLIE SALT FLAT LULING O&G LLC 09348 NEW, W. H. SALT FLAT GAUGE OIL COMPANY 01467 NEWMAN EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15460 NEWMAN EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 17241 NEWMAN -A- SOMERSET SEAGULL OPERATING CO., INC. 10886 NEWMAN, C. SOMERSET SEAGULL OPERATING CO., INC. 10882 NEWMAN, LEE R. CHICON LAKE 3B RANCH 03772 NEWSOM PEARSALL (AUSTIN CHALK) AWP OPERATING COMPANY 16688 NEWSOM PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 12980 NEWSOM PEARSALL (AUSTIN CHALK) SANCHEZ OIL & GAS CORPORATION 17225 NEWSOM "A" PEARSALL (AUSTIN CHALK) EXPRESS OIL CO. 13078 NEWSOM "B" PEARSALL (AUSTIN CHALK) DOLPHIN PETROLEUM, LP 13196 NEWSOM-RIGGAN PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 12994 NEWSOM-RIGGAN "A" PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 13256 NEWTON, W. R. CHEROKEE (NAVARRO) MICRO OPERATING, INC. 05402 NEWTONVILLE EAST UNIT EAGLEVILLE (EAGLE FORD-1) OAK VALLEY OPERATING, LLC 16586 NEWTONVILLE NORTH UNIT EAGLEVILLE (EAGLE FORD-1) OAK VALLEY OPERATING, LLC 16538 NEWTONVILLE UNIT EAGLEVILLE (EAGLE FORD-1) OAK VALLEY OPERATING, LLC 15646 NHL BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15553 NHL UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16526 NHL UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16504 NICHOLAS, MARY NAT PEARSALL (AUSTIN CHALK) W.G. INVESTMENT 08913 NICHOLS A.W.P. (OLMOS) ESCONDIDO RESOURCES II, LLC 16003 NICHOLS BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15573 NICHOLS -B- SOMERSET GREAT PLAINS RESOURCES, INC. 10782 NICHOLS-THOMPSON C.J.P. (REEF) PRESSLY OIL INTEREST, INC. 09055 NICHOLS, G. ACLETO CREEK (POTH SAND) P.S.N. PETROLEUM, INC. 09319 NICHOLS, LUCY SOMERSET AMINEX USA, INC. 10856 NICHOLS, LUCY SOMERSET GREAT PLAINS RESOURCES, INC. 10874 NICHOLS, LUCY -A- SOMERSET GREAT PLAINS RESOURCES, INC. 10875 NICHOLSON PEARSALL (BUDA LIME) BLACKBRUSH O & G, LLC 15876 NICHOLSON UNIT PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 12754 NICOSON 68 WILDCAT APACHE CORPORATION 15161 NIESTROY EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 15640 NITE SALT FLAT GEOMEG ENERGY OPERATING CO., LLC 07734 NIXON FAIRFIELD CALK, ROGER D. 09389 NIXON NIXON PYOTE WELL SERVICE, LLC 16751 NIXON SUTTON (NAVARRO SAND) WEN-BE 06768 NIXON & DILLARD -E- FAIR RAY WOOLDRIDGE OIL & GAS 09082 NIXON -4- PEACH CREEK (AUSTIN CHALK) HOME PETROLEUM CORP. 08539 NIXON SWD NIXON TRINITY ENVIRONMENTAL SWD,L.L.C 16998


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ NIXON-DILLARD WILDCAT WALLIS ENERGY, INC. 13993 NIXON-DILLARD CHARLOTTE (EDWARDS LIME) J.P. OIL COMPANY, INC. 10075 NIXON-DILLARD PRUITT, S. (ESCONDIDO) MG EXPLORATION, INC. 09209 NIXON, B. K. -B- CHARLOTTE (NAVARRO) ENERVEST OPERATING, L.L.C. 03301 NIXON, T. BIG FOOT RICKAWAY ENERGY, CORP. 00041 NOACK BULLOH (NAVARRO) VICEROY PETROLEUM, LP 04418 NOACK GIDDINGS (AUSTIN CHALK-1) TEX-LEE OPERATING COMPANY 07490 NOACK -A- BULLOH (NAVARRO) VICEROY PETROLEUM, LP 08239 NOACK FARMS MINERVA-ROCKDALE ROCKDALE RESOURCES CORPORATION 16355 NOAH, T. R. BIG WELLS (SAN MIGUEL) DOUBLECHEK OPERATING 04237 NOAH, T.R. -A- GOOD LUCK (SAN MIGUEL) DOUBLECHEK OPERATING 06821 NOHRA BUCHANAN R & S OIL PRODUCTION CO. 07519 NOLTE DUBOSE (EDWARDS -A-) PPC OPERATING COMPANY LLC 03063 NORDIA GRANDE FIRST SHOT (AUSTIN CHALK) PROGENIES OPERATING LLC 14245 NORDIA GRANDE -A- FIRST SHOT (AUSTIN CHALK) PROGENIES OPERATING LLC 14260 NORDIA GRANDE "C" FIRST SHOT (AUSTIN CHALK) PROGENIES OPERATING LLC 14299 NORDIA GRANDE "D" FIRST SHOT (AUSTIN CHALK) PROGENIES OPERATING LLC 14298 NORRIS SMILEY (BUDA) DOMINION PRODUCTION COMPANY, LLC 15089 NORTH CHARLOTTE FIELD UNIT CHARLOTTE, NORTH ROLAND OIL COMPANY 03220 NORTH, HAL DUNLAP BLACKMAR, JIM OIL OPERATOR 07298 NORTH, MARY HEIRS DUNLAP LULING O&G LLC 07299 NORTHCUT A EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 16021 NORTHCUT B EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 16364 NORTHCUTT -A- SALT FLAT BAIR'S LEASE SERVICE, INC. 01527 NORTHCUTT -B- SALT FLAT BAIR'S LEASE SERVICE, INC. 01528 NORTHCUTT DYE SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 15696 NORTHCUTT, J. B. SALT FLAT BAIR'S LEASE SERVICE, INC. 01502 NORTHCUTT, J. B. -A- SALT FLAT BAIR'S LEASE SERVICE, INC. 05220 NORTHCUTT, J. B. -A- SALT FLAT LULING O&G LLC 04143 NORTHCUTT, J. L. SALT FLAT B. J. P. OPERATING 04134 NORTHCUTT, J. L. SALT FLAT M & J PRODUCTION COMPANY 01455 NORTHCUTT, J. L. SALT FLAT (EDWARDS) B. J. P. OPERATING 13979 NORTHCUTT, LULA SALT FLAT SAUR, JERRY 02810 NORTHCUTT, R.A. TENNEY CREEK ALTA MESA SERVICES, LP 08771 NORTHWAY PEARSALL (AUSTIN CHALK) TEKNA SYNERGY CORPORATION 13135 NORTON, R.W. BANDERA TANK, WEST (2500) WILLIAMSON OPERATING CO. 09958 NORWOOD, IRA CHICON LAKE PARK AVENUE RESOURCES, INC. 02610 NOWLIN, T. P. BIG FOOT JB OIL & GAS WELL SERVICE 00045 NOWLIN, T. P. DOBSON (NAVARRO SAND) JB OIL & GAS WELL SERVICE 14335 NOWOTNY UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16902 NUECES LAND & LIVESTOCK CO. -B- RODRIQUEZ (SHALLOW) TEXAS SECONDARY OIL CORPORATION 01437 NUECES LAND & LIVESTOCK CO. -E- RODRIQUEZ (SHALLOW) GGG OIL COMPANY, LTD. 01435 NUECES LAND & LIVESTOCK CO. "F" RODRIQUEZ (SHALLOW) GGG OIL COMPANY, LTD. 12906 NUNEZ, EMMA PEARSALL (AUSTIN CHALK) BAYSHORE OPERATING CORP., L.L.C. 13584 NUNLEY SACATOSA (GEORGETOWN) SHELL WESTERN E&P 14679 NUNLEY SACATOSA (GEORGETOWN) SHELL WESTERN E&P 14893 NWR EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15277 O. BORCHERS C EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 17226 O. BORCHERS D EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16439 O. BORCHERS E EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 17221 O.C. FEE SOMERSET GREAT PLAINS RESOURCES, INC. 11151


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ O'BRIEN -B- SOMERSET TRANSAMERICA ENERGY CORP. 11034 O'BRIEN -C- SOMERSET GREAT PLAINS RESOURCES, INC. 11035 O'BRIEN -D- SOMERSET PAISANO PRODUCTION, INC. 11103 O'BRIEN, E.M. SOMERSET GREAT PLAINS RESOURCES, INC. 11306 O'CONNOR PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 04615 O'NEAL MINERVA-ROCKDALE ROCKDALE PARTNERS, L.L.C. 01224 O'NEAL, E.H. -B- MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 08537 OAK ISLAND -A- SOMERSET EVERETT OIL 11191 OBANION, J. T., DR. SPILLER DELRAY OIL, INC. 01683 OBREGON PEARSALL (AUSTIN CHALK) CORE E & P CORP. 07149 OBREGON PEARSALL (AUSTIN CHALK) GOLDEN CHILD, INC. 13188 OBREGON SALT FLAT LULING WELL SERVICE 02970 OBREGON-A SALT FLAT LULING WELL SERVICE 07277 OCHS -BRS- FAIRFIELD LONE STAR OPERATING COMPANY 11615 OCHS -TPA- FAIRFIELD LONE STAR OPERATING COMPANY 11613 OCKER D.A. & R.L. MARCELINA CREEK (AUSTIN CHALK) XOG OPERATING LLC 07602 OCKER, D.A. & R.L MARCELINA CREEK (BUDA) XOG OPERATING LLC 07047 OEHLER MARSHA ENERGY EQUITY, INC. 07135 OFFER PEARSALL (AUSTIN CHALK) KINLAW OIL CORPORATION 13463 OFFIELD MARTINDALE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15717 OGSTON, SUSIE NICKEL (AUSTIN CHALK) ATLAS FUEL SUPPLY, LTD. 06126 OHLHAUSEN FAIRFIELD CRYSTAL RESOURCES, INC 06900 OLA-FLAKE MINERVA-ROCKDALE VICEROY PETROLEUM, LP 02872 OLD RIVER RANCH DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15560 OLDJAMIE OIL SOMERSET CALK, ROGER D. 10143 OLENICK, CLAUDE W. FLORESVILLE, S. (AUSTIN CHALK) WRD OIL, LLC 07265 OLIVEIRA EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16930 OLIVER UNIT WHIPLASH (AUSTIN CHALK) ALCOR ENERGY, INC. 13412 OLLE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16822 OLSON-TUCKER WHEELER (OLMOS) WAPITI OPERATING, LLC 09665 OLSON, L.H.&S.A. SASPAMCO CONSORT RESOURCES INC. 07886 OLSON, R. H. HIGHGROVE (AUSTIN CHALK) MEB, LLC 12701 OMBER H PEARSALL (AUSTIN CHALK) SEAGO PETROLEUM, INC. 13118 OPEILA A EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16680 OPPENHEIMER PEARSALL (AUSTIN CHALK) JENEX PETROLEUM CORPORATION 12716 OPPENHEIMER A BRISCOE RANCH (EAGLEFORD) BLACKBRUSH O & G, LLC 16520 OPPENHEIMER A PEARSALL (BUDA, S.) BLACKBRUSH O & G, LLC 16210 OPPENHEIMER UNIT PEARSALL (BUDA, S.) BLACKBRUSH O & G, LLC 16758 OPPENHEIMER-CALVERT UNIT PEARSALL (BUDA, S.) BLACKBRUSH O & G, LLC 14398 OPPENHEIMER, JESSIE D. BIG FOOT JENEX PETROLEUM CORPORATION 00096 ORGAIN HEIRS CEDAR CREEK GEOMEG ENERGY OPERATING CO., LLC 13208 ORR, ROBERT BULLOH (NAVARRO) VICEROY PETROLEUM, LP 04479 ORR, ROBERT C. BULLOH (NAVARRO) VICEROY PETROLEUM, LP 09325 ORTA JOURDANTON (GEORGETOWN) EOG RESOURCES, INC. 14401 ORTMAN SOUTHTON OILEX INT'L INVESTMENTS, INC. 09611 ORTS, H. P. A-4 UNIT MAG (AUSTIN CHALK) LACY 03, LLC 05597 ORTS, H. P. B MAG (AUSTIN CHALK) LACY 03, LLC 12795 ORTS, H.P. -B- MAG (AUSTIN CHALK) LACY 03, LLC 05026 OSAGE-FORSTER CARLOTA (GEORGETOWN) MISSION RIVER SYSTEMS, INC. 12475 OSAGE-RAMIREZ CARLOTA (GEORGETOWN) MAVERICK OSAGE OIL COMPANY, INC. 12039 OSBORNE, ROBERT NIXON ALCOR ENERGY, INC. 13831


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ OSPREY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17246 OSTEEN, W. N. DALE-MCBRIDE HAZELETT OIL, INC. 04102 OTTO EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15450 OTTO LIEKE FASHING (EDWARDS LIME -B-) EXCALIBUR E & P, LLC 16752 OTTO UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16612 OTTO, FRIEDA KAYE (NAVARRO) QUEST RESEARCH & DEV. CORP. 06275 OTTO, FRIEDA E. KAYE (NAVARRO) RAINER ENERGY, INC. 10667 OTTO, MAX WEIGANG ACOCK/ANAQUA OPERATING CO., LP 01771 OVERTON, EARL COOKSEY MGR RESOURCES 06443 OWENS, VAUGHN AND WILMA MILBUR (NAVARRO) HOUSTON PETROLEUM COMPANY 14567 OYERVIDES UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15399 OZEMA MARTIN HEIRS (ESCONDIDO) VIRTEX OPERATING COMPANY, INC. 10237 P-H UNIT PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 15014 PACHECO, JOEL G. JR. FAIRFIELD GENIE OIL COMPANY "A" 09797 PAGE CHEROKEE (NAVARRO) ERNEST OPERATING COMPANY 11342 PAGE, HOLLAND LULING-BRANYON BOB-KAT OIL CO. 02384 PAJARITO EAGLEVILLE (EAGLE FORD-1) EF ENERGY, L.L.C. 15740 PAJARITO UNIT A EAGLEVILLE (EAGLE FORD-1) EF ENERGY, L.L.C. 16933 PALM ENTERPRISE, INC. PALMERAS (OLMOS) TEXOKAN OPERATING, INC. 04348 PALM, EDWIN H. FAIRFIELD PMP 09354 PALMER BROTHERS LEMING (2934 SAND) OILEX INT'L INVESTMENTS, INC. 07352 PALMER 28 AC. LYTTON SPRINGS CHEATHAM, JOE R. OIL CO. 01169 PALMER, LUCY, 28 AC. LYTTON SPRINGS CHEATHAM, JOE R. OIL CO. 01170 PALMERAS -A- PALMERAS (OLMOS) TEXOKAN OPERATING, INC. 10549 PALMERAS,INC.FEE PALMERAS (OLMOS) LITTLE OIL & GAS, INC. 09961 PALO ALTO SOMERSET FIVE STAR OPERATING COMPANY 11037 PALOMA BRISCOE RANCH (EAGLEFORD) NEWFIELD EXPLORATION COMPANY 15308 PALOMA CHITTIM (AUSTIN CHALK) NEWFIELD EXPLORATION COMPANY 14755 PALOMA CHITTIM (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 14623 PALOMA PRICKLY PEAR (GLEN ROSE) NEWFIELD EXPLORATION COMPANY 14793 PALOMA "E" CHITTIM (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 14301 PALOMA "F" CHITTIM (GEORGETOWN) NEWFIELD EXPLORATION COMPANY 14267 PALOMA E CHITTIM (AUSTIN CHALK) NEWFIELD EXPLORATION COMPANY 15112 PALOMA-HORTON A.W.P. (OLMOS) WAPITI OPERATING, LLC 12881 PALOMA-HORTON QUINTANILLA A.W.P. (OLMOS) WAPITI OPERATING, LLC 14345 PALOMINO LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15960 PALS RANCH INDIO TANKS (PEARSALL) BLACKBRUSH O & G, LLC 17300 PALS RANCH PEARSALL (AUSTIN CHALK) SIEN OPERATING COMPANY, LLC 12379 PALS RANCH PEARSALL (BUDA LIME) BLACKBRUSH O & G, LLC 15068 PANCOAST, R.F. COOKSEY COVER, DONALD R. 06096 PAPE, CHARLES SOMERSET RAINER ENERGY, INC. 12467 PAPE, LOUIS P. SOMERSET RAINER ENERGY, INC. 11200 PARAMORE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17106 PARISH, R. A. DARST CREEK (BUDA) GARRISON LTD. 02764 PARISH, R. A. NCT-1 DARST CREEK (BUDA) SIGNAL OIL AND GAS COMPANY 02760 PARK, C. R. STOCKDALE (POTH A) P.S.N. PETROLEUM, INC. 05406 PARK, C.R. STOCKDALE (CARRIZO) J&J OIL 05869 PARKER, DELTON MINERVA-ROCKDALE HILL, NATHANIEL ALLEN 10089 PARKER, G.K. GOOD LUCK (SAN MIGUEL) PRESTIDGE, SHERYL 06244 PARKER, H.L. JR. SMILEY, SE (AUSTIN CHALK) KIDD PRODUCTION CO. 07478 PARKER, HOBSON NIXON KIDD PRODUCTION CO. 13787


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ PARKER, MARY ET AL PILGRIM (AUSTIN CHALK) ONE MADISON ENERGY, INC. 13429 PARKS ET AL PILGRIM (AUSTIN CHALK) CRYSTAL RESOURCES, INC 13436 PARR EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 15591 PARR LITTLE NEW YORK SELLERS LEASE SERVICE, INC. 08546 PARSONAGE UNIT WAELDER, SOUTH (ESCONDIDO) PREMIUM EXPLORATION COMPANY 11459 PARSONS SOMERSET MATLA INC. 11129 PATRICIA PEACH CREEK (AUSTIN CHALK) TOLTECH OIL & GAS, INC.-HOUSTON 11776 PATRICK MOCZYGEMBA EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16226 PATRICK MOCZYGEMBA B EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16531 PATRICK MOCZYGEMBA C EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16827 PATRICK MOCZYGEMBA D EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16828 PATRICK WEST BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 15326 PATRICK, WILLIAM PEARSALL (AUSTIN CHALK) PONTIAC OIL, INC. 12437 PATTERSON DUBOSE EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17016 PATTERSON/NEALE PEARSALL (AUSTIN CHALK) WESTERN FIELD EXPLORATION, INC. 12628 PATTESON EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16247 PATTESON , J.D. "B" PATTESON (CARRIZO) ACOCK OPERATING LIMITED 12648 PATTESON ESTATE PATTESON (CARRIZO) ACOCK OPERATING LIMITED 02280 PATTESON J. D. "C" PATTESON (CARRIZO) ACOCK OPERATING LIMITED 13160 PATTESON, J.D. "D" PATTESON (CARRIZO) ACOCK OPERATING LIMITED 13552 PATTILLO NIXON KIDD PRODUCTION CO. 06555 PATTON LULING-BRANYON S & T SALVAGE 03482 PATTON SALT FLAT RUJO 03089 PATTON, H.C. SOMERSET YORK, WILLIAM A. 10889 PATTON, J. O. LULING-BRANYON EAGLE FORD OIL CO., INC. 01115 PATTON, J. O., EST. LULING-BRANYON SHEFTS & SHEFTS, INC. 02493 PAVELKA PEARSALL (AUSTIN CHALK) GULF COAST ACQUISITIONS CO. L.C. 13660 PAVELKA UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16140 PAWELEK MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 14785 PAWELEK MOY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15479 PAWELEK UNIT MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 14197 PAWELEK, L. J., ET UX PAWELEK (AUSTIN CHALK) FIRST ROCK, INC. 04729 PAYNE BULLOH (POTH) CADDO ENERGY CO., INC. 05334 PAYNE MILBUR (NAVARRO) AUSTIN RIDGE ENERGY CORPORATION 04352 PAYNE, JOHN LA VERNIA DOEGE, DONALD 07116 PAYSINGER, W. H. INDEPENDENCE (STRAY 3350) BRIDGER OIL INC. 03893 PC-Q EF EAGLEVILLE (EAGLE FORD-1) SWIFT ENERGY OPERATING, LLC 15261 PEACH ORCHARD UNIT NO. I FAIRFIELD CRYSTAL RESOURCES, INC 09134 PEACOCK BLUE TIE AFFAIR (W-15) WYNN-CROSBY OPERATING, LTD. 14847 PEACOCK MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16681 PEARCE PEARSALL (AUSTIN CHALK) LEEXUS OIL LLC 15026 PEARMON, J. M. LULING-BRANYON EAGLE FORD OIL CO., INC. 01135 PEARSALL PARTNERS/GLG MCDERMAND PEARSALL (AUSTIN CHALK) PETRO-HUNT, L.L.C. 12783 PEARSALL PARTNERS/GLG W.A.CARNES PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 12439 PEARSALL SWD TOALSON (OLMOS -A-) HIGH SIERRA WATER-EAGLE FORD,LLC 15578 PEARSALL-ADAMS PEARSALL (AUSTIN CHALK) LEASE ROLLOVER OPERATIONS, INC. 12728 PEARSALL, T J EAGLEVILLE (EAGLE FORD-1) BLACKBRUSH O & G, LLC 15545 PEARSON, R.L. -A- PIERSON (SERPENTINE 1500) GREAT PLAINS RESOURCES, INC. 12103 PEARSON, W.T. MINERVA-ROCKDALE ALLIED OPERATING TEXAS, LLC 10045 PEARSON, W.T. MINERVA-ROCKDALE BABCO OIL & GAS, LLC 07877 PECAN TREE SWD ELAINE, W. (SAN MIGUEL) SELECT ENERGY SERVICES, LLC 15304


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ PECK PEACH CREEK (AUSTIN CHALK) OKY INVESTMENTS, INC. 10616 PECK, H.J. PEACH CREEK (AUSTIN CHALK) OKY INVESTMENTS, INC. 07137 PEELER A.W.P. (OLMOS) SV ENERGY COMPANY, LLC 16373 PEELER CROWTHER (JAMBERS) KALER ENERGY CORP. 14636 PEELER CROWTHER (5600) KALER ENERGY CORP. 14678 PEELER INDIO TANKS (PEARSALL) MURPHY EXPL. & PROD. CO. - USA 17177 PEELER JOURDANTON (CARRIZO SAND) PULLIN LEASE SERVICE, INC. 14717 PEELER JOURDANTON (QUEEN CITY) PULLIN LEASE SERVICE, INC. 14271 PEELER JOURDANTON (RECKLAW) PULLIN LEASE SERVICE, INC. 14758 PEELER LEFT HOOK (WALES) AMERICO ENERGY RESOURCES, LLC 14573 PEELER LEFT HOOK (WRIGHT) AMERICO ENERGY RESOURCES, LLC 14558 PEELER LEFT HOOK (WRIGHT) ELLSWORTH, H. P. O&G PROPERTIES 15148 PEELER RENSHAW (CARRIZO) FINGER OIL & GAS, INC. 15147 PEELER SOPHIA (WILCOX CONSOL.) HAWTHORN ENERGY PARTNERS, LLC 14715 PEELER WRIGHT HOOK (WALES SAND) AMERICO ENERGY RESOURCES, LLC 14445 PEELER WRIGHT HOOK (WRIGHT SAND) AMERICO ENERGY RESOURCES, LLC 14440 PEELER WRIGHT HOOK (WRIGHT SAND) ELLSWORTH, H. P. O&G PROPERTIES 15209 PEELER C SOPHIA (WILCOX CONSOL.) HAWTHORN ENERGY PARTNERS, LLC 14540 PEELER EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16338 PEELER MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16507 PEELER RANCH EAGLEVILLE (EAGLE FORD-1) ARGENT ENERGY (US) HOLDINGS INC. 15472 PEELER RANCH EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15251 PEELER RANCH EAGLEVILLE (EAGLE FORD-1) SHALE HUNTER, LLC 16559 PEELER RANCH MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16864 PEELER RANCH UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15252 PEELER RANCH WEST EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15256 PEELER SMEC A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17028 PEELER UNIT I MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16647 PEELER, A.M. PEELER, N. (WILCOX 4500) L & L INVESTMENTS 05891 PEELER, GRAVES CROWTHER (JAMBERS) BRYMER CONTRACTING INCORPORATED 14033 PEELER, GRAVES PEELER RANCH (WALES) BRYMER CONTRACTING INCORPORATED 14059 PEIKERT -AD- SALT FLAT, WEST LULING O&G LLC 12253 PEIKERT -B- SALT FLAT, WEST LULING O&G LLC 11464 PEIKERT -C- SALT FLAT, WEST LULING O&G LLC 10339 PEIKERT -DA- SALT FLAT, WEST LULING O&G LLC 12252 PEIKERT -F- SALT FLAT, WEST LULING O&G LLC 07226 PEIKERT -H- SALT FLAT, WEST LULING O&G LLC 06903 PEIKERT -N- SALT FLAT, WEST LULING O&G LLC 06906 PEIKERT -P- SALT FLAT, WEST LULING O&G LLC 07623 PEIKERT "A" SALT FLAT LULING O&G LLC 06470 PEIKERT "E" SALT FLAT, WEST LULING O&G LLC 09710 PEIKERT "FA" SALT FLAT, WEST LULING O&G LLC 13828 PEIKERT-C2- SALT FLAT, WEST LULING O&G LLC 08825 PEIKERT-G- SALT FLAT, WEST LULING O&G LLC 07648 PEIKERT, QUINN SALT FLAT LULING O&G LLC 05493 PENA EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16575 PENA LOS ANGELES (4800) SENDERO SERVICES, INC 16322 PENA MARCELINA CREEK (AUSTIN CHALK) XOG OPERATING LLC 13153 PENA A EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 17239 PENA CREEK I BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15375 PENA CREEK III BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15311


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ PENA CREEK III UNIT A EAGLEVILLE (EAGLE FORD-1) EXCO OPERATING COMPANY, LP 15360 PENA CREEK III UNIT C BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15423 PENA CREEK III UNIT E BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15554 PENA CREEK UNIT PENA CREEK (OLMOS 2400) ENERGYQUEST II, LLC 12022 PENA CREEK UNIT PENA CREEK (SAN MIGUEL 3RD) ENERGYQUEST II, LLC 06557 PENA-BUTTS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16059 PENA-PENA LOS ANGELES (4800) SENDERO SERVICES, INC 16037 PENA-WINFIELD A UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16088 PENA, C. PEARSALL (AUSTIN CHALK) MATADOR PRODUCTION COMPANY 05004 PENA, CRUZ WINTER GARDEN (OLMOS) DOUBLE EAGLE PETROLEUM CORP 06091 PENFOLD WINTER GARDEN, E. ( SAN MIGUEL) BETA OIL CORPORATION 08997 PENNINGTON UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16425 PENSHORN, HARVEY G. LA VERNIA SEACO PRODUCTION 10631 PENSHORN, THEKLA LA VERNIA J.A.G. OIL & GAS 11924 PENSHORN, THEKLA LA VERNIA LIBERTY HEAD PETROLEUM, INC. 00875 PENSHORNE, A. LA VERNIA RAMPAGE EXPLORATION, INC. 06885 PERALES SOMERSET PERALES, EUGENE E.-EVELYN T. 10828 PERDIZ UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16697 PERKINS EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15427 PERKINS OIL UNIT PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 13263 PERKINS, JESSIE PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 10315 PERLITZ-WRANGLER PILOSA (OLMOS) REDROCK EXPLORATION, INC 14677 PERLITZ-WRANGLER PILOSA, EAST (2ND SAN MIGUEL) CENTAUR EXPLORATION LLC 14621 PERLITZ, JONSSON GRIFFIN PILOSA, EAST (2ND SAN MIGUEL) ESPADA OPERATING LLC 07764 PERRIGO-WITHERSPOON A UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16194 PERRIGO-WITHERSPOON B UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16220 PERRY MINERVA-ROCKDALE CARTER, SHIRLEY OIL CO 09693 PERRY SOMERSET K.A. BARNES OIL & GAS OPER, LLC 10932 PERRY "C" MINERVA-ROCKDALE C-D OIL COMPANY, INC. 14653 PERRY, D. H. MILBUR (NAVARRO) THREE FORKS OPERATING CO, LLC 04129 PERRY, E. F. TENNEY CREEK GEOMEG ENERGY OPERATING CO., LLC 05274 PERRY, E. F., ETAL TENNEY CREEK GINCO OPERATING CO. 03522 PERRY, J. O. SALT FLAT GAUGE OIL COMPANY 02175 PERRY, P. H. PECAN GAP (5050) HOUSTON PETROLEUM COMPANY 14645 PERRY, P. H. -A- MILBUR (NAVARRO) HOUSTON PETROLEUM COMPANY 04293 PERRY, P. H. -A- MINERVA-ROCKDALE CARTER, SHIRLEY OIL CO 09114 PERRY, P. H., JR. MILBUR, N. (WILCOX 2660) THREE FORKS OPERATING CO, LLC 03876 PERRY, P.H. JR. PECAN GAP (5050) HOUSTON PETROLEUM COMPANY 09883 PESL PILCHER (AUSTIN CHALK) D & S PETROLEUM, INC. 12926 PETER EAGLEVILLE (EAGLE FORD-1) 1776 ENERGY OPERATORS, LLC 15495 PETERS FAMILY TRUST (ALLOCATION) EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16163 PETERS UNIT B ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16090 PETERS UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16200 PETERS, M. C. & E. E. STACY (OLMOS -A-) RICKAWAY ENERGY, CORP. 01700 PETERS, VICTOR F. JR. FAIRFIELD AVM OIL ENTERPRISES 07883 PETRO PARDS BRISCOE RANCH (EAGLEFORD) SANCHEZ OIL & GAS CORPORATION 16031 PETTIT PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 07815 PETTIT, EDWARD YORK ET AL UNIT FAIRFIELD GENIE OIL COMPANY "A" 08945 PETTY, O.S. CATARINA, SW (SAN MIGUEL,OIL) PETROPOINT ENERGY OPERATING, LLC 14386 PEVEHOUSE, ET AL MINERVA-ROCKDALE ENDURO OIL COMPANY INC. 12192 PFEIFFER PEARSALL (AUSTIN CHALK) WCS OIL & GAS CORPORATION 14262


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ PFEIL KHAN (AUSTIN CHALK) LUCAS ENERGY, INC. 14077 PFEIL NIXON STATIA ENTERPRISES, INC 13791 PFIEFFER, M. LITTIG MINT ENERGY, INC. 08100 PFLUGER WASHBURN, NORTH (WILCOX -M- SD.) SUTTON PRODUCING CORP. 14046 PFLUGER UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15547 PFLUGER, W. E. WASHBURN, NORTH (WILCOX -M- SD.) PRECISION PETRO CORP. 02378 PFLUGER, W. E., -B- WASHBURN, NORTH (WILCOX -M- SD.) PRECISION PETRO CORP. 02582 PHEASANT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16256 PHILLIP C. JAMES ET AL UNIT PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 13519 PHILLIPS MINERVA-ROCKDALE ROCKDALE PARTNERS, L.L.C. 01254 PHILLIPS, GERALD B. WHERRY & GREEN (REKLAW) KENTEX PETROLEUM INC. 01781 PHZ UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15550 PICKENS PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15667 PICKENS SOMERSET PETROSAURUS, INC. 11039 PICKENS -C- SOMERSET GREEN STAR 09494 PICKENS RANCH PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15800 PICKENS RANCH PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 13647 PICKENS ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15711 PICKENS, J.Z. ET AL SOMERSET CALK OIL COMPANY 08360 PICKENS, JOHN Z. III SOMERSET GREAT PLAINS RESOURCES, INC. 06472 PICKENS, STAGE SOMERSET CRYSTAL RESOURCES, INC 11040 PICKENS, STAGE -A- SOMERSET FIVE STAR OPERATING COMPANY 11650 PICKENS, STAGE -B- SOMERSET CRYSTAL RESOURCES, INC 11651 PICKENS, STAGE -C- SOMERSET FIVE STAR OPERATING COMPANY 10950 PICKENS, STAGE -D- SOMERSET GREAT PLAINS RESOURCES, INC. 11076 PICKENS, STAGE -E- SOMERSET GREAT PLAINS RESOURCES, INC. 11077 PICKENS, STAGE -F- SOMERSET CRYSTAL RESOURCES, INC 11041 PICKWILL PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 17276 PIEKERT -EQ- SALT FLAT, WEST LULING O&G LLC 07177 PIENIAZEK, GEORGE COOKSEY DOEGE, DONALD 10650 PIENIAZEK, TEDDY JONES B & B OIL DEVELOPMENT 08753 PIENIAZEK, WALTER COOKSEY KOCH, I. ERNEST 05732 PIERCE FAIRFIELD 338 OIL & GAS, INC. 17181 PIERCE, J. M., ESTATE SPILLER GINCO OPERATING CO. 01682 PIERCE, JAMES TAYLOR-INA GHISELLI OIL, INC. 03077 PIERCE, JOHN R. DUNLAP BAIR'S LEASE SERVICE, INC. 09936 PIERCE, JOHN R. DUNLAP PTO OIL & GAS, LLC 03877 PIERCE, JOHN R. -B- DUNLAP GINCO OPERATING CO. 04261 PIERCE, JOHN R. "B" DUNLAP BAIR'S LEASE SERVICE, INC. 13913 PILCHER LYTTON SPRINGS D & S PETROLEUM, INC. 12464 PILCHER/EVANS LYTTON SPRINGS D & S PETROLEUM, INC. 12633 PILGRIM, FLOYD SOMERSET PETROSAURUS, INC. 10867 PINKY SUN T S H (OLMOS) SWIFT ENERGY OPERATING, LLC 14942 PINTAIL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15962 PISTOL UNIT BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15330 PITMAN UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16417 PITMAN UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16489 PLANT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17282 PLEASANTON, E. (ESCONDIDO UNIT) PLEASANTON, E. (ESCONDIDO) BRYMER CONTRACTING INCORPORATED 16039 PLEASANTON, E. (ESCONDIDO UNIT) PLEASANTON, E. (ESCONDIDO) EAGLE FORD OIL CO., INC. 04491 PLECKER EZZELL SAN CAJO OIL COMPANY 00570


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ PLOCEK UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15758 PLOCEK UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15957 PLOCH SASPAMCO SR OIL AND GAS, L.L.C. 13058 PLOCH, MARY R. TRUST SASPAMCO SR OIL AND GAS, L.L.C. 14013 PLOEGER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17313 PLUM CREEK TENNEY CREEK BENNETT, PATRICIA 11768 POAGE SOMERSET GREAT PLAINS RESOURCES, INC. 11660 POCO MAS RANCH UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16209 POCO MAS RANCH UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16903 POCO MAS RANCH UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16936 POCO MAS RANCH UNIT E DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16626 POCO MAS RANCH UNIT F DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16167 POENISCH EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15556 POENITZ, HELMUT LA VERNIA B. & L. OIL COMPANY 00876 POENITZ, HELMUT LA VERNIA J.A.G. OIL & GAS 03052 POERNER, A. FAIRFIELD KLAEGER OPERATING COMPANY II,LLC 06203 POERNER, LOUISE FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 07327 POGUE CROWN, E. (NAVARRO) CRYSTAL RESOURCES, INC 14051 POGUE, C.P. FAIRFIELD OILEX INT'L INVESTMENTS, INC. 08097 POLAN EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 15516 POLASEK, ALLEN SOMERSET BAR M PETROLEUM CO. 11205 POLOCEK PEARSALL (AUSTIN CHALK) CARRIZO EXPLORATION, INC. 12955 POLOCEK ET AL PEARSALL (AUSTIN CHALK) OFFSPRING WELL SALVAGE 12851 POLZER CHEROKEE (AUSTIN CHALK, LO.) SLAWSON EXPLORATION COMPANY, INC 16500 POLZER, EUGENE CHEROKEE (NAVARRO) VICEROY PETROLEUM, LP 05607 POOLE SOMERSET TEJONES OPERATING CORPORATION 11686 POOLEY, A. L. SPILLER DELRAY OIL, INC. 01693 POPE FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 07853 POPE, B. J. UNIT KELLY LYNNE (ANACHCHO) LAMBECK PETROLEUM, LLC 11880 POPE, B. J. UNIT STOCKDALE, EAST (CHALK, LOWER) LAMBECK PETROLEUM, LLC 11916 POPE, W.I. SALT FLAT GAUGE OIL COMPANY 12173 PORTER, FLOYD R. PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 12741 POSEY DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02761 POSEY DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02802 POSEY NIXON BJT OIL COMPANY, INC 12138 POSEY NIXON DULA PRODUCTION, LLC 15193 POSEY & BAKER (CHEVRON) DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02726 POSEY & BAKER (CHEVRON) DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02780 POSEY BAKER 3H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14602 POSEY UNIT NIXON P.S.N. PETROLEUM, INC. 13575 POSEY, W. R. -B- DARST CREEK (BUDA) AUSTIN OPERATING, LLC. 02816 POSEY, W.R. -B- DARST CREEK (BUDA) AUSTIN OPERATING, LLC. 08001 POULTRY SALT FLAT KIDD PRODUCTION CO. 08503 POUND, W. E. CHARLOTTE (NAVARRO) ENERVEST OPERATING, L.L.C. 03302 POWELL BRISCOE RANCH (EAGLEFORD) BUFFCO PRODUCTION INC. 16925 POWELL JEANIE (SERPENTINE) WOODHAM OIL CORPORATION 08975 POWELL, C. Y., JR. -B- LENTZ MEB, LLC 14996 POWELL, C.Y. JR. LENTZ XOPHI ENERGY, LLC 05689 POWELL, E.L. JOURDANTON (ESCONDIDO -B-) EOG RESOURCES, INC. 10574 POWERS EAGLEVILLE (EAGLE FORD-1) TALISMAN ENERGY USA INC. 15776 POWERS UNIT EAGLEVILLE (EAGLE FORD-1) TALISMAN ENERGY USA INC. 16273


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ POWERS-SWAIM UNIT WILDCAT WYNN-CROSBY OPERATING, LTD. 14951 POWERS-SWAIM UNIT SAN MIGUEL CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 16710 POWERS, J.M. KAYE (NAVARRO) EMBREY OIL PRODUCTION CO. 05901 PRATER, JOSEPH SOMERSET GREAT PLAINS RESOURCES, INC. 11278 PRATT MINERVA-ROCKDALE BETRO, INC. 15093 PRATT, R. T. SPILLER NORTEX OIL & GAS CORP. 03352 PRATT, R. T. -A- SPILLER ORIGIN PRODUCTION COMPANY, INC. 03353 PRATT, R. T., -A- SPILLER WIEGAND BROS, DRLG. CO. 03471 PRATT, S.G. MINERVA-ROCKDALE CAP OPERATING INC. 05778 PRESIDIO RANCH UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16701 PRESSLEY CHICON LAKE PARK AVENUE RESOURCES, INC. 11866 PRESTAGE PEARSALL (AUSTIN CHALK) PRIME OPERATING COMPANY 14930 PRESTON FIRST SHOT (AUSTIN CHALK) EOG RESOURCES, INC. 14187 PRESTON PEARSALL (AUSTIN CHALK) HUGHES, DAN A. COMPANY, L.P. 15748 PRESTON A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16436 PREWITT, T. BULLOH (NAVARRO) GUIN, DON L. 10247 PRICE "B" EL INDIO, N.(OLMOS) ALLTEX EXPLORATION, INC. 11458 PRICE, ROBERT PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 14327 PRICE, ROBERT PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 12717 PRINCE MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15727 PRITCHETT BRISCOE RANCH (EAGLEFORD) NEWFIELD EXPLORATION COMPANY 15302 PRITCHETT PEARSALL (AUSTIN CHALK) NEWFIELD EXPLORATION COMPANY 16342 PROCTOR, G W 3-H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14452 PROCTOR, G. W. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01093 PROCTOR, G. W. 4-H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14589 PROCTOR, GENE PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 12621 PRONGHORN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16999 PROTHRO, JOHN E. BARBARAS PATCH (SAN MIGUEL) MORE TEXAS OIL 03443 PRUITT, E. J. CHARLOTTE (EDWARDS LIME) J.P. OIL COMPANY, INC. 03269 PRUITT, E. J. -D- CROWN, E. (NAVARRO) TANDEM ENERGY CORPORATION 00343 PRUITT, E. J. -E- PRUITT JPW ENERGY, L.L.C. 01404 PRUITT, E. J. -E- PRUITT, SE. (OLMOS) TANDEM ENERGY CORPORATION 01417 PRUITT, E. J. D2 CROWN, E. (NAVARRO) JENEX PETROLEUM CORPORATION 13964 PRUITT, E.J. CHARLOTTE (EDWARDS LIME, SEG. B) J.P. OIL COMPANY, INC. 09763 PRUITT, E.J. D2 CROWN, E. (NAVARRO) ORIGIN PRODUCTION COMPANY, INC. 15812 PRUITT, E.J. E5 PRUITT, SE. (OLMOS) JENEX PETROLEUM CORPORATION 13965 PRUSKI SOMERSET CRYSTAL RESOURCES, INC 11099 PRUSKI UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17092 PRYOR RANCH BRISCOE RANCH (EAGLEFORD) BHP BILLITON PET(TXLA OP) CO 15396 PRYOR RANCH PEARSALL (BUDA LIME) MCDAY ENERGY CORP. 15661 PRYOR RANCH WINN-DULCE (BRACERO-OIL) MCDAY ENERGY CORP. 08653 PRYOR RANCH WINN-DULCE (DEL MONTE) MCDAY ENERGY CORP. 14868 PRYOR RANCH WINN-DULCE (DEL MONTE-OIL) MCDAY ENERGY CORP. 08655 PRYOR RANCH WINN-DULCE (ELAINE) MCDAY ENERGY CORP. 07902 PRYOR-PICKENS LILLIE MARIE (SAN MIGUEL) VIRTEX OPERATING COMPANY, INC. 06462 PRYOR, IKE T. ET AL -B- PRYOR RANCH, WEST (ELAINE) CUATRO PETRO CORP. 05398 PRYOR, IKE T. III ET AL LILLIE MARIE (SAN MIGUEL) LONGHORN OIL PROPERTIES, INC. 13596 PRYOR, IKE T. III ET AL LILLIE MARIE (SAN MIGUEL) VIRTEX OPERATING COMPANY, INC. 10321 PSENCIK UNIT KELLY LYNNE (ANACHCHO) PREVAIL ENERGY, INCORPORATED 13809 PT UNIT B EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 16794 PTD UNIT #1 SOMERSET QUEST RESEARCH & DEV. CORP. 13203


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ PUDGE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16720 PURCELL, C. E. DUNLAP GINCO OPERATING CO. 03737 PURCELL, C. E. SPILLER GINCO OPERATING CO. 03354 PURCELL, C. E. "B" SPILLER GINCO OPERATING CO. 02182 PURCELL, C.E. SPILLER LULING O&G LLC 10024 PURSCH-MARSHALL EAGLEVILLE (EAGLE FORD-1) LLEWELLIN OPERATING COMPANY, LLC 16301 PURSCH, WOODY A.W.P. (OLMOS) AWP OPERATING COMPANY 12235 PURVIS FAIRFIELD GENIE OIL COMPANY 10489 PURVIS, JAMES LOUIS FAIRFIELD GENIE OIL COMPANY "A" 06844 PURYEAR, O. B. IMOGENE, SOUTHEAST BRYMER CONTRACTING INCORPORATED 00705 PUTMAN, P. W., ETAL SOMERSET PETROSAURUS, INC. 01638 PYRON CHICON LAKE OMNI OIL & GAS, INC. 17019 PYRON, A. M. SOMERSET GREAT PLAINS RESOURCES, INC. 01639 Q KIEL EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 17067 Q-BALLARD EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 17114 Q-JCB-A A.W.P. (OLMOS) WAPITI OPERATING, LLC 14564 QUAIL EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16592 QUESADA SOMERSET GREAT PLAINS RESOURCES, INC. 11042 QUESADA -A- SOMERSET GREAT PLAINS RESOURCES, INC. 10945 QUINTANILLA A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 15117 QUINTANILLA EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16574 QUINTANILLA - JCB A.W.P. (OLMOS) WAPITI OPERATING, LLC 14334 QUINTANILLA -B- A.W.P. (OLMOS) WAPITI OPERATING, LLC 14598 QUINTANILLA CCR EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16915 QUINTANILLA FBH A.W.P. (OLMOS) WAPITI OPERATING, LLC 15132 QUINTANILLA FBH A.W.P. (WILCOX 6200) WAPITI OPERATING, LLC 15231 QUINTANILLA MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16600 QUINTANILLA ME-YOU EF EAGLEVILLE (EAGLE FORD-1) SWIFT ENERGY OPERATING, LLC 15366 QUINTANILLA NO. 6 A.W.P. (OLMOS) WAPITI OPERATING, LLC 14225 QUINTANILLA SAN MIGUEL A.W.P. (OLMOS) WAPITI OPERATING, LLC 14296 QUINTANILLA SMEF EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16909 QUINTANILLA TEAL UNIT I MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16532 QUINTANILLA-BALLARD A.W.P. (OLMOS) WAPITI OPERATING, LLC 11699 QUINTANILLA, LEO TRUSTEE A.W.P. (OLMOS) AWP OPERATING COMPANY 13970 QUINTANILLA, T.C. FAIRFIELD QUINTANILLA, TONY C. 07854 QUINTANILLA, T.C. -B- FAIRFIELD QUINTANILLA, TONY C. 08256 R. COLLUM JR PEACH CREEK (AUSTIN CHALK) OSBORN HEIRS COMPANY 17314 R. D. TUCKER UNIT PILGRIM (AUSTIN CHALK) FM 1116 SWD LTD. 15071 R. L. SCHAEFER EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15688 R. MAY A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16012 R. MAY B EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16361 R. MTZ UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16339 R. P. SCHERER UNIT PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 13071 R. V. S. OIL UNIT NO. 3 PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 13084 R. WASHINGTON UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16365 R.H. PICKENS, ET AL "A" BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 15405 R.H. PICKENS, ET AL "B" BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 15473 R.H. PICKENS, ET AL A8 UNIT BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 15608 R.H. PICKENS, ET AL A9 UNIT BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 16147 R.H. PICKENS, ET AL B19 UNIT BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 17328 R.H. PICKENS, ET AL B20 UNIT BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 17327


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ R.H. PICKENS, ET AL, A7 BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 15609 R.V.S. PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 12856 R.V.S. OIL UNIT PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 12889 RAABE MARCELINA CREEK (AUSTIN CHALK) SEDCO RESOURCES INC 13143 RABB, BESSIE DUNLAP AUSTIN OPERATING, LLC. 07569 RABB, BESSIE DUNLAP SHEFTS & SHEFTS, INC. 03805 RABB, D. D. ESTATE STULTING JAD OIL, INC. 05547 RABB, W. DUNLAP K AND R OPERATING 08382 RABKE SAN MIGUEL CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 14794 RABKE-MASPERO OIL UNIT SAN MIGUEL CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 14916 RABKE-MASPERO UNIT SAN MIGUEL CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 14770 RABKE, HENRY SAN MIGUEL CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 14897 RACHEL PEACH CREEK (AUSTIN CHALK) BROWNING OIL COMPANY, INC. 07536 RACKLEY, HENRY CHICON LAKE RLU OPERATING, LLC 00304 RACKLEY, HENRY OIL UNIT CHICON LAKE RLU OPERATING, LLC 11359 RACKLEY, LEE W. BEAR CREEK STRICKER DRILLING CO., INC. 05819 RAFTER UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16111 RAGSDALE FIRST SHOT (AUSTIN CHALK) MARATHON OIL EF LLC 13574 RAINE INDEPENDENCE, WEST (OLMOS 3900) BRIDGER OIL INC. 06437 RAINE, J. R. INDEPENDENCE, WEST (OLMOS) BRIDGER OIL INC. 14330 RAINE, J.R. INDEPENDENCE, WEST (OLMOS 3900) BRIDGER OIL INC. 07209 RAINEY UNIT PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 15907 RAKOWITZ UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16543 RALL, GEORGE E. CHICON LAKE GENIE OIL COMPANY 07130 RALLY PEARSALL (AUSTIN CHALK) RED ARROW ENERGY, LLC 15051 RALLY PEARSALL (AUSTIN CHALK) U.S. ENERCORP, LTD. 15359 RALLY EAGLE BRISCOE RANCH (EAGLEFORD) U.S. ENERCORP, LTD. 15508 RALLY PETROLEUM PEARSALL (AUSTIN CHALK) U.S. ENERCORP, LTD. 15167 RALLY-SURLES UNIT PEARSALL (AUSTIN CHALK) U.S. ENERCORP, LTD. 15470 RALPH EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16985 RALPH PEARSALL (AUSTIN CHALK) AMPAK OIL COMPANY 13330 RALPH EDWARDS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16025 RAMBIE SOMERSET GREAT PLAINS RESOURCES, INC. 11090 RAMIREZ ALTA VISTA RAMIREZ, VALENTE 07518 RAMIREZ MONKSFIELD (350 SAND) RAMIREZ, VALENTE 11958 RAMIREZ DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15985 RAMSEY WILDCAT CASHFLOW EXPLORATION, INC. 12866 RAMSEY-FAULKNER 'A' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16308 RAMSEY-FAULKNER 'B' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16450 RAMSEY-FAULKNER 'C' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16492 RAMSEY-LARSON 'A' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16092 RAMSEY-LARSON 'B' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16270 RAMSEY-LARSON 'C' UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16347 RAMZINSKI UNIT NIXON ORIGIN PROD CO GONZALES PROP LLC 13892 RAMZINSKI, JOHN COOKSEY NEW BEGINNING 00307 RANCHO D LA TIERRA ROJA EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15679 RANCHO DE ANCHO L.P. EAGLEVILLE (EAGLE FORD-1) IRONWOOD OIL & GAS LLC 17103 RANCHO DE LA TIERRA ROJA EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15728 RANCHO RINCON BRISCOE RANCH (EAGLEFORD) STRAND ENERGY, L.C. 15940 RANCHO TRES HIJOS EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15386 RANCHO TRES HIJOS "A" EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15540


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ RANCHO TRES HIJOS "B" EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16558 RANCHO UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16051 RANCHO UNIT C LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16554 RANFT DARST CREEK (BUDA) FORTUNE OPERATING COMPANY 14223 RANFT, J. H. EST. DARST CREEK (BUDA) DJ EXPLORATION, INC. 04041 RANGEL UNIT A ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15570 RANGER BEALL RANCH BRISCOE RANCH (EAGLEFORD) LONESTAR OPERATING, LLC 15378 RANKIN EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15927 RANKIN PEARSALL (BUDA LIME) FRIO, INC. 12586 RASMUSSEN UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16525 RATHJEN A UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 15801 RATHJEN B UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 15788 RATHJEN C UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16548 RAUSCHHUBER BIG FOOT LUCAS ENERGY, INC. 10059 RAUSCHHUBER, EMORY BIG FOOT LUCAS ENERGY, INC. 06364 RAY BRISCOE RANCH (EAGLEFORD) SANCHEZ OIL & GAS CORPORATION 16055 RAYMOND FEE MINERVA-ROCKDALE RAYMOND, WM. C. 14158 RB AVANT UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 15733 RCJ CO.,INC. FAIRFIELD QUEST RESEARCH & DEV. CORP. 09639 RCR-HINTON UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 17318 RCT A EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16706 RCT B EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16673 REAL, HAROLD FLORESVILLE, EAST P.S.N. PETROLEUM, INC. 06102 REAMS, WAYNE -A- STOCKDALE (CARRIZO) P.S.N. PETROLEUM, INC. 06568 REBA UNIT PANDORA, NW (AUSTIN CHALK) P.S.N. PETROLEUM, INC. 12274 RECTOR FENTRESS (1750) BOB-KAT OIL CO. 10170 RECTOR SALT FLAT EAGLE ENERGY ACQUISITIONS LP 14163 RECTOR -A- FENTRESS (1750) BOB-KAT OIL CO. 10349 RED STAG UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15936 REDHEAD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16951 REDING, C. M. REDING (POTH SAND) SYJ OIL & GAS, INC. 03371 REED EAGLEVILLE (EAGLE FORD-1) TALISMAN ENERGY USA INC. 16323 REED -A- SALT FLAT, WEST LULING O&G LLC 10174 REED -AA- SALT FLAT, WEST LULING O&G LLC 10183 REED -BB- SALT FLAT, WEST LULING O&G LLC 10156 REED -BBB- SALT FLAT, WEST LULING O&G LLC 10298 REED -C- SALT FLAT, WEST LULING O&G LLC 10259 REED ADDITION UNIT SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 07932 REED CONSOLIDATED SALT FLAT, WEST LULING O&G LLC 07188 REED-MACKEY LULING-BRANYON GREAT PLAINS RESOURCES, INC. 03745 REED, FRANK EST. SALT FLAT LULING O&G LLC 05420 REED, FRANKIE DUNLAP (SERPENTINE) R & S OIL PRODUCTION CO. 00539 REED, N. W. SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 09656 REED, N. W. -B- SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 09657 REED, N.W. SALT FLAT, WEST LULING O&G LLC 07501 REED,F SALT FLAT, WEST LULING O&G LLC 06802 REEH RINEHART (AUSTIN CHALK) MORE TEXAS OIL 01871 REEH, ADOLPH SOMERSET TEXAS SECONDARY OIL CORPORATION 10803 REESE SWD CHARLOTTE, S. (EDWARDS) US LIQUIDS OF LA., L.P. 15899 REID EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16835 REID B EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16703


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ REILLY EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16048 REILLY EL INDIO, N.(OLMOS) TEXOKAN OPERATING, INC. 09575 REIMHERR, ROBERT N. CHICON LAKE GENIE OIL COMPANY 07976 REITZER SOMERSET GREAT PLAINS RESOURCES, INC. 10943 REITZER, JOEL SOMERSET GREAT PLAINS RESOURCES, INC. 07816 RENEE PEACH CREEK (AUSTIN CHALK) AV-TECH RESOURCES CORPORATION 09941 REPUBLIC-COUNTISS DAN COUNTISS (WRIGHT SAND) REPUBLIC RESOURCES, LLC. 14444 RETZLOFF-MAY UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15694 REYES PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 15086 REYES, A. CEDAR CREEK GEOMEG ENERGY OPERATING CO., LLC 00194 REYES, MARGARITO FAIRFIELD HODGE, C. ENERGY INC. 09171 RHEINLANDER FENTRESS (1750) HIGHER STANDARD OIL COMPANY,INC. 14703 RHEINLANDER, F. T. FENTRESS (1750) HIGHER STANDARD OIL COMPANY,INC. 15160 RHINO-TILDEN 306 SWD A.W.P. (OLMOS) RHINO OPERATING COMPANY, LLC 17095 RHODES, J. E. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 03768 RHODES, J.E. "S" TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06404 RHODES, JAMES, ETAL TENNEY CREEK SHUMAKE OIL 01734 RICE PANDORA, NW (AUSTIN CHALK) JEMCO PRODUCTION, INC 12608 RICE, ROBERT M. PANDORA, NW (AUSTIN CHALK) SCHAARON INTERNATIONAL ENERGY 08290 RICHARDS IMOGENE, S. (CARRIZO) MILLER, W. C. OPERATING COMPANY 03453 RICHARDSON PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16224 RICHARDSON UNIT #1RE PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 13150 RICHARDSON, BISHOP LA VERNIA SEGUIN PUMP 07567 RICHTER EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 17219 RICHTER W. P. HOLLOWAY (AUSTIN CHALK) EXXCEL OPERATING COMPANY 04139 RICHTER UNIT POTH, EAST (AUSTIN CHALK) TRIVISTA OPERATING LLC 08809 RICHTER UNIT A ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16553 RICHTER UNIT B ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17215 RICHTER-MOTT KAYE (NAVARRO) JOHANSON OIL 11698 RICHTER, ALEX & VERA PAWELEK (AUSTIN CHALK) GINCO OPERATING CO. 13844 RICHTER, EMMA F. SOMERSET GREAT PLAINS RESOURCES, INC. 10913 RICHTER, H. E. FASHING (AUSTIN CHALK) EXCALIBUR E & P, LLC 14259 RICHTER, KATE IMOGENE, S. (CARRIZO) TRAVELERS OIL & GAS, INC. 00700 RICHTER, KATIE IMOGENE, S. (CARRIZO) BRYMER CONTRACTING INCORPORATED 00693 RICHTER, KATIE ET AL IMOGENE, S. (CARRIZO) BRYMER CONTRACTING INCORPORATED 14853 RICHTER, PAUL ACLETO CREEK (POTH A) LA VERNIA OIL 11531 RICK -A- SOMERSET PETROSAURUS, INC. 11044 RICKS, E. ET AL SOMERSET GREAT PLAINS RESOURCES, INC. 10808 RICKS, S. E. SOMERSET GREAT PLAINS RESOURCES, INC. 01640 RIDDLE FAIRFIELD GENIE OIL COMPANY "A" 06367 RIDDLE "A" BATEMAN (AUSTIN CHALK) TRINIDAD PETROLEUM, INC. 13260 RIDDLE, C.L. BATEMAN (AUSTIN CHALK) TRINIDAD PETROLEUM, INC. 12102 RIDDLE, E. BUCHANAN DARST CREEK OIL COMPANY 07384 RIDDLE, GEORGE -A- MINERVA-ROCKDALE RIDDLE, GEORGE OIL CO. 09310 RIDDLE, GEORGE -B- MINERVA-ROCKDALE RIDDLE, GEORGE OIL CO. 11424 RIDDLE, J.M. BUCHANAN AUSTIN OPERATING, LLC. 10276 RIDDLE, W. C. RIDDLE LSA OPERATING 04573 RIDDLE, W. H. LYTTON SPRINGS DARST CREEK OIL COMPANY 01160 RIDDLE, W. M. BATEMAN TRIPLE C OIL INC. 00022 RIDGEWAY, MARY GALBA (BARTOSH) ATASCOSA EXPLORATION, LLC 15115 RIEGER OTTO "A" MATTHEWS BLACK JACK SERVICES, L.L.C. 14004


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ RIEGER, OTTO MATTHEWS BLACK JACK SERVICES, L.L.C. 01174 RIELLY, R. W. MINERVA-ROCKDALE STINGRAY OIL COMPANY, INC. 11773 RIFF TAYLOR-INA RIFF, OLGA 06508 RIGGAN PEARSALL (AUSTIN CHALK) GENESIS WELL SERVICE 12771 RIGGAN PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 12782 RIGGAN PEARSALL (AUSTIN CHALK) RICOCHET ENERGY, INC. 17079 RIGGAN "A" PEARSALL (AUSTIN CHALK) LEASE ROLLOVER OPERATIONS, INC. 12875 RIGGAN-BREAZEALE UNIT PEARSALL (OLMOS -A-) LEASE ROLLOVER OPERATIONS, INC. 03207 RIGGAN, J. M. PEARSALL (OLMOS -A-) LEASE ROLLOVER OPERATIONS, INC. 03177 RIGGAN, J. M., -A- PEARSALL (OLMOS -A-) LEASE ROLLOVER OPERATIONS, INC. 03203 RIGGAN, J.M. PEARSALL (AUSTIN CHALK) LEASE ROLLOVER OPERATIONS, INC. 12100 RIGGAN, J.M. JR. PEARSALL (OLMOS -A-) LEASE ROLLOVER OPERATIONS, INC. 09786 RIGGS -C- PEARSALL (AUSTIN CHALK) STARR OPERATING COMPANY 08202 RIGGS -F- PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 08173 RIGGS "E" PEARSALL (AUSTIN CHALK) SOUTH TEXAS OPERATING COMPANY 14749 RIGGS "G" PEARSALL (AUSTIN CHALK) SOUTH TEXAS OPERATING COMPANY 09768 RIGHTMER, JOHN W. LA VERNIA RIGHTMER, JOHN W. 09255 RIHN, DAVID TAYLOR-INA NAILS OPERATING COMPANY LLC 10065 RILEY -B- SOMERSET EMERALD BAY ENERGY, INC. 11719 RILEY -B- SOMERSET HABANERO OPERATING, INC. 11169 RILEY -C- SOMERSET HABANERO OPERATING, INC. 11173 RILEY, G. PLEASANTON, E. (BUDA) TRIDENT CORPORATION 10364 RILEY, J.C. SOMERSET PARKER, G.R. COMPANY, INC 10821 RILEY, MARY ELLA SHAW -A- SOMERSET BETA OIL CORPORATION 10837 RILEY, MARY ELLA SHAW -AP- SOMERSET EMERALD BAY ENERGY, INC. 10824 RIO MEDINA FARMS -A- SOUTHTON FIGHT FOR THE FAMILY 09529 RIOJAS FAIRFIELD HODGE, C. ENERGY INC. 09747 RIOS, LAURA LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01095 RIOS, R. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01096 RIOS, R. 2H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14727 RIPPEY PEARSALL (AUSTIN CHALK) LEASE ROLLOVER OPERATIONS, INC. 13573 RIPPEY -A- BIG FOOT LEASE ROLLOVER OPERATIONS, INC. 14376 RISENGER BATEMAN (AUSTIN CHALK) FOYORO ENERGY, LLC 13491 RISINGER "A" BATEMAN (AUSTIN CHALK) FOYORO ENERGY, LLC 13549 RITCHIE PEARSALL (AUSTIN CHALK) RITCHIE, H. G. JR. 04979 RITCHIE -C- PEARSALL (AUSTIN CHALK) RITCHIE, H. G. JR. 09606 RITCHIE "C-2" PEARSALL (AUSTIN CHALK) RITCHIE, H. G. JR. 12516 RITCHIE FARMS EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15315 RITCHIE FARMS UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16486 RITCHIE-TALLEY UNIT NIXON G & K OPERATING, LLC 09032 RITCHIE, H. G. JR. PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 05126 RITCHIE, H. G. JR. -A- PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 05238 RIVAS SOMERSET WSM 11264 RIVER LOWE RANCH EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15581 RNG UNIT WELL EAGLEVILLE (EAGLE FORD-1) CINCO NATURAL RESOURCES CORP. 16317 ROAMEL, P. "B" DARST CREEK (BUDA) GARRISON LTD. 04342 ROAMEL, P. "A" DARST CREEK (BUDA) GARRISON LTD. 02743 ROAMEL, P. "C" DARST CREEK (EDWARDS) GARRISON LTD. 02803 ROARK ARNOLD-WELDON (WRIGHT) REPUBLIC RESOURCES, LLC. 14190 ROARK MINERVA-ROCKDALE JENKINS, R. D. 01255 ROARK UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16731


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ ROARK, H. M. ARNOLD-WELDON (WRIGHT S SEG) WYNN-CROSBY OPERATING, LTD. 03929 ROARK, H. M. -A- ARNOLD-WELDON (WRIGHT S SEG) WYNN-CROSBY OPERATING, LTD. 03325 ROBERT HINDES EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16077 ROBERT KOTARA EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16974 ROBERT PRICE -A- PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 15491 ROBERT PRICE -A-2 UNIT PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 14747 ROBERTS MIDWAY (2300 OIL) DPM OPERATING 14042 ROBERTS PEARSALL (AUSTIN CHALK) GOLDEN CHILD, INC. 12928 ROBERTS PEARSALL (BUDA LIME) CHESAPEAKE OPERATING, INC. 15171 ROBERTS FEE LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01101 ROBERTS UNIT MONKSFIELD (350 SAND) ROOT DRILLING COMPANY 10577 ROBERTS, BENTON PEARSALL (AUSTIN CHALK) FORTUNE OPERATING COMPANY 13231 ROBERTS, CECIL R. SOMERSET LANDOR OIL CO. 03239 ROBERTS, FRANK LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01099 ROBERTS, FRED LULING-BRANYON EAGLE FORD OIL CO., INC. 01041 ROBERTS, J. BOB MIDWAY (2300 OIL) THREE FORKS OPERATING CO, LLC 11795 ROBERTS, J. M. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01100 ROBERTS, JESSE I. KAYE (NAVARRO) CASTILLO OIL COMPANY LLC 01958 ROBERTS, K. PEARSALL (AUSTIN CHALK) VICEROY PETROLEUM, LP 12450 ROBERTS, KATIE ET AL PEARSALL (AUSTIN CHALK) BRAZOS PETROLEUM, INC. 12895 ROBERTS, KATIE ET AL PEARSALL (AUSTIN CHALK) PONTIAC OIL, INC. 05344 ROBERTS, VIVIAN DARST CREEK (BUDA) GARRISON LTD. 04515 ROBERTSON SALT FLAT, WEST CASTILLO OIL COMPANY LLC 08806 ROBERTSON-LASITER UNIT PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 13104 ROBERTSON, HARRY SOMERSET PETROSAURUS, INC. 10774 ROBERTSON, K.E. PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 13741 ROBERTSON, R.H. SOMERSET SPAIN OIL COMPANY 10794 ROBERTSON, R.H. -A- SOMERSET SPAIN OIL COMPANY 10797 ROBERTSON, R.H. -B- SOMERSET SPAIN OIL COMPANY 12257 ROBINSON BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 13848 ROBINSON DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 13891 ROBINSON I DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 13950 ROBINSON-TROELL FIRST SHOT (AUSTIN CHALK) MARATHON OIL EF LLC 13349 ROBINSON, J. A. TRUST CHRISTINE, SE. (WILCOX) KEBO OIL & GAS, INC. 04837 ROBINSON, M. C. MILBUR, SW (WILCOX 2800) THREE FORKS OPERATING CO, LLC 04004 ROBLES, JULIO KAYE (NAVARRO) GEOMEG ENERGY OPERATING CO., LLC 00769 ROBLES, S. C. SCOTTY (BARTOSH SAND) RICKAWAY ENERGY, CORP. 01571 ROBUCK -A- BUCHANAN SPILLER, J.A. 12018 ROBUCK, BERRY LULING-BRANYON J. H. W. INC. 04566 ROBUCK, M. BUCHANAN SPILLER, J. A. COMPANY 12017 ROCHE, LUCY BIG FOOT JENEX PETROLEUM CORPORATION 06251 ROCHE, LUCY BIG FOOT (OLMOS D-3 SAND) JENEX PETROLEUM CORPORATION 00122 ROCHESTER 11 ACRES SALT FLAT, WEST FINALY RESOURCES LLC 06725 ROCHESTER-B- SALT FLAT, WEST FINALY RESOURCES LLC 06723 ROCHESTER, J. #4 SALT FLAT EAGLE FORD OIL CO., INC. 06450 ROCHESTER, J. UNIT SALT FLAT LULING O&G LLC 06467 ROCHESTER, JOHNNY SALT FLAT, WEST EAGLE FORD OIL CO., INC. 06715 ROCK CREEK RANCH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15652 ROCKDALE IND. SCHOOL DIST. MINERVA-ROCKDALE COMANCHE WELL SERVICE CORP. 02204 ROCKDALE STATE BK. "A" MILBUR (NAVARRO) BETRO, INC. 05921 ROCKPILE RANCH PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, INC. 15113


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ ROCKY COMFORT-HIXON EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15928 ROD, R.J. (BOB) PEARSALL (AUSTIN CHALK) SABINAL RESOURCES, INC. 13881 ROD, R.J. (BOB) -A- PEARSALL (AUSTIN CHALK) SABINAL RESOURCES, INC. 12393 RODENBERG LULING-BRANYON ALTA MESA SERVICES, LP 03693 RODENBERG, ALTON T. DUNLAP SHEFTS & SHEFTS, INC. 07618 RODENBERG, ALTON T. DUNLAP T. A. W. COMPANY 06842 RODENBERG, ALTON T. SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 07591 RODENBERG, ALTON T. -A- DUNLAP EAGLE FORD OIL CO., INC. 13715 RODENBERG, ANDREW J. LULING-BRANYON GINCO OPERATING CO. 03166 RODENBERG, MRS. IDA -B- LULING-BRANYON FIELD OPERATING COMPANY, INC. 03688 RODENBURG, ALTON T DUNLAP GREAT PLAINS RESOURCES, INC. 06836 RODENBURG, ALTON T. DUNLAP GEOMEG ENERGY OPERATING CO., LLC 06841 RODRIGUEZ CHICON LAKE GENIE OIL COMPANY 02922 RODRIGUEZ FAIRFIELD BLACKBIRD OIL & GAS, LLC. 12117 RODRIGUEZ, AUGUSTIN SOMERSET PETROSAURUS, INC. 03217 RODRIGUEZ, MARIO E. CHICON LAKE EVERETT OIL 07371 RODRIGUEZ, ROBERTO S. CHICON LAKE EVERETT OIL 06515 RODRIQUEZ /SHALLOW/ FLD. UNIT RODRIQUEZ (SHALLOW) GGG OIL COMPANY, LTD. 03450 ROEBUCK, M. LULING-BRANYON SPILLER, J. A. COMPANY 02405 ROEGELEIN FAIRFIELD GREAT PLAINS RESOURCES, INC. 08078 ROEMER WEAVER & OLSON (POTH) CROSSROADS MINERAL PROD., L.L.C. 11351 ROEMER, IDA WEAVER & OLSON (POTH) CROSSROADS MINERAL PROD., L.L.C. 02585 ROGERS BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15428 ROGERS FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 09599 ROGERS MAPLE HUGHES (BURTON 1550) FREESTONE RESOURCES, INC 11399 ROGERS -B- TAYLOR-INA CVS PRODUCTION, LLC. 08836 ROGERS THEO KYOTE REPUBLIC RESOURCES, LLC. 15079 ROGERS, C. C. UNIT -1- TAYLOR-INA CVS PRODUCTION, LLC. 03398 ROGERS, F.H. FAIRFIELD AAA OIL COMPANY 06435 ROGERS, THEO -A- KYOTE SEAGULL OPERATING CO., INC. 07803 ROGERS, THEO "A" KYOTE INCEPTUS OPERATIONS, LLC 14021 ROGERS, THEO "C" KYOTE DISCOVERY PETROLEUM, L.L.C. 14015 ROGERS, THEO "D" KYOTE INCEPTUS OPERATIONS, LLC 14020 ROGERS, THEO. -A- KYOTE TOMAHAWK PETROLEUM 00803 ROJO UNIT PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 14103 ROLAND P RIDDLE ARIZONA OIL 14806 ROLAND, P. RIDDLE H - A ENERGY, INC. 11820 ROLLERT-WADDELL (MANFORD) DARST CREEK (BUDA) AUSTIN OPERATING, LLC. 07655 ROLLERT/MANFORD KENS (SERPENTINE) AUSTIN OPERATING, LLC. 13867 ROLLERT, B. P. LULING-BRANYON RBR OPERATING, INC. 01141 ROOF, JOHN H. FAIRFIELD CIVRON PETROLEUM RES., LLC 08209 ROOS GAS UNIT 1 WILDCAT PEARL, BILL H. PRODUCTIONS, INC. 05975 ROOS, LORENE WILLIS COUSINS (QUEEN CITY 5740) PEARL, BILL H. PRODUCTIONS, INC. 04487 ROOT, JOHN PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 12146 ROSEBROCK, ALFRED LA VERNIA QUEST RESEARCH & DEV. CORP. 02484 ROSENAUER STACY (OLMOS -A-) BLACK SABLE ENERGY, LLC 15305 ROSENAUER, MATTIE BIG FOOT JENEX PETROLEUM CORPORATION 00037 ROSKYDAL, DONALD LA VERNIA ROSKYDAL, DONALD F. 08080 ROSS, A. DUNLAP KIDD PRODUCTION CO. 03809 ROSS, C. E. DUNLAP FIVE STAR ENERGY, INC. 03806 ROSS, C. P. LULING-BRANYON B-3 OIL CO. 01042


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ ROSS, C. P. LULING-BRANYON GINCO OPERATING CO. 01119 ROSS, C. P. -A- LULING-BRANYON LIF-TEX OIL RECOVERY, INC. 03146 ROSS, C.E. -B- DUNLAP CENTEX PIPE & EQUIPMENT, INC. 06947 ROSS, C.E. -C- DUNLAP EAGLE FORD OIL CO., INC. 07317 ROSS, C.P. -A- LULING-BRANYON GINCO OPERATING CO. 11357 ROSS, ETTA SALT FLAT SHEFTS & SHEFTS, INC. 03084 ROSSER, T I #2 ROSSER (SERPENTINE) UNITED OPERATING, LLC 09386 ROSSER, T.I. #4 ROSSER (SERPENTINE) UNITED OPERATING, LLC 10063 ROSSOW-BRZOZOWSKI 1 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17236 ROSSOW-BRZOZOWSKI 2 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17237 ROUGEOU UNIT SALT FLAT OFFSPRING WELL SALVAGE 02895 ROUNTREE MINERVA-ROCKDALE OMNI OIL & GAS, INC. 01214 ROUSE, NANNIE T. LINNE, S. (POTH -A- SAND) LYNCH, WILBUR WALDO, ESTATE OF 03715 ROWELL-COLWELL EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16142 ROXANA UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16066 ROYAL LOCKE IMOGENE (ESCONDIDO A) PEARL, BILL H. PRODUCTIONS, INC. 04037 RSI ATASCOSA SWD EAGLEVILLE (EAGLE FORD-1) RADACK SERVICES, INC. 16240 RTH UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16780 RUBIES DREAM UNIT B ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16723 RUBIES DREAM UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16609 RUBIO, BENITO FAIRFIELD FAR, INC. 06640 RUBOTTOM, ETAL, UNIT SALT FLAT OFFSPRING WELL SALVAGE 03074 RUDDOCK VACCINATING SERVICE PILGRIM (AUSTIN CHALK) MARANATHA OIL COMPANY 14808 RUDDOCK, UPTON PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 12977 RUDELOFF, ADOLPH LA VERNIA THREE J ENERGY, INC. 06283 RUIZ UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16660 RUIZ UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16663 RUMFIELD, W.J. PEARSALL (AUSTIN CHALK) LONE STAR OPERATING COMPANY 05153 RUPLE FARMS PRUITT, N. (4500) 3 W INVESTMENTS LLC 12147 RUPLE FARMS PRUITT, S.E. (ESCONDIDO) 3 W INVESTMENTS LLC 09596 RUPLE FARMS PRUITT, SE. (OLMOS) 3 W INVESTMENTS LLC 09582 RUPLE FARMS 1217 WILDCAT 3 W INVESTMENTS LLC 13947 RUSHING, PAUL E. SOUTHTON RUSHING OIL CO. 06192 RUSKIN BEAR CREEK LR PETROLEUM 00026 RUSSELL MINERVA-ROCKDALE BABCO OIL & GAS, LLC 11983 RUSSELL, JOHN JR. ECKERT PAISANO PRODUCTION, INC. 02496 RUSSELL, WILLIAM A. FAIRFIELD CALK, ROGER D. 07374 RUTH PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15684 RUTHERFORD, BILL JOURDANTON (RECKLAW) STRATA STAR PETROLEUM CORP. 09052 RUTHERFORD, MARTIN LEMING (2934 SAND) STARBURST ENERGY, INC. 09543 RUTHERFORD, MARTIN ESTATE LEMING (2934 SAND) GEM OIL & GAS COMPANY 11324 RUTHERFORD, W. C "A" A.W.P. (OLMOS) XTO ENERGY INC. 08659 RUTHERFORD, W.C. EST. A.W.P. (OLMOS) XTO ENERGY INC. 08109 RVR EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16742 RYAN CLOETER (WILCOX 5800) OMEGA ENERGY, LLC 14810 RYAN, W. J. CHARLOTTE (NAVARRO) WEN-BE 05449 RYCHLIK UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16070 S & H TRUST EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17198 S & H TRUST UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17189 S BEEVER ET AL DOERING RANCH (GEORGETOWN) VIRTEX OPERATING COMPANY, INC. 16419 S HERBST UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16798


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ S HERBST UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16799 S P J S T LODGE JOURDANTON VIRTEX OPERATING COMPANY, INC. 14549 S. DUDERSTADT EAGLEVILLE (EAGLE FORD-1) RILEY EXPLORATION, LLC 15494 S. KING UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15453 S. T. S. /SOUTH TEXAS SYNDICATE/ WASHBURN, EAST (4800) S & T SALVAGE 02935 S.A.U.G.R. RY. DINSMOOR (CARRIZO) RAY JR. CO., INC. 00508 SABCO AUTUMN PEARSALL (AUSTIN CHALK) WHITE MARLIN OPERATING CO, LLC 12941 SABCO ELAINE AC ELAINE (AUSTIN CHALK) WHITE MARLIN OPERATING CO, LLC 16429 SABCO ELAINE AC 99 ELAINE (AUSTIN CHALK) WHITE MARLIN OPERATING CO, LLC 17267 SACHS-CURTIS B UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 17195 SACHS-TRUST A UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 17194 SADA FAIRFIELD CALK OIL COMPANY 10545 SAENGER-HOFFMAN UNIT SOMERSET PETROSAURUS, INC. 03351 SAGO BOWERS PEARSALL (AUSTIN CHALK) TEXOKAN OPERATING, INC. 12463 SAKO UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16540 SAKO-WATSON UNIT I DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16865 SAKO-WATSON UNIT II DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16746 SAL MAR "B" SOMERSET GREAT PLAINS RESOURCES, INC. 11420 SAL-MAR -C- SOMERSET GREAT PLAINS RESOURCES, INC. 11515 SAL-MAR UNIT SOMERSET GREAT PLAINS RESOURCES, INC. 10838 SALAS FAIRFIELD APACHE OIL COMPANY 06551 SALDANA, RAUL SOMERSET SOUTHWEST LOOP 1604, LTD. 16922 SALINAS UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16911 SALINAS UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16874 SALINAS UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16784 SALINAS UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16782 SALINAS, DANIEL SOMERSET ASTRO ENERGY 10895 SALINAS, DANIEL & ESIDRO SOMERSET ASTRO ENERGY 10958 SALLIE CLARK ESTATE -B- LULING-BRANYON AUSTIN OPERATING, LLC. 04133 SALLIS BOULDIN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16779 SAMPLE BAROS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16129 SAMPLE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16605 SAMPLE UNIT STOCKDALE, EAST (CHALK, UPPER) BJT OIL COMPANY, INC 14027 SAMPLE-VANA EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16330 SAMUELS, LESLIE P. PEARSALL (AUSTIN CHALK) FIRST ROCK, INC. 07777 SAMUELS, LESLIE P. -B- PEARSALL (AUSTIN CHALK) CARRIZO EXPLORATION, INC. 13036 SAN ANTONIO COTTON MILL SOUTHTON OILEX INT'L INVESTMENTS, INC. 01657 SAN ANTONIO COTTON MILL -A- SOUTHTON OILEX INT'L INVESTMENTS, INC. 01660 SAN MIGUEL A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16630 SAN MIGUEL B UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16295 SAN MIGUEL C UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17127 SAN MIGUEL D UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16727 SAN MIGUEL NO. 1 EAGLEVILLE (EAGLE FORD-1) WELHAUSEN OPERATING COMPANY, LP 16421 SAN MIGUEL RANCH EF EAGLEVILLE (EAGLE FORD-1) SWIFT ENERGY OPERATING, LLC 15513 SAN MIGUEL RANCH OL A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 15367 SAN MIGUEL-Q NO.2 A.W.P. (OLMOS) WELHAUSEN OPERATING COMPANY, LP 15643 SAN PEDRO RANCH HUGH FITZSIMONS (OLMOS) PRIME OPERATING COMPANY 04761 SAN PEDRO RANCH HUGH FITZSIMMONS (SAN MIGUEL) BLACKBRUSH O & G, LLC 14952 SAN PEDRO RANCH HUGH FITZSIMMONS (SAN MIGUEL) PRIME OPERATING COMPANY 04762 SAN PEDRO RANCH -A- HUGH FITZSIMMONS (SAN MIGUEL) PRIME OPERATING COMPANY 13249 SAN PEDRO RANCH AC FITZ (AUSTIN CHALK) PRIME OPERATING COMPANY 05544


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SAN PEDRO RANCH DS HUGH FITZSIMMONS (SAN MIGUEL) PRIME OPERATING COMPANY 02543 SAN PEDRO RANCH-CONOCO HUGH FITZSIMMONS (SAN MIGUEL) PRIME OPERATING COMPANY 04325 SANCHEZ & GONZALES SOMERSET GREAT PLAINS RESOURCES, INC. 11049 SANCHEZ & GONZALES -C- SOMERSET GREAT PLAINS RESOURCES, INC. 11050 SANCHEZ & GONZALES, O.C. SOMERSET GREAT PLAINS RESOURCES, INC. 11149 SANCHEZ/GONZALES UNIT SOMERSET GREAT PLAINS RESOURCES, INC. 07247 SANCHEZ, B. UNIT SOMERSET GREAT PLAINS RESOURCES, INC. 11080 SANDEEN, JOHN JOURDANTON VIRTEX OPERATING COMPANY, INC. 00740 SANDEEN, JOHN JOURDANTON (BUDA) VIRTEX OPERATING COMPANY, INC. 13732 SANDERS FARM MINERVA-ROCKDALE ERNEST OPERATING COMPANY 07069 SANER RANCH WILDCAT NEWFIELD MAVERICK BASIN LLC 15131 SANER RANCH SANER RANCH (SAN MIGUEL) NEWFIELD MAVERICK BASIN LLC 14947 SANFORD #2 SUTIL (BUDA) MARSHFIELD OIL & GAS, LLC 12923 SANFORD UNIT DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15589 SANFORD, R.H SUTIL (REEF) MARSHFIELD OIL & GAS, LLC 13760 SANJAC UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16796 SANTA CRUZ REALTY, ET AL UNIT BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 15400 SANTELLAN UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16534 SANTOSCOY UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16717 SARAH E. FERRY UNIT-BLOCK 13 PLEASANTON (EDWARDS LIME 8100) JPW ENERGY, L.L.C. 13992 SARAH-EMILY PEARSALL (AUSTIN CHALK) D. AND Y. YUNK PRODUCTIONS 13278 SARTAIN ASSETS LTD OIL UNIT PEARSALL (AUSTIN CHALK) C6 OPERATING, L.L.C. 16481 SASSER, STUART -A- PLEASANTON, E. (EDWARDS) PEARL, BILL H. PRODUCTIONS, INC. 09644 SATURN SATURN (NAVARRO) DIAMOND M DRLG & EXPL CO. 14939 SAUER, OLGA FAIRFIELD K.A. BARNES OIL & GAS OPER, LLC 02065 SAUNDERS, J.J. PRUITT PEARL, BILL H. PRODUCTIONS, INC. 11646 SAUNDERS, SUSIE BIG FOOT JENEX PETROLEUM CORPORATION 00038 SAUNDERS, SUSIE D BIG FOOT (OLMOS D-3 SAND) JENEX PETROLEUM CORPORATION 15057 SAVANNAH BIG WELLS (SAN MIGUEL) RCLJ CONSTRUCTION, INC. 15025 SAVANNAH BIG WELLS(SAN MIGUEL, LO., EAST) RCLJ CONSTRUCTION, INC. 13495 SAWYER, N.C. FAIRFIELD GREAT PLAINS RESOURCES, INC. 09282 SAYLEE RANCH SWD MANTI KUDU SOUTH MTLV PROPERTIES, LLC 16294 SAYLEE SOUTH EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16027 SBR A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 14305 SBR "C" A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 14841 SCARBOROUGH CALLIHAM ELDON OIL CO. 15169 SCHAAF, JOHN W. JORDAN (NAVARRO B) VICEROY PETROLEUM, LP 14293 SCHACKEL, ANNIE ET AL SALT FLAT LULING O&G LLC 03341 SCHACKEL, JAKE SALT FLAT NJP OIL & GAS LLC 06493 SCHAEFFER, T. LARREMORE MAVERICK ENERGY GROUP, INC. 00813 SCHAUER, F. T. PILGRIM (BUDA) LUCAS ENERGY, INC. 13009 SCHAUER, MONROE UNIT MAG (AUSTIN CHALK) FIRST ROCK, INC. 10281 SCHAUTTEET, R. TAYLOR-INA KLAEGER OPERATING COMPANY, LLC 06112 SCHEFFLER EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16934 SCHELLER, H. A. BIG FOOT JENEX PETROLEUM CORPORATION 00102 SCHERTZ/SANCHEZ LA VERNIA SEGUIN PUMP 09045 SCHERTZ, ELTON LA VERNIA SEGUIN PUMP 00940 SCHIEFELBEIN, RUDOLF E. NIXON, SE (AUSTIN CHALK) MESSY OIL AND GAS, LLC 13476 SCHIEVELBEIN, ALBERT LA VERNIA THREE J ENERGY, INC. 00938 SCHIEVELBEIN, B. -A- LA VERNIA SCHIEVELBEIN, BRYAN O. 10042 SCHIEVELBIEN, ALBERT LA VERNIA SEACO PRODUCTION 06012


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SCHIFFERS MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 14383 SCHIFFERS RANCH MARCELINA CREEK (AUSTIN CHALK) LOMA VISTA FARMS 11969 SCHIFFERS RANCH MARCELINA CREEK (BUDA) FIRST ROCK, INC. 12316 SCHIFFERS RANCH -A- MARCELINA CREEK (BUDA) LOMA VISTA FARMS 12110 SCHIFFERS, MOBERLEY SUTIL (AUSTIN) OXY USA INC. 14172 SCHLATHER, MAX LINNE (POTH -A- SAND) GRAMMER, JOHN, OIL ACCOUNT 10488 SCHMIDT BUCHANAN GEOMEG ENERGY OPERATING CO., LLC 13842 SCHMIDT PEARSALL (AUSTIN CHALK) ZORRA OIL & GAS 12920 SCHMIDT SOMERSET SEAGULL OPERATING CO., INC. 11223 SCHMIDT -A- SOMERSET SEAGULL OPERATING CO., INC. 11219 SCHMIDT, BETTIE "S" TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 01882 SCHMIDT, BETTYE TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 02495 SCHMIDT, BETTYE -B- TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 01713 SCHMIDT, G.E. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 07141 SCHMIDT, IRA G., MRS. TAYLOR-INA CHESSHER, OTTO DRILLING COMPANY 02458 SCHMIDT, IRA G., MRS. TAYLOR-INA KLAEGER OPERATING COMPANY, LLC 01712 SCHMIDT, J.D. UNIT I TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06701 SCHMIDT, LENORA TAYLOR-INA PRODUCTION RESOURCES, INC. 01723 SCHMIDT, LENORA -B- TAYLOR-INA LANDMEN OF TEXAS, INC. 10480 SCHMIDT, O. K. TAYLOR-INA LANDMEN OF TEXAS, INC. 04146 SCHMIDT, OSCAR TAYLOR-INA EMERALD BAY ENERGY, INC. 01724 SCHMIDT, OSCAR "C" TAYLOR-INA EMERALD BAY ENERGY, INC. 14991 SCHMIDT, OSCAR B TAYLOR-INA LANDMEN OF TEXAS, INC. 14565 SCHMITT PILGRIM (AUSTIN CHALK) MODERN EXPLORATION, INC. 12916 SCHNEEBELI, EARL DIXIE (NAVARRO B) SELLERS LEASE SERVICE, INC. 11497 SCHNEEBELI, KITTIE DIXIE (NAVARRO B) SELLERS LEASE SERVICE, INC. 10681 SCHNEEBELI, KITTIE MIDWAY (2300 OIL) SELLERS LEASE SERVICE, INC. 12211 SCHNEIDER -A- MINERVA-ROCKDALE COTTONWOOD CREEK ENTERPRISES LLC 01269 SCHNEIDER, ERNEST MINERVA-ROCKDALE PRICE OPERATING, LLC 02596 SCHNEIDER, GEORGE P. FAIRFIELD CALK, ROGER D. 07484 SCHNEIDER, HELEN MARCELINA CREEK (AUSTIN CHALK) TEXAS, LES & CO. 12025 SCHNEIDER,F.H.J. LARREMORE NETWORK SYSTEMS OGP CORP. 00814 SCHNITZ, ELAINE LA VERNIA DONOCO OIL COMPANY 08557 SCHNITZ, HARLEY D. LA VERNIA NEW BEGINNING 02176 SCHOELLER, KATE WILDCAT OILTON RESOURCES, INC. 14585 SCHOMBURG UNIT PEACH CREEK (BUDA) ADAIR & BALLINGER PETRO., INC. 12097 SCHORP EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15754 SCHORP, FRANK EST. PEARSALL (AUSTIN CHALK) PONTIAC OIL, INC. 12672 SCHORP, H. J. PEARSALL (AUSTIN CHALK) COMSTOCK OIL & GAS, LP 12756 SCHORSCH "A" JOURDANTON VIRTEX OPERATING COMPANY, INC. 14801 SCHORSCH, HENRY JOURDANTON (CARRIZO SAND) MILLER, W. C. OPERATING COMPANY 00755 SCHOTT BEAR CREEK P.S.N. PETROLEUM, INC. 13689 SCHRADER-THIEDE PEACH CREEK (AUSTIN CHALK) PENN VIRGINIA OIL & GAS, L.P. 12948 SCHRAER UNIT MARCELINA CREEK (AUSTIN CHALK) XOG OPERATING LLC 12878 SCHRAFFL LA VERNIA HOERMANN, S. E. 00848 SCHRAUB, ED. LA VERNIA TEXAS COASTAL RESOURCES LLC 00889 SCHROEDER BUCHANAN SPILLER, J.A. 00136 SCHROEDER W. P. HOLLOWAY (NAVARRO) SCHROEDER OIL PROPERTIES 09456 SCHROEDER-CHAPMAN UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15555 SCHROEDER-MEDLEN BUCHANAN SPILLER, J.A. 12082 SCHUBERT, A. H. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01102


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SCHUCHARDT, ALBERT PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 06480 SCHUELING, AUGUST TAYLOR-INA FASELER, HERB 10066 SCHULZE GIDDINGS (AUSTIN CHALK-1) PRIDE ENERGY COMPANY 10293 SCHULZE-SCOTT A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16405 SCHULZE-SCOTT C UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16961 SCHULZE, WALTER J. PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 13170 SCHUMANN, A. O. WEIGANG ACOCK/ANAQUA OPERATING CO., LP 01772 SCHUMANN, A. O. WEIGANG, WEST (CARRIZO) ACOCK/ANAQUA OPERATING CO., LP 15224 SCHUMANN, H. A. WEIGANG ACOCK/ANAQUA OPERATING CO., LP 01773 SCHUMANN, H. A. -B- WEIGANG ACOCK/ANAQUA OPERATING CO., LP 14240 SCHUPP DAVIS EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17105 SCHWAMP MINERVA-ROCKDALE REO OPERATING LLC 16359 SCHWARZ, A. W. JOURDANTON EOG RESOURCES, INC. 00753 SCHWEERS, M. F. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 01714 SCHWOPE LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15945 SCHWOPE NORTH LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17317 SCHWOPE SOUTH LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16870 SCOGGIN, W.B. ET AL FAIRFIELD GREAT PLAINS RESOURCES, INC. 07168 SCOTT MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04391 SCOTT FOUNDATION CAMPANA, SOUTH CIMARRON ENGINEERING CORP. 13963 SCOTT FOUNDATION CAMPANA, SOUTH (CHERNOSKY) CIMARRON ENGINEERING CORP. 13949 SCOTT FOUNDATION CAMPANA, S. (GOVT. WELLS SD.) CIMARRON ENGINEERING CORP. 13853 SCOTT SCHULZE EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16049 SCOTT-WILKINSON EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16395 SCOTT-WILKINSON J UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16396 SCOTT-WILKINSON Q UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 17302 SCOTT, D. A. MILBUR (NAVARRO) VICEROY PETROLEUM, LP 04269 SCOTT, DAVE ET AL MILBUR (NAVARRO) SELLERS LEASE SERVICE, INC. 04412 SCREAMING EAGLE EAGLEVILLE (EAGLE FORD-1) PRIMERA ENERGY, LLC 16422 SCULL LA VERNIA FAR, INC. 00877 SCULL RANCH GLENN POTH (POTH SAND) METCO OIL CORPORATION 14251 SCULL-SHAW ET AL UNIT LA VERNIA (AUSTIN CHALK) OFFSPRING WELL SALVAGE 13524 SCULL, ALICE WARREN LA VERNIA KOCH, I. ERNEST 00922 SCULL, ALICE WARREN LA VERNIA METCO OIL CORPORATION 02284 SCULL, C. E. LA VERNIA CASTILLO OIL COMPANY LLC 09577 SCULL, C. E. LA VERNIA THREE J ENERGY, INC. 00878 SCULL, C. E. EST., DR. LA VERNIA METCO OIL CORPORATION 00911 SCULL, C. E. JR. LA VERNIA METCO OIL CORPORATION 05939 SCULL, C. E. JR. -B- LA VERNIA METCO OIL CORPORATION 09886 SCULL, C. E., DR., EST. LA VERNIA METCO OIL CORPORATION 00918 SCULL, C. E., JR. -G- GLENN POTH (POTH SAND) METCO OIL CORPORATION 14142 SCULL, DR. C. E. ESTATE GLENN POTH (POTH SAND) METCO OIL CORPORATION 14144 SEAGO MINERVA-ROCKDALE DOUBLE DEUCE OPERATING 09779 SEAHORN, LOTTIE KAYE (NAVARRO) CALTEX ENERGY CO. 02095 SEAL-LEHMAN A EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 17040 SEAL-LEHMAN B UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 17049 SEEWALD EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16371 SEFCIK, MRS. V. LAGRONE CHEROKEE (NAVARRO) SHELDON RESOURCES, L.P. 04436 SEFFEL SOMERSET SEAGULL OPERATING CO., INC. 11215 SEFFEL -A- SOMERSET SEAGULL OPERATING CO., INC. 11217 SEGGERN THRALL THRALL OPERATING COMPANY, INC. 04930


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SEGUIN RANCH PARTNERSHIP GUADALUPE BEND (AUSTIN CHALK) P.S.N. PETROLEUM, INC. 13772 SEGURA MONKSFIELD (350 SAND) R.D. OIL COMPANY 08743 SEIDEL EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17043 SEIDEL-GONZALEZ EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17044 SEIDEL, H. SOMERSET WSM 10847 SEIFERT, MARVIN LEMING (2934 SAND) GINCO OPERATING CO. 07698 SEILER, LEE ROY PALMER (POTH-B) J&J OIL 07330 SEIVERS, W. A. LULING-BRANYON NJP OIL & GAS LLC 03366 SEKULA A EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16672 SEKULA UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17073 SELLS A EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16885 SES FRIO SWD PEARSALL (OLMOS -A-) SELECT ENERGY SERVICES, LLC 15842 SHAAF-MOSLEY UNIT MILANO (GEORGETOWN) PEMBERTON, W. C. OIL CO., INC. 10541 SHADOW PEARSALL (AUSTIN CHALK) COX & COX PRODUCTION CO. 12428 SHADROCK, H. B. FAIRFIELD CIVRON PETROLEUM RES., LLC 10481 SHAMROCK, H. H. MINERVA-ROCKDALE 94 OPERATING, LP 01191 SHANKLE PEARSALL (AUSTIN CHALK) FRIO OIL & GAS, LTD. 13275 SHANKLIN LEASE SPILLER EAGLE FORD OIL CO., INC. 02928 SHANKLIN, H. S. SPILLER DELRAY OIL, INC. 01953 SHANKLIN, HARVEY S. SPILLER PRONTO SERVICES 01686 SHANKLIN, SOULI WILDCAT MEGAWEST ENERGY TEXAS CORP. 14957 SHANKLIN, W. R. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01103 SHANKLIN, W. R. "P" LULING-BRANYON ORIGIN PRODUCTION COMPANY, INC. 08430 SHANKLIN, W.R. LULING-BRANYON (1700) TEXAS PETROLEUM INVESTMENT CO. 11508 SHANKLIN, W.R. SPILLER EAGLE FORD OIL CO., INC. 07917 SHANNON B PEARSALL (AUSTIN CHALK) DRISCOLL S.W.D. INC. 12494 SHANNON EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16859 SHANNON, P. A.W.P. (OLMOS) WELHAUSEN OPERATING COMPANY, LP 09772 SHAPER SOMERSET GREAT PLAINS RESOURCES, INC. 11058 SHARON T SOMERSET PETRO-TEX ENERGY & EXPL.CO.,INC. 12245 SHAW SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 08408 SHAW SOMERSET SEAGULL OPERATING CO., INC. 10883 SHAW -A- SOMERSET SEAGULL OPERATING CO., INC. 10885 SHAW, ROBERT SOMERSET CALK OIL COMPANY 11352 SHAW, ROBERT SOMERSET PARKER, G.R. COMPANY, INC 10822 SHAW, ROBERT -A- SOMERSET EMERALD BAY ENERGY, INC. 11758 SHAW, ROBERT -A- SOMERSET HABANERO OPERATING, INC. 10823 SHAW, ROBERT -AA- SOMERSET EMERALD BAY ENERGY, INC. 11759 SHAW, ROBERT -AAA- SOMERSET BETA OIL CORPORATION 11760 SHAW, ROBERT -B- SOMERSET EMERALD BAY ENERGY, INC. 11721 SHAW, ROBERT -B- SOMERSET HABANERO OPERATING, INC. 11176 SHAW, ROBERT -BB- SOMERSET EMERALD BAY ENERGY, INC. 11722 SHAW, ROBERT -C- SOMERSET EMERALD BAY ENERGY, INC. 11720 SHAW, ROBERT -C- SOMERSET HABANERO OPERATING, INC. 11179 SHEARER, J. M. JR. (MIT) PEARSALL (AUSTIN CHALK) FORTUNE OPERATING, INC. 13051 SHEARRER UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16833 SHEDROCK, WALTER LA VERNIA SEACO PRODUCTION 11545 SHEELEY, JOHN LULING-BRANYON GINCO OPERATING CO. 03770 SHEELEY, JOHN LULING-BRANYON M & S RESOURCES,LLC 15259 SHEFFIELD RANCH A WEINERT (BUDA) EF ENERGY, L.L.C. 16325 SHELBY, L. UNIT GUADALUPE BEND (AUSTIN CHALK) LT OIL LLC 12617


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SHELTON CHRISTIAN (6800) D. SHEL OIL, INC. 06531 SHELTON -A- MINERVA-ROCKDALE COMANCHE WELL SERVICE CORP. 01237 SHELTON, HOWARD PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 04608 SHELTON, J. W. MINERVA-ROCKDALE ACE FIELD SERVICES, INC. 03663 SHENKIR, H. A.W.P. (OLMOS) XTO ENERGY INC. 09228 SHENKIR, H. -A- A.W.P. (OLMOS) XTO ENERGY INC. 10539 SHEPARD, H. L. MINERVA-ROCKDALE SMITH, L C PRODUCTION 03562 SHERWOOD SOMERSET MORE TEXAS OIL 11629 SHINER HEIRS PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 10412 SHINER HEIRS "A" PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 13387 SHINER HEIRS SWD PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 14712 SHINER RANCH EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15849 SHINER RANCH PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 12693 SHINER RANCH PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 13057 SHINER RANCH PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 04933 SHINER RANCH PEARSALL (BUDA LIME) GOODRICH PETROLEUM COMPANY 15878 SHINER RANCH -A- PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 04702 SHINER RANCH -B- PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 04721 SHINER RANCH -B- PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 14370 SHINER RANCH -B- PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 11540 SHINER RANCH -B- PEARSALL (BUDA LIME) BLACKBRUSH O & G, LLC 14962 SHINER RANCH -C- PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 11582 SHINER RANCH "A" PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 05726 SHINER RANCH "A" PEARSALL (BUDA LIME) BLACKBRUSH O & G, LLC 14890 SHINER RANCH 101 PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 13806 SHINER RANCH 8 PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 13807 SHINER-MORALES PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 12486 SHINING STAR RANCH EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15346 SHIRLEY ZAIONTZ EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16460 SHOOK BRISCOE RANCH (EAGLEFORD) REDEMPTION OIL & GAS, LLC 15493 SHOOK CELESTE-FAY (OLMOS 3-C) TEXOKAN OPERATING, INC. 14524 SHOOK PEARSALL (AUSTIN CHALK) NEWFIELD EXPLORATION COMPANY 14714 SHOWN, GUY PEARSALL (AUSTIN CHALK) GOLDEN CHILD, INC. 05020 SHOWN, W. GUY JR. PEARSALL (AUSTIN CHALK) GOLDEN CHILD, INC. 12337 SHUHART-MUELLER ET AL UNIT LA VERNIA (AUSTIN CHALK) OFFSPRING WELL SALVAGE 13579 SHUHART, D. V. JR. LA VERNIA (AUSTIN CHALK CREVICE) OFFSPRING WELL SALVAGE 13128 SHULLANBERGER TAYLOR-INA BLACKBIRD OIL & GAS, LLC. 08449 SIDDONS OL CARRIZO SWIFT ENERGY OPERATING, LLC 15966 SIEGELE EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 17266 SIEVERS, W.A. LULING-BRANYON KINGWOOD OIL CO; INC 05096 SIKA UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15763 SILVA PEARSALL (AUSTIN CHALK) KIDD PRODUCTION CO. 08526 SILVA -C- SOMERSET EMERALD BAY ENERGY, INC. 11166 SILVA -D- SOMERSET GREAT PLAINS RESOURCES, INC. 11192 SILVA UNIT DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16555 SILVERADO RANCH MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16485 SIMMONS SUBDIVISION UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16637 SIMMONS, CELINE GALBA (ESCONDIDA -B-) ATASCOSA EXPLORATION, LLC 15016 SIMMONS, IKE STULTING MCA PETROLEUM CORPORATION 01704 SIMMONS, L.R. CARRIZO, W (OLMOS) EAGLE ENERGY RESOURCES, LLC 10424 SIMMONS, LEROY MINERVA-ROCKDALE ANACACHO RESOURCES, INC. 10422


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SIMONS-WEST MASSIE WEST (PALUXY) RESERVOIR ENERGY, LLC 15031 SIMPER PEACH CREEK (AUSTIN CHALK) LACY 03, LLC 07467 SIMS, FRANK L. PLEASANTON, S. (CARRIZO SAND) BOMAR RESOURCES, INC. 09867 SINGER, STEVEN DALE-MCBRIDE EAGLE FORD OIL CO., INC. 07686 SISTER SUE PEARSALL (AUSTIN CHALK) BRYMER, JACK CONTR. SERV. 13003 SIVERT VELMA (ESCONDID0) EDCO PRODUCTION INC 06330 SJM UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16749 SJW EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 15768 SKEETER UNIT EAGLEVILLE (EAGLE FORD-1) CINCO NATURAL RESOURCES CORP. 17006 SKINNER, W. I. BULLOH (POTH) ERNEST OPERATING COMPANY 09433 SKLOSS, EMIL -SWD- PRUSKE (BUDA) BELLOWS OPERATING CO., L. C. 08634 SKROBARCEK, P. J. -B- LA VERNIA DOEGE, DONALD 04740 SKROBARCEK, P.J. LA VERNIA DOEGE, DONALD 00915 SKYNYRD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17126 SLADEK, A. NOACK BLACK JACK SERVICES, L.L.C. 01292 SLADEK, EUGENE NOACK BLACK JACK SERVICES, L.L.C. 01290 SLOAN PEACH CREEK (AUSTIN CHALK) LUCAS ENERGY, INC. 08135 SLOAN PEACH CREEK (BUDA) LUCAS ENERGY, INC. 14407 SLOT WILDCAT SCHLUMBERGER TECHNOLOGY CORP. 15105 SLOVER-BEEVER UNIT PEARSALL (AUSTIN CHALK) D. AND Y. YUNK PRODUCTIONS 06481 SLUDER, J. -B- LA VERNIA RAMPAGE EXPLORATION, INC. 07789 SLUDER, JAMES LA VERNIA RAMPAGE EXPLORATION, INC. 07115 SLUDER, JAMES -A- LA VERNIA RAMPAGE EXPLORATION, INC. 07222 SMART UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16960 SMELLEY, J. W. CROWN, E. (NAVARRO) STRATA STAR PETROLEUM CORP. 00332 SMITH WILDCAT DORRIS PETROLEUM, INC. 12635 SMITH (R) FAIRFIELD DRACHEN OIL COMPANY 14478 SMITH -A- BEBE (AUSTIN CHALK) WESTERN ENERGY GROUP, LLC 07041 SMITH -A- DUNLAP AUSTIN OPERATING, LLC. 08764 SMITH A UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16388 SMITH B UNIT EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16389 SMITH B UNIT SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 15173 SMITH HEIRS SALT FLAT EAGLE ENERGY ACQUISITIONS LP 14829 SMITH HEIRS SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 14820 SMITH NORTHCUTT SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 15431 SMITH UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16024 SMITH UNIT SALT FLAT, WEST T. A. W. COMPANY 08305 SMITH UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16893 SMITH-EHLINGER KYOTE GINCO OPERATING CO. 09392 SMITH-KNANDEL 1 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17046 SMITH-TINSLEY 1 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17054 SMITH-WEST UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17034 SMITH, C. -A- SALT FLAT GUINN OIL COMPANY 01529 SMITH, C. -B- SALT FLAT GUINN OIL COMPANY 01530 SMITH, C. "B" SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 14866 SMITH, COPE FAIRFIELD CRYSTAL RESOURCES, INC 02136 SMITH, E. E. FIRST SHOT (AUSTIN CHALK) CLARON CORPORATION 13667 SMITH, E. E. FIRST SHOT (AUSTIN CHALK) PROGENIES OPERATING LLC 13536 SMITH, E. E. UNIT II FIRST SHOT (AUSTIN CHALK) PROGENIES OPERATING LLC 13537 SMITH, E.E. UNIT VI FIRST SHOT (AUSTIN CHALK) OMEGA ENERGY, LLC 13666 SMITH, ET AL EL VIEJO (SERPENTINE) HANCORP, INC. 12067


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SMITH, GUY MUIL (QUEEN CITY SAND) WEEKS, C. W. 01278 SMITH, HORACE JACOB PETRO-GUARD PRODUCTION,L.L.C. 10106 SMITH, HORACE -A- LA VERNIA LAKE CHEROKEE PRODUCTION, LLC 00865 SMITH, HORACE -B- LA VERNIA LAKE CHEROKEE PRODUCTION, LLC 01844 SMITH, J. -B- SALT FLAT B. J. P. OPERATING 01517 SMITH, JOEY WILDCAT RILEY EXPLORATION, LLC 15810 SMITH, JOEY PEARSALL (AUSTIN CHALK) 1776 ENERGY OPERATORS, LLC 12585 SMITH, LEROY LA VERNIA (AUSTIN CHALK CREVICE) MIDSTATES CORPORATION 10254 SMITH, LUTHER LA VERNIA RAINER ENERGY, INC. 00827 SMITH, ORTELL FENTRESS (1750) HIGHER STANDARD OIL COMPANY,INC. 15285 SMITH, OXSHEER ESTATE MINERVA-ROCKDALE OMNI OIL & GAS, INC. 11461 SMITH, POWIE LA VERNIA VILLARREAL, VICTOR P. 00925 SMITH, R.L. SALT FLAT EAGLE FORD OIL CO., INC. 07869 SMITH, W. HRS. SALT FLAT EAGLE ENERGY ACQUISITIONS LP 01508 SMOTHERS-GONZALES SOMERSET GREAT PLAINS RESOURCES, INC. 10911 SMR JV EF EAGLEVILLE (EAGLE FORD-1) SWIFT ENERGY OPERATING, LLC 15843 SNEED BUCHANAN EAGLE FORD OIL CO., INC. 03131 SNEED -A- BUCHANAN SPILLER, J.A. 13662 SNOGA MARCELINA CREEK (AUSTIN CHALK) DOMINION PRODUCTION COMPANY, LLC 15232 SNOGA MCCLAIN (BUDA) EXXCEL OPERATING COMPANY 05405 SNOGA, A. ET AL FLORESVILLE, S. (AUSTIN CHALK) REICHMANN PETROLEUM CORP. 10416 SNOW UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 17291 SNOWDEN UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 17321 SNOWMASS DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16524 SO. TEX. SYNDICATE LEASE #39 WASHBURN RANCH,W.(WILCX 5100,W.) PYLE PETROLEUM, INC. 03947 SO. TEXAS SYNDICATE -A- BIG MULE (5500 SAND) TRACKER OIL & GAS, INC. 08894 SO. TEXAS SYNDICATE #39 WASHBURN RANCH (5500 SD. W) PYLE PETROLEUM, INC. 14348 SOECHTING DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16521 SOECHTING STATE UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16623 SOECHTING UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16502 SOECHTING UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16615 SOECHTING UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16624 SOLANSKY PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16185 SOLIZ BRISCOE RANCH (EAGLEFORD) SANCHEZ OIL & GAS CORPORATION 16585 SOMERSET BUILDERS TAYLOR UNIT SOMERSET 3-L DRILLING 03452 SOMMER, O. A. /100AC./ LA VERNIA DOEGE, DONALD 03261 SOUTH PENA CREEK UNIT PENA CREEK (SAN MIGUEL 3RD) ENERGYQUEST II, LLC 10690 SOUTH SPUR STATE BRISCOE RANCH (EAGLEFORD) ANADARKO E&P ONSHORE LLC 15207 SOUTH TEXAS SYNDICATE BIG MULE (5500 SAND) B.P. PRODUCTIONS INC. 14907 SOUTH TEXAS SYNDICATE JACK FROST (CROCKETT) CANYON CREEK RESOURCES, LLC 03224 SOUTH TEXAS SYNDICATE RODRIQUEZ NORTH (SHALLOW) ESTA COMPANY, INC. 07837 SOUTH TEXAS SYNDICATE WASHBURN RANCH (WILCOX 5200) TRACKER OIL & GAS, INC. 08600 SOUTH TEXAS SYNDICATE WASHBURN RANCH (5450) TEXOKAN OPERATING, INC. 04191 SOUTH TEXAS SYNDICATE WASHBURN RANCH,W. (WILCOX 5330W) TRACKER OIL & GAS, INC. 09024 SOUTH TEXAS SYNDICATE -A- GREEN BRANCH WHITING OIL AND GAS CORPORATION 14547 SOUTH TEXAS SYNDICATE -A- GREEN BRANCH (QUEEN CITY) WHITING OIL AND GAS CORPORATION 06497 SOUTH TEXAS SYNDICATE -A- GREEN BRANCH (4600) WHITING OIL AND GAS CORPORATION 06008 SOUTH TEXAS SYNDICATE -A- GREEN BRANCH (5500) WHITING OIL AND GAS CORPORATION 14577 SOUTH TEXAS SYNDICATE -A- WASHBURN, EAST (4600) BUFFALO OIL CORP. 07066 SOUTH TEXAS SYNDICATE -B- CAMARON RANCH (QUEEN CITY) WHITING OIL AND GAS CORPORATION 04971 SOUTH TEXAS SYNDICATE -B- JOURDANTON (SPARTA SAND) WHITING OIL AND GAS CORPORATION 14580


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ SOUTH TEXAS SYNDICATE -B- LITTLE ALAMO WHITING OIL AND GAS CORPORATION 03694 SOUTH TEXAS SYNDICATE -C- GREEN BRANCH (4600) WHITING OIL AND GAS CORPORATION 09882 SOUTH TEXAS SYNDICATE -G- GREEN BRANCH (WILCOX 2-D) WHITING OIL AND GAS CORPORATION 14548 SOUTH TEXAS SYNDICATE -G- GREEN BRANCH (6100) WHITING OIL AND GAS CORPORATION 14439 SOUTH TEXAS SYNDICATE -L- CAMARON RANCH (QUEEN CITY) WHITING OIL AND GAS CORPORATION 13513 SOUTH TEXAS SYNDICATE -113- WASHBURN RANCH, WEST (5450) TRACKER OIL & GAS, INC. 08450 SOUTH TEXAS SYNDICATE -490 TELEPHONE POST (5450 SAND) TRACKER OIL & GAS, INC. 10437 SOUTH TEXAS SYNDICATE 104-5 BIG MULE (OLMOS 8850) WHITE OAK OPERATING COMPANY LLC 14283 SOUTH TEXAS SYNDICATE 1391-42 WASHBURN, EAST (5100) WHITE OAK OPERATING COMPANY LLC 14309 SOUTH TEXAS SYNDICATE 1391-42 WASHBURN RANCH (5500 SD.) CARRIZO OIL & GAS, INC. 14300 SOUTH TEXAS SYNICATE 1391-42 WASHBURN, EAST (4800) WHITE OAK OPERATING COMPANY LLC 14799 SOUTHERN HUNTER EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 15278 SOUTHERN PACIFIC CO. SALT FLAT M & S RESOURCES,LLC 03172 SOVEIDA-OBREGON PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 12876 SPAHN FARMS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15376 SPAHNMAN UNIT FIRST SHOT (AUSTIN CHALK) EOG RESOURCES, INC. 16212 SPARKS -A- SOMERSET PAISANO PRODUCTION, INC. 10757 SPARKS, CECIL SOMERSET PAISANO PRODUCTION, INC. 11441 SPARKS, CECIL R. ET UX SOMERSET RAINER ENERGY, INC. 10816 SPAULDING, J. R. MINERVA-ROCKDALE ACE FIELD SERVICES, INC. 09064 SPEARS SOMERSET CIVRON PETROLEUM RES., LLC 11563 SPEER UNIT PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14881 SPENCER WSW WILDCAT OAK VALLEY OPERATING, LLC 16378 SPENCER, D. D. SALT FLAT, WEST BAIR'S LEASE SERVICE, INC. 07016 SPICE HOSTETTER (ARGO) KEBO OIL & GAS, INC. 11780 SPIECKERMANN, ALMA PILGRIM (AUSTIN CHALK) ZACHRY EXPLORATION, INC. 12077 SPINACH ELAINE UNIT SPINACH (ELAINE) HUGHES, DAN A. COMPANY, L.P. 10149 SPRADLIN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16797 SPRAGUE, DELIA DUNLAP KIDD PRODUCTION CO. 11512 SPRINGS, GILBERT F. LA VERNIA LOTT PRODUCTION COMPANY 06055 SQUARE, BLANCH SALT FLAT W.W. ENERGY 03133 SRALLA UNIT EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16001 ST JOHN SOMERSET GREAT PLAINS RESOURCES, INC. 11148 ST. JOHN, S. SOMERSET GREAT PLAINS RESOURCES, INC. 01643 ST. LOUIS UNION TRUST CO. RODRIQUEZ (SHALLOW) GGG OIL COMPANY, LTD. 01434 ST. NATL. BK. OF CORPUS CHRISTI CHARLOTTE (NAVARRO) FREEMAN, J. L., OPER. 03320 STACY NIXON ALCOR ENERGY, INC. 12605 STACY PEARSALL (AUSTIN CHALK) JIN PETROLEUM LLC 07643 STACY & SONS ET AL UNIT PEARSALL (AUSTIN CHALK) GINCO OPERATING CO. 13547 STACY, W.E. & SON PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 12523 STAFFORD UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15894 STAIR-PROCTOR UNIT 1 LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 03685 STAIR, O. F. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01105 STAIR, O. F. 4HST LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14539 STAIR, O.F. LULING-BRANYON (1700) TEXAS PETROLEUM INVESTMENT CO. 10171 STANDIFER UNIT PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 17305 STANDIFER-STONE, M.L. PEARSALL (AUSTIN CHALK) RILEY EXPLORATION, LLC 12870 STANDIFER, DOYLE EST. PEARSALL (AUSTIN CHALK) BOTASCH OPERATING, LLC 13002 STANDIFER, E. T. BIG WELLS, E. (UPPER SAN MIGUEL) KEY ENERGY SERVICES, LLC 11816 STANFIELD SOMERSET SEAGULL OPERATING CO., INC. 03389 STANFIELD, ETAL, UNIT SALT FLAT OFFSPRING WELL SALVAGE 03075


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ STANISLAW, JOE ESTATE CHEROKEE (NAVARRO) HOUSTON PETROLEUM COMPANY 09296 STAPP, W.E. JOURDANTON (RECKLAW) RALYN CORP. 08011 STARBOARD BIG FOOT (OLMOS D-3 SAND) IMPETRO OPERATING LLC 16063 STARR-PEP LULING-BRANYON NORTHRIDGE EXPLORATION, INC. 04874 STARR, VALLEN LULING-BRANYON NORTHRIDGE EXPLORATION, INC. 03699 STARR, VAUEN -A- LULING-BRANYON NORTHRIDGE EXPLORATION, INC. 04011 STARRAK UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17104 STATE SPILLER DELRAY OIL, INC. 03174 STATE OF TEXAS & MILLS, L. H. KAYE (NAVARRO) W.W. ENERGY 02171 STATON, C.D. TENNEY CREEK GALLERY PETROLEUM LLC 09408 STEDMAN, H.H. MINERVA-ROCKDALE STEDMAN OIL & GAS CO. 05704 STEELE SOMERSET BEAULAH LAND OIL COMPANY 10891 STEEN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15480 STEEN-SCRUGGS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16030 STEGLICH, J. C. SERBIN (WILCOX) SELLERS LEASE SERVICE, INC. 11971 STEINLE-PEELER UNIT JOURDANTON (QUEEN CITY) PULLIN LEASE SERVICE, INC. 14188 STEINLE, A. N. -B- CHARLOTTE (NAVARRO) ROLAND OIL COMPANY 03307 STEINLE, LEON JOURDANTON VIRTEX OPERATING COMPANY, INC. 13470 STEPAN KOVAR (NAVARRO) CENTEX DEVELOPMENT 06301 STEPHENSON LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16699 STEPHENSON,MARGARET PEARSALL (AUSTIN CHALK) CORE E & P CORP. 12167 STEUBING PEARSALL (AUSTIN CHALK) PATTERSON ENERGY CORPORATION 12487 STEVENS, R. W. SOMERSET PETROSAURUS, INC. 05953 STEWART PEARSALL (AUSTIN CHALK) RICOCHET ENERGY, INC. 15635 STEWART - MICHAEL UNIT PEARSALL (AUSTIN CHALK) RICOCHET ENERGY, INC. 16563 STEWART - MICHAEL 2H UNIT PEARSALL (AUSTIN CHALK) RICOCHET ENERGY, INC. 16397 STEWART-FINLEY UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15686 STEWART-GIESE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15600 STEWART-HENKE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16385 STEWART-MENEFEE UNIT III PEARSALL (AUSTIN CHALK) CALTEX ENERGY CO. 13317 STEWART-MENEFEE UNIT IV PEARSALL (AUSTIN CHALK) CALTEX ENERGY CO. 12638 STEWART, C. SUTIL (BUDA) REAVIS, TOMMY 08142 STEWART, MINNIE SCOTTY (BARTOSH SAND) RICKAWAY ENERGY, CORP. 01572 STIEGLER, HAROLD TAYLOR-INA S.O.C. INVESTORS, INC. 08445 STIEREN, GEORGIA LA VERNIA THREE J ENERGY, INC. 08417 STILES, H. A. THRALL THRALL OPERATING COMPANY, INC. 01739 STING RAY A EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 16983 STOBAUGH-DAWE EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17121 STOBAUGH-SMITH EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17122 STOCK, DORIS LA VERNIA NEW BEGINNING 06519 STOCKARD SOMERSET U. D. MAN, INC. 10864 STOELTJE MARCELINA CREEK (AUSTIN CHALK) LUCAS ENERGY, INC. 15196 STOKES, O.K. SOMERSET BLACK JACK SERVICES, L.L.C. 11292 STOLLE ET AL GAS UNIT FASHING (EDWARDS LIME -A-) XTO ENERGY INC. 14493 STONE EAGLEVILLE (EAGLE FORD-1) OXY USA INC. 16686 STONE EL INDIO, N.(OLMOS) WILLIAMSON OPERATING CO. 11829 STONE RANCH WILDCAT JOINT RESOURCES COMPANY 14774 STOPPELBERG WILDCAT IMPETRO OPERATING LLC 15066 STOREY EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16156 STOREY STOREY, S. (WILCOX 5450) ESCONDIDO RESOURCES II, LLC 15001 STOREY TRES ENCANTO (ESCONDIDO) ESCONDIDO RESOURCES II, LLC 14953


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ STOREY & REED STOREY, S. (WILCOX 5450) TEXOKAN OPERATING, INC. 13854 STOREY UNIT 2 EAGLEVILLE (EAGLE FORD-1) BHP BILLITON PET(TXLA OP) CO 17196 STOREY-REED EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15439 STOREY, H. D. STOREY (5250) VIRTEX OPERATING COMPANY, INC. 04231 STOREY, H. D. STOREY (5600) VIRTEX OPERATING COMPANY, INC. 04244 STOREY, H.D. STOREY (4000) VIRTEX OPERATING COMPANY, INC. 12238 STOREY, H.D. STOREY (5150) VIRTEX OPERATING COMPANY, INC. 09896 STOREY, HELEN CARRIZO BUFFALO OIL CORP. 12244 STORM WRK (JACKSON 2250) C. M. OIL CORPORATION 14308 STORY RANCH WILDCAT FREEPORT-MCMORAN OIL & GAS LLC 16879 STORY RANCH EAGLEVILLE (EAGLE FORD-1) FREEPORT-MCMORAN OIL & GAS LLC 16448 STOUP, ESTATE OF THELMA B. FAIRFIELD EXXCEL OPERATING COMPANY 03759 STOUP, H. C. FAIRFIELD DIAMOND TRADING & PIPELINE CORP 02184 STOUP, HUGH C. FAIRFIELD EXXCEL OPERATING COMPANY 06390 STOUT PEARSALL (AUSTIN CHALK) U.S. ENERCORP, LTD. 15343 STOUT -A- PEARSALL (AUSTIN CHALK) SABINAL RESOURCES, INC. 13743 STOUT "A" PEARSALL (AUSTIN CHALK) U.S. ENERCORP, LTD. 06671 STRAIT PEARSALL (AUSTIN CHALK) STP PRODUCTION, LLC 14494 STREETMAN, H. S. LA VERNIA TEXAS COASTAL RESOURCES LLC 00869 STREETMAN, H. S. "A" LA VERNIA TEXAS COASTAL RESOURCES LLC 00823 STRELSKY MINERVA-ROCKDALE ERNEST OPERATING COMPANY 01263 STRELSKY -33- MINERVA-ROCKDALE PENROD OIL COMPANY OF TEXAS, INC 01218 STREY, E. LA VERNIA PERKINS, EUGENE O. 06506 STREY, ELTON F. LA VERNIA SEACO PRODUCTION 06335 STROUD LA VERNIA, WEST (AUSTIN CHALK) PULLIN LEASE SERVICE, INC. 13746 STROUD, H. C. SCOTTY (BARTOSH SAND) RICKAWAY ENERGY, CORP. 01573 STROUD, W. KAYE (NAVARRO) THREE J ENERGY, INC. 00770 STRUNK ECKERT GINCO OPERATING CO. 00540 STS A.W.P. (OLMOS) BLACKBRUSH O & G, LLC 14821 STS -D- BIG MULE (5500 SAND) F M OIL CO. 08865 STS A - 1391 EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 15678 STS A - 692 EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 15804 STS NORTH UNIT 5 EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 17289 STS NORTH UNIT 6 EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 17297 STS UNIT A.W.P. (OLMOS) BLACKBRUSH O & G, LLC 16402 STS-E- BIG MULE (5500 SAND) TRACKER OIL & GAS, INC. 09199 STUART-NELSON UNIT SALT FLAT, WEST BAIR'S LEASE SERVICE, INC. 07944 STUART-PERLITZ RANCH INDIO TANKS (PEARSALL) CABOT OIL & GAS CORPORATION 17256 STUBBLEFIELD WILDCAT JANCO OPERATING 12457 STUBBLEFIELD SOMERSET GREAT PLAINS RESOURCES, INC. 10809 STUBBLEFIELD SOMERSET GREEN STAR 10756 STUBBLEFIELD-BREAZEALE -A- SOMERSET EISE OIL, INC. 11059 STUBBLEFIELD-BREAZEALE -B- SOMERSET EISE OIL, INC. 11060 STUBBLEFIELD-BREAZEALE -C- SOMERSET EMERALD BAY ENERGY, INC. 11165 STUBBLEFIELD-BREAZEALE -D- SOMERSET EISE OIL, INC. 11257 STUBBLEFIELD-BREAZEALE -F- SOMERSET EISE OIL, INC. 11061 STUBBLEFIELD-BREAZEALE CC SOMERSET EMERALD BAY ENERGY, INC. 11855 STUBBLEFIELD, DAVID C. SOMERSET EISE OIL, INC. 10780 STULTING, N. C. STULTING SELLERS LEASE SERVICE, INC. 01705 STUMBERG ESTATE BRISCOE RANCH (EAGLEFORD) MURPHY EXPL. & PROD. CO. - USA 16109 STUMBERG RANCH CATARINA MAG (AUSTIN CHALK) TEXOKAN OPERATING, INC. 13518


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ STUMBERG STATE DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16252 STUMBERG STATE UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16337 STUMBERG STATE UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16239 STYLES, HERMAN LULING-BRANYON OFFSPRING WELL SALVAGE 07124 STYLES, P. A. LULING-BRANYON SHWJ OIL & GAS CO., INC. 03332 SUGARLAND PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15164 SUGARLAND DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15585 SULAK, T. MINERVA-ROCKDALE TAHITI PTRS ENRGY SOLUTIONS CORP 08658 SULLIVAN SOUTHTON SULLIVAN, SAMUEL 10555 SULTENFUSS UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16546 SULTENFUSS, LAWRENCE F. GOOD LUCK (SAN MIGUEL) GARDNER OIL & GAS CO. 04241 SUMBERA LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16844 SUMBERA UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16845 SUMERLIN, JESSE B. JR. -B- SOMERSET SEEKER OIL COMPANY II, INC. 10848 SUMMERLIN, JESSE B. JR. -A- SOMERSET SEEKER OIL COMPANY II, INC. 10845 SUN MARK EXPLORATION SALT FLAT, WEST CASTILLO OIL COMPANY LLC 07875 SUNFLOWER UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16809 SUTPHEN, CHARLES M. OIL UNIT FLORESVILLE, S. (AUSTIN CHALK) PLUM OIL & GAS 08122 SUTTON SUSSEX E. CROWN FLOOD UNI CROWN, E. (NAVARRO) ROLAND OIL COMPANY 03387 SUTTON, NELL ESTATE VELMA (ESCONDID0) WEN-BE 09084 SVOBODA, J.A. DUNLAP EAGLE FORD OIL CO., INC. 09662 SWAIM EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 15429 SWAIM MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15874 SWAIM UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15897 SWAIM UNIT I MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15627 SWAIM UNIT II MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15951 SWAIM 33 SAN MIGUEL CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 14815 SWAIM 58 SAN MIGUEL CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 15172 SWAIM 60 BUCK WHEAT (WALES) WYNN-CROSBY OPERATING, LTD. 15033 SWAIM-WHEELER-DOUBLE K UNIT SAN MIGUEL CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 15211 SWD #7 O/A SALVAGE DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02982 SWEENEY, CAMILLE PEARSALL (AUSTIN CHALK) U.S.A. PLUGGING COMPANY 13240 SWEENEY, CAMILLE TOUCHSTONE (OLMOS -A-) U.S.A. PLUGGING COMPANY 12964 SWEET UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15349 SWENSON EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 15388 SWENSON KUDU, NORTH (WALES) MANTI OPERATING COMPANY 14843 SWENSON 'A' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16787 SWENSON 'B' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16966 SWENSON 'C' EAGLEVILLE (EAGLE FORD-1) COMSTOCK OIL & GAS, LP 16108 SWENSON, ARTHUR A. KIMBRO ALTEX PETROLEUM, INC. 07114 SWIENTEK, THEODORE CINDY ANN (AUSTIN CHALK, OIL) ALCOR ENERGY, INC. 08401 SWIGART -B- LULING-BRANYON GINCO OPERATING CO. 10567 SWIGART "12" LULING-BRANYON M & S OIL INC. 09156 SWIGART SWD LULING-BRANYON GINCO OPERATING CO. 10598 SWIGART, -E- LULING-BRANYON GINCO OPERATING CO. 11543 SWIGGART, T.E. LULING-BRANYON GINCO OPERATING CO. 08724 SWR A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 14343 SWR "B" A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 14214 SYDNEY UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16862 SZALWINSKI UNIT MARCELINA CREEK (AUSTIN CHALK) HUNT OIL COMPANY 07028 T KIRK UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17324


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ T. R. MARSHALL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17050 T.R.U. UNIT W.C. FINCH (SIMSBORO 1900) THREE FORKS OPERATING CO, LLC 12071 TABOR 11H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14706 TABOR 8H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14699 TABOR 9H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14687 TABOR, ELSIE M. SOMERSET TABOR, ELSIE M. THE ESTATE OF 10771 TABOR, W H 7-H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14572 TABOR, W H 6-H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14467 TABOR, W. H. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01107 TABOR, W. H. 12H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14910 TACO UNIT SOMERSET PAISANO PRODUCTION, INC. 10768 TADLOCK, A. U. -A- DARST CREEK (BUDA) GARRISON LTD. 02823 TADLOCK, A. U. -C- DARST CREEK (BUDA) GARRISON LTD. 02748 TADLOCK, H. H., -B- DARST CREEK (BUDA) DJ EXPLORATION, INC. 02747 TADLOCK, H. H., ETAL DARST CREEK (BUDA) GARRISON LTD. 02720 TAG UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15719 TALBUTT PEARSALL (AUSTIN CHALK) TEXOKAN OPERATING, INC. 12829 TALBUTT TRUST EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 15514 TALLEY BIG FOOT IMPETRO OPERATING LLC 09653 TALLEY DALE-MCBRIDE TRINIDAD PETROLEUM, INC. 06113 TALLEY -B- DALE-MCBRIDE TRINIDAD PETROLEUM, INC. 12285 TALLEY "X" DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 14860 TALLEY-A- DALE-MCBRIDE TRINIDAD PETROLEUM, INC. 12284 TALLEY, E. H. DALE-MCBRIDE HAZELETT OIL, INC. 04103 TALLEY, J. W. NIXON ORIGIN PROD CO GONZALES PROP LLC 07939 TALLY UNIT FENTRESS (1750) HIGHER STANDARD OIL COMPANY,INC. 14786 TAMPKE, BILL TAYLOR-INA TAMPKE SERVICE CO. 14507 TARPON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16634 TATE, GORDEN TATE BIG FOOT OILEX INT'L INVESTMENTS, INC. 14093 TAUBER UNIT A DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16375 TAUBER UNIT C DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16639 TAUBER UNIT D DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16588 TAUBER UNIT E DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16490 TAUCH, DAVID R. ET UX WAELDER, SOUTH (ESCONDIDO) PREMIUM EXPLORATION COMPANY 10550 TAYLOR EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16274 TAYLOR MINERVA-ROCKDALE TEJAS EXPLORATION INC. 09139 TAYLOR SOMERSET BLACK JACK SERVICES, L.L.C. 12709 TAYLOR 'V' SOMERSET QUEST RESEARCH & DEV. CORP. 10866 TAYLOR-KING ANDY BROWN (BUDA) OUTLINE OIL CORP. 12280 TAYLOR/BERRY PEARSALL (AUSTIN CHALK) VAC-U-LIFT PRODUCTION CO.,INC. 13272 TAYLOR, H.D. A.W.P. (OLMOS) XTO ENERGY INC. 09248 TAYLOR, HOWARD TENNEY CREEK ALTA MESA SERVICES, LP 10081 TAYLOR, KENNETH E. SOMERSET QUEST RESEARCH & DEV. CORP. 03662 TAYLOR, LARRY SALT FLAT ALTA MESA SERVICES, LP 09179 TE GONZALES SWD PEACH CREEK (AUSTIN CHALK) CLEAR WATER RESOURCES LLC 17306 TEAGUE UNIT B ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16935 TEAL TEAL S. (WALES) MILAGRO EXPLORATION, LLC 12005 TEAL -P- A.W.P. (OLMOS) MILAGRO EXPLORATION, LLC 10458 TEAL MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16557 TEAL RANCH EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 15536 TEAM BANK FIRST SHOT (AUSTIN CHALK) LUCAS ENERGY, INC. 13638


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ TEAS, MITTIE LULING-BRANYON E & W OIL, INC. 01117 TEAS, MITTIE /15.0 ACRES/ LULING-BRANYON AUSTIN OPERATING, LLC. 01116 TEBO H.G.L. (ELAINE SAND) CML EXPLORATION, LLC 15947 TEEL THIRTEEN, EAST (3600 OLMOS) HAMILTON, CLAY 15146 TEJAS DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16721 TEJAS UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16878 TEMPERO, MABEL ACLETO CREEK (POTH SAND) LORENZ & BOSANKO 09303 TENAMPA FAIRFIELD DRACHEN OIL COMPANY 14583 TENBERG, G. F. FIVE MILE (WILCOX, UPPER) CENTEX DEVELOPMENT 14878 TEQUESQUITE RANCH TEQUESQUITE RANCH (MCKNIGHT) PHILLIPS, JACK L. CO. 16180 TERRA LOCUS SERVICE -A- LA VERNIA J.A.G. OIL & GAS 10086 TERRELL, H. A. LULING-BRANYON LULING O&G LLC 03942 TERRY, C.E. MINERVA-ROCKDALE TEJAS EXPLORATION INC. 11963 TEXAS CHRISTIAN UNIVERSITY -A- STOREY (5150) BUFFALO OIL CORP. 07441 TEXAS OSAGE ET AL ELAINE (AUSTIN CHALK) WHITE MARLIN OPERATING CO, LLC 17285 TEXAS POWER & LIGHT MINERVA-ROCKDALE PENROD OIL COMPANY OF TEXAS, INC 10435 TEXAS POWER & LIGHT COMPANY MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 07356 TEXAS TEA PILGRIM (AUSTIN CHALK) FORD, DON H. & ASSOC. 13911 TEXAS TWO STEP EAGLEVILLE (EAGLE FORD-1) MODERN EXPLORATION, INC. 15272 TEXAS-OSAGE LORENZO (AUSTIN CHALK) SANCHEZ OIL & GAS CORPORATION 15116 TG UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 15835 THALMANN BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15289 THALMANN PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15501 THAXTON SASPAMCO DIAMONDBACK OIL COMPANY 10085 THELMA BRITE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15691 THERIOT UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16606 THETFORD A.W.P. (OLMOS) MILAGRO EXPLORATION, LLC 09921 THETFORD-TEAL UNIT NO. 1 A.W.P. (OLMOS) TEXCAL ENERGY (GP) LLC 10136 THIEL, C.C. SOMERSET GREAT PLAINS RESOURCES, INC. 11095 THIEL, M.C. SOMERSET GREAT PLAINS RESOURCES, INC. 11204 THIER UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16741 THOMAS & WHITTINGTON DUNLAP B. J. P. OPERATING 03615 THOMAS & WHITTINGTON DUNLAP EAGLE FORD OIL CO., INC. 03895 THOMAS & WHITTINGTON -B- DUNLAP B. J. P. OPERATING 00521 THOMAS & WHITTINGTON -D- DUNLAP SHEFTS & SHEFTS, INC. 08064 THOMAS & WHITTINGTON FEE DUNLAP SHEFTS & SHEFTS, INC. 03684 THOMAS CROZIER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16053 THOMAS E. CLIFTON MT. EDEN (CARRIZO-WILCOX, LO.) SELLERS LEASE SERVICE, INC. 14923 THOMAS UNIT BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15452 THOMAS-HARDEMAN LULING-BRANYON AUSTIN OPERATING, LLC. 01025 THOMAS, HILTON O. ACLETO CREEK (POTH B) ALCOR ENERGY, INC. 06973 THOMAS, HILTON O. -B- ACLETO CREEK (POTH C) P.S.N. PETROLEUM, INC. 08263 THOMPSON PEACH CREEK (AUSTIN CHALK) EXPRESS OIL CO. 07118 THOMPSON PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14742 THOMPSON PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, INC. 05037 THOMPSON #1 PEARSALL (AUSTIN CHALK) SOUTH OIL, INC. 12410 THOMPSON "A" PEARSALL (AUSTIN CHALK) FIRST ROCK, INC. 13139 THOMPSON A UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17186 THOMPSON RANCH BRISCOE RANCH (EAGLEFORD) EF ENERGY, L.L.C. 15853 THOMPSON UNIT PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14845 THOMPSON-NICHOLS SOMERSET GREAT PLAINS RESOURCES, INC. 08261


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ THOMPSON, B.F. PRUITT PEARL, BILL H. PRODUCTIONS, INC. 11649 THOMPSON, C. SPILLER GINCO OPERATING CO. 03501 THOMPSON, C. M. STACY (OLMOS -A-) RICKAWAY ENERGY, CORP. 01892 THOMPSON, C. M., -B- STACY (OLMOS -A-) RICKAWAY ENERGY, CORP. 03065 THOMPSON, C. S. -A- BIG FOOT JENEX PETROLEUM CORPORATION 00107 THOMPSON, C.R. BIG FOOT OILEX INT'L INVESTMENTS, INC. 14061 THOMPSON, C.R. "A" BIG FOOT OILEX INT'L INVESTMENTS, INC. 14062 THOMPSON, C.R. "B" BIG FOOT OILEX INT'L INVESTMENTS, INC. 14063 THOMPSON, C.R. "C" BIG FOOT OILEX INT'L INVESTMENTS, INC. 14064 THOMPSON, C.R. "D" BIG FOOT OILEX INT'L INVESTMENTS, INC. 14065 THOMPSON, CAROLYN A. RONNIE (QUEEN CITY SAND) HINES, ARNOLD L. 11859 THOMPSON, DENNIS BIG FOOT JENEX PETROLEUM CORPORATION 00108 THOMPSON, F. B. CHARLOTTE (NAVARRO) AVIGHNA ENERGY INC 03322 THOMPSON, F. B. CHARLOTTE (NAVARRO) WEN-BE 03308 THOMPSON, GEORGE LA VERNIA AGAPE ENERGY INC. 04921 THOMPSON, J. C., JR. PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 15243 THOMPSON, JUNE KYOTE GINCO OPERATING CO. 09715 THOMPSON, PATTY UNIT I PEARSALL (AUSTIN CHALK) EAGLE FORD OIL CO., INC. 12579 THOMPSON, WEBB -B- BIG FOOT JENEX PETROLEUM CORPORATION 00111 THOMPSON, WEBB -B- BIG FOOT (OLMOS D-3 SAND) JENEX PETROLEUM CORPORATION 00123 THOMS MARCELINA CREEK (BUDA) FIRST ROCK, INC. 12441 THOMS -C- MARCELINA CREEK (BUDA) FIRST ROCK, INC. 13517 THOMS "C" MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 14402 THORNE, LULA O., EST SOMERSET PETROSAURUS, INC. 03340 THORNHILL UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16651 THORNTON FIEDLER BROTHERS LEWIS PETRO PROPERTIES, INC. 09511 THREADGILL L BATEMAN (AUSTIN CHALK) TRINIDAD PETROLEUM, INC. 13544 THREADGILL, ETAL MINERVA-ROCKDALE NAVARRO EXPLORATION CO., INC. 03498 THREADGILL, R. V. BATEMAN (AUSTIN CHALK) FOYORO ENERGY, LLC 13307 THREADGILL, R. V. -C- BATEMAN (AUSTIN CHALK) ALL IN ENERGY PRODUCTION, LLP 12227 THREADGILL, R.V. -B- BATEMAN (AUSTIN CHALK) TRINIDAD PETROLEUM, INC. 12206 THREADGILL,V. DALE-MCBRIDE FOYORO ENERGY, LLC 10205 THURMAN BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15341 THURMAN NORTH LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15614 THURMAN, A.V. FAIRFIELD GREAT PLAINS RESOURCES, INC. 10218 TICK, STEVE SOMERSET GREAT PLAINS RESOURCES, INC. 01644 TICK, STEVE SOMERSET PETROSAURUS, INC. 10947 TIDWELL EAST ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16636 TIGER UNIT WILDCAT ANADARKO E&P ONSHORE LLC 14332 TILDEN GPI TILDEN, S. (WILCOX H2S DISPOSAL) REGENCY FIELD SERVICES LLC 14827 TILDEN HWY 72 EAGLEVILLE (EAGLE FORD-1) PYOTE WELL SERVICE, LLC 17227 TILLER LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14461 TILLER #1 PEARSALL (AUSTIN CHALK) HILL PRODUCTION COMPANY NO. 2 11419 TILLER-BRISCOE "D" SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 15032 TILLER, D. G. SALT FLAT EAGLE FORD OIL CO., INC. 01462 TILLER, D. G. (SCULLY) SALT FLAT EAGLE FORD OIL CO., INC. 14519 TILLER, D. G. -A- SALT FLAT EAGLE FORD OIL CO., INC. 01463 TILLER, FLOYD SALT FLAT B. J. P. OPERATING 01475 TILLER, FLOYD SALT FLAT LULING O&G LLC 02968 TILLER, FLOYD -A- SALT FLAT LULING O&G LLC 01488 TILLER, J. B. SALT FLAT DST OIL COMPANY 01498


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ TILLER, J. B. SALT FLAT JAVELINA OIL & GAS CO. 01485 TILLER, J. B. SALT FLAT LULING O&G LLC 01443 TILLER, J. R. SALT FLAT DST OIL COMPANY 01499 TILLER, J. R. SALT FLAT FLAMINGO OIL & GAS 11747 TILLER, J. R. -C- SALT FLAT LULING O&G LLC 01486 TILLER, J. R., -B- TENNEY CREEK COTTON OIL CO. 03637 TILLER, J.R. SALT FLAT DST OIL COMPANY 11718 TILLER, J.R. -C- SALT FLAT JAVELINA OIL & GAS CO. 14731 TILLER, JOE B., MRS. SALT FLAT W.W. ENERGY 03017 TILLER, L. L. DUNLAP LLT ENERGY, INC. 11950 TILLER, M. SALT FLAT HARDIN ENERGY CO., INC. 01456 TILLER, T. A. SALT FLAT AUSTIN OPERATING, LLC. 01487 TILLER, T. A. SALT FLAT EAGLE ENERGY ACQUISITIONS LP 14911 TILLER, T. A. SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 14831 TILLER, W. J. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01108 TILLER, W. M. SALT FLAT B. J. P. OPERATING 01489 TILLEY, D. DUNLAP BAIR'S LEASE SERVICE, INC. 03789 TIMMONS BRUSHY CREEK (SERPENTINE) CADDO ENERGY CO., INC. 05301 TINSLEY EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16222 TINSLEY "A" PILGRIM (AUSTIN CHALK) MEXAMERICAN WELL SERVICE CORP. 13442 TINSLEY-COOK 1 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16941 TINSLEY-COOK 2 EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16973 TINSLEY-LAWLEY EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16099 TINSLEY-RAEKE EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16245 TINSLEY-VANA EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16174 TINSLEY-WILLIAMS EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 17041 TINSLEY, J.R. PILGRIM (AUSTIN CHALK) ENDEAVOR ENERGY RESOURCES L.P. 05047 TITZMAN STOCKDALE, S. (AUSTIN CHALK) CALOCO ENERGY, INC. 07504 TITZMAN, AUGUST L. OIL UNIT STOCKDALE, S. (AUSTIN CHALK) PONTIAC OIL, INC. 07248 TITZMAN, TITIAN CINDY ANN (AUSTIN CHALK, OIL) JENEX PETROLEUM CORPORATION 11692 TLAPEK PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14956 TOALSON PEARSALL (AUSTIN CHALK) ALAMO OPERATING COMPANY, L. C. 16154 TOALSON PEARSALL (AUSTIN CHALK) TRANS-CANADA ENTRPRSES OF TX INC 08326 TOALSON "B" PEARSALL (AUSTIN CHALK) BRYMER, JACK CONTR. SERV. 12656 TOALSON "C" PEARSALL (AUSTIN CHALK) BRYMER, JACK CONTR. SERV. 12999 TOCQUIGNY BRISCOE RANCH (EAGLEFORD) REDEMPTION OIL & GAS, LLC 15862 TOCQUIGNY, R.O. PEARSALL (AUSTIN CHALK) VIRTEX OPERATING COMPANY, INC. 12739 TOM EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15898 TOM FAMILY UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16478 TOM HANKS EF EAGLEVILLE (EAGLE FORD-1) ROSETTA RESOURCES OPERATING LP 16996 TOM UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16023 TOMAHAWK I MCCLAIN (AUSTIN CHALK) TOMAHAWK PETROLEUM 04808 TOMBLIN, R.W. KYOTE IMPETRO OPERATING LLC 10421 TONDRE, CLINT CHICON LAKE TONDRE, CLINT 00299 TONDRE, OSCAR L. FAIRFIELD CRYSTAL RESOURCES, INC 02440 TORRES, A. SOMERSET PETROSAURUS, INC. 08813 TORRES, M.R. FAIRFIELD GREAT PLAINS RESOURCES, INC. 08415 TORTUGA B UNIT PEARSALL (AUSTIN CHALK) CRIMSON EXPLORATION OPER., INC. 12425 TORTUGA C PEARSALL (AUSTIN CHALK) CRIMSON EXPLORATION OPER., INC. 14711 TORTUGA RANCH PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14627 TORTUGA UNIT PEARSALL (AUSTIN CHALK) CRIMSON EXPLORATION OPER., INC. 14664


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ TORTUGA-A-UNIT PEARSALL (AUSTIN CHALK) CRIMSON EXPLORATION OPER., INC. 14663 TOWERS DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16662 TOWNS ADDITION UNIT-WATTS SALT FLAT GOODMAN, D. W. 03153 TOWNSEND, M.E. -A- SOMERSET CIBOLO PRODUCTION, LLC 11132 TOWNSEND, S. G. CROWN, E. (NAVARRO) STARBURST ENERGY, INC. 00334 TRADITIONS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16910 TRAMMEL, H. S. 3H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14632 TRAMMELL, H. S. LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 01110 TRANSUE, JIM LA VERNIA TRANSUE, JIM 09578 TRANSWESTERN B-1 PEARSALL (AUSTIN CHALK) CARRIZO EXPLORATION, INC. 13654 TRAPP BRISCOE "A" TENNEY CREEK SAUR, JERRY 03460 TRAPP VAS II SOMERSET FAR, INC. 11622 TRAPP, LOUIS E. JR. SOMERSET GREAT PLAINS RESOURCES, INC. 10870 TRAPPE MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 09692 TRAPPE -A- MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 10112 TRAVIS, L. O. 641 PENA CREEK (GEORGETOWN) SHELL WESTERN E&P 14649 TRAYLOR NORTH BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15412 TRAYLOR SOUTH ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15766 TRAYLOR UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 17112 TRAYLOR WEST ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15993 TREFF, PAUL STOREY, E. (5350 FRIO) TEXOKAN OPERATING, INC. 08868 TREVINO SASPAMCO DARICO OIL & GAS CO. 07989 TREVINO & SONS PEARSALL (AUSTIN CHALK) JIN PETROLEUM LLC 13788 TREVINO UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 17176 TREVINO, JESSE M. SASPAMCO DARICO OIL & GAS CO. 04376 TREVINO, SHORTY PEARSALL (AUSTIN CHALK) SRJC ENTERPRISES, LLC 13046 TRIAL UNIT SOMERSET PETRO LIONS, LLC 10785 TRIGO UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16415 TRIPLE J PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 14795 TRISTAN, P. SPILLER ORIGIN PRODUCTION COMPANY, INC. 13669 TROELL, C. T. PLEASANTON, S. (CARRIZO SAND) RAY JR. CO., INC. 01385 TROELL, CHARLES T. PLEASANTON, S. (CARRIZO SAND) RICKAWAY ENERGY, CORP. 01387 TROELL, CHARLES T. -A- PLEASANTON, S. (CARRIZO SAND) RICKAWAY ENERGY, CORP. 01389 TROELL, CHAS. T. PLEASANTON, S. (CARRIZO SAND) RICKAWAY ENERGY, CORP. 01380 TROELL, CHAS. T. PLEASANTON, S. (QUEEN CITY) RICKAWAY ENERGY, CORP. 01393 TROELL, CHAS. T. PLEASANTON, S. (SPARTA) RICKAWAY ENERGY, CORP. 02923 TROELL, E. FIRST SHOT (AUSTIN CHALK) MARATHON OIL EF LLC 13075 TROELL, ET AL FIRST SHOT (AUSTIN CHALK) MARATHON OIL EF LLC 13202 TROTTER PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15715 TSCHIRHART, L. PEARSALL (AUSTIN CHALK) CHAPARRAL NATURAL RESOURCES,INC. 12461 TT RANCH UNIT A LAS BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16601 TT RANCH UNIT B LAS BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16560 TUCKER A.W.P. (OLMOS) WAPITI OPERATING, LLC 10077 TUCKER, R. L. CAMPANA ELLIOTT OIL & GAS OPERATING CO. 14154 TULL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17311 TUMLINSON BLAKEWAY (OLMOS A) HOOPER OIL & GAS, LLC 11353 TUMLINSON -B- MINERVA-ROCKDALE PRICE OPERATING, LLC 10529 TUMLINSON LANDCASTLE MINERVA-ROCKDALE PRICE OPERATING, LLC 17331 TUMLINSON UNIT BLAKEWAY (DIXON SAND) TEXOWA, LLC 06494 TUMLINSON UNIT #8 BLAKEWAY (DIXON SAND) TEXOWA, LLC 10607 TUMLINSON-COFFIELD UNIT #1 BLAKEWAY (DIXON SAND) TEXOWA, LLC 10606


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ TUMLINSON, BERTA UNIT BLAKEWAY (DIXON SAND) ANACONDA OIL & GAS 06202 TUMLINSON, MAUDE, ET AL MINERVA-ROCKDALE PRICE OPERATING, LLC 03608 TURK-WILLIAMS UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 15938 TURMAN BRISCOE RANCH (EAGLEFORD) TEXAS AMERICAN RESOURCES COMPANY 15855 TURMAN PEARSALL (AUSTIN CHALK) BLACKBRUSH O & G, LLC 14527 TURMAN PEARSALL (BUDA LIME) TEXAS AMERICAN RESOURCES COMPANY 16384 TURMAN UNIT PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 15275 TURNAM-HIGGINS KAYE (NAVARRO) GEOMEG ENERGY OPERATING CO., LLC 07191 TURNER DUNLAP B.O. OIL COMPANY 03965 TURNER, JESSE, JR., ETAL DUNLAP B.O. OIL COMPANY 00515 TURNER, L.M. JR. SOMERSET TURNER, L. M. JR. 11301 TURNER, R. M. -A- SALT FLAT DARST CREEK OIL COMPANY 02538 TURNER, R. M. -B- SALT FLAT DARST CREEK OIL COMPANY 02330 TURNEY BRISCOE RANCH (EAGLEFORD) XOG OPERATING LLC 16286 TURNEY-WINN WILDCAT JANCO OPERATING 12378 TURNEY, PAUL, MRS. RANCH TURNEY STONE, J. G. OIL CO. 03407 TURNEY, PAUL, MRS., RANCH -A- TURNEY FRIESS, HAROLD TURNEY 03408 TURNHAM PEARSALL (AUSTIN CHALK) FIRST ROCK, INC. 05614 TURNHAM-ASTRO NCT-1 PEARSALL (AUSTIN CHALK) GOLDEN CHILD, INC. 06858 TURNHAM, J.C. PEARSALL (AUSTIN CHALK) FIRST ROCK, INC. 05163 TWIN VALLEY -A- UNIT SOMERSET CHARITA 11572 TWIN VALLEY -B- UNIT SOMERSET CHARITA 12062 TWIN VALLEY -E- UNIT SOMERSET GINCO OPERATING CO. 11064 TWIN VALLEY "C" UNIT SOMERSET CHARITA 11605 TYLER EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 15506 TYLER SOPHIA (WILCOX CONSOL.) HAWTHORN ENERGY PARTNERS, LLC 14735 TYLER "B" SOPHIA (WILCOX CONSOL.) HAWTHORN ENERGY PARTNERS, LLC 14435 TYLER RANCH A.W.P. (OLMOS) SV ENERGY COMPANY, LLC 15064 TYLER RANCH EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17069 TYLER RANCH EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 15498 TYLER UNIT A EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16265 TYLER UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16320 TYLER UNIT C EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16321 TYLER UNIT D EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16853 TYLER UNIT E EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16904 TYLER UNIT F EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17135 TYLER UNIT H EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17070 TYLER, J. W., ET UX BULLOH (NAVARRO) VICEROY PETROLEUM, LP 04644 TYLER, J.W. ET UX BULLOH, SW. (NAVARRO) VICEROY PETROLEUM, LP 14072 TYREE, S.B. PILGRIM (AUSTIN CHALK) J.W. SERVICE COMPANY 13419 ULLMAN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15328 UNCLE BUCK MINERVA-ROCKDALE S.L.&B. OIL CO. 10653 UNDERWOOD W.C. FINCH (SIMSBORO 1900) THREE FORKS OPERATING CO, LLC 11691 UNO MAS -A- STRICKHAUSEN (OLMOS TRI-BAR) VIRTEX OPERATING COMPANY, INC. 09629 UNO MAS -A- TRI BAR (OLMOS) VIRTEX OPERATING COMPANY, INC. 17269 UNO MAS -B- STRICKHAUSEN (OLMOS TRI-BAR) FIRST ROCK, INC. 10693 UNSELL, EDWIN E. PEARSALL (AUSTIN CHALK) PONTIAC OIL, INC. 04792 URBAN, MILTON PEARSALL (AUSTIN CHALK) TIZA ENERGY, INC. 12978 URBANCZYK EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16171 URBANCZYK EAGLEVILLE (EAGLE FORD-1) TIDAL PETROLEUM, INC. 15465 URIBE, ALICIA SOMERSET GREAT PLAINS RESOURCES, INC. 10928


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ VALCHER, EMMA VISTO (AUSTIN) DOMINION PRODUCTION COMPANY, LLC 11519 VALENTA PILGRIM (AUSTIN CHALK) BYRD OPERATING COMPANY 12794 VALLES, A. KAYE (NAVARRO) KOCH, P. S. 02279 VALLEY WELLS BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15561 VALLEY WELLS UNIT 20 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16945 VALLEY WELLS UNIT 22 DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16944 VALOIS BATEMAN (AUSTIN CHALK) FOYORO ENERGY, LLC 09450 VAN AUTRY LA VERNIA AUTRY, ALLEN 08768 VAN AUTRY TRT 1 LA VERNIA AUTRY, ALLEN 10611 VAN AUTRY, TRACT 2 LA VERNIA AUTRY, ALLEN 10731 VAN CLEVE UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16888 VAN CLEVE UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16611 VAN CLEVE, C. PILOSA, EAST (2ND SAN MIGUEL) TEXOKAN OPERATING, INC. 05918 VAN CLEVE, D.F. PILOSA, EAST (2ND SAN MIGUEL) CUATRO PETRO CORP. 12013 VAN CLEVE, E.C. PILOSA, EAST (2ND SAN MIGUEL) CUATRO PETRO CORP. 05558 VAN CLEVE, JACK PILOSA, EAST (2ND SAN MIGUEL) WILLIAMSON OPERATING CO. 05920 VAN CLEVE, JACK "B" PILOSA, EAST (2ND SAN MIGUEL) HAMPTON ENERGY CORPORATION 05926 VAN DALSEM EL INDIO, N.(OLMOS) BETA OIL CORPORATION 11397 VAN DALSEM "16" EL INDIO, N.(OLMOS) BETA OIL CORPORATION 11725 VAN HORN, VALON TENNEY CREEK ALTA MESA SERVICES, LP 08040 VAN WINKLE, JIMMY L. SUTIL (REEF) MARSHFIELD OIL & GAS, LLC 05954 VAN WINKLE,JIMMY L. SUTIL (BUDA) MARSHFIELD OIL & GAS, LLC 06474 VAN ZANDT, C.C. FAIRFIELD MORE TEXAS OIL 06391 VANN, D. M. BUCHANAN CARDOZO TECHNOLOGIES, INC. 11835 VANN, D. M. BUCHANAN M & S RESOURCES,LLC 06382 VANN, D.M. BUCHANAN CARDOZO TECHNOLOGIES, INC. 05977 VARNER, A. J. LA VERNIA DOEGE, DONALD 03480 VARNER, A. J. LA VERNIA J.A.G. OIL & GAS 00942 VARNER, A. J. -A- LA VERNIA B. & L. OIL COMPANY 00872 VARNER, A. J. -B- LA VERNIA B. & L. OIL COMPANY 00873 VASBINDER, J.H. LA VERNIA AGAPE ENERGY INC. 07862 VASQUEZ, M. FAIRFIELD GENIE OIL COMPANY "A" 06795 VAUGHAN ESTATE PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 04604 VAUGHN, ALVA E. SOMERSET PETROSAURUS, INC. 11146 VELTEN, E.C. UNIT SOMERSET EVERETT OIL 09008 VELVET-WALSTON KAYE (NAVARRO) GAT-MAN PETRO INC. 06616 VENADO SUN T S H (OLMOS) SWIFT ENERGY OPERATING, LLC 14926 VENADO TRI BAR (OLMOS) SWIFT ENERGY OPERATING, LLC 14826 VENUS-WILSON PEARSALL (AUSTIN CHALK) SABINAL RESOURCES, INC. 14155 VERHEUL B BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15424 VERHEUL UNIT A BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15418 VERLANDER UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15953 VERNA PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 15182 VERNON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16994 VERNOR, RUBY PILGRIM (AUSTIN CHALK) WILSON, BILLY R. 14895 VESPER ASSOCIATES DIM B BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16073 VESPER DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15569 VESSELS, R.P.-TERRY MINERVA-ROCKDALE PRICE OPERATING, LLC 09240 VESTRING, ET AL UNIT CEBOLLA (3660) JENNINGS EXPLORATION COMPANY 14244 VICK & YOUNGBLOOD LULING-BRANYON AUSTIN OPERATING, LLC. 03551 VICKERS EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15383


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ VICKERS-BRAUNE EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16341 VICKERY, ARTIE DALE-MCBRIDE GEOMEG ENERGY OPERATING CO., LLC 04096 VICTORIA NATIONAL BANK KAYE (POTH) SMITH & PHILLIPS AND DILLON 02547 VIVION BRISCOE RANCH (EAGLEFORD) ROSETTA RESOURCES OPERATING LP 15601 VOGEL PEARSALL (AUSTIN CHALK) ZORRA OIL & GAS 13080 VOIGT, CARROLL CARROL SOUTHRIDGE OPERATING COMPANY 06160 VOIGT,RENO LA VERNIA FUEGO ENERGY, LLC 06537 VOLKMAN/DOTTIE LA VERNIA W D WELL SERVICE 05809 VOLKMAN, HATTIE LA VERNIA TEXAS COASTAL RESOURCES LLC 05836 VOLKMANN, ALFRED LA VERNIA GREAT PLAINS RESOURCES, INC. 10146 VOLTZ UNIT A BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15314 VOLTZ UNIT B BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15335 VON GONTEN, ROY LEE MINERVA-ROCKDALE EILAND & VON GONTEN 05898 VON GONTEN, ROY LEE MINERVA-ROCKDALE VON GONTEN, ROY L. 03047 VON ORMY LAND & CATTLE -A- SOMERSET CIBOLO PRODUCTION, LLC 11303 VON ORMY LAND & CATTLE CO. SOMERSET CIBOLO PRODUCTION, LLC 11302 VON ORMY LAND & CATTLE CO. -B- SOMERSET CIBOLO PRODUCTION, LLC 11291 VON ROSENBERG UNIT A DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15612 VORPAHL, ELEANOR LA VERNIA TEXOKAN OPERATING, INC. 06173 VORPAHL, MARTIN LA VERNIA LIBERTY HEAD PETROLEUM, INC. 00879 VORPAHL, OTTO LA VERNIA TEXOKAN OPERATING, INC. 06038 VORPHAL, MARTIN LA VERNIA J.A.G. OIL & GAS 11925 VORPHAL, ROBERT LA VERNIA TEXOKAN OPERATING, INC. 05741 VORPHAL, WILL FLOYD LA VERNIA TEXOKAN OPERATING, INC. 05647 VOSS "C" PEARSALL (AUSTIN CHALK) ALAMO OPERATING COMPANY, L. C. 12784 VOSS "D" PEARSALL (AUSTIN CHALK) BRYMER, JACK CONTR. SERV. 13166 VOTAW SAINT THIRTEEN (OLMOS NO. 1) CARRIZO EXPLORATION, INC. 11935 VOTAW "A" SAINT THIRTEEN (OLMOS NO. 1) CARRIZO EXPLORATION, INC. 15028 VOTAW DIM BRISCOE RANCH (EAGLEFORD) BUFFCO PRODUCTION INC. 15975 VOTAW UNIT A DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16642 VOTAW, LARRY SAINT THIRTEEN (OLMOS NO. 2) CARRIZO EXPLORATION, INC. 12372 VRANA DOBROWOLSKI (7400 BUDA) WILEY LEASE CO., LTD. 11761 VRANA, BEN FIVE MILE (WILCOX, UPPER) IPACT 14879 VYVLECKA JOURDANTON (RECKLAW) PRESSLY OIL INTEREST, INC. 00764 VYVLECKA, JOE VYVLECKA (CARRIZO) PRESSLY OIL INTEREST, INC. 06343 W JANCA UNIT A EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 16505 W T SANDLIN UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16590 W. E. STACY & SONS ET AL PEARSALL (AUSTIN CHALK) VERMILLION PRODUCTION, INC. 12853 W. R. MARTIN BATEMAN (AUSTIN CHALK) FOYORO ENERGY, LLC 15933 W. W. MCKINLEY UNIT 1 PEARSALL (AUSTIN CHALK) HUGHES, DAN A. COMPANY, L.P. 13324 W.E. STAPP IMOGENE WILEY LEASE CO., LTD. 17281 W.J. TILLER 3-H LULING-BRANYON TEXAS PETROLEUM INVESTMENT CO. 14980 W.L. CARTER PEARSALL (BUDA LIME) HUGHES, DAN A. COMPANY, L.P. 15805 W.W.R. INC. CHICON LAKE GENIE OIL COMPANY 10423 WAGLEY-DAVENPORT SCHUBERT (AUSTIN CHALK) GUEDRY, MARK 13303 WAGLEY-MCCULLOUGH DRUMMOND (AUSTIN 1400) GUEDRY, MARK 13659 WAGNER FARMS PEARSALL (AUSTIN CHALK) PRIME OPERATING COMPANY 14705 WAITERS PINK SR.,ET UX LA VERNIA SEACO PRODUCTION 07742 WAITERS, JOHN T. LA VERNIA SEACO PRODUCTION 07181 WALDRIP, DIBRELL STAPLES VT OIL 08959 WALK A JAM UNIT A DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15790


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WALK A JAM UNIT B DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16515 WALK A JAM UNIT C DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16516 WALK A JAM UNIT D DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16494 WALK A JAM UNIT E DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16517 WALK A JAM UNIT F DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16656 WALKER DUNLAP SAUR, JERRY 06926 WALKER EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17008 WALKER EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16857 WALKER KAYE (NAVARRO) WALKER, HARREL L. 08676 WALKER -A- DUNLAP SHWJ OIL & GAS CO., INC. 10348 WALKER 'B' KAYE (NAVARRO) JOHANSON OIL 17298 WALKER BROS. SALT FLAT JAVELINA OIL & GAS CO. 01490 WALKER-C- DUNLAP LULING O&G LLC 07419 WALKER-PEARSON MILBUR (NAVARRO) THREE FORKS OPERATING CO, LLC 05804 WALKER, C.R. SALT FLAT LULING O&G LLC 11918 WALKER, G. C. DUNLAP GEOMEG ENERGY OPERATING CO., LLC 03855 WALKER, G. C. DUNLAP GINCO OPERATING CO. 02659 WALKER, H. L. - STATE OF TEXAS KAYE (NAVARRO) CALTEX ENERGY CO. 01870 WALKER, MRS. G. C. -B- DUNLAP GREAT PLAINS RESOURCES, INC. 04260 WALKER, P. L. DUNLAP GINCO OPERATING CO. 03905 WALKER, W. B. -A- SALT FLAT DARST CREEK OIL COMPANY 02271 WALKER, W.B. SALT FLAT LULING O&G LLC 11824 WALKER, W.C. A.W.P. (OLMOS) TREK RESOURCES, INC. 10209 WALL MARCELINA CREEK (AUSTIN CHALK) LUCAS ENERGY, INC. 15657 WALL MARCELINA CREEK (BUDA) LUCAS ENERGY, INC. 15197 WALLACE, G.D. JACK FLASH (ELLENBURGER) RANGE PRODUCTION COMPANY 13972 WALLER, M L MILANO (PECAN GAP) EXPLORATION TECHNIQUES INC. 14719 WALLY UNIT B EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 17272 WALNUT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16103 WALSTON, WILLIS KAYE (NAVARRO) TEXAS COASTAL RESOURCES LLC 01917 WALTHER CHICON LAKE GENIE OIL COMPANY "A" 09713 WALTOM, LILLIAN VELMA (ESCONDID0) CORE E & P CORP. 08687 WALTON, C. A. ET AL DARST CREEK (BUDA) HASTON OIL COMPANY 05410 WALTON, HELEN GALBA (BARTOSH) ATASCOSA EXPLORATION, LLC 14391 WALTON, LILLIAN VELMA (BUDA LIME) CORE E & P CORP. 10461 WALTON, S.L. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 05770 WARD LA VERNIA LEVANT ENERGY LLC 00934 WARD E EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16093 WARD ET AL SMILEY, SE (AUSTIN CHALK) P.E.C.I. OPERATORS, INC. 07584 WARD F EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16584 WARD-BILLINGS FIRST SHOT (AUSTIN CHALK) PREMIER MINERALS, INC. 13225 WARD-RIHA PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 15018 WARD-WENDLAND TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 02155 WARD, ALEXANDER J. E.R. BOUNDS (ESCONDIDO) BOUNDS, ROBERT S. 10128 WARD, H. W. LA VERNIA TEXAS COASTAL RESOURCES LLC 03226 WARD, J. W., JR. CHICON LAKE GENIE OIL COMPANY 15020 WARD, J. W., JR. CHICON LAKE WARD, J. W. III 01868 WARDLAW WARDLAW BANYAN OPERATING, LLC 16912 WARDLAW, L. J. ESTATE -A- WARDLAW UHC PETROLEUM CORPORATION 08108 WARDLAW, L. J. II WARDLAW UHC PETROLEUM CORPORATION 09788 WARE BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15572


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WARE UNIT C BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15879 WARE UNIT D BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15854 WARE, ALPHA TORCH (KING) JENEX PETROLEUM CORPORATION 02421 WARE, ALPHA TORCH (OLMOS 4) JENEX PETROLEUM CORPORATION 14054 WARE, ALPHA TORCH (SAN MIGUEL G) JENEX PETROLEUM CORPORATION 14047 WARE, ALPHA TORCH (SERPENTINE) JENEX PETROLEUM CORPORATION 05649 WAREING EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15511 WAREING 71A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15852 WAREING 76A UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15617 WAREING 76B UNIT EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 15639 WARNCKE-JOSLIN -A- DUNLAP TEXSTAR OIL & GAS, LLC 03795 WARNCKE-JOSLIN -B- DUNLAP AUSTIN OPERATING, LLC. 13306 WARNCKE, ELTON LA VERNIA QUEST RESEARCH & DEV. CORP. 03372 WARNCKE, F. LA VERNIA LONGBRANCH ENERGY, LP 03379 WARNCKE, F. W. LA VERNIA QUEST RESEARCH & DEV. CORP. 03350 WARNKEN EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 15459 WARNKEN B EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16470 WARNKEN C EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16770 WARTHOG UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16593 WASH, WALTER LINNE (POTH -A- SAND) GAUNTT, INC. 00963 WASHBURN RANCH 01 EAGLEVILLE (EAGLE FORD-1) PIONEER NATURAL RES. USA, INC. 16067 WASHINGTON EAGLEVILLE (EAGLE FORD-1) PENN VIRGINIA OIL & GAS, L.P. 16050 WATKINS-MERCER FENTRESS (1750) MCMINN OPERATING COMPANY, INC. 10535 WATKINS, MAY ACLETO CREEK (POTH B) IB OIL COMPANY, LLC 10515 WATKINS, MAY ACLETO CREEK (POTH C) TRIPLE H PRODUCTION 10362 WATKINS, MAY ET AL ACLETO CREEK (POTH B) TRIPLE H PRODUCTION 07395 WATKINS, SARA LULING-BRANYON GREAT PLAINS RESOURCES, INC. 02959 WATSON SALT FLAT RUJO 03039 WATSON CAMP TRUST SOMERSET CALK OIL COMPANY 08260 WATSON UNIT SALT FLAT OFFSPRING WELL SALVAGE 03079 WATSON, J. P. SALT FLAT SHALE OPERATING CO. 01445 WATSON, J.P. -A- SALT FLAT GAUGE OIL COMPANY 12346 WATSON, MARTIN LULING-BRANYON MA-STELL INC 09429 WATSON, RUSSELL & PAULA CHICON LAKE MCGUIRE, JOE INC. 11885 WATT FARM WILDCAT SCHLUMBERGER TECHNOLOGY CORP. 14854 WATTS BRISCOE RANCH (EAGLEFORD) TEXAS AMERICAN RESOURCES COMPANY 17029 WATTS PEARSALL (AUSTIN CHALK) TEXAS AMERICAN RESOURCES COMPANY 15271 WATTS-TEXAS AMERICAN UNIT 29 BRISCOE RANCH (EAGLEFORD) TEXAS AMERICAN RESOURCES COMPANY 17030 WATTS, H.L. CHARLOTTE (NAVARRO) WEN-BE 10686 WATTS, OTTO SOMERSET GREAT PLAINS RESOURCES, INC. 06666 WATTS, R.D. SALT FLAT, WEST EAGLE FORD OIL CO., INC. 09222 WATTS, WILLIE JOE DUNLAP STELLFLUG, TERRY L., D.C. 11337 WATTS, WILLIE JOE -A- DUNLAP STELLFLUG, TERRY L., D.C. 08395 WATTS, WILLIE JOE -B- DUNLAP STELLFLUG, TERRY L., D.C. 08561 WAYLAND, JON S. ET AL UNIT PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 13156 WEAKLEY, JORDON ESTATE UNIT DUNLAP BLACKMAR, JIM OIL OPERATOR 08295 WEATHERSBY PEARSALL (AUSTIN CHALK) MCDAY ENERGY CORP. 04896 WEAVER, BRUCE D. PEARSALL (AUSTIN CHALK) WCS OIL & GAS CORPORATION 12833 WEAVER, W. G. SALT FLAT LUTEX OIL, LTD. 03069 WEBB PENA CREEK (SAN MIGUEL 2ND) ENERGYQUEST II, LLC 14351 WEBB SOMERSET MORE TEXAS OIL 10760


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WEBB -A- BENTON CITY S, (ANACACHO) SEEKER OIL COMPANY, INCORPORATED 06658 WEBB OIL UNIT II DRUMMOND (AUSTIN 1400) BENCHMARK TEXAS PETROLEUM, LLC. 03964 WEBB OIL UNIT II DRUMMOND (EDWARDS 1800) BENCHMARK TEXAS PETROLEUM, LLC. 15817 WEBB UNIT SALT FLAT SHEFTS & SHEFTS, INC. 08484 WEBB-A- SOMERSET AMINEX USA, INC. 11365 WEBB, BERRY DRUMMOND (EDWARDS 1800) BENCHMARK TEXAS PETROLEUM, LLC. 03924 WEBB, EDGAR KAYE (NAVARRO) LT OIL LLC 00776 WEBB, ERNEST LULING-BRANYON GINCO OPERATING CO. 04183 WEBB, FLORA JOURDANTON (QUEEN CITY) WSM 07113 WEBB, MAX L. SALT FLAT TEXAS T ENERGY, LTD. 02927 WEBB, MAX L. B SALT FLAT M. B. ENERGY, LLC 07476 WEBB, MAX L., -B- SALT FLAT TEXAS T ENERGY, LTD. 03346 WEBB, R. DRUMMOND (AUSTIN 1400) CAVALIER OIL & GAS, INC. 03902 WEBB, REUBEN DRUMMOND (AUSTIN 1400) LSA OPERATING 04483 WEBB, RUEBEN DRUMMOND (AUSTIN 1400) ROYAL TEXAS PETROLEUM 15445 WEBB, RUEBEN DRUMMOND (EDWARDS 1800) ROYAL TEXAS PETROLEUM 05794 WEBB, T.C. SOMERSET QUINTANILLA, TONY C. 10810 WEBB, T.C. -A- SOMERSET K2 PETROLEUM, INC. 11116 WEBB, T.C. -A- SOMERSET QUINTANILLA, TONY C. 13273 WEBB, TOM BROWN SALT FLAT GINCO OPERATING CO. 07392 WEBB, TOMMY C. -B- SOMERSET QUINTANILLA, TONY C. 13496 WEBB, TOMMY C. -C- SOMERSET QUINTANILLA, TONY C. 10811 WEBBER, HILDA ADAMS (BUDA) SULO OIL COMPANY 05495 WEBER AC UNIT FIRST SHOT (AUSTIN CHALK) EOG RESOURCES, INC. 15905 WEBER UNIT FIRST SHOT (AUSTIN CHALK) MODERN EXPLORATION, INC. 14254 WEBER, L.G. PILOSA, EAST (2ND SAN MIGUEL) PICOSA, L.L.C. 07956 WEDDINGTON, ADELINE FASHING (EDWARDS LIME -A-) TENNECO OIL CO. 02683 WEEKS, M.N. PEARSALL (AUSTIN CHALK) LTS OIL & GAS A 12430 WEIGANG, G. F. WEIGANG ACOCK/ANAQUA OPERATING CO., LP 01776 WEIMER UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15785 WEIMER UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16137 WEIMERS, ALFRED B. -A- TAYLOR-INA CIVRON PETROLEUM RES., LLC 05795 WEIMERS, C.T. SOMERSET PETROSAURUS, INC. 10830 WEINSTROM PETROLEUM TAYLOR-INA WEINSTROM PETROLEUM 05385 WEINSTROM, HERBERT & JANET ELAIN TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 06420 WEIR-RAMBIE SOMERSET BAR M PETROLEUM CO. 06756 WEIR-RAMBIE SOMERSET EVERETT OIL 09341 WEISSLER -B- TAYLOR-INA SIERRA BLANCA PETRO. ENERGY,INC. 12170 WEISSLER, A. C. TAYLOR-INA OUACHITA OIL & GAS CO. 04583 WELDON SCHORP UNIT "A" BRISCOE RANCH (EAGLEFORD) CABOT OIL & GAS CORPORATION 15404 WELLS-TOUCHSTONE SOMERSET PETROLEUM OILFIELD SERVICES INC. 01649 WELLS, ED. SOMERSET GINCO OPERATING CO. 01646 WELLS, ED. M. -A- SOMERSET GINCO OPERATING CO. 01647 WELLS, ED. M. TRUST SOMERSET GINCO OPERATING CO. 03984 WELLS, J. W. NIXON ALCOR ENERGY, INC. 11951 WELLS, R.L. SOMERSET GREAT PLAINS RESOURCES, INC. 10954 WENDLANDT-MASSENGALE LYTTON SPRINGS ROYAL TEXAS PETROLEUM 10490 WENZEL, BENNIE -A- MINERVA-ROCKDALE COTTONWOOD CREEK ENTERPRISES LLC 02499 WENZEL, BENNIE -B- MINERVA-ROCKDALE COTTONWOOD CREEK ENTERPRISES LLC 03900 WERCHAN, R.B WRIGHT SPILLER CENTEX PIPE & EQUIPMENT, INC. 09274 WERNETTE, LOUIS J. TAYLOR-INA WERNETTE, LOUIS J. 02404


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WESLEY SWAIM EAGLEVILLE (EAGLE FORD-1) TALISMAN ENERGY USA INC. 15986 WESLEY SWAIM UNIT EAGLEVILLE (EAGLE FORD-1) TALISMAN ENERGY USA INC. 17203 WEST JOURDANTON UNIT JOURDANTON, WEST (ESCONDIDO) JENEX PETROLEUM CORPORATION 14105 WEST RANCH WILDCAT RIMFIRE LAND & CATTLE CO. 14659 WEST RASMUSSEN UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16895 WEST SHINER RANCH PEARSALL (AUSTIN CHALK) FIRST ROCK, INC. 12616 WEST UNIT WILDCAT SCHAARON INTERNATIONAL ENERGY 12174 WEST, MARY PILOSA, NORTH (2ND SAN MIGUEL) J M FOUR PRODUCTION 05950 WEST, MASSIE WILDCAT RIMFIRE LAND & CATTLE CO. 15140 WEST, MASSIE MASSIE WEST (PALUXY) SYNERGY-WEST EXPLORATION CO LLC 02592 WEST, ROBERT SOMERSET PETROSAURUS, INC. 11066 WESTBROOK SALT FLAT EAGLE FORD OIL CO., INC. 08474 WESTBROOK, W. G. CHEROKEE (NAVARRO) SHOREHAM OIL & GAS COMPANY, INC. 04180 WESTBROOK, W. G. ET AL CHEROKEE (NAVARRO) BUFFCO PRODUCTION INC. 04263 WESTHOFF SWD EAGLEVILLE (EAGLE FORD-1) STINGRAY WELLS, LLC 16661 WESTWIND UNIT ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15607 WETHERBEE, CHARLES F. TRUSTEE -A PEARSALL (AUSTIN CHALK) MISSION RIVER SYSTEMS, INC. 07306 WF UNIT A EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 17296 WHATABURGER CATARINA, E. (OLMOS A) L & J EXPLORATION, LLC 14037 WHATLEY, NELDA BATEMAN (AUSTIN CHALK) MEB, LLC 09067 WHEELER A.W.P. (OLMOS) MILAGRO EXPLORATION, LLC 09922 WHEELER A.W.P. (WILCOX 6200) MILAGRO EXPLORATION, LLC 14416 WHEELER DILWORTH, S.E. (WILCOX SUTTON) BELLOWS OPERATING CO., L. C. 14989 WHEELER DILWORTH, SE (WILCOX 6500) ROCK RESOURCES, INC. 15191 WHEELER DILWORTH, SE (WILCOX 6500) SUTTON PRODUCING CORP. 11869 WHEELER EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15325 WHEELER GEMSBOK (WALES) MANTI EXPLORATION OPERATING LLC 14796 WHEELER SAN MIGUEL CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 14707 WHEELER EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 16848 WHEELER FOLEY UNIT A MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16657 WHEELER-WHITE EFS EAGLEVILLE (EAGLE FORD-1) SEA EAGLE FORD, LLC 17229 WHEELER, CHARLES DRAGOON CREEK (GOVT. WELLS, UP.) WELHAUSEN OPERATING COMPANY, LP 09897 WHEELER, CLIFTON SAN MIGUEL CREEK (WILCOX CONS.) ENERQUEST OPERATING L.L.C. 14666 WHEELER, CLIFTON -B- DRAGOON CREEK, SW. (GOVT. WELLS) WELHAUSEN OPERATING COMPANY, LP 03873 WHEELER, E., MRS. SCOTTY (BARTOSH SAND) RICKAWAY ENERGY, CORP. 01567 WHEELER, KAREN A.W.P. (OLMOS) WAPITI OPERATING, LLC 14886 WHEELER, KAREN -A- WHEELER (OLMOS) WAPITI OPERATING, LLC 04868 WHEELER, LEE A.W.P. (OLMOS) WAPITI OPERATING, LLC 11912 WHEELER, LEE SAN MIGUEL CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 15076 WHEELER, LEE -A- A.W.P. (OLMOS) WAPITI OPERATING, LLC 12225 WHEELER, LEE -B- A.W.P. (OLMOS) WAPITI OPERATING, LLC 14696 WHEELER, LEE A-2 A.W.P. (OLMOS) WAPITI OPERATING, LLC 15100 WHEELER, MARY ANN A.W.P. (OLMOS) WHEELER, JOHN D. 11402 WHEELER, N. A.W.P. (OLMOS) XTO ENERGY INC. 08893 WHEELER, ROY G. ET AL VELMA (ESCONDID0) WEN-BE 09122 WHEILES, RUTH J. FAIRFIELD HARDWICK, ROSS H. OIL COMPANY 08946 WHERRY & GREEN UNIT WHERRY & GREEN (REKLAW) BRYMER CONTRACTING INCORPORATED 14201 WHITE EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16250 WHITE TAIL UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16074 WHITE, C. CAMPBELL FAIRFIELD GENIE OIL COMPANY "A" 09796 WHITE, C. CAMPBELL FAIRFIELD MCLAUGHLIN, STEVEN J. 11637


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WHITE, E. B. LULING-BRANYON GINCO OPERATING CO. 03414 WHITE, ELI FAIRFIELD D.C. OIL 06776 WHITECOTTON PEARSALL (AUSTIN CHALK) PINTO OIL CO. 13413 WHITECOTTON UNIT PEARSALL (AUSTIN CHALK) EXCO OPERATING COMPANY, LP 14889 WHITECOTTON UNIT A BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15421 WHITEHEAD, CINDY E. WILDCAT BRONCO-MEDINA OIL CO., INC. 11948 WHITEHURST A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 14138 WHITETAIL UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15891 WHITLEY SERBIN (WILCOX) THREE FORKS OPERATING CO, LLC 12128 WHITLEY SOMERSET EVERETT OIL 11450 WHITLEY, ARTH S. SOMERSET EVERETT OIL 11413 WHITLEY, C., ETAL SPILLER QUEST EMG, INC. 03653 WHITMIRE, W.A. A.W.P. (OLMOS) WAPITI OPERATING, LLC 12190 WHITWELL EAGLEVILLE (EAGLE FORD-1) EP ENERGY E&P COMPANY, L.P. 16160 WHITWELL PEARSALL (AUSTIN CHALK) STONEGATE OPERATORS, INC. 05144 WHYBURN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15888 WIATREK MARCELINA CREEK (AUSTIN CHALK) FIRST ROCK, INC. 13308 WIATREK MARCELINA CREEK (AUSTIN CHALK) LUCAS ENERGY, INC. 15222 WICKHAM, J. E. BIG WELLS (SAN MIGUEL) FORZA OPERATING, LLC 04236 WICKHAM, J. E. GOOD LUCK (SAN MIGUEL) FORZA OPERATING, LLC 06811 WICKHAM, JOHN E. BIG WELLS (SAN MIGUEL) THALMANN, DAVID VAC SERVICE INC 04398 WICKHAM, JOHN E. GOOD LUCK (SAN MIGUEL) THALMANN, DAVID VAC SERVICE INC 04149 WIDGEON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16892 WIEDING, HUGO -B- LA VERNIA JSD OIL, LTD. 01845 WIEDING, HUGO -E- LA VERNIA KOCH, I. ERNEST 02638 WIEDING, HUGO -F- LA VERNIA KOCH, I. ERNEST 03814 WIEDING, L. LA VERNIA MIDSTATES CORPORATION 07599 WIEMERS SOMERSET GREAT PLAINS RESOURCES, INC. 11067 WIEMERS, C.T. -A- SOMERSET AMINEX USA, INC. 11211 WIER PEARSALL (AUSTIN CHALK) WEN-BE 12528 WIER-RAMBIE SOMERSET GREAT PLAINS RESOURCES, INC. 11065 WILDE TRUST UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16986 WILDER, A.E. HOSEK (POTH, LO. -A-) H & P PARTNERSHIP 10498 WILEY NIXON ATC ENERGY LLC 13342 WILEY -C- NIXON ATC ENERGY LLC 12121 WILEY, E.G. ACLETO CREEK (POTH B) TRIPLE H PRODUCTION 09449 WILEY, G.A. NIXON JOHNSON OIL & GAS 07144 WILHELM-SMITH UNIT A EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16354 WILKE SWD FIRST SHOT (AUSTIN CHALK) TRINITY ENVIRONMENTAL SWD,L.L.C 13265 WILKE 2 WILDCAT APACHE CORPORATION 15159 WILLARD, E.K. CHEROKEE (NAVARRO) SHOREHAM OIL & GAS COMPANY, INC. 09617 WILLE, H. DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 02762 WILLE, H. DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 02805 WILLE, HENRY DARST CREEK (BUDA) GARRISON LTD. 02744 WILLEFORD KAYE (NAVARRO) TEXAS COASTAL RESOURCES LLC 14578 WILLEFORD, D. L. KAYE (NAVARRO) KOCH, I. ERNEST 01841 WILLEFORD, DELBERT KAYE (NAVARRO) JARUTOWICZ OIL COMPANY 06779 WILLEY, JESSE V LA VERNIA MATTKE, PAUL 06143 WILLIAM UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16965 WILLIAMS GOLDFINCH (AUSTIN CHALK) HARPER HEFTE, INC. 14999 WILLIAMS PEARSALL (AUSTIN CHALK) 3 W INVESTMENTS LLC 12519


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WILLIAMS SALT FLAT CASTILLO OIL COMPANY LLC 03033 WILLIAMS TRUST WILDCAT KILLAM OIL CO., LTD. 17154 WILLIAMS UNIT EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 16426 WILLIAMS UNIT PATTY HUTT (WILCOX) WEN-BE 04776 WILLIAMS-BUTTLES PEARSALL (AUSTIN CHALK) SIERRA PETROLEUM CO. 13138 WILLIAMS, G. -A- A.W.P. (OLMOS) XTO ENERGY INC. 12125 WILLIAMS, GENEVIEVE PEARSALL (AUSTIN CHALK) SOUTH COAST OIL & GAS CO. 06277 WILLIAMS, GRANT LA VERNIA SOURCE PETROLEUM INC. 09704 WILLIAMS, GRANT H. A.W.P. (OLMOS) XTO ENERGY INC. 08987 WILLIAMS, GRANT H. -A- A.W.P. (OLMOS) XTO ENERGY INC. 10516 WILLIAMS, H. UNIT SALT FLAT, WEST R & S OIL PRODUCTION CO. 07431 WILLIAMS, HOWARD COMANCHE CREEK (ERSKINE SD.) MILLENNIUM PETRO-PHYSICS, INC. 02696 WILLIAMS, J. T. TENNEY CREEK FORTUNE OPERATING COMPANY 07991 WILLIAMS, L.P. CARRIZO, NORTH (AUSTIN CHALK) THALMANN, DAVID VAC SERVICE INC 05180 WILLIAMS, LOLA SMITH SALT FLAT WHITETAIL PRODUCTION 03009 WILLIAMS, MARY ISABELLA FREDDY HUTT, SOUTH (WILCOX) WEN-BE 13994 WILLIAMS, MARY ISABELLA -A- PATTY HUTT (WILCOX) WEN-BE 05664 WILLIAMS, MINNIE E. SOMERSET AMINEX USA, INC. 10946 WILLIAMS, MINNIE E. SOMERSET GREAT PLAINS RESOURCES, INC. 01650 WILLIAMS, S. MARSHA L.O. OIL & GAS, LLC 10552 WILLIAMS, SOPHIA MARSHA L.O. OIL & GAS, LLC 13606 WILLIAMSON EAGLEVILLE (EAGLE FORD-1) ENERGY CORPORATION OF AMERICA 16261 WILLIE, E.M. MINERVA-ROCKDALE MEXIA OIL & GAS, INC. 07146 WILLIE, H. 3-H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 15024 WILLIE, HENRY -A- DARST CREEK (BUDA) GARRISON LTD. 02713 WILLIE, HENRY -B- DARST CREEK (BUDA) TEXSTAR OIL & GAS, LLC 02765 WILLMAN, PAUL DARST CREEK (BUDA) DJ EXPLORATION, INC. 08494 WILLMON PILOSA, EAST (2ND SAN MIGUEL) WITHERSPOON OIL COMPANY 05930 WILLOUGHBY, R.B. LEONA (ELAINE) STRATA STAR PETROLEUM CORP. 06074 WILLWY, JESSE "A" LA VERNIA MATTKE, PAUL 00871 WILSON CROWN, E. (NAVARRO) BLACK SABLE ENERGY, LLC 16181 WILSON CROWN, E. (NAVARRO) REPUBLIC RESOURCES, LLC. 15393 WILSON EAGLEVILLE (EAGLE FORD-1) EF ENERGY, L.L.C. 15755 WILSON EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16564 WILSON EAGLEVILLE (EAGLE FORD-1) STONEGATE PRODUCTION COMPANY,LLC 15507 WILSON SALT FLAT HOLLUB, LAMBERT DRILLING COMPANY 06576 WILSON - MALONE SALT FLAT (EDWARDS) EAGLE ENERGY ACQUISITIONS LP 15939 WILSON -A- DARST CREEK (BUDA) GINCO OPERATING CO. 02739 WILSON -A- SALT FLAT, WEST GEOMEG ENERGY OPERATING CO., LLC 08807 WILSON -B- DARST CREEK (BUDA) GINCO OPERATING CO. 02740 WILSON RANCH PEARSALL (AUSTIN CHALK) STONEGATE PRODUCTION COMPANY,LLC 13314 WILSON TRACTS DIM BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 16193 WILSON UNIT PEARSALL (AUSTIN CHALK) HAWTHORN ENERGY PARTNERS, LLC 14087 WILSON-RIDGE UNIT PEARSALL (AUSTIN CHALK) SAGE ENERGY COMPANY 12445 WILSON, A.H. TAYLOR-INA UNIVERSITY OF TX AT AUSTIN, THE 11559 WILSON, DALLAS DARST CREEK (BUDA) TEXAS PETROLEUM INVESTMENT CO. 04046 WILSON, DALLAS 1H DARST CREEK (EDWARDS) TEXAS PETROLEUM INVESTMENT CO. 14684 WILSON, F.W. SALT FLAT SAUR, JERRY 06376 WILSON, GAIL CROWN, E. (NAVARRO) EXXCEL OPERATING COMPANY 05259 WILSON, H. J. FLORESVILLE, E. (POTH B 2800) TRIPLE H PRODUCTION 03757 WILSON, J. SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 01519


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WILSON, J. ET UX UNIT SALT FLAT LULING O&G LLC 10609 WILSON, J. ET UX UNIT SALT FLAT LUTEX OIL, LTD. 12193 WILSON, J. M. IMOGENE, S. (CARRIZO) BRYMER CONTRACTING INCORPORATED 00692 WILSON, J. N. TAYLOR-INA KLAEGER OPERATING COMPANY II,LLC 01719 WILSON, J. N. TAYLOR-INA LANDMEN OF TEXAS, INC. 02189 WILSON, J. N. TAYLOR-INA RORICO OIL COMPANY 01722 WILSON, J. N. TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 02052 WILSON, J. N. -B- TAYLOR-INA KLAEGER OPERATING COMPANY II,LLC 02018 WILSON, J. N. -B- TAYLOR-INA LANDMEN OF TEXAS, INC. 01829 WILSON, J. N. -C- TAYLOR-INA KLAEGER OPERATING COMPANY II,LLC 02032 WILSON, J. N. "G" TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 02379 WILSON, J. N. "H" TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 02101 WILSON, J. N. "P" TAYLOR-INA TEXAS SECONDARY OIL CORPORATION 01879 WILSON, J. N., -A- TAYLOR-INA KLAEGER OPERATING COMPANY II,LLC 02948 WILSON, J. T. CROWN, E. (NAVARRO) WEN-BE 00367 WILSON, J. T. PEARSALL (AUSTIN CHALK) STONEGATE PRODUCTION COMPANY,LLC 14582 WILSON, J.A. CROWN, E. (NAVARRO) EXXCEL OPERATING COMPANY 00364 WILSON, J.T. PEARSALL (AUSTIN CHALK) EXXCEL OPERATING COMPANY 11906 WILSON, JAMES A. PEARSALL (AUSTIN CHALK) AMPAK OIL COMPANY 12473 WILSON, JAMES ET AL -A- B B B (OLMOS A) BRYMER CONTRACTING INCORPORATED 11877 WILSON, JESSE JR. PLUS FIVE JONICE (BUDA) RATHBUN PRODUCTION SERVICE INC. 06211 WILSON, JOHN A. -C- II CROWN, E. (NAVARRO) NINEVEH CORP. 09966 WILSON, JOHN A. JR. CROWN, E. (NAVARRO) ORTIZ, JOSE & SONS 03331 WILSON, JOS., -A- SALT FLAT EIGHTY-SIX OIL COMPANY, INC. 03143 WILSON, STELLA CROWN, E. (NAVARRO) DELGADO, EMIL A 00368 WILSON, THOMAS DUNLAP GEOMEG ENERGY OPERATING CO., LLC 06808 WILSON, VIOLA SMITHVILLE (AUSTIN CHALK) TEX-LEE OPERATING COMPANY 05566 WILTGEN, CARTER DEL MONTE R.B.S. OIL & GAS INC. 08388 WIMBERLEY, W. H. MINERVA-ROCKDALE NORTHLAND PETROLEUM, INC. 09438 WIMBERLY DEV. CORP. -A- TAYLOR-INA CHICKEN COOP, INC., THE 06677 WINANS LIVING TRUST SOMERSET SOUTHWEST LOOP 1604, LTD. 10800 WINANS LIVING TRUST "B" SOMERSET SOUTHWEST LOOP 1604, LTD. 10804 WINANS, ANDREW SOMERSET MCB C & J, LLC 10791 WINANS, ANDREW L. SOMERSET PETRO LIONS, LLC 10792 WINANS, R.E. SOMERSET PETRO LIONS, LLC 10788 WINBORN, R.F. A.W.P. (OLMOS) XTO ENERGY INC. 09677 WINDFALL UNIT PILGRIM (AUSTIN CHALK) FORD, DON H. & ASSOC. 13948 WINDSOR UNIT A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16438 WINDSOR UNIT B LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16440 WINDWEHEN-NORTHCUTT EAGLEVILLE (EAGLE FORD-1) FOREST OIL CORPORATION 16729 WINFIELD A UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16278 WINFIELD B UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16304 WINFIELD C UNIT EAGLEVILLE (EAGLE FORD-1) CARRIZO (EAGLE FORD) LLC 16173 WINKENWERDER, B.R. PEACH CREEK (AUSTIN CHALK) P-R-O MANAGEMENT, INC. 11681 WINKLER UNIT A EAGLEVILLE (EAGLE FORD-1) BURLINGTON RESOURCES O & G CO LP 16854 WINN SOMERSET AMINEX USA, INC. 11068 WINN RANCH EAGLE (AUSTIN CHALK) WINN EXPLORATION CO., INC. 06782 WINN RANCH EAGLE (EAGLE FORD) WINN EXPLORATION CO., INC. 05244 WINN RANCH EAGLE (1200) WINN EXPLORATION CO., INC. 04062 WINN RANCH EAGLE (3460) WINN EXPLORATION CO., INC. 08169 WINN RANCH EAGLE PASS (EAGLEFORD) WINN EXPLORATION CO., INC. 03544


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WINSLOW SUN T S H (OLMOS) SWIFT ENERGY OPERATING, LLC 14896 WINTERBOTHAM ZAV BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15744 WINTERS, ALYSE PRUITT PEARL, BILL H. PRODUCTIONS, INC. 11648 WINTERS, ALYSE PRUITT, S. (ESCONDIDO) PEARL, BILL H. PRODUCTIONS, INC. 09204 WINTERSHALL-GERKE UNIT PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 13014 WINTERSHALL-GERKE UNIT "A" PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 13086 WINTERSHALL-MEINERS PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 13243 WINTON UNIT PEARSALL (AUSTIN CHALK) CHESAPEAKE OPERATING, INC. 15049 WIPFF WIPFF (GEORGETOWN 2100) HOLLIMON OIL CORPORATION 15856 WIPFF SOUTH WIPFF (GEORGETOWN 2000) SHAW, T. G. OIL COMPANY, LTD. 16207 WIPFF, KARL WIPFF (GEORGETOWN 2000) SHAW, T. G. OIL COMPANY, LTD. 04049 WIPFF, KARL WIPFF (GEORGETOWN 2090-A) SHAW, T. G. OIL COMPANY, LTD. 04470 WISDOM SOMERSET RALYN CORP. 11694 WISEMAN PLEASANTON, E. (EDWARDS) PEARL, BILL H. PRODUCTIONS, INC. 09792 WISEMAN, H. W. LA VERNIA LIBERTY HEAD PETROLEUM, INC. 00912 WISHERT, LOVETT H. LA VERNIA LT OIL LLC 00880 WISHERT, LOVETTE H. -A- LA VERNIA MOJ ENERGY, L.L.C. 07421 WITHERS HONCHO-MAGUELLITOS (1300) FIRST UNITED OIL & GAS CORP. 07822 WITHERS, LOIS LULING-BRANYON FIELD OPERATING COMPANY, INC. 03683 WITHERS, LOIS LULING-BRANYON FIELD OPERATING COMPANY, INC. 07353 WITHERSPOON SOMERSET CALK OIL COMPANY 10742 WITHERSPOON -A- PILOSA, EAST (2ND SAN MIGUEL) WITHERSPOON OIL COMPANY 14096 WITHERSPOON -B- PILOSA, EAST (2ND SAN MIGUEL) WITHERSPOON OIL COMPANY 14097 WITTE, ELTON LA VERNIA NEW BEGINNING 06359 WITTE, ELTON (A) LA VERNIA NEW BEGINNING 05793 WITTER, C.L.UNIT A DALE-MCBRIDE EAGLE FORD OIL CO., INC. 04340 WK ACE UNIT 1 EAGLEVILLE (EAGLE FORD-1) BHP BILLITON PET(TXLA OP) CO 17075 WK GU 11 EAGLEVILLE (EAGLE FORD-1) BHP BILLITON PET(TXLA OP) CO 17066 WK GU 12 EAGLEVILLE (EAGLE FORD-1) BHP BILLITON PET(TXLA OP) CO 17089 WK UNIT 15 EAGLEVILLE (EAGLE FORD-1) BHP BILLITON PET(TXLA OP) CO 17254 WK UNIT 16 EAGLEVILLE (EAGLE FORD-1) BHP BILLITON PET(TXLA OP) CO 17251 WOEHLER, HERMAN E. JAYEDDIE, SOUTH LULING O&G LLC 08862 WOELFEL NOACK BLACK JACK SERVICES, L.L.C. 16020 WOLFE, ELLA MAE PEARSALL (AUSTIN CHALK) GODSEY & RILEY 06548 WONDRA, MELVIN FAIRFIELD GREAT PLAINS RESOURCES, INC. 10584 WOOD UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16906 WOOD, MAE LOU SOMERSET GREAT PLAINS RESOURCES, INC. 11096 WOOD, MAE LUE SOMERSET PETROSAURUS, INC. 05862 WOOD, ROBERT W. ET AL -A- ADAMS (BUDA) TEXAS SECONDARY OIL CORPORATION 04970 WOOD, WELDON KENS (SERPENTINE) R & S OIL PRODUCTION CO. 10211 WOODARD, MAGGIE MINERVA-ROCKDALE COMANCHE WELL SERVICE CORP. 09320 WOODBURY BRISCOE RANCH (EAGLEFORD) SANCHEZ OIL & GAS CORPORATION 16542 WOODBURY LORENZO (AUSTIN CHALK) SANCHEZ OIL & GAS CORPORATION 17274 WOODS, G.T. JORDAN (NAVARRO B) SHELDON RESOURCES, L.P. 12559 WOODS, HENRY CHEROKEE (NAVARRO) SHELDON RESOURCES, L.P. 04262 WOODS, HENRY I CHEROKEE (NAVARRO) SHOREHAM OIL & GAS COMPANY, INC. 11393 WOODS, RAY CHEROKEE (NAVARRO) SHELDON RESOURCES, L.P. 14730 WOODS, RAY CHEROKEE (NAVARRO) SHOREHAM OIL & GAS COMPANY, INC. 04048 WOODWARD PEARSALL (AUSTIN CHALK) CML EXPLORATION, LLC 16394 WOODWARD PEARSALL (AUSTIN CHALK) DOLPHIN PETROLEUM, LP 13232 WOODWARD A BRISCOE RANCH (EAGLEFORD) EXCO OPERATING COMPANY, LP 15419


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ WOOTTON UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 17051 WR "A" A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 14216 WR "K" A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 14125 WR "L" UNIT A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 14126 WRIGHT PEARSALL (AUSTIN CHALK) BRYMER, JACK CONTR. SERV. 14213 WRIGHT PEARSALL (AUSTIN CHALK) SOTEX OIL & GAS CORP. 07276 WRIGHT PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 13074 WRIGHT RANCH EAGLEVILLE (EAGLE FORD-1) SANCHEZ OIL & GAS CORPORATION 15655 WRIGHT RANCH PEARSALL (AUSTIN CHALK) BHEC CORPORATION 12659 WRIGHT TRUST WILDCAT MARATHON OIL EF LLC 17250 WRIGHT-AVANT "A" UNIT PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 13187 WRIGHT-AVANT UNIT PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 13140 WRIGHT-HENKE UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17021 WRIGHT-KEATHLEY UNIT EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 16201 WRIGHT-MASON MOLLIE (AUSTIN CHALK) BOBCAT OPERATING 11688 WRIGHT, -B- SPILLER TRI-W OIL 03959 WRIGHT, E. KYOTE IMPETRO OPERATING LLC 10111 WRIGHT, EMILY SOMERSET PETROSAURUS, INC. 11144 WRIGHT, EMORY KYOTE B-F SERVICE COMPANY 06737 WRIGHT, GOLDIE SPILLER NJP OIL & GAS LLC 09028 WRIGHT, H.R. PEARSALL (AUSTIN CHALK) WILLIAMS, CLAYTON ENERGY, INC. 12136 WRIGHT, J. D. SALT FLAT LULING O&G LLC 01476 WRIGHT, J. D. -A- SALT FLAT B-3 OIL CO. 04059 WRIGHT, JEFF SPILLER DELRAY OIL, INC. 03110 WRIGHT, P. SPILLER GINCO OPERATING CO. 03518 WRIGHT, PIERCE SPILLER GREAT PLAINS RESOURCES, INC. 01676 WRIGHT, PIERCE -A- SPILLER GREAT PLAINS RESOURCES, INC. 02001 WRIGHT, PIERCE EST. -B- SPILLER SAUR, JERRY 03422 WRIGHT, W. A. SPILLER GINCO OPERATING CO. 01668 WRIGHT, W. A. -A- SPILLER TRI-W OIL 01850 WRIGHT, W.A. -C- SPILLER TRI-W OIL 07440 WRK WRK (JACKSON 2250) C. M. OIL CORPORATION 14375 WTMB GADDIS UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16442 WYATT, EDDIE LA VERNIA JWC OIL OPERATOR, LLC 00893 WYATT, GEORGE L. CHICON LAKE GENIE OIL COMPANY 02148 WYE RANCH 01 EAGLEVILLE (EAGLE FORD-1) PIONEER NATURAL RES. USA, INC. 16940 WYE RANCH 02 EAGLEVILLE (EAGLE FORD-1) PIONEER NATURAL RES. USA, INC. 16982 WYE RANCH 03 EAGLEVILLE (EAGLE FORD-1) PIONEER NATURAL RES. USA, INC. 17253 WYE RANCH 04 EAGLEVILLE (EAGLE FORD-1) PIONEER NATURAL RES. USA, INC. 17255 Y BAR CARRIZO SWIFT ENERGY OPERATING, LLC 15664 Y BAR EF EAGLEVILLE (EAGLE FORD-1) SWIFT ENERGY OPERATING, LLC 15440 Y BAR MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16919 Y BAR RANCH EAGLEVILLE (EAGLE FORD-1) TALISMAN ENERGY USA INC. 15837 Y-BAR EAGLEVILLE (EAGLE FORD-1) MURPHY EXPL. & PROD. CO. - USA 15530 YAKESCH MILANO (GEORGETOWN) ALLIED OPERATING TEXAS, LLC 17155 YANCEY, J.W. CROWN, E. (NAVARRO) STARBURST ENERGY, INC. 05973 YANCY CROWN, E. (NAVARRO) BLACK SABLE ENERGY, LLC 15080 YANCY A CROWN, E. (NAVARRO) BLACK SABLE ENERGY, LLC 15163 YANCY B CROWN, E. (NAVARRO) BLACK SABLE ENERGY, LLC 15162 YANCY SWD PEARSALL (AUSTIN CHALK) BLACK SABLE ENERGY, LLC 15245 YARBROUGH LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15745


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ YEAGER, EWELL CHARLOTTE (NAVARRO) ENERVEST OPERATING, L.L.C. 03310 YEAGER, V. HASSE (BUDA) SEDCO RESOURCES INC 07798 YOAST YOAST CIBOLO ENERGY OPERATING, INC. 15030 YOLANDA VILLARREAL PEARSALL (AUSTIN CHALK) ALAMO OPERATING COMPANY, L. C. 15713 YOSKO A EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16829 YOSKO B EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 16767 YOUNG, CHESTER LULING-BRANYON SHEFTS & SHEFTS, INC. 01047 YOUNG, DANIEL LA VERNIA DONOCO OIL COMPANY 10007 YOUNG, J. M. LULING-BRANYON EAGLE FORD OIL CO., INC. 03641 YOUNG, J. M. LULING-BRANYON E & W OIL, INC. 01035 YOUNG, J. M. LULING-BRANYON GINCO OPERATING CO. 02068 YOUNG, J. M. LULING-BRANYON SHEFTS & SHEFTS, INC. 02475 YOUNG, J. M. -A- LULING-BRANYON GINCO OPERATING CO. 01133 YOUNG, J. M. -B- LULING-BRANYON GINCO OPERATING CO. 04202 YOUNG, J. M., -C- LULING-BRANYON GINCO OPERATING CO. 03887 YOUNG, J. M.,-50 AC. LULING-BRANYON E & W OIL, INC. 04497 YOUNG, T. C. FAIRFIELD CRYSTAL RESOURCES, INC 02446 YOUNGBLOOD MINERVA-ROCKDALE OMNI OIL & GAS, INC. 01244 YOUNGBLOOD, J.W. MINERVA-ROCKDALE LITTLE RIVER OPERATING CORP. 08357 YTUARTE -A- SOMERSET SEAGULL OPERATING CO., INC. 03567 YTURRI BRS -B- SOMERSET GREAT PLAINS RESOURCES, INC. 11404 YTURRI GOTHAM SOMERSET GREAT PLAINS RESOURCES, INC. 11518 YTURRI-HARBO "1985" SOMERSET GREAT PLAINS RESOURCES, INC. 11389 ZACHRY FAIRFIELD BARNES OIL COMPANY 01944 ZAIONTZ EAGLEVILLE (EAGLE FORD-1) HUNT OIL COMPANY 15803 ZALMANEK, J. W. MILBUR (POTH) EXPLORATION TECHNIQUES INC. 15081 ZAMORA UNIT I A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15983 ZAMORA UNIT II A LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16165 ZAMORA WEST UNIT LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16175 ZAPPE COUSINS (QUEEN CITY 5740) C. M. OIL CORPORATION 14311 ZAPPE UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 15321 ZAVADIL PILGRIM (AUSTIN CHALK) ORIGIN PROD CO GONZALES PROP LLC 14701 ZAVADIL, LOUIS PILGRIM (AUSTIN CHALK) LUCAS ENERGY, INC. 05695 ZAVALA ELAINE, N. (SAN MIGUEL SAND) BOTASCH OPERATING, LLC 12726 ZAVISCH A.W.P. (OLMOS) WAPITI OPERATING, LLC 12066 ZAVISCH -A- A.W.P. (OLMOS) WAPITI OPERATING, LLC 14506 ZAVISCH -751- WHEELER-MAG (1200) PETROLEUM PRODUCTION ENGINEERING 07367 ZCW EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 15765 ZCW UNIT A EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 17096 ZCW UNIT B EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 16004 ZEDLER DARST CREEK (BUDA) ENERGY 2000, INC. 14228 ZEDLER DARST CREEK (BUDA) GINCO OPERATING CO. 04016 ZEDLER SALT FLAT SAUR, JERRY 02883 ZEDLER "A" DARST CREEK (BUDA) OCCIDENTAL ENERGY COMPANY, INC. 02733 ZELLA CROMWELL RANCH AUSTIN PIERCE (AUSTIN CHALK) CABOT OIL & GAS CORPORATION 15240 ZELLA CROMWELL RANCH EAGLEVILLE (EAGLE FORD-1) CABOT OIL & GAS CORPORATION 15351 ZEPEDA BUCHANAN SOUTHRIDGE OPERATING COMPANY 13197 ZEPEDA, FERNANDO PEARSALL (AUSTIN CHALK) SCHAARON INTERNATIONAL ENERGY 05306 ZGABAY A EAGLEVILLE (EAGLE FORD-1) GEOSOUTHERN ENERGY CORPORATION 16785 ZIDEK-MIKES UNIT NICKEL (AUSTIN CHALK) CHALLENGER OIL 06375 ZIENTEK NORTH UNIT DIM BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 16041


DISTRICT 01

------------------------------------------------------------------------------------------------------------------------------------ ---LEASE NAME--- FIELD NAME ORGANIZATION LEASE NAME NUMBER------------------------------------------------------------------------------------------------------------------------------------ ZIENTEK UNIT A BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15707 ZIENTEK UNIT B BRISCOE RANCH (EAGLEFORD) CHESAPEAKE OPERATING, INC. 15613 ZIMMERELE, CLARA C. TAYLOR-INA GINCO OPERATING CO. 10613 ZIMMERMAN UNIT EAGLEVILLE (EAGLE FORD-1) EOG RESOURCES, INC. 16227 ZIZINIA EAGLEVILLE (EAGLE FORD-1) CHEYENNE PETROLEUM COMPANY 15884 ZLS EAGLEVILLE (EAGLE FORD-1) MATADOR PRODUCTION COMPANY 17026 ZOBOROSKI, FRED DARST CREEK (BUDA) GREAT PLAINS RESOURCES, INC. 03514 ZR UNIT "B" A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 14241 ZR UNIT "C" A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 14280 ZR UNIT "D" A.W.P. (OLMOS) SWIFT ENERGY OPERATING, LLC 14217 ZUEHL, EDGAR LA VERNIA PETRO-SHELL, INC. 10291 1ST LOCKHART NATIONAL BANK LULING-BRANYON WESTSTAR PETROLEUM CORPORATION 09481 3C UNIT PEARSALL (AUSTIN CHALK) RICOCHET ENERGY, INC. 16225 7K UNIT I LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16183 7K UNIT II LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16190 7K UNIT III LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16841 7K UNIT IV LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16236 7K UNIT V LAS EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 16235 74 RANCH SPECIAL UNIT EAST EAGLEVILLE (EAGLE FORD-1) MARATHON OIL EF LLC 17193 76 RANCH MCM EAGLEVILLE (EAGLE FORD-1) CHESAPEAKE OPERATING, INC. 15603 89 RANCH PEARSALL (AUSTIN CHALK) JB OIL & GAS WELL SERVICE 12643

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