may 29, 2015 railroad commission of texas page 128 …€¦ · 5/29/2015 · b.u....

MAY 29, 2015 RAILROAD COMMISSION OF TEXAS PAGE 128 LEASE NAME INDEX LISTING (GSM019) DISTRICT 02

------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ FOUR WAY RANCH 22 LOLITA, DEEP (SIMPSON 8500) MCGOWAN WORKING PARTNERS, INC. 250487 A. GORDON GAS UNIT 3 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 150304 A. VAUGHN UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 263785 A. VAUGHN UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 273490 ABBOTT, S. A. 5 LOLITA, DEEP (SIMPSON 8500) MCGOWAN WORKING PARTNERS, INC. 121497 ABRAMEIT 1 WEESATCHE, NE. (WILCOX 10,030) KEBO OIL & GAS, INC. 174876 ABRAMEIT 2 CONSOLIDATED (WILCOX 10500) KEBO OIL & GAS, INC. 181326 ABRAXAS S. YOAKUM SWD 1 YOAKUM (WILCOX 7300) ABRAXAS PETROLEUM CORPORATION 171495 ACE WALKER NO.1 2ST FT. MERRILL, NORTH (11800) JAMEX, INC. 198096 ADAMEK UNIT 1H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 274673 ADCOCK, RICHARD 1 RICHARD ADCOCK (MIOCENE 2240) BLUEBONNET EXPLORATION COMPANY 125002 ADIX UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 274297 ADIX UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 275766 AFFLERBACH 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 263733 AFFLERBACH 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268534 AGNES WEST 6 VICTORIA STEWARDSHIP RESOURCES 263859 ALAMO NATIONAL BANK 1 ATKINSON (KLINGEMAN) LODESTAR PACIFIC CORPORATION 076579 ALBERT GORDON GAS UNIT 5 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 187827 ALBERT GORDON GAS UNIT 6 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 193185 ALBERT SAGER GAS UNIT 5 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 232055 ALBERT SAGER GAS UNIT 6 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 238005 ALBERT SMOLIK UNIT 1 5 WORD, N. (EDWARDS) WHITING OIL AND GAS CORPORATION 161752 ALBERTA GAYLE 11 MAURBRO (5530) KD ENERGY, LLC 229707 ALBRECHT 1 JOBAR (YEGUA) ROCK RESOURCES, INC. 207780 ALBRECHT 1 WEESATCHE, NE. (HOLT FB A) HURD ENTERPRISES, LTD. 188997 ALBRECHT 1 WEESATCHE, WEST (SLICK) NADSOILCO LLC 197431 ALBRECHT 1A BRANDT HURD ENTERPRISES, LTD. 212127 ALBRECHT 3 WEESATCHE, NE. (HOLT FB A) HURD ENTERPRISES, LTD. 203170 ALBRECHT 4 MISSION VALLEY, W.(WILCOX 10600) XTO ENERGY INC. 179346 ALBRECHT 5 MISSION VALLEY, W.(WILCOX 10600) XTO ENERGY INC. 228590 ALBRECHT, A. M. 1 C BOYCE (RECKLAW) NELSON, JAMES L. 000963 ALBRECHT, A. M. 1 T BOYCE (WILCOX C SLICK) NELSON, JAMES L. 000977 ALBRECHT, A. M. B 2 BOYCE (RECKLAW) ADVANTAGE OIL & GAS, INC. 061965 ALBRECHT, ARCO V. 1 CABEZA CREEK, S. (BEAUCHAMP) DEWBRE PETROLEUM CORPORATION 119189 ALBRECHT, EMMETT 1 WEESATCHE, NE. (HOLT FB A) HURD ENTERPRISES, LTD. 268023 ALBRECHT, ESTELLE 1 JOBAR (YEGUA) TIDEWATER MINERALS CORPORATION 167796 ALBRECHT, P. A. 1 BOYCE (PETTUS) BAYPORT OPERATING, INC. 079808 ALBRECHT, P. A. 2B BOYCE (RECKLAW) A.O.E. OPERATORS, INC. 074282 ALBRECHT, P. A. -B- 1 BOYCE (RECKLAW) BAYPORT OPERATING, INC. 090941 ALBRECHT, V. 3 JOBAR (YEGUA) ROCK RESOURCES, INC. 249870 ALBRECHT, W. D. 1 WESER (RECKLAW 7560) 324 OIL & GAS, LTD. 162508 ALDIS A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264227 ALEXANDER GAS UNIT 1 1 SPEARY (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 255054 ALEXANDER GAS UNIT 1 2 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 267294 ALEXANDER 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267012 ALEXANDER 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268794 ALEXANDER 01 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271858 ALEXANDER 01 04H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271721 ALEXANDER 01 05H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271811 ALEXANDER, M. S., ET AL 1 SPEARY (WILCOX 9500) OKIE OPERATING COMPANY, LTD. 004228 ALGEA 1 MALCOMB (1270) MAGNUM ENGINEERING COMPANY 168121


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ ALGEA GAS UNIT 2 ORANGEDALE (LULING, LOWER) WAGNER OIL COMPANY 147028 ALGEA GAS UNIT 3 THEIS, SOUTH(SLICK FIRST) MAGNUM ENGINEERING COMPANY 212589 ALGEA, ADOLPH B. 1 ORANGEDALE (LULING) WAGNER OIL COMPANY 038788 ALLEN 1 PROVIDENT CITY (2400) CAMOIL, INC. 135474 ALLEN 1A PROVIDENT CITY (2400) CAMOIL, INC. 140819 ALLEN "A" 1 A. B. ALLEN (MIOCENE 2200) ALTA MESA SERVICES, LP 210570 ALLEN GAS UNIT 1 HOUND DOG (MID. WILCOX 12000) HILCORP ENERGY COMPANY 154631 ALLEN, B. 1 RAMIRENA (Y- 5) MAROCO 136947 ALLEN, B. 2 RAMIRENA (Y- 5) HAMMIT PETROLEO 129253 ALLEN, B. 3 E RAMIRENA (Y-15A) MAROCO 003849 ALLEN, B. 3 G RAMIRENA (Y- 5) MAROCO 003848 ALLEN, G. W. 5 SLICK (YEGUA 4760) THUNDERBIRD ENERGY, INC. 140334 ALLEN, G.W. 2 SLICK (PETTUS) THUNDERBIRD ENERGY, INC. 130933 ALLEN, G.W. 2 SLICK (YEGUA 4760) THUNDERBIRD ENERGY, INC. 131621 ALTHEA 1 ANNA BARRE, N. (YEGUA 5260) A & D EXPLORATION COMPANY 173206 ALTMAN 1 BOYCE (HOCKLEY) NELSON, JAMES L. 145726 ALTMAN 1 BOYCE (RECKLAW) NELSON, JAMES L. 218021 ALTMAN F 1 BOYCE (4590 SAND) NELSON, JAMES L. 105681 ALTMAN F 2 BOYCE (PETTUS) NELSON, JAMES L. 111335 ALTMAN, F. L. 1 CHRISTMAS, DEEP (WILCOX 10800) ELAND ENERGY, INC. 051339 ALTMAN, WILLIAM B. 1 BOYCE (RECKLAW) NELSON, JAMES L. 089864 ALTMAN, WM. 2 BOYCE (RECKLAW) NELSON, JAMES L. 098996 ALUMINUM COMPANY OF AMERICA FEE 6 LAVACA BAY (F-45) NEUMIN PRODUCTION COMPANY 045958 ALUMINUM COMPANY OF AMERICA FEE 9 LAVACA BAY (F-40-B) NEUMIN PRODUCTION COMPANY 113423 ALVARADO 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268861 AMANDA OLSON GAS UNIT 3 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 175045 AMANDA OLSON GAS UNIT 4 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 190049 AMANDA OLSON GAS UNIT 5 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 192590 AMANDA OLSON GAS UNIT 6 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 193241 AMOCO FEE 2 LOST FORK (YEGUA 6500) TAG OPERATING COMPANY, INC. 139127 ANDERS, LEONA M. GAS UNIT 1 CHARLIE DAUBERT (9400) CIMAREX ENERGY CO. OF COLORADO 134964 ANDERSON 1 WORD (8900) TRIO CONSULTING & MANAGEMENT,LLC 221411 ANDERSON, E. 1 LONNIE GLASSCOCK (OAKVILLE, UP.) STEVENSON, H. E. 045554 ANDERSON, MARY ALICE ET AL 'A' 11 FAGAN (1900) MARAN OIL COMPANY 272686 ANDERSON, MARY ALICE ET AL "A" 3 FAGAN (1900) MARAN OIL COMPANY 269190 ANDERSON, MARY ALICE ET AL "A" 3 FAGAN (2350) MARAN OIL COMPANY 147085 ANDERSON, W. S. 1 WILLOW CREEK (6300) SUNRAY MID-CONTINENT OIL CO. 004744 ANGERSTEIN, E. F. UNIT #2 2 U COOK, S. (WILCOX, LO. 10,850) AURORA RESOURCES CORPORATION 034489 ANGERSTEIN, H O 1 COTTONWOOD CREEK, S. (FRIO 2300) MAGNUM PRODUCING, LP 207897 ANN 1 TELFERNER, NORTH (3600 FRIO) CML EXPLORATION, LLC 272726 ANNIE REILLY ET VIR 3G TOM O'CONNOR (3560) HILCORP ENERGY COMPANY 144485 ANNIE REILLY ET VIR 5 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 266682 ANNIE REILLY ET VIR 6 TOM OCONNOR (4800) HILCORP ENERGY COMPANY 255691 ANNIE REILLY ET VIR 12 TOM OCONNOR (3900) HILCORP ENERGY COMPANY 261055 ANNIE REILLY ET VIR 17 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 272304 ANNIE REILLY ET VIR 22 TOM OCONNOR (5400 SAND) HILCORP ENERGY COMPANY 270563 APPELT GAS UNIT 1 L WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 229830 APPELT GAS UNIT 1 U WORD (WILCOX, LOWER) PIONEER NATURAL RES. USA, INC. 251413 APPELT GAS UNIT 2 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 233311 APPELT GAS UNIT 3 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 234774 APPLING 1 APPLING DEEP (FRIO) HEMCO DEVELOPMENT, LLC 216627


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ APPLING FARMS 1 VIENNA (FRIO 2850) GULF COAST ACQUISITIONS CO. L.C. 230800 APPLING FARMS 1 VIENNA (8450) MAGNUM PRODUCING, LP 181968 APPLING-STOVALL 1A APPLING (SEG C 7600) KAISER-FRANCIS OIL COMPANY 233674 APPLING-STOVALL 1A APPLING (SEG 5 7500) KAISER-FRANCIS OIL COMPANY 267693 ARC - THOMSON - BARROW 3 BURKES RIDGE (VKSBG 4800) AURORA RESOURCES CORPORATION 229827 ARCO COOLEY 3 MISSION VALLEY,W(WCX 10600 SEG2) ENDEAVOR NATURAL GAS, LP 115707 ARCO COOLEY 4 MISSION VALLEY, W.(WILCOX 10600) ENDEAVOR NATURAL GAS, LP 182781 ARCO SANGER ESTATE 2 MOUNTAIN VIEW (WILCOX 9350) WAGNER OIL COMPANY 111042 ARCO SANGER ESTATE 3 MOUNTAIN VIEW (WILCOX 10400) WAGNER OIL COMPANY 113560 ARNECKE 1 WEESATCHE, SW. (COOK MT. 5300) ACOCK OPERATING LIMITED 184379 ARNECKE 1 WEESATCHE, SW. (YEGUA 4750) SADDLE LAKE ENERGY, LLC 201408 ARNECKE A 1 WILDCAT SADDLE LAKE ENERGY, LLC 274972 ARNOLD 1 OAKVILLE (WILCOX CONS.) WELDER EXPLORATION & PROD., INC. 235468 ARNOLD UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 263531 ARNOLD UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272855 ARNOLD UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266453 ARNOLD UNIT B 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 269842 ARNOLD, DENNIS ET AL 2 GOTTSCHALT (RECKLAW 7300) PROGENIES OPERATING LLC 001736 ARNOLD, F. A. ET AL 1 GOTTSCHALT (PETTUS) NELSON, JAMES L. 097692 ARNOLD, KARL G. 1 MINERAL, WEST (FRIO) TRANS WEST OIL & GAS, INC. 071174 ARNOLD, SUSIE 1 C POEHLER (YEGUA -A-) NELSON, JAMES L. 036572 ARTHUR RICHTER GAS UNIT 1 GEORGE WEST, WEST (7900) AURORA RESOURCES CORPORATION 001712 ARTHUR RICHTER GAS UNIT 2 GEORGE WEST, W. (7250) AURORA RESOURCES CORPORATION 102064 ASHLAND GAS UNIT 1 CAESAR, SOUTH (5650) RINCON PETROLEUM CORPORATION 190807 ASHLAND-EBERSTADT A 1 CAESAR, E. (5800) EQUIPMENT HOT LINE 124335 ATKINSON FIELD GAS UNIT #2 1 ATKINSON (4250) KEBO OIL & GAS, INC. 048063 ATKINSON FIELD GAS UNIT #4 2 ATKINSON (4250) KEBO OIL & GAS, INC. 054088 ATKINSON GAS STORAGE 1 ATKINSON (4250) KEBO OIL & GAS, INC. 184137 ATKINSON, MARY E. 1 RICHARD ADCOCK (5500) MARWELL PETROLEUM LTD PARTNRSHIP 003970 ATKINSON, MARY ET AL 1 B RICHARD ADCOCK (2950) KLOTZMAN, M. S. EXPLORATION CO. 273437 ATKINSON, W. H. 1 GREEN (QUEEN CITY) MERI-TECH PRODUCTION CO., INC. 095538 ATKINSON, W. H. 3 GREEN, E. (QUEEN CITY) MERI-TECH PRODUCTION CO., INC. 100094 ATKINSON, W.H. 920 1 GREEN, E. (QUEEN CITY) MERI-TECH PRODUCTION CO., INC. 140237 ATOKA-GOHLKE 1 SPEARY, EAST (WILCOX 9800) MASTODON OPERATING COMPANY, LLC 207018 AUNT AUDREY 1 YOWARD (9200) BRITANCO, L.L.C. 223302 AUSTIN, P. R. 6 POWDERHORN (2-A) BEP OPERATING, LLC 145421 B. B. GAYLE 14 C CLIP (3580) J&G OIL & GAS 249998 B. B. GAYLE 14 T CLIP (VICKSBURG, LOWER) J&G OIL & GAS 242789 B. U. - SPIELHAGEN 2 BURNELL (SLICK, UPPER) TRINITY RIVER ENERGY OPER, LLC 097907 B. U. LULING-BOYCE A 24 BURNELL (SLICK) TRINITY RIVER ENERGY OPER, LLC 044495 B. U. MAGNOLIA-INGRAM 1 BURNELL (SLICK) TRINITY RIVER ENERGY OPER, LLC 039706 B. U. PAN AMERICAN-SPIELHAGEN 9 BURNELL (SLICK) TRINITY RIVER ENERGY OPER, LLC 046170 B. U. STANOLIND-SPIELHAGAN 8 BURNELL (REKLAW) TRINITY RIVER ENERGY OPER, LLC 022796 B. U.-AMOCO-SPIELHAGEN 12 BURNELL (SLICK, UPPER) TRINITY RIVER ENERGY OPER, LLC 074279 B. U.-BOYCE 1 L BURNELL (LULING) TRINITY RIVER ENERGY OPER, LLC 080774 B. U.-LULING-BOYCE B 26 BURNELL (LULING) CYMRI, L.L.C. 001046 B. U.-MOBIL-STIEREN 1 BURNELL (LULING) TRINITY RIVER ENERGY OPER, LLC 038057 B. U.-STANOLIND-LYONS 6 BURNELL (SLICK) TRINITY RIVER ENERGY OPER, LLC 062616 B. U.-UNION-HALL 1 BURNELL (LULING) TRINITY RIVER ENERGY OPER, LLC 001054 B. U.-UNION-NORTON-SPIELHAGEN 2 BURNELL (REKLAW) TRINITY RIVER ENERGY OPER, LLC 001029 B.U. PAN AMERICAN - RUHMAN B3 BURNELL (SLICK) TRINITY RIVER ENERGY OPER, LLC 151430


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ B.U. UNION-NORTON-SPIELHAGEN 1 BURNELL (REKLAW) TRINITY RIVER ENERGY OPER, LLC 258528 B.U.-BOYCE W 1 BURNELL (REKLAW) TRINITY RIVER ENERGY OPER, LLC 177896 BABB 3R EL TORO MAX, W. (EY-2) ALTA MESA SERVICES, LP 273964 BABER 1 PROVIDENT CITY (WILCOX 9970) NEWFIELD EXPLORATION COMPANY 135076 BADE 1 SECOND CHANCE (ROEDER) J.W. SERVICE COMPANY 155041 BAECKER 1 C ANDER, SOUTH (2300) MOORE OIL & GAS, INC. 089299 BAILEY UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 269105 BAILEY-RETZLOFF UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270325 BAILEY-RETZLOFF UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268957 BAILEY-RETZLOFF UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 269282 BAILEY, IVA 2 SIBLEY (3250) RAWHIDE OPERATING, INC. 234331 BAKER 1 GOLIAD, WEST (10,600 SD) OAK ENERGY, LLC 139234 BAKER FAMILY TRUST 2 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 255356 BAKER FAMILY TRUST 3 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 255736 BAKER FAMILY TRUST 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271610 BAKER FAMILY TRUST A401 1 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 245465 BAKER GAS UNIT 1 WILDCAT WHITING OIL AND GAS CORPORATION 254431 BAKER TRUST 3 BRAZIL (1ST TOM LYNE) RUTHERFORD OIL CORPORATION 148480 BAKER TRUST 3ST BRAZIL (TOM LYNE 2) RUTHERFORD OIL CORPORATION 190666 BAKER-BARNES 1 GATA (WILCOX 12500) LAVACA RIVER OPERATING CO., LLC 179898 BAKER-BARNES 2 GATA (WILCOX 12500) LAVACA RIVER OPERATING CO., LLC 177891 BAKER, E. 2 MIKESKA (MASSIVE WILCOX) MILAGRO EXPLORATION, LLC 175922 BAKER, E. 11 A BAKER (WILCOX 10000) MAGNUM PRODUCING, LP 144444 BAKER, EARL 1A BAKER (WILCOX 10000) MAGNUM PRODUCING, LP 127436 BAKER, EARL 6A BAKER (WILCOX 10000) RUTHERFORD OIL CORPORATION 126637 BAKER, EARL 7AL BAKER (WILCOX 10600) MAGNUM PRODUCING, LP 127572 BAKER, EARL 7AU BAKER (WILCOX 10000) MAGNUM PRODUCING, LP 127437 BALLARD 1 WILDCAT WELDER EXPLORATION & PROD., INC. 239253 BALLARD 1 RUDMAN (CANNAN SD. 9720) WELDER EXPLORATION & PROD., INC. 227236 BALLARD, CLAUDE 1 RUDMAN (CANNAN SD. 9720) HUGHES, DAN A. COMPANY, L.P. 225140 BAMMERT 3 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 200768 BAMMERT 4 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 207638 BAMMERT 5 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 206412 BAMMERT 6 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 215482 BAMMERT -B- 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 215772 BAMMERT A 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 220205 BANKHEAD, A. J. FEE 1 WITTE (FRIO 6600) BANKHEAD, A. J. 004765 BARBER 1 BLANCO CREEK (FRIO 4700-CARTER) CORE E & P CORP. 137030 BARBER 1 BLANCO CREEK (FRIO 4700-CARTER) JTB OIL COMPANY, INC. 135295 BARBER 2 BLANCO CREEK (4500) JTB OIL COMPANY, INC. 138601 BARBER RANCH 2 BLANCO CREEK (6600) CUMMINS & WALKER OIL CO., INC. 184139 BARBER RANCH LTD 3H BLANCO CREEK (7100) POOL OPERATING CORPORATION 268187 BARBOZA UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 264095 BARBOZA UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271132 BARBOZA UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271148 BARBOZA UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270944 BARBOZA UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270866 BARGMANN TRUST UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266766 BARNES 1 GATA (14,100 SAND) VIPER S.W.D., LLC 247281 BARNES 1 HOPE (FRIO 2950) BARNES MINERAL PRODUCTION, LTD. 164643 BARNES 1 NEIGHBORHOOD (LOWER WILCOX) CANTERA OPERATING, LLC 242929


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BARNES 1 RUSSEK BARNES MINERAL PRODUCTION, LTD. 091441 BARNES, LEON 2 GATA (WILCOX 11,800 SAND) XTO ENERGY INC. 253217 BARNES, LEON 2 GATA (WILCOX 12500) XTO ENERGY INC. 174114 BARNES, LEON 3 WILDCAT XTO ENERGY INC. 200940 BARNES, LEON 3 GATA (WILCOX 11,800 SAND) XTO ENERGY INC. 198831 BARNES, LEON 3 GATA (WILCOX 12500) XTO ENERGY INC. 174746 BARNES, LEON 4 GATA (WILCOX 12500) XTO ENERGY INC. 174748 BARNES, LEON 6-L GATA (WILCOX 12500) XTO ENERGY INC. 177114 BARNES, LEON 6-U GATA (WILCOX 10,600) XTO ENERGY INC. 178858 BARNETT, P. M. UNIT 1 KELLERS CREEK, S. (8850) PONTIAC OIL, INC. 134558 BARNHART 1 FRED LONG (HOCKLEY 3850) CORENERGY OPERATING GROUP, LLC 172726 BARNHART 2 FRED LONG (HOCKLEY 3850) CORENERGY OPERATING GROUP, LLC 172735 BARRE 1 GUN POINT (WILCOX MIDDLE, 11000) WAGNER OIL COMPANY 215306 BARROW 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 266958 BARROW 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 269567 BARROW 01 03H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 270125 BARROW 01 04H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 269397 BARROW 01 05H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 276230 BARROW 01 06H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 276235 BARROW 01 07H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 276335 BARROW 01 08H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 276448 BARROW, LAURA T. 14 LAURA THOMSON, S. (5200) DURANGO RESOURCES CORP. 058175 BARROW, LAURA T. 15 LAURA THOMSON (4850) DURANGO RESOURCES CORP. 091875 BARRY 1 KASPER, S. (KNAVE) PETRO-HUNT, L.L.C. 205501 BARRY 2 ARNECKEVILLE, S (Y-7) MILAGRO EXPLORATION, LLC 237717 BARTLETT 1 OAKVILLE (MID WILCOX 9200) FAULCONER, VERNON E., INC. 159357 BARTLETT 2 OAKVILLE (MID WILCOX 9200) FAULCONER, VERNON E., INC. 166666 BASES LOADED 1 CHOATE, S. (WILCOX 8500) CB ENERGY, LLC 182578 BASS, M. F. 1 PRIDHAM LAKE (1560) B.P. PRODUCTIONS INC. 069561 BASS, M. F. 3 PRIDHAM LAKE (2450) B.P. PRODUCTIONS INC. 069563 BAST, C. H. - MINERAL UNIT 1 MINERAL (MACKHANK, LO.) RINCON PETROLEUM CORPORATION 070765 BATEMAN 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269103 BATEY-POWELL GAS UNIT 1 REA-GOL (13800 SD) GAITHER PETROLEUM CORPORATION 211683 BAUER 1 MCFADDIN, NORTH (6000) AGOIL, INC. 089414 BAUER, CLAIRE MARY ET VIR 4-C TOM OCONNOR (4200) HILCORP ENERGY COMPANY 145883 BAUER, MADDELINE ET AL 1 HEYSER (3550) VIOLA PROD., INC. 118427 BAUER, MARY CLAIRE ET VIR 4-T TOM O'CONNOR (5350 SAND) HILCORP ENERGY COMPANY 137860 BAUER, MARY CLAIRE ET VIR 6 GRETA (L- 6 WEST) HILCORP ENERGY COMPANY 212571 BAUMANN GAS UNIT 1H WARMSLEY, S. (10550) WINN EXPLORATION CO., INC. 251990 BAUMANN GAS UNIT 2H WARMSLEY, S. (10550) WINN EXPLORATION CO., INC. 250086 BAUMANN UNIT A DEW 1H EAGLEVILLE (EAGLE FORD-2) CHESAPEAKE OPERATING, L.L.C. 273143 BAUMANN UNIT A DEW 2H EAGLEVILLE (EAGLE FORD-2) CHESAPEAKE OPERATING, L.L.C. 273146 BAUMGARTNER -A- 2 DUDLEY CAMPBELL (1800) T-C OIL COMPANY, LLC 260563 BAUMGARTNER -A- 3 DUDLEY CAMPBELL (FRIO 6200) T-C OIL COMPANY, LLC 275006 BAUMGARTNER -A- 3 VIDAURI, NORTH (6400) T-C OIL COMPANY, LLC 250674 BAYLOR UNIVERSITY 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269564 BAYOU BENGAL B-13 1 BAYOU BENGAL (FRIO) HEMCO DEVELOPMENT, LLC 216389 BEACHAMP 3 ALBRECHT (HOCKLEY) PHILLIP, DAVID MARTIN 116878 BEALL 1 LAGARTO (PETTUS) ROYAL PRODUCTION COMPANY, INC. 267173 BEALL 2 LAGARTO CREEK (YEGUA) ROYAL PRODUCTION COMPANY, INC. 272483 BEALL ESTATE 1 LAGARTO (2300) FORAN, LESTER, TRUSTEE 002573


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BEAMON, R. E. ET AL 1 EL TORO, SOUTH (5650 SD.) OIL WELL BUYERS CORP. 114616 BEAN, C. UNIT 1 MINERAL, WEST (11000) WOFFORD, C. J. 105752 BEAR CREEK RANCH 2 SINGLETON, E. (HOCKLEY) BELLOWS OPERATING CO., L. C. 157869 BEARDSLEY UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266286 BEASLEY 1 YOUGEEN, SOUTH (3200) WELDER EXPLORATION & PROD., INC. 184646 BEAUCHAMP 1 A-B-R (WILCOX 3RD, MASSIVE) RESACA RESOURCES, L.L.C. 258595 BECK 1 HAILEY (PETTUS) CONTINENTAL EXPLORATION, L.L.C. 168725 BEGO 1 ALKEK, WEST (FRIO 3700) NORTH SHORE ENERGY, L.L.C. 190577 BEGO 1 BEGO (CONSOLIDATED) CODY ENERGY LLC 152752 BEGO 4 ALKEK, WEST (FRIO 3850) CRESTON PETROLEUM CORP. 175330 BEGO GAS UNIT 1-C BEGO (CONSOLIDATED) CODY ENERGY LLC 168118 BEGO GAS UNIT 3 BEGO (CONSOLIDATED) CODY ENERGY LLC 214441 BEGO RANCH 1 ALKEK (BUFORD SAND) CRESTON PETROLEUM CORP. 093784 BEGO TRUST 1H KAWITT (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 162278 BEHRENS GAS UNIT 1 4 BRANDT (4670) ALTA MESA SERVICES, LP 106730 BEKEN 1 SPEAKS, SW. (1300) P.E.C.I. OPERATORS, INC. 071655 BELICEK 1 CAMPBELL CREEK (9300) MASCOT OIL COMPANY 213441 BELICEK 2 CAMPBELL CREEK (9300) MASCOT OIL COMPANY 250553 BELICEK 3 CAMPBELL CREEK (9300) MASCOT OIL COMPANY 237634 BELITZ 1 BELITZ (9000 WILCOX) LRE OPERATING, LLC 207991 BELITZ, HENRY 1 BELITZ (9000 WILCOX) BETTIS, BOYLE & STOVALL 125162 BELL, W. T. GAS UNIT 2 JENNIE BELL (WILCOX 11500) HILCORP ENERGY COMPANY 205709 BELL, W. T. GAS UNIT 3 JENNIE BELL (WILCOX 11500) HILCORP ENERGY COMPANY 207937 BELL, W. T. GAS UNIT 4 JENNIE BELL (WILCOX 11500) HILCORP ENERGY COMPANY 212472 BELL, W. T. GAS UNIT 5 JENNIE BELL (WILCOX 11500) HILCORP ENERGY COMPANY 216697 BELL, W. T. GAS UNIT 6 JENNIE BELL (WILCOX 11500) HILCORP ENERGY COMPANY 216418 BELL, W. T. GAS UNIT 7 JENNIE BELL (WILCOX 11500) HILCORP ENERGY COMPANY 219810 BELL, W. T. GAS UNIT 8 JENNIE BELL (WILCOX 11500) HILCORP ENERGY COMPANY 221829 BENGTSON 1 BONNIE VIEW (3300) KLOTZMAN, M. S. EXPLORATION CO. 207756 BENHAM GAS UNIT A 1 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 205681 BENHAM GAS UNIT A 2 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 212328 BENHAM, ERNA P. GAS UNIT 1 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 069020 BENHAM, ERNA P. GAS UNIT 3 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 200147 BENHAM, ERNA P. GAS UNIT 5 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 212330 BENHAM, ERNA P. GU 2 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 198383 BENNER 5 WILDCAT FIELDWOOD ONSHORE LLC 224353 BENNER, WILLIAM 1 PROVIDENT CITY (SOUTH YEGUA K) FIELDWOOD ONSHORE LLC 151107 BENNER, WM. 1 PROVIDENT CITY (WILCOX 9,000) FIELDWOOD ONSHORE LLC 003833 BENNER, WM. 4 PROVIDENT CITY (WILCOX B) FIELDWOOD ONSHORE LLC 192568 BENNETT 2 LA SALLE (6300) MAMEROW ENERGY CORP 226799 BENNETT 3 LA SALLE (6550) MAMEROW ENERGY CORP 238234 BENNETT 4 LA SALLE (6310) MAMEROW ENERGY CORP 244760 BENNETT 5 LA SALLE (6600) MAMEROW ENERGY CORP 249354 BENNETT STATE 1 MIKESKA (10280) VT VISTATEX ENERGY LLC 111599 BENNETT STATE 5 MIKESKA (10500) VT VISTATEX ENERGY LLC 126558 BENNETT STATE GAS UNIT 2 MIKESKA (10500) VT VISTATEX ENERGY LLC 112998 BENNETT STATE GAS UNIT 3 MIKESKA (10500) VT VISTATEX ENERGY LLC 116557 BENNETT-STATE G.U. 4 MIKESKA (YEGUA 4990) VT VISTATEX ENERGY LLC 136001 BENNETT, ET AL 1 LA SALLE (7150) MAMEROW ENERGY CORP 221874 BENNETT, ET AL 6 LA SALLE (6530) MAMEROW ENERGY CORP 251098 BENNETT, ET AL 7 LA SALLE, NE. (6500) MAMEROW ENERGY CORP 257329


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BENNETT, ET AL 8 LA SALLE, N. (6300) MAMEROW ENERGY CORP 258714 BENNETT, J. M. "R" 2 WEST RANCH (WARD) CONS ASSET MGMT SVCS E&P OP, LLC 205829 BENNETT, L.L. ET AL GAS UNIT 1 LIMES (WILCOX 9900) OXY USA INC. 100334 BENNETT, W. H. 2 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 121539 BENNETT, W. H. 4 HEYSER (4400) MCGOWAN WORKING PARTNERS, INC. 058370 BENNETT, W. H. 6 HEYSER (5400 #2) FREDCO 071445 BENNETT, W. H. 7 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 122643 BENNETT, W. H. 9 HEYSER (5400 #3) MCGOWAN WORKING PARTNERS, INC. 061285 BENNETT, W. H. 11 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 121223 BENNETT, W. H. 16 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 051674 BENNETT, W. H. 17 HEYSER (6300) FREDCO 159365 BENNETT, W. H. 20 HEYSER (4400) MCGOWAN WORKING PARTNERS, INC. 057105 BENNETT, W. H. A 2 HEYSER (8300) MCGOWAN WORKING PARTNERS, INC. 154262 BENNETT, W. H. (PF) 1 HEYSER (5400 #2) FREDCO 090798 BENNETT, W. H. (PF) 1 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 089490 BENNETT, W.H. 8 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 124198 BERGER 1 MAETZE (2600) EMERALD OIL & GAS LC 099940 BERRY 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268096 BERTHA ANDERSON GAS UNIT 1R HALLETTSVILLE, SOUTH (ANDERSON) CAPITAL STAR OIL & GAS, INC. 071799 BESSIE HACKNEY UNIT 1 SPEARY (ROEDER 9100) FINLEY RESOURCES, INC. 233673 BETHKE 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 216449 BETHKE 1 MARSHALL (MIDDLE WILCOX) UNION GAS OPERATING COMPANY 249063 BETHKE 2 MARSHALL (MIDDLE WILCOX) UNION GAS OPERATING COMPANY 266666 BETHKE ROUDON GAS UNIT 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 247279 BETHKE, PAUL 2 KAREN BEAUCHAMP (2300) PARAMONT, INC. 058624 BETHKE, PAUL 3 KAREN BEAUCHAMP (2100) PARAMONT, INC. 002278 BETHKE, PAUL 9 KAREN BEAUCHAMP (2100) PARAMONT, INC. 085596 BETTGE 1 BRANDT (WILCOX DEEP) MAGNUM PRODUCING, LP 200525 BETTY KENNEDY UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268756 BETTY KENNEDY UNIT A 1MW SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266485 BETTY KENNEDY UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268789 BETTY KENNEDY UNIT A 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 267401 BETTY KENNEDY UNIT A 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 269507 BETTY KENNEDY UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268797 BETTY KENNEDY UNIT B 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272412 BEV-ZAN 1 CABEZA CREEK, SOUTH (M. W. 8300) MOSBACHER ENERGY COMPANY 207246 BEV-ZAN 2 CABEZA CREEK, S. (RECKLAW 7700) MOSBACHER ENERGY COMPANY 229791 BEYNON 4381 HYSAW (EDWARDS) HAWTHORN ENERGY PARTNERS, LLC 242927 BIEMER 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 266117 BIG EASY 1 WEESATCHE, NE. (HOLT FB A) KEBO OIL & GAS, INC. 191774 BIG OAK A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 269044 BIG OAK B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268920 BIG TWELVE 1 BIG 12 (YEGUA AY-3) SUE-ANN OPERATING, L.C. 198400 BILLO, ED. 1 FANNIN, NORTH (3600) PARSONS & NORMAN 001563 BING 1 SPEAKS, S.W. (12010) MAGNUM PRODUCING, LP 133437 BIRD 1 OAKVILLE (WILCOX CONS.) MILAGRO EXPLORATION, LLC 235003 BISSETT, CLARK 2 HOCKLEY (4630) BURTON, V.C. OIL & GAS, INC. 104814 BITTERLY 1 T MISSION VALLEY, N (FRIO 3000) PAMETA OIL COMPANY 112990 BITTERLY 1C MISSION VALLEY, NORTH(FRIO 2800) BOBCAT OPERATING 087841 BITTERLY 2 MISSION VALLEY, N (FRIO 3000) BOBCAT OPERATING 116611 BKL GAS UNIT 1 HOLLY, WEST (2000) MAGNUM PRODUCING, LP 270481


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BLACKBURN 2 BERCLAIR, SOUTH (2300) DEWBRE PETROLEUM CORPORATION 220410 BLACKBURN 3 WILDCAT DEWBRE PETROLEUM CORPORATION 206481 BLACKBURN 4 BERCLAIR, SOUTH (2300) DEWBRE PETROLEUM CORPORATION 200799 BLACKBURN 47 BERCLAIR (VICKSBURG, SOUTHEAST) HAMMAN OIL & REFINING COMPANY 164208 BLACKBURN RANCH-NANCI 1 BERCLAIR, SOUTH (2300) NORTH AMERICAN NATURAL CRUDE IN. 148769 BLACKBURN, J. L. TRUST 1 BERCLAIR, S. (2140) CORENERGY OPERATING GROUP, LLC 196529 BLACKBURN, L. K. 3 WILDCAT CORENERGY OPERATING GROUP, LLC 177178 BLACKBURN, L. K. 5 BERCLAIR (1620) CORENERGY OPERATING GROUP, LLC 196530 BLACKJACK UNIT E 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 274533 BLACKWELL 1H KAWITT (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 161807 BLACKWELL 2 KAWITT (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 169128 BLACKWELL A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 263809 BLACKWELL GAS UNIT 1 D 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 268541 BLACKWELL GAS UNIT 1 D 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 268219 BLACKWELL GAS UNIT 2 1 KAWITT (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 250715 BLACKWELL GAS UNIT 2 2 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 265486 BLACKWELL GAS UNIT 2 C 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 268459 BLACKWELL GAS UNIT 2 C 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 272516 BLACKWELL GAS UNIT 2 C 3H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 274904 BLACKWELL TRUST GAS UNIT 1 FRIAR RANCH, S. (CONSOLIDATED) HILCORP ENERGY COMPANY 212281 BLACKWELL TRUST GAS UNIT 2 FRIAR RANCH, S. (CONSOLIDATED) HILCORP ENERGY COMPANY 217905 BLACKWELL TRUST GAS UNIT 3 FRIAR RANCH, S. (CONSOLIDATED) HILCORP ENERGY COMPANY 223762 BLACKWELL TRUST GAS UNIT 4 FRIAR RANCH, S. (CONSOLIDATED) HILCORP ENERGY COMPANY 226817 BLACKWELL TRUST GAS UNIT 5 FRIAR RANCH, S. (CONSOLIDATED) HILCORP ENERGY COMPANY 231207 BLACKWELL, W. A. GAS UNIT 1 A 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 266169 BLAIN, LOVEL A III 2 GUN POINT (WILCOX LOWER, GRAY) URBAN OIL & GAS GROUP, LLC 119308 BLAIN, LOVEL A. III 2 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 260758 BLANCA SHAY 1 GAFFNEY (5540, N W) CHARRO OPERATING, L.L.C. 245564 BLANCO 1 MARSHALL (MIDDLE WILCOX) HURD ENTERPRISES, LTD. 218933 BLOCK 70 UNIT WN 1 U CLAYTON (SLICK 6450) GREATER SOONER HOLDINGS, INC. 035856 BLOCK 75 UNIT 1 CLAYTON (BLOCK 85 SD) SAGE ENERGY COMPANY 099252 BLOCK 75 UNIT 2 CLAYTON (WILCOX 7360) SAGE ENERGY COMPANY 263461 BLOCK 75 UNIT 3 CLAYTON (SLICK 6500) SAGE ENERGY COMPANY 198181 BLOCK 75 UNIT 3-L CLAYTON (MASSIVE) SAGE ENERGY COMPANY 171548 BLOCK 75 UNIT 3-U CLAYTON (BLOCK 75 SD) SAGE ENERGY COMPANY 137182 BLOCK 75 UNIT 4 CLAYTON (WILCOX 7360) SAGE ENERGY COMPANY 240043 BLOCK 76 UNIT 2 CLAYTON (BLOCK 72 SD.) HEDRICK PRODUCTION INC. 203533 BLOCK 76 UNIT 2 CLAYTON (WILCOX 7360) HEDRICK PRODUCTION INC. 130278 BLOCK 76 UNIT 3 CLAYTON (WILCOX 7360) HEDRICK PRODUCTION INC. 133397 BLOCK 85 UNIT 3 CLAYTON (BLOCK 85 SD) HEDRICK PRODUCTION INC. 169313 BLOCK 85 UNIT 4 CLAYTON (WILCOX 7360) HEDRICK PRODUCTION INC. 139134 BLOCK 86 UNIT 2 CLAYTON (MASSIVE) HEDRICK PRODUCTION INC. 191444 BLOCK 86 UNIT 2 L CLAYTON (BLOCK 86 SD) HEDRICK PRODUCTION INC. 057692 BLOCK 86 UNIT 2-U CLAYTON (BLOCK 85 SD) HEDRICK PRODUCTION INC. 183237 BLOCK 86 UNIT 4 CLAYTON (BLOCK 75 SD) HEDRICK PRODUCTION INC. 195692 BLOCK 86 UNIT 4 CLAYTON (BLOCK 85 SD) HEDRICK PRODUCTION INC. 144903 BLOCK 86 UNIT #3 3 CLAYTON (MASSIVE) HEDRICK PRODUCTION INC. 176647 BLUDAU, L. A. UNIT 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 102953 BLUDAU, L. A. UNIT 2 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 166965 BLUHM GU1 A 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 268540 BLUHM UNIT 2 HIGHLANDER (CARRIZO) BAY ROCK OPERATING COMPANY 188518


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BLUNTZER 1 MELROSE (9500) UNIT PETROLEUM COMPANY 200770 BMB INVESTMENTS 1ST BENBOW (WILCOX 10,000) MAGNUM PRODUCING, LP 272206 BODDEN 1 GEORGE WEST, WEST (10200) KEBO OIL & GAS, INC. 257101 BODDEN FROST GAS UNIT 1 2 L GEORGE WEST, WEST (10200) LRE OPERATING, LLC 100977 BODDEN FROST GAS UNIT 1 2 U GEORGE WEST, WEST (9500) LRE OPERATING, LLC 100629 BODDEN FROST GAS UNIT 1 3 L FANT (WILCOX 10200) LRE OPERATING, LLC 103176 BODDEN FROST GAS UNIT 1 3 U FANT (WILCOX 9500) LRE OPERATING, LLC 103175 BODDEN-FROST GAS UNIT 1 4 FANT (WILCOX 9500) LRE OPERATING, LLC 251488 BODDEN-FROST GU 1 4 FANT (WILCOX 10000) LRE OPERATING, LLC 166869 BOEHL 2 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 238215 BOENIG 1 LA ROSA, NORTH (5700) PATRICO OIL CO. 002465 BOENING UNIT 1H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 271613 BOENING UNIT 2H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 276331 BOENING UNIT A 1H EAGLEVILLE (EAGLE FORD-2) SABINE OIL & GAS CORPORATION 269263 BOERM, MINNIE 1 SPEARY (WILCOX 9500) OKIE OPERATING COMPANY, LTD. 022963 BOLDT 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 266960 BOLDT 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 266363 BOLDT 01 03H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 276615 BOLDT 01 04H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 276234 BOLDT 01 05H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 276233 BOLDT 01 06H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 276347 BOLDT 01 07H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 276228 BOLDT 01 08H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 276348 BOLDT, AMELIA 1 T HOLLY, NW. (3050) MORRISON, FRANK A. 034281 BOLDT, E. D. 1 HOLLY, WEST (VICKSBURG) WILSON HYDROCARBON INC. 089009 BOLDT, F. T., UNIT 1 YORKTOWN (7100) KARNEI, HARLAN OIL & GAS CO. 086652 BOLLAND 1 BOLLAND RANCH, S. (PETTUS 4590) CORENERGY OPERATING GROUP, LLC 171222 BOLLAND RANCH 2 BOLLAND RANCH, S. (PETTUS 4590) TEPCO ENGINEERING 095248 BOLLAND, ERNEST 1 BOLLAND RANCH, S. (PETTUS 4590) TEPCO ENGINEERING 108050 BOLTING, GEORGIA FAYE ET AL 1 SPEARY, EAST (WILCOX 9800) BOYD & MCWILLIAMS ENERGY GROUP 109550 BONILLA 1 MIKESKA (MASSIVE WILCOX) MILAGRO EXPLORATION, LLC 177149 BONNER, R. R. 1 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 089896 BONNER, R. R. 3 HEYSER (4400) MCGOWAN WORKING PARTNERS, INC. 002101 BONNER, R. R. 6 HEYSER (4400) MCGOWAN WORKING PARTNERS, INC. 057551 BONNER, R. R. 7 HEYSER (GRETA STRINGER) MCGOWAN WORKING PARTNERS, INC. 052083 BONNER, R. R. (PF) 1 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 091316 BONNOT, LOUISE 1 MAURBRO (MARGINULINA 5100) SUE-ANN OPERATING, L.C. 138303 BONORDEN 1 PROVIDENT CITY (FRIO 3100) KWS OIL & GAS, LLC 211771 BONORDEN GAS UNIT 2 HALLETTSVILLE, E.(MIDDLE WILCOX) BOPCO, L.P. 194175 BONORDEN GAS UNIT 3 L HALLETTSVILLE, E.(MIDDLE WILCOX) BOPCO, L.P. 204254 BONORDEN GAS UNIT 3-U HALLETTSVILLE, E.(MIDDLE WILCOX) BOPCO, L.P. 170621 BONORDEN GAS UNIT 4 HALLETTSVILLE, E.(MIDDLE WILCOX) BOPCO, L.P. 224488 BONORDEN GAS UNIT 5 HALLETTSVILLE, E.(MIDDLE WILCOX) BOPCO, L.P. 248812 BONORDEN GAS UNIT 6 HALLETTSVILLE, E.(MIDDLE WILCOX) BOPCO, L.P. 231756 BONORDEN-CLARK GAS UNIT 1 PROVIDENT CITY (WILCOX 8,600) MARWELL PETROLEUM LTD PARTNRSHIP 003803 BOOK 1 WILDCAT TRI-C RESOURCES, LLC 220910 BOONE SWD 1 MONTEOLA (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 067270 BOOTH, Z. A. 3 A-B-R (FRIO 2800) ABEL, M.D. CO. 137072 BOOTHE 1 BRUSHY CREEK, S. (WILCOX 13900) CRIMSON EXPLORATION OPER., INC. 181299 BOOTHE GAS UNIT 1 SAWFISH (EDWARDS) PIONEER NATURAL RES. USA, INC. 224292 BOOTHE GAS UNIT NO 1 2 SAWFISH (EDWARDS) PIONEER NATURAL RES. USA, INC. 229964


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BOOTHE GAS UNIT NO 1 3 SAWFISH (EDWARDS) PIONEER NATURAL RES. USA, INC. 231718 BOOTHE UNIT 1 RAY (VICKSBURG-HOCKLEY) SYDSON ENERGY, INC. 257633 BORCHERS 1 BORCHERS (5700 YEGUA) H & P EXPLORATION CO. 273424 BORCHERS 4 BORCHERS (1370) DOUBLE PLAY OIL & GAS, INC 102632 BORCHERS 02 BORCHERS (5700 YEGUA) H & P EXPLORATION CO. 269114 BORCHERS 13 ESPERANZA (3150) RAMTEX ENERGY LLC 217398 BORCHERS 15 BORCHERS (2850) VAQUERO OPERATING 143102 BORCHERS , WILLIAM 11 BORCHERS, SOUTH (1300) VAQUERO OPERATING 140967 BORCHERS "B" 3 MORALES, NORTH (1910) MAGNUM PRODUCING, LP 227768 BORCHERS A114 1 THE RAPTURE (DELTA) HUNT OIL COMPANY 232468 BORCHERS A19 1 THE RAPTURE (DELTA) HUNT OIL COMPANY 218851 BORCHERS ESTATE 1 BORCHERS, SOUTH (1300) DOUBLE PLAY OIL & GAS, INC 078981 BORCHERS ESTATE 2 BORCHERS (2100) DOUBLE PLAY OIL & GAS, INC 227972 BORCHERS ESTATE 2 BORCHERS (2200) DOUBLE PLAY OIL & GAS, INC 131569 BORCHERS ESTATE 4B BORCHERS (2130) DOUBLE PLAY OIL & GAS, INC 226811 BORCHERS ESTATE 13 BORCHERS (1370) DOUBLE PLAY OIL & GAS, INC 105820 BORCHERS ESTATE 15 BORCHERS (2100) DOUBLE PLAY OIL & GAS, INC 241168 BORCHERS ESTATE 16 BORCHERS (3070) DOUBLE PLAY OIL & GAS, INC 144646 BORCHERS ESTATE 17 BORCHERS (3250) DOUBLE PLAY OIL & GAS, INC 167856 BORCHERS F 14 BORCHERS, EAST (3650) CAMOIL, INC. 200164 BORCHERS, O. R. -A- 2 MORALES, NORTH (1250) BRINKERHOFF OIL COMPANY 096493 BORCHERS, VIVIAN 2 BENBOW (LOWER WILCOX A) RAMTEX ENERGY LLC 132903 BORCHERS, VIVIAN 2 BENBOW (LOWER WILCOX B) RAMTEX ENERGY LLC 115899 BORCHERS, VIVIAN 4 BENBOW (LOWER WILCOX A) RAMTEX ENERGY LLC 118196 BORCHERS, VIVIAN 5 BENBOW (LOWER WILCOX A) RAMTEX ENERGY LLC 133395 BORCHERS, VIVIAN 10 ESPERANZA (3150) RAMTEX ENERGY LLC 212772 BORCHERS, VIVIAN ET AL 6 BENBOW (LOWER WILCOX A) RAMTEX ENERGY LLC 123397 BORCHERS, VIVIAN ET AL 8 BENBOW (LOWER WILCOX A) RAMTEX ENERGY LLC 128596 BORCHERS, VIVIAN ETAL UNIT 2 7 BENBOW (LOWER WILCOX B) RAMTEX ENERGY LLC 126099 BORCHERS, VIVIAN UNIT ET AL 1 BENBOW (LOWER WILCOX A) RAMTEX ENERGY LLC 114619 BORCHERS, WILLIAM 1 BORCHERS (5700 YEGUA) PETRA OLEUM CORP. 223451 BORCHERS, WILLIAM 1 BORCHERS (8500) PETRA OLEUM CORP. 194117 BORCHERS, WILLIAM 1 BORCHERS, EAST (1250) VAQUERO OPERATING 129016 BORCHERS, WILLIAM 3 BORCHERS (3250) VAQUERO OPERATING 055983 BORCHERS, WILLIAM 4 BORCHERS, EAST (1250) VAQUERO OPERATING 092847 BORCHERS, WILLIAM 6 C BORCHERS (1900) VAQUERO OPERATING 061353 BORCHERS, WILLIAM 6 T BORCHERS (FRIO CATAHOULA) VAQUERO OPERATING 056006 BORCHERS, WILLIAM 9 BORCHERS (3100) PETRA OLEUM CORP. 164701 BORCHERS, WILLIAM 14 BORCHERS (1370) PETRA OLEUM CORP. 164699 BORCHERS, WILLIAM 14 BORCHERS (1500) VAQUERO OPERATING 135593 BORCHERS, WILLIAM 15 BORCHERS (2130) VAQUERO OPERATING 148640 BORCHERS, WILLIAM 15 BORCHERS, SOUTH (1900) VAQUERO OPERATING 231275 BORCHERS, WILLIAM 15 C BORCHERS (1500) VAQUERO OPERATING 070406 BORCHERS, WILLIAM 17 BORCHERS (725) WHITE MARLIN OPERATING CO, LLC 141341 BORCHERS, WILLIAM 17 BORCHERS (2470) PETRA OLEUM CORP. 062812 BORCHERS, WILLIAM 21 BORCHERS, SOUTH (1300) VAQUERO OPERATING 129027 BORCHERS, WILLIAM 27 BORCHERS (870) VAQUERO OPERATING 231808 BORCHERS, WILLIAM 27 BORCHERS, NORTH (650) SABCO OPERATING COMPANY, LLC 273880 BORCHERS, WILLIAM 29 BORCHERS (870) VAQUERO OPERATING 149545 BORCHERS, WILLIAM 29 BORCHERS, NORTH (650) VAQUERO OPERATING 232804 BORCHERS, WILLIAM 30 BORCHERS (3550) VAQUERO OPERATING 273881


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BORCHERS, WILLIAM 30 BORCHERS (3950) VAQUERO OPERATING 130922 BORCHERS, WILLIAM 31 BORCHERS (3350) VAQUERO OPERATING 273879 BORCHERS, WILLIAM 31 BORCHERS (3600) VAQUERO OPERATING 227333 BORCHERS, WILLIAM 32 BORCHERS (2850) VAQUERO OPERATING 273878 BORCHERS, WILLIAM 32 BORCHERS (3950) VAQUERO OPERATING 231192 BORCHERS, WILLIAM -B- 3 BORCHERS (3800) DOUBLE PLAY OIL & GAS, INC 254697 BORCHERS, WILLIAM -B- 5 BORCHERS (4160) VAQUERO OPERATING 256309 BORCHERS, WILLIAM A. 10 WILDCAT VAQUERO OPERATING 171208 BORCHERS, WILLIAM-A 10 BORCHERS (1370) VAQUERO OPERATING 177981 BORCHERS, WILLIAMS 13 BORCHERS (870) VAQUERO OPERATING 129012 BORCHERS, WM. 3 MORALES, NORTH (WILCOX -H-) PETRA OLEUM CORP. 003495 BORCHERS, WM. 5 BORCHERS, NORTH (650) VAQUERO OPERATING 139533 BORDOVSKY A7 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 247044 BORDOVSKY UNIT 1 PANNA MARIA (CARRIZO) PROPERTY DEVELOPMENT GROUP, INC. 208024 BORN A 1H SUGARKANE (EAGLE FORD) BHP BILLITON PET(TXLA OP) CO 260391 BORROUM "B" 1 PLUMMER-WILCOX (8500) SUN EXPLORATION, INC. 105767 BOSWELL 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268947 BOSWELL 02 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269573 BOWER 1 CHARCO, SE. (MASSIVE LOWER 8750) RAMTEX ENERGY LLC 262129 BOWERS, RUTH MCLEAN/FROST BANK 1 WILDCAT CORDELE DEVELOPMENT CORPORATION 174369 BOWMAN 1 MCCASKILL (LOWER WILCOX) ATASCA RESOURCES, INC. 199915 BOYCE, C.W. 3 BURNELL (2870) WELDER EXPLORATION & PROD., INC. 241969 BOYCE, W. W. 11 BOYCE (SLICK) NELSON, JAMES L. 195358 BOYCE, W. W. 14 BOYCE, SOUTH (PETTUS) NELSON, JAMES L. 092849 BOYD FAMILY TRUST 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 264351 BOYD FAMILY TRUST 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 270126 BOYD FAMILY TRUST 01 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269407 BOYD FAMILY TRUST 01 04H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 270127 BOYD, ALEX 1 SHERIFF (F-1) FORMATION RESOURCES LLC 134156 BOYD, ALEX 2 SHERIFF (F-3) FORMATION RESOURCES LLC 134157 BOYD, ALEX 3 L SHERIFF (F-2) FORMATION RESOURCES LLC 033747 BOYD, ALEX 3 U SHERIFF (F-1) FORMATION RESOURCES LLC 034229 BOYD, C. H. 5 SHERIFF (F-3) FORMATION RESOURCES LLC 033749 BOYD, CHARLIE H. 1 SHERIFF (F-4) FORMATION RESOURCES LLC 231505 BOYD, FRANK 1 SHERIFF (F-4) FORMATION RESOURCES LLC 183155 BOYD, FRANK 2 SHERIFF (CONSOLIDATED) FORMATION RESOURCES LLC 171260 BOYD, H. C. 1 SHERIFF (F-4) FORMATION RESOURCES LLC 038893 BOYD, HENRY C. 3 SHERIFF (CONSOLIDATED) FORMATION RESOURCES LLC 151661 BOYSEN A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 265069 BOYSEN B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 263776 BOZART UNIT 1 NURSERY, SW. (3500) BOLCIK, ROBERT 081122 BOZKA 1 BOZKA (1600) FIRSTRIKE ENERGY CORPORATION 262124 BRADFORD 1 BTSA (YEGUA 4594) MAGNUM PRODUCING, LP 258014 BRAMAN -A- 1 WILDCAT T-C OIL COMPANY, LLC 265197 BRAMAN -A- 2 R BRAMAN (8700) T-C OIL COMPANY, LLC 269663 BRANCH, MAGGIE 26 H HARMON (STRAY 6500) KD ENERGY, LLC 057402 BRANCH, MAGGIE 29 GANADO (F- 3-A LOWER) KD ENERGY, LLC 209898 BRANCH, MAGGIE 30 GANADO (4100) KD ENERGY, LLC 134904 BRANDL 1 PLACEDO, EAST (5200) AURORA RESOURCES CORPORATION 163014 BRANDT, G. H. 1 BRANDT (YEGUA 4700) ADAMS, JOE D., TRUSTEE 084304 BRANDT, G. H. 3 BRANDT (YEGUA 4700) ADAMS, JOE D., TRUSTEE 072067


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BRANDT, GEORGE H. JR. 1 BRANDT ALTA MESA SERVICES, LP 177173 BRASHEAR ET AL 3 MINERAL, N. (800) EXPANDING EXPLORATION INC. 084040 BRASHEAR ET AL UNIT 1 MINERAL, NORTH (9750) WOFFORD, C. J. 124093 BREEDEN 1-L WEESATCHE, NE. (HOLT FB A) RAMTEX ENERGY LLC 164554 BREEDEN 1-U WEESATCHE, NE. (WILCOX 10,030) RAMTEX ENERGY LLC 164552 BREEDEN, P. H. 1 BREEDEN (4600 YEGUA) SURE FLOW OIL & GAS, INC. 001015 BRICE UNIT 2 WORD, N. (7550) BOPCO, L.P. 158427 BRINKOETER 1Q BURNELL (BRINKOETER) BRITANCO, L.L.C. 139304 BRINKOETER 10 BURNELL, SOUTH (1000) BRITANCO, L.L.C. 129956 BRINKOETER, H. C. 1 YOWARD, SW. (SLICK) ROCK RESOURCES, INC. 256869 BRINKOETER, W. H. Q 2 C BURNELL (SLICK) BRITANCO, L.L.C. 049051 BROOKE 2 COOK, EAST (ROEDER SAND) A & D EXPLORATION COMPANY 164465 BROOKING-SEALE UNIT 1 SWAN LAKE (6135) ACOCK/ANAQUA OPERATING CO., LP 191741 BROOKING, G. T. 45 SWAN LAKE (7100) ACOCK/ANAQUA OPERATING CO., LP 240758 BROOKING, G. T. 46 SWAN LAKE (7850) ACOCK/ANAQUA OPERATING CO., LP 257925 BROOKING, G.T. 37 SWAN LAKE (6850) ACOCK/ANAQUA OPERATING CO., LP 138635 BROOKING, GARLAND T. 2 BROOKING (8650) UNOSO OPERATING COMPANY L.L.C. 091214 BROOKING, M. T. #2 2 SOUTHERN COMFORT (FRIO) CORUM PRODUCTION COMPANY 269676 BROOKING, M.M. 1 SOUTHERN COMFORT (FRIO) CORUM PRODUCTION COMPANY 127084 BROOKING, M.M. 2 SOUTHERN COMFORT (FRIO) CORUM PRODUCTION COMPANY 135003 BROOKS TRUST 2 CADIZ (QUEEN CITY) DIRKS PETROLEUM COMPANY 251222 BROOKS TRUST NO. 2 3 CADIZ (QUEEN CITY) DIRKS PETROLEUM COMPANY 242784 BROOKS TRUST NO.2 G.U.#2 2 CADIZ, NORTH (SLICK-WILCOX) DIRKS PETROLEUM COMPANY 181122 BROUGHTON GAS UNIT O/A 1 YORKTOWN (WILCOX 9,900) FAULCONER, VERNON E., INC. 045514 BROWN 1 COLETTO CREEK, S. (3030) KLOTZMAN, M. S. EXPLORATION CO. 185948 BROWN 6 BEEVILLE, W. (HOCKLEY) ENCO EXPLORATION COMPANY 263008 BROWN 12 NORBEE, S.E. (HOCKLEY) ENCO EXPLORATION COMPANY 267866 BROWN GAS UNIT 1 NORBEE (SLICK) WAGNER OIL COMPANY 146734 BROWN GAS UNIT #1 1 L NORBEE (MACKHANK) HYDROCARBON HORIZONS, INC. 035447 BROWN GAS UNIT #1 1 U NORBEE (LULING, 1ST) WAGNER OIL COMPANY 035446 BROWN H 1A NORBEE (3400) ENCO EXPLORATION COMPANY 269248 BROWN H 3 BEEVILLE, W. (HOCKLEY) ENCO EXPLORATION COMPANY 272968 BROWN UNIT 10 NORBEE (GEOLOGIC) ENCO EXPLORATION COMPANY 269243 BROWN, AUSTIN 6 HOLZMARK, E. (10,300) HUGHES, DAN A. COMPANY, L.P. 228044 BROWN, ED 1 HOLZMARK, E. (10,300) HUGHES, DAN A. COMPANY, L.P. 207642 BRUNS 2 FRANKE (YEGUA) B.P. PRODUCTIONS INC. 186638 BRUNS 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 260240 BRUNS 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268521 BRUNS 01 03H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268655 BRUNS 01 04H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268525 BRUNS 01 05H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 274457 BRUNS 01 06H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 274456 BRUNS 01 07H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 271611 BRUNS 01 08H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 274455 BRUSHY CREEK 1 DRY HOLLOW (WILCOX MASSIVE EAST) MILAGRO EXPLORATION, LLC 162212 BRUSHY CREEK GAS UNIT 7 BRUSHY CREEK (YEGUA 5050) KEY ENERGY SERVICES, LLC 107269 BRUSHY CREEK GAS UNIT 8 BRUSHY CREEK (YEGUA 4850) KEY ENERGY SERVICES, LLC 169363 BRUSHY CREEK GAS UNIT 9 BRUSHY CREEK, NORTH (FRIO 2750) KEY ENERGY SERVICES, LLC 172158 BRUSHY CREEK GAS UNIT 11 HOPE (VICKSBURG 3200) BROWN, GEO. R PARTNERSHIP,LP,THE 183346 BRUSHY CREEK GAS UNIT 14 BRUSHY CREEK (FRIO 2900) BROWN, GEO. R PARTNERSHIP,LP,THE 188629 BRUSHY CREEK GAS UNIT 15 HOPE (MIOCENE 2900) BROWN, GEO. R PARTNERSHIP,LP,THE 190693


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BRUSHY CREEK GAS UNIT 17 HOPE (MIOCENE 2700) BROWN, GEO. R PARTNERSHIP,LP,THE 265946 BRUSHY CREEK GAS UNIT 18 BRUSHY CREEK (WILCOX -S-1-11200) BROWN, GEO. R PARTNERSHIP,LP,THE 188920 BRUSHY CREEK GAS UNIT 19 BRUSHY CREEK, NORTH (FRIO 2750) BROWN, GEO. R PARTNERSHIP,LP,THE 209893 BRUSHY CREEK GAS UNIT 21 BRUSHY CREEK (WILCOX -S-1-11200) BROWN, GEO. R PARTNERSHIP,LP,THE 171215 BRUSHY CREEK GAS UNIT 22 HOPE (VICKSBURG 3200) BROWN, GEO. R PARTNERSHIP,LP,THE 254219 BRYSCH 1 LIMES (WILCOX F-2) KEBO OIL & GAS, INC. 254913 BRYSCH 1 PANNA MARIA (EDWARDS) ENERQUEST OPERATING L.L.C. 258318 BRYSCH GAS UNIT 1H WARMSLEY, S. (10550) WINN EXPLORATION CO., INC. 255666 BRYSCH GAS UNIT 2 1 GEORGE WEST, WEST (10200) LRE OPERATING, LLC 113782 BRYSCH GAS UNIT 2 2 FANT (WILCOX 10000) LRE OPERATING, LLC 164061 BRYSCH GAS UNIT 2 3 L GEORGE WEST, WEST (10200) LRE OPERATING, LLC 104467 BRYSCH GAS UNIT 2 3 U GEORGE WEST, WEST (9500) LRE OPERATING, LLC 104096 BRYSCH, ALFRED 1 GEORGE WEST, WEST (8500) LRE OPERATING, LLC 177942 BU ANDERSON-PRICHARD-TENBERG 2 CAUSEY (WILCOX 8700) TRINITY RIVER ENERGY OPER, LLC 245943 BU TOM SLICK 3 WILDCAT TRINITY RIVER ENERGY OPER, LLC 210451 BUCH GAS UNIT 1 WARMSLEY (VAUGHN) WINN EXPLORATION CO., INC. 238238 BUCHHORN 1H SUGARKANE (EAGLE FORD) SABINE OIL & GAS CORPORATION 272594 BUCHHORN 2H SUGARKANE (EAGLE FORD) SABINE OIL & GAS CORPORATION 276115 BUCHHORN 3H SUGARKANE (EAGLE FORD) SABINE OIL & GAS CORPORATION 274670 BUCHHORN B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264147 BUCHHORN GAS UNIT 1H WARMSLEY, S. (10550) WINN EXPLORATION CO., INC. 250898 BUCKERT 2 A-B-R, NE. (2150) L & L INVESTMENTS 078976 BUCKERT, T. A. 1 A-B-R, NE. (WILCOX 2ND, MASS.) L & L INVESTMENTS 074843 BUCKNER FOUNDATION 1 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 219921 BUEHRIG 5 L COTTONWOOD CREEK, S. (5300) THUNDERBIRD ENERGY, INC. 084738 BUES, HENRY GAS UNIT 2 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 129736 BUES, HENRY GAS UNIT 14 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 222985 BUESING, WILLIE ET AL 1 CHRISTMAS, DEEP (WILCOX 10800) ELAND ENERGY, INC. 053901 BUHLER 2 TELFERNER (4600) HOLLIMON OIL CORPORATION 180964 BUHLER 33 PLACEDO (5720) PEGASUS OPERATING, INC. 154573 BUHLER "A" 1 IDA WEITZ (3800) HOLLIMON OIL CORPORATION 230789 BUHLER "B" 1 TELFERNER, NORTH (2050) HOLLIMON OIL CORPORATION 242928 BUJNOCH 2 VIENNA (FRIO 3300) SOUNDLOGIC PROD. & EXPLOR., LLC 171752 BUJNOCH-HENDERSON 1 MONT (WILCOX 10,900) TRIO CONSULTING & MANAGEMENT,LLC 267873 BULL REDFISH UNIT 1 PANTHER REEF (FRIO G-1) MAGNUM OPERATING, LLC 266900 BULL REDFISH UNIT 2 PANTHER REEF, SW. (FRIO G-1) MAGNUM OPERATING, LLC 274876 BUNCH 2 BLANCONIA (3650) ANDERSON OIL LTD. 269202 BUNDICK 2 SARCO CREEK (2800) T-C OIL COMPANY, LLC 200172 BUNDICK 2 SARCO CREEK (4500) T-C OIL COMPANY, LLC 197477 BURDITT, ALLEN L. 5 LA WARD, NORTH (4700) ABACO OPERATING, LLC 184658 BURDITT, ALLEN L. 7 LA WARD, NORTH (5530) ABACO OPERATING, LLC 038095 BURDITT, LOUISE 2 WILDCAT FORMATION RESOURCES LLC 151425 BURES 1 GANADO (FRIO 4-D) VIPER S.W.D., LLC 250099 BURES 1 MUSTANG CREEK, EAST (6150) VIPER S.W.D., LLC 164049 BURGESS UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266270 BURLINGTON FEE 301 1 CHAPA, WEST (LULING) TIDEWATER MINERALS CORPORATION 252185 BURNS 1 CLAY WEST (WILCOX 11200) CIMAREX ENERGY CO. OF COLORADO 064667 BURNS GAS UNIT 2 CLAY WEST (WILCOX LOWER) CIMAREX ENERGY CO. OF COLORADO 158332 BURNS GAS UNIT NO 1 1 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 236152 BURNS GAS UNIT NO 1 2 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 235538 BURNS GAS UNIT NO 1 3 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 237044


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ BURNS 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268180 BURNS, FINDLEY H. 1C WOOD HIGH (5300) DRIVER OIL & GAS, INC. 075706 BURNS, KITTY 1A TREY PET. I OMEGA ENERGY, LLC 119777 BURRIS 54 1 HYSAW (EDWARDS) HAWTHORN ENERGY PARTNERS, LLC 262993 BURROWS GAS UNIT 1 OCONNOR RANCH (FRIO CONS.) AMERICO ENERGY RESOURCES, LLC 195992 BURTON, BILLY JOE 1 ATKINSON (KLINGEMAN) LODESTAR PACIFIC CORPORATION 076580 BUTLER A-304 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 259222 BUTLER UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 263744 BUTLER UNIT C 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268773 BUTLER UNIT D 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 265330 BUTSCHEK 'A' 1 WORD (8900) TRIO CONSULTING & MANAGEMENT,LLC 234086 BUZZARD VISTA A 1H SUGARKANE (EAGLE FORD) BHP BILLITON PET(TXLA OP) CO 266688 BYERLY A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266811 BYERS 1 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 232137 BYLES, J. C. "A" ET AL 1 CAESAR, SOUTH (MASSIVE) STONE TRUCKING COMPANY, INC. 180993 C. L. HERMES GU 1 STINGRAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 221830 C.E. HEARD "B" 20 HEARD RANCH (FRIO Z) MILAGRO EXPLORATION, LLC 230418 C.E. HEARD "B" 28 HEARD RANCH (4400) MILAGRO EXPLORATION, LLC 230335 C.E. HEARD "B" 34 HEARD RANCH (4400) MILAGRO EXPLORATION, LLC 230518 CALLAGHAN 1 WILDCAT WELDER EXPLORATION & PROD., INC. 219742 CALLAWAY 2 MORALES (2280) TIDEWATER MINERALS CORPORATION 225631 CALLAWAY #1 1 MORALES (2700) TIDEWATER MINERALS CORPORATION 179373 CALLAWAY #2 1 MORALES (2710) CHAPARRAL ENERGY, L.L.C. 179374 CAMBER GAS UNIT 1 BIRDIE (WILCOX 11,750) WHITING OIL AND GAS CORPORATION 239431 CAMERON 1 CAMERON-ALLEN (FRIO 4000) WALLIS ENERGY, INC. 125765 CAMPBELL 2 MORALES (2540) TIDEWATER MINERALS CORPORATION 238942 CANERDAY 1 EL TORO (6300) SHANLEY OIL COMPANY 099406 CANERDAY, E. 2 TEXANA (6320) W.A.M. ENERGY 142505 CANFIELD RANCH 1 GEORGE WEST, EAST (QUEEN CITY) CONTINENTAL OPERATING CO. 262232 CARL 1 YOUGEEN, SOUTH (3550) SPINDLETOP OIL & GAS COMPANY 067143 CARLISLE, R. E. 1 FELIX (5500) COLOMA OIL & GAS CORP. 001574 CARLSON DANFORTH GAS UNIT 1 PAWNEE (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 231352 CARLYON GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 258598 CARMICHAEL 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 201843 CARMICHAEL 1 MARSHALL, EAST (WILCOX 9410) HILCORP ENERGY COMPANY 106939 CARMICHAEL 2 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 207929 CARMICHAEL 2 MARSHALL, EAST (YEGUA 5523) HILCORP ENERGY COMPANY 126215 CARMICHAEL 3 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 207936 CARMICHAEL 4 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 214433 CARMICHAEL 5 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 215767 CARMICHAEL 6 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 216717 CARMICHAEL A 1 WILDCAT HILCORP ENERGY COMPANY 228644 CARMICHAEL A 2 MARSHALL, EAST (YEGUA 5300) HILCORP ENERGY COMPANY 134979 CAROTHERS 1 COLOGNE (4300) AMPAK OIL COMPANY 180844 CARPENTER 1 NURSERY (YEGUA 5700) CML EXPLORATION, LLC 234357 CARPENTER 1 THEIS, SOUTH(SLICK FIRST) B.P. PRODUCTIONS INC. 210769 CARPENTER 2 THEIS, SOUTH(SLICK FIRST) B.P. PRODUCTIONS INC. 218491 CARPENTER 4 HEALEY (YEGUA 4824) ENCO EXPLORATION COMPANY 270936 CARPENTER, J. R. 1 SINGLETON (3950) CHESNUTT OIL & GAS, INC. 092153 CARROLL 1 BALFOUR (YEGUA 4800) B D PRODUCTION CO., INC. 233396 CARROLL RETZLOFF 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267639


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ CARROLL RETZLOFF 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268800 CARROLL-MCMANUS 4 BRUSHY CREEK (WILCOX -S-1-11200) CRIMSON EXPLORATION OPER., INC. 176015 CARROLL-MCMANUS 2 2 BRUSHY CREEK (WILCOX -S-1-11200) CRIMSON EXPLORATION OPER., INC. 170197 CARROLL-MCMANUS 3 3 BRUSHY CREEK (WILCOX -S-1-11200) CRIMSON EXPLORATION OPER., INC. 172676 CARTER 1 GARCITAS CREEK (FRIO 4100) ALTA MESA SERVICES, LP 207809 CARTER, A. J. III 1 THOMASTON (YEGUA 5200) CAMOIL, INC. 117081 CARTER, WILL T. 2 WARMSLEY, S. (10550) LRE OPERATING, LLC 242492 CARTWRIGHT RANCH 1 LAGARTO (PETTUS) ROYAL PRODUCTION COMPANY, INC. 258696 CARTWRIGHT RANCH 1 LAGARTO CREEK (YEGUA) ROYAL PRODUCTION COMPANY, INC. 258153 CARTWRIGHT RANCH 2 MOUNT LUCAS (2100) ROYAL PRODUCTION COMPANY, INC. 258657 CARTWRIGHT RANCH 3 MOUNT LUCAS (COOK MTN. 5700) ROYAL PRODUCTION COMPANY, INC. 260575 CARTWRIGHT RANCH 4 MOUNT LUCAS (5500) ROYAL PRODUCTION COMPANY, INC. 264537 CARTWRIGHT RANCH 6 MOUNT LUCAS (5200) ROYAL PRODUCTION COMPANY, INC. 269254 CARTWRIGHT RANCH 9 MOUNT LUCAS (COOK MTN. 5700) ROYAL PRODUCTION COMPANY, INC. 274358 CARTWRIGHT, C. L. 1 BERCLAIR (2100) PAISANO TRADING CO. 000843 CARTWRIGHT, HOLMAN 4 MOUNT LUCAS (2100) ROYAL PRODUCTION COMPANY, INC. 003215 CARTWRIGHT, HOLMAN -A- 2 F MOUNT LUCAS (2150) ROYAL PRODUCTION COMPANY, INC. 035013 CARTWRIGHT, HOLMAN -A- 2 G MOUNT LUCAS (4300) ROYAL PRODUCTION COMPANY, INC. 034703 CARTWRIGHT, HOLMAN -A- 2D MOUNT LUCAS (1200) ROYAL PRODUCTION COMPANY, INC. 063492 CARUTHERS, E.V. 4 WILDCAT WILSON HYDROCARBON INC. 099852 CASA UNIT 1D COQUAT (LULING) MILAGRO EXPLORATION, LLC 248545 CASCADIA 1 PERDIDO CREEK (YEGUA) AURORA RESOURCES CORPORATION 182899 CASCADIA #2 1 PERDIDO CREEK (YEGUA) MERCY OIL AND GAS, LP 184329 CASKEY A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264533 CASKEY B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 265196 CASKIDS-TEXSTAR-MCDOWELL 1 KENEDY, SW. (SLIGO) ROBERT T. EPPERSON PROD CO, LLC 152476 CAT-KENEDY SWD 1 SUGARKANE (EAGLE FORD) ENAQUA SOLUTIONS, LLC 264998 CBCB&G UNIT 1 RAY-WILCOX (WALTON MASSIVE) BRITANCO, L.L.C. 121518 CEI UNIT 4H ERNIE BAKER (PECAN GAP) EOG RESOURCES, INC. 269147 CHALOUPKA 1 MEYERSVILLE,E.(MASSIVE WLCX.1ST) ABACO OPERATING, LLC 267874 CHANDLER 1 SPEARY (HACKNEY 8600) STATOIL TEXAS ONSHORE PROP LLC 242490 CHANDLER GAS UNIT 1H WARMSLEY, S. (10550) WINN EXPLORATION CO., INC. 250013 CHANDLER UNIT 2 YOAKUM (WILCOX 8,200) UNIT PETROLEUM COMPANY 093072 CHANDLER UNIT 3 YOAKUM (WILCOX 8300) UNIT PETROLEUM COMPANY 220047 CHAPMAN 1 CABEZA CREEK, S. (COOK MT S) NELSON, JAMES L. 125079 CHAPMAN 6 CABEZA CREEK, S. (COOK MT S) NELSON, JAMES L. 135869 CHAPMAN BROTHERS 1 POEHLER (COOK MT.) NELSON, JAMES L. 257145 CHAPMAN BROTHERS 1 POEHLER (YEGUA 4700) NELSON, JAMES L. 214134 CHAPMAN, M. (SUN) 1 POEHLER (MASSIVE 8250) NELSON, JAMES L. 140424 CHAPMAN, M.M. ET UX 1 POEHLER (YEGUA -B-) NELSON, JAMES L. 155084 CHARLES 1 SARTWELLE, WEST (YEGUA 5600) DEWBRE PETROLEUM CORPORATION 186977 CHARLES 2 LAVACA RIVER (YEGUA) DEWBRE PETROLEUM CORPORATION 188178 CHARLES KUESTER 21 HELEN GOHLKE ( FRIO 3300) B.P. PRODUCTIONS INC. 263765 CHARLES KUESTER A-207 A 2 HELEN GOHLKE ( YEGUA K) B.P. PRODUCTIONS INC. 203365 CHARLES NICHOLS GAS UNIT 1 ISAACKS (EDWARDS) PIONEER NATURAL RES. USA, INC. 220988 CHARLES RIEDESEL GU 1 1 DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 256547 CHARLES RIEDESEL GU 1 2 DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 272165 CHARLES RIEDESEL GU 1 3 DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 271815 CHARLEY JACOBS GAS UNIT 2 HELEN GOHLKE, E. (11060) STEPHENS PRODUCTION COMPANY 184593 CHAROLAIS 1 BRUSHY CREEK, N. (YEGUA 4800) PREMIER MINERALS, INC. 214397 CHESNUTT 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 260239


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ CHESNUTT 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 256597 CHESNUTT 02 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 258430 CHICAS LOCAS 3 ROB WELDER (WILCOX 9100) KLOTZMAN, M. S. EXPLORATION CO. 254587 CHICOLETE CREEK 1 BORCHERS, EAST (1250) MAGNUM PRODUCING, LP 250887 CHILDREN-WESTON UNIT 4H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 273438 CHILDREN'S WESTON UNIT 1HR SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 273128 CHILDREN'S WESTON UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 273486 CHILDREN'S WESTON UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 272730 CHILTON-KELLY 1 WEESATCHE, WEST (WILCOX 10550) WOFFORD, C. J. 111348 CHOATE 1 GOEBEL (9600) CONTINENTAL OPERATING CO. 240597 CHOATE 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266115 CHOATE 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 270922 CHOATE 01 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269398 CHOATE 01 04H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 273096 CHOATE 01 05H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271597 CHUMCHAL UNIT 1H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 271347 CHUMCHAL UNIT 2H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 276301 CHUMCHAL UNIT 3H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 275079 CHUMCHAL UNIT 4H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 275764 CHURCHILL, T. 2 C LA ROSA, NORTH (3550) EDDY, L. R. & MESSER, MARION 002458 CIACCIO A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266746 CISCO 3 BURNELL, SOUTH (1000) WELDER EXPLORATION & PROD., INC. 241968 CITY OF INEZ NO. 1 GAS UNIT 1B INEZ (FRIO 5200) GEONATURAL RESOURCES, INC. 188907 CLARA HICKS UNIT 1 LAVACA RIVER (FRIO 4400) ZACHRY EXPLORATION, LLC 247327 CLARK GAS UNIT 1 WARMSLEY (KORTH) LRE OPERATING, LLC 215517 CLARK GAS UNIT II 1 CHRISTMAS, DEEP (WILCOX 10800) LRE OPERATING, LLC 223305 CLARK, GARY 1 CLARK (MAGNOLIA) PIE OPERATING, LLC 198517 CLARK, S. A. 1 C SPEAKS ( 1850) SOSSAMAN, A. D. 037523 CLARK, S. A. 1 T SPEAKS ( 1900) SOSSAMAN, A. D. 036961 CLARK, TOM 1 HYSAW (EDWARDS) GULFTEX ENERGY III, LP 002258 CLARKSON, EDITH 1 PHIL POWER (4400) HUISACHE OPERATING CO. 067068 CLAUDE BLACKWELL GAS UNIT 1 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 239425 CLAUDE BLACKWELL GAS UNIT NO 1 2 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 253398 CLAUDE BLACKWELL GAS UNIT NO 1 3 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 245440 CLAUDE E. HEARD ET AL 2G GRETA (O-1-B) HILCORP ENERGY COMPANY 257876 CLAUDE E. HEARD ET AL 7 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 253969 CLAUDE E. HEARD ET AL 10 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 263007 CLAUDE E. HEARD ET AL 19 GRETA (O-1-B) HILCORP ENERGY COMPANY 250234 CLAUDE E. HEARD ET AL 34 GRETA (L-13) HILCORP ENERGY COMPANY 263226 CLAUDE E. HEARD ET AL 42 GRETA (O-1) HILCORP ENERGY COMPANY 269828 CLAUDE E. HEARD, ET AL 12 TOM O'CONNOR (4830) HILCORP ENERGY COMPANY 263640 CLAUDE E. HEARD, ET AL 17 TOM OCONNOR (5300, EAST) HILCORP ENERGY COMPANY 263639 CLAUSEN 1 COOK, S. (FRIO 2700) RILEY EXPLORATION OPG CO, LLC 193776 CLAUSEN 2 COOK, S. (FRIO 2700) RILEY EXPLORATION OPG CO, LLC 200810 CLAY PASTURE -A- 2 MCFADDIN (2000) T-C OIL COMPANY, LLC 241918 CLAY PASTURE -A- 5 MCFADDIN (2000) T-C OIL COMPANY, LLC 236296 CLAY PASTURE -A- 6 ANAQUA (2650) T-C OIL COMPANY, LLC 233743 CLAY PASTURE -B- STATE UNIT 1 ANAQUA (1700) T-C OIL COMPANY, LLC 234356 CLAY PASTURE -B- STATE UNIT 1 ANAQUA (1900) T-C OIL COMPANY, LLC 250866 CLAY PASTURE -B- STATE UNIT 1 ANAQUA (2960) T-C OIL COMPANY, LLC 274504 CLAY PASTURE -B- STATE UNIT 12 ANAQUA (3275) T-C OIL COMPANY, LLC 244869


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ CLAY PASTURE -B- STATE UNIT 13LT ANAQUA (1900) T-C OIL COMPANY, LLC 242933 CLAY PASTURE -B- STATE UNIT 13UT ANAQUA (1700) T-C OIL COMPANY, LLC 242931 CLAY WEST A 2 CLAY WEST S. (QUEEN CITY) KEBO OIL & GAS, INC. 187006 CLAY, NONA 1 CAESAR, SOUTH (WILCOX 9770) HUGHES, DAN A. COMPANY, L.P. 198742 CLAY, NONA 1 CAUSEY (11,100) HUGHES, DAN A. COMPANY, L.P. 204115 CLAYTON BLOCK 86 UNIT 4 CLAYTON (BLOCK 72 SD.) HEDRICK PRODUCTION INC. 263367 CLAYTON NORTH UNIT 1 SIMMONS CITY (GOVT. WELLS) REPUBLIC RESOURCES, LLC. 253086 CLAYTON NORTH UNIT 2 WILDCAT REPUBLIC RESOURCES, LLC. 254205 CLEMENT HEARD 1 GRETA (L-12) HILCORP ENERGY COMPANY 257067 CLEMENT HEARD 3G TOM OCONNOR (3900) HILCORP ENERGY COMPANY 250402 CLEMENT HEARD 13 GRETA (L-15) HILCORP ENERGY COMPANY 259996 CLEMENT HEARD 23 TOM OCONNOR (5450 SAND) HILCORP ENERGY COMPANY 250772 CLEMENT HEARD 26 TOM OCONNOR HILCORP ENERGY COMPANY 255716 CLEMENT HEARD 28 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 205795 CLEMENT HEARD 30 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 247337 CLEMENT HEARD 35 TOM O'CONNOR (5410) HILCORP ENERGY COMPANY 260691 CLEMENT HEARD 35 TOM OCONNOR (5450 SAND) HILCORP ENERGY COMPANY 257242 CLEMENT, G. S. 5 D TEXANA (5350) PEGASUS OPERATING, INC. 053107 CLEMENT, G. S. 5 H TEXANA (6300) COOK, LEO D. 053663 CLEMENT, GEO. 5 F TEXANA (6400) COOK, LEO D. 036916 CLEMENT, ROWENA 1 TEXANA (6600 FRIO) CARTHAY LAND COMPANY 032184 CLEMENTS, G. S. 9 TEXANA (5500, LOWER) PEGASUS OPERATING, INC. 148054 CLEMENTS, GEORGE S 7 TEXANA (6320) PEGASUS OPERATING, INC. 230681 CLEMENTS, GEORGE S. 5 H TEXANA (6500 FRIO) COOK, LEO D. 036014 CLIBURN 1 LONNIE GLASSCOCK (2600) FIRST ARANSAS RESERVES, INC. 163358 CLIBURN-WELDER 3 MARCADO CREEK, WEST (2900) CUMMINS & WALKER OIL CO., INC. 223533 CLIFF FROMME 1 DALLAS HUSKY, NE. (MASSIVE WX) WELDER EXPLORATION & PROD., INC. 236080 CLIFF FROMME 2 DALLAS HUSKY, NE. (MASSIVE WX) WELDER EXPLORATION & PROD., INC. 244430 CLIFFORD F. SPIES GAS UNIT 1 4 YORKTOWN, S (WILCOX 11100) MAGNUM PRODUCING, LP 174916 CLINTON 1 GOLIAD, WEST (1 ST MASSIVE) OAK ENERGY, LLC 209665 CLINTON 1 GOLIAD, WEST (2ND MASSIVE) OAK ENERGY, LLC 198392 CLINTON 1 OLD BUZZARD (WILCOX) OAK ENERGY, LLC 169417 COCKE AND GOODRICH UNIT 1 HELEN GOHLKE, SW. (WILCOX CONS.) WOFFORD, C. J. 134136 COHN 1 MUY BUENO (9800) LIGHTNING OIL COMPANY 230357 COHN 6 BIG OAK (FRIO 2825) LIGHTNING OIL COMPANY 190844 COHN 8 BIG OAK (FRIO 2000) LIGHTNING OIL COMPANY 200527 COHN 9 BIG OAK (FRIO 2000) LIGHTNING OIL COMPANY 200621 COLE, EMMETT 1 KELLERS CREEK, S. (7312) PONTIAC OIL, INC. 127031 COLETO CATTLE, LTD, ET AL 1 CHARCO, SE.(WILCOX, MIDDLE 9700) JONES, L. E. OPERATING, INC. 190566 COLETO POINT 1 MISSION VALLEY, W. (WILCOX G) MILAGRO EXPLORATION, LLC 176813 COLETO POINT 2 MISSION VALLEY, W. (WILCOX G) MILAGRO EXPLORATION, LLC 207640 COLETO POINT 3 MISSION VALLEY, W.(WILCOX 10600) MILAGRO EXPLORATION, LLC 274860 COLLIER 14 BEEVILLE, NORTH (HOCKLEY) ENCO EXPLORATION COMPANY 257064 COLLIER G. U. 10 THEIS, SOUTH (WILCOX 9925) ENCO EXPLORATION COMPANY 249540 COLLIER 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268181 COLLINS-MCDOWELL 2 KENEDY, CENTRAL (EDWARDS) CUMMINS & WALKER OIL CO., INC. 192305 COLLINS, CHRISTINE ET VIR 1 RIC-JOHN (FRIO 2900) CLARON CORPORATION 124173 COLLINS, MICHAEL 1 COTTONWOOD CREEK, S. (FRIO 3050) CASKIDS OPERATING COMPANY 231805 COLMAN 1H DE WITT (EAGLE FORD SHALE) MARATHON OIL EF LLC 270909 COLORADO UNIT 1 BRANDT (WILCOX 12200) HURD ENTERPRISES, LTD. 190224 COLORADO UNIT 2 COTTONWOOD, NW (12400) HURD ENTERPRISES, LTD. 191820


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ COLVIN UNIT A 1 WILDCAT BURLINGTON RESOURCES O & G CO LP 266293 COLVIN UNIT A 1 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 266294 COLVIN UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266263 COLVIN UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266285 CONNIFF UNIT A 1H EAGLEVILLE (EAGLE FORD-2) ZAZA ENERGY, LLC 267301 COOK 2-C GOWITT (YEGUA 4575) NELSON, JAMES L. 174406 COOK 2-T GOWITT (COOK MOUNTAIN) NELSON, JAMES L. 175413 COOK - FENNER UNIT 1 SNEEZY (YEGUA) PPC OPERATING COMPANY LLC 265328 COOK GAS UNIT NO 1 1 SAWFISH (EDWARDS) PIONEER NATURAL RES. USA, INC. 259558 COOK, J.G 9 HEYSER (5400 #2) XOG OPERATING LLC 128123 COOK, J.G. 1 HEYSER (3900) XOG OPERATING LLC 130162 COOLEY M. E. 3 MISSION VALLEY, W.(WILCOX 10600) MILAGRO EXPLORATION, LLC 174766 COOLEY, M. E. 1 MISSION VALLEY, WEST (MASSIVE-1) MILAGRO EXPLORATION, LLC 194567 COOLEY, M. E. 1 MISSION VALLEY, W.(WILCOX 10600) MILAGRO EXPLORATION, LLC 171763 COOLEY, M. E. 2 MISSION VALLEY, W (WILCOX 10800) MILAGRO EXPLORATION, LLC 239250 COOLEY, M. E. 5 MISSION VALLEY, W.(WILCOX 10600) MILAGRO EXPLORATION, LLC 177148 COOLEY, M. E. 7 MISSION VALLEY, W. (MASS WILCOX) MILAGRO EXPLORATION, LLC 178472 COOLEY, M. E. 9 MISSION VALLEY, W. (1350 STRAY) MARWELL PETROLEUM LTD PARTNRSHIP 088600 COOLEY, M. E. 10 MISSION VALLEY, W.(WILCOX 10600) ENDEAVOR NATURAL GAS, LP 202636 COOLEY, M. E. 13 MISSION VALLEY, W.(WILCOX 10600) MILAGRO EXPLORATION, LLC 198951 COOLEY, M. E. 14 MISSION VALLEY, W.(WILCOX 10600) MILAGRO EXPLORATION, LLC 198956 COOLEY, M. E. 15 MISSION VALLEY, W.(WILCOX 10600) MILAGRO EXPLORATION, LLC 203616 COOLEY, M. E. ET AL 2 MISSION VALLEY, W. (YEGUA 5000) MARWELL PETROLEUM LTD PARTNRSHIP 066509 COOLEY, M.E. 6 MISSION VALLEY, W.(WILCOX 10600) MILAGRO EXPLORATION, LLC 180502 COOLEY, M.E. 11 MISSION VALLEY (8300) MILAGRO EXPLORATION, LLC 218789 COOLEY, M.E. 12 MISSION VALLEY (WILCOX 9000) MILAGRO EXPLORATION, LLC 216505 COPANO GAS UNIT 38 TOM OCONNOR (4200) T-C OIL COMPANY, LLC 258672 COPELAND, A. E. ET AL 1 CROFT (SLICK) WALTON, J. B. -HICKS & BROWN 001448 CORGEY 1 MCCASKILL (LOWER WILCOX) OMEGA ENERGY, LLC 207247 COSTLOW GAS UNIT 1 BUCHEL, N.E. (EDWARDS) PIONEER NATURAL RES. USA, INC. 221343 COSTLOW GAS UNIT NO. 1 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268205 COUTRET, A. JR. 1 U ALBRECHT (YEGUA) WISEMAN, WILLIAM M. 000537 COUTRET, A., JR. 2 ALBRECHT (CATAHOULA) BELLOWS OPERATING CO., L. C. 188234 COX 3 PAISANO CREEK (PETTUS) KOVAR OPERATING, LLC 171598 COX BAY STATE TRACT NO. 59 1 MAUDE B. TRAYLOR (F-41-61, DEEP) HILCORP ENERGY COMPANY 128647 COY CITY GAS UNIT O/A 401 COY CITY (7800 -D-) LOVACA GATHERING COMPANY 001444 CRAIN GAS UNIT NO. 1 1 MEYERSVILLE, UPPER (WILCOX 8000) WHITING OIL AND GAS CORPORATION 075232 CRAIN GAS UNIT NO. 2 2 MEYERSVILLE, NORTH (WILCOX J) WHITING OIL AND GAS CORPORATION 175313 CRANDALL, RUBIE 2 CRANDALL RUBIE (WILCOX CONS.) XTO ENERGY INC. 269032 CRANDALL, RUBIE 3 CRANDALL RUBIE (MAGNOLIA) XTO ENERGY INC. 192831 CRANDALL, RUBIE 3 CRANDALL RUBIE (WILCOX CONS.) XTO ENERGY INC. 206762 CRANDALL, RUBIE 4 WILDCAT XTO ENERGY INC. 209265 CRANDALL, RUBIE 4 CRANDALL RUBIE (L. SIBLEY SAND) XTO ENERGY INC. 202798 CRANDALL, RUBY 1 CRANDALL RUBIE (MAGNOLIA) XTO ENERGY INC. 184431 CRANZ 14 SPEAKS, SW. (WILCOX 11960) MOSBACHER ENERGY COMPANY 118126 CRAVENS, E.T. 8 GANADO, WEST (5200) PREMIER NATURAL RESOURCES, LLC 155877 CRAVENS, LLC FEE 1A CIRCLE -A- (2600) TRIDENT CORPORATION 001154 CRAVENS, LLC FEE 3 CIRCLE -A- (2600) TRIDENT CORPORATION 098059 CREWS 3 GOLIAD, WEST (2ND MASSIVE) XTO ENERGY INC. 241861 CREWS 4 GOLIAD, WEST (MACHANK) XTO ENERGY INC. 243872 CREWS GAS UNIT 1 AUSTIN, W. (10600) XTO ENERGY INC. 178236


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ CREWS GAS UNIT 2 WILDCAT XTO ENERGY INC. 189444 CREWS UNIT 1H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 266739 CREWS UNIT 2H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 266779 CREWS UNIT 3H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 266708 CREWS UNIT 4H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 270874 CROCKER, P. P. G.U. #1 1 OAKVILLE (WILCOX CONS.) AWP OPERATING COMPANY 100766 CROCKER, P. P. G.U. #1 2 OAKVILLE (WILCOX CONS.) AWP OPERATING COMPANY 102246 CROCKER, PATRICIA PERKINS 1 SOL WEST (MACKHANK) ENCINO EXPLORATION, INC. 086944 CROCKER, PATRICIA PERKINS 2 SOL WEST (SECOND MACKHANK) ENCINO EXPLORATION, INC. 093602 CROCKER, PATRICIA PERKINS A 1 BRASLAU, E. (2ND MASSIVE) ENCINO EXPLORATION, INC. 095634 CROCKER, PATRICIA PERKINS A 2 BRASLAU, E. (2ND MASSIVE) ENCINO EXPLORATION, INC. 091837 CROCKER, PATRICIA PERKINS A 4 BRASLAU, E. (2450) ENCINO EXPLORATION, INC. 091838 CROSSROADS 1 LA WARD, NORTH (6300) MAGNUM PRODUCING, LP 183658 CROW A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 261062 CROW A 2H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266110 CROW A 3H SUGARKANE (EAGLE FORD) DEVON ENERGY PRODUCTION CO, L.P. 266822 CROWN 1 TYNAN, EAST (FRIO 4800) GREAT TEXAS CRUDE INC. 167057 CUERO SWD 1 DE WITT (EAGLE FORD SHALE) STINGRAY WELLS, LLC 272909 CUERO SWD 1 MORAY (EDWARDS) PYOTE WELL SERVICE, LLC 265940 CULLEN 2A SPEAKS, S.W. (12010) WOFFORD, C. J. 137847 CULLEN TRUST 1 SARTWELLE, W. (WILCOX 2) REPUBLIC RESOURCES, LLC. 264269 CULLEN UNIT 1 3 SPEAKS, SW. (12,670) WOFFORD, C. J. 192308 CULLEN UNIT 2 3 SPEAKS, SW. (12,670) WOFFORD, C. J. 187966 CULLEN UNIT 2 4 SPEAKS, SW (MIDDLE WILCOX-CONS.) WOFFORD, C. J. 217419 CUNNINGHAM 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 197435 CURRER, G. W. GAS UNIT 1 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 064111 CURTIS FOESTER 2 MAGNOLIA BEACH (8700) C & E OPERATING, INC. 250710 CUSACK GAS UNIT 1 1 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 263820 CUTBIRTH 1 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 226043 CUTBIRTH 2 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 238216 CUTBIRTH UNIT 1 WILDCAT COASTAL EXPL. & DEV. CORP. 186445 D BAKER UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 274458 D BAKER UNIT A 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 274459 D BAKER UNIT A 5 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 275694 D BAKER UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266283 D. BAKER UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 264000 D. BAKER UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266296 D. BOOTHE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268546 D. LAMBERT 1 KOENIG, NORTH (WILCOX MIGURA) HILCORP ENERGY COMPANY 249472 D. ROSE ET AL UNIT 1 LONKEN (7030) ZACHRY EXPLORATION, LLC 257479 D. WARZECHA A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268555 DAGG RANCH 1 DRY HOLLOW (UPPER ROCHELLE) CANTERA OPERATING, LLC 198350 DAGG RANCH 1 DRY HOLLOW (WILCOX MASSIVE) CANTERA OPERATING, LLC 198347 DAGG RANCH 2 DRY HOLLOW (WILCOX LAMPLEY) CANTERA OPERATING, LLC 223659 DAGG, HILDA S. 1 DRY HOLLOW (WILCOX DAGG) CANTERA OPERATING, LLC 102263 DAHL 1 BURNELL GAITHER PETROLEUM CORPORATION 237435 DAHLSTROM 1 MAYO (FRIO 6530) UNITED OPERATING, LLC 094863 DANA 1 H. THOMAS (CATAHOULA 2800) LODI OPERATING COMPANY LLC 252941 DANFORTH 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 188952 DANFORTH-DYE 3 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 212169 DANFORTH-DYE 4 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 215296


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ DANIEL 1 BENBOW (LOWER WILCOX A) DEWBRE PETROLEUM CORPORATION 269204 DAVID SAENZ 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268533 DAVILA 1 KAWITT (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 166663 DAVILA UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268657 DAVILA UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 266118 DAVILA-GRAHAM UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270119 DAVILA-GRAHAM UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270323 DAVIS 1 WEESATCHE, NE. (HOLT FB A) GEISER OPERATING, INC. 164234 DAVIS 2 WEESATCHE, NE. (WILCOX 10,030) GEISER OPERATING, INC. 168353 DAVIS 3 WEESATCHE, NE. (HOLT FB A) GEISER OPERATING, INC. 169888 DAVIS UNIT 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 260301 DAVIS 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267246 DAVIS 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267655 DAVIS, N. B. 7 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 176337 DAVIS, NONA B. 48 YOUGEEN (STILLWELL 4100) WELDER EXPLORATION & PROD., INC. 004842 DAVIS, NONA BERRY YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 259864 DAVIS, NONA BERRY 11 YOUGEEN WELDER EXPLORATION & PROD., INC. 252946 DAVIS, NONA BERRY 20 YOUGEEN WELDER EXPLORATION & PROD., INC. 252954 DAVIS, NONA BERRY 23 YOUGEEN WELDER EXPLORATION & PROD., INC. 261285 DAVIS, NONA BERRY 28 YOUGEEN (FRIO 3610) WELDER EXPLORATION & PROD., INC. 225640 DAVIS, NONA BERRY 42 YOUGEEN (FRIO 3610) WELDER EXPLORATION & PROD., INC. 258433 DAVIS, NONA BERRY 45 YOUGEEN WELDER EXPLORATION & PROD., INC. 253255 DAVIS, NONA BERRY 47 YOUGEEN (FRIO 3610) WELDER EXPLORATION & PROD., INC. 226047 DAVIS, NONA BERRY 52 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 252948 DAVIS, NONA BERRY 58 YOUGEEN (STILLWELL 4100) WELDER EXPLORATION & PROD., INC. 234230 DAVIS, NONA BERRY 59 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 231283 DAVIS, NONA BERRY 61 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 240560 DAVIS, NONA BERRY 62 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 233288 DAVIS, NONA BERRY 64 YOUGEEN WELDER EXPLORATION & PROD., INC. 247677 DAVIS, NONA BERRY 65 YOUGEEN (STILLWELL 4100) WELDER EXPLORATION & PROD., INC. 259272 DAVIS, NONA BERRY 65 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 262208 DAVIS, NONA BERRY 67 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 262151 DAVIS, NONA BERRY 69 YOUGEEN (PETERS, MIDDLE) WELDER EXPLORATION & PROD., INC. 269207 DAVIS, NONA BERRY 71 YOUGEEN WELDER EXPLORATION & PROD., INC. 269976 DAVIS, NONA BERRY 72 YOUGEEN (PETERS, MIDDLE) WELDER EXPLORATION & PROD., INC. 269206 DAVIS, NONA BERRY 73 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 272579 DE GOLYER 4 POWDERHORN, SOUTH (4600) PRIME OPERATING COMPANY 160680 DE LA GARZA GAS UNIT 1 L MARSHALL (MIDDLE WILCOX) RINCON PETROLEUM CORPORATION 226885 DE LA GARZA GAS UNIT 1 U GLADYS POWELL (8000) RINCON PETROLEUM CORPORATION 225275 DEAVERS, D. F. -A- 1 VICTORIA (4000) R & S SERVICES 034390 DEBILL 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266221 DEBILL 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268939 DEBILL 01 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271602 DEBILL 01 04H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271129 DEBILL 01 05H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271131 DEBILL 01 06H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271598 DEBILL 01 07H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271407 DEBILL 01 08H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271836 DEBILL 01 09H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271854 DEBILL 01 13H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 276622 DEBILL 01 14H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 276625


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ DEBORD 1 HOPE (JACOBS 2980) MOOSE OPERATING CO., INC. 168426 DEBORD 1 RUSSEK (7730) WEISER-BROWN OPERATING COMPANY 237954 DEBORD GAS UNIT 1 KINKLER (5700) WJC, INC. 256120 DEBORD, L. E. 1 HOPE, NE. (2700) SCHINDLER EXPLORATION INC. 102821 DEGOLYER 9 POWDERHORN, SOUTH (4600) PRIME OPERATING COMPANY 162765 DEHNERT UNIT 1 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 211534 DEHNERT UNIT 2 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 221923 DEHNERT UNIT 3 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 231735 DELILAH 1 LIMES (WILCOX 9500) MODERN EXPLORATION, INC. 178221 DEMMER-ATZENHOFFER GAS UNIT 1 BELITZ (9200) HILCORP ENERGY COMPANY 038440 DENA FOREHAND 2H SUGARKANE (EAGLE FORD) MARSHFIELD OIL & GAS, LLC 264458 DENNEY 1 MOOSE OIL & GAS (FRIO 2775) SOUNDLOGIC PROD. & EXPLOR., LLC 163090 DENNIS O'CONNOR ET AL -L- L 13 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 188455 DENNIS O'CONNOR ET AL -L- L 57 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 217977 DENNIS O'CONNOR ET AL -L- L 58 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 187120 DENNIS O'CONNOR ET AL -N- N 6 HUFF (2150) T-C OIL COMPANY, LLC 210062 DENNIS O'CONNOR ET AL -N- N 7 HUFF (2150) T-C OIL COMPANY, LLC 240871 DENTLER, OTTO P. UNIT NO. 1 1 T MEYERSVILLE (MASSIVE II) HARKINS & COMPANY, ETAL 003178 DENTON 1 H. THOMAS (CATAHOULA 2800) EAGLE ENERGY DEVELOPMENT CO 128597 DEVINE PROSPECT 1 BRUSHY CREEK (WILCOX -S-1-11200) ASCHERE OPERATING COMPANY, LLC 275683 DEWITT COUNTY HWY 87 1 DE WITT (EAGLE FORD SHALE) PYOTE WELL SERVICE, LLC 263753 DICKSON FOUNDATION 1 HOUND DOG (MID. WILCOX 12000) HILCORP ENERGY COMPANY 154087 DICKSON FOUNDATION GU 2 HOUND DOG (MID. WILCOX 12000) HILCORP ENERGY COMPANY 232239 DICKSON, R. FOUNDATION 1 HOUND DOG (MID. WILCOX 12000) SEVENBAR RESOURCES, LLC 216386 DICKSON, R. FOUNDATION 2 PROVIDENT CITY NE (LWR WX. CONS) HOWARD EXPLORATION, INC. 225644 DIEBEL "B" 1 SALEM (3750) ALTA MESA SERVICES, LP 210048 DIEBEL "C" 1 SALEM (3750) ALTA MESA SERVICES, LP 217781 DIEBEL "D" 1 SALEM (3880) ALTA MESA SERVICES, LP 207868 DIEBEL, ALFRED UNIT 1 BRANDT (WILCOX 11100) COASTLINE EXPLORATION, INC. 131923 DIETZEL HEIRS 1 PRIDHAM LAKE, WEST (4600) PETRODOME OPERATING, LLC 269420 DIETZEL, HERMAN ESTATE 3 COLETTO CREEK, E. (2300 GAS SD.) ARIES OPERATING, LP 184650 DIETZEL, HERMAN ESTATE 7 COLETTO CREEK (2600) ARIES OPERATING, LP 178467 DIETZEL, HERMANN ESTATE 3 PRIDHAM LAKE (OAKVILLE) ARIES OPERATING, LP 203697 DIETZEL, N. L. 1 COLETTO CREEK (3600) DESANA DEVELOPMENT CORPORATION 144353 DILWORTH GAS UNIT 4 KARON (MACKHANK) BREITBURN OPERATING L.P. 124043 DILWORTH UNIT-WN 2AL KARON (MACKHANK) BREITBURN OPERATING L.P. 119743 DILWORTH UNIT-WN 2AU KARON (SLICK) BREITBURN OPERATING L.P. 002317 DILWORTH UNIT-WN 3 KARON (SLICK) BREITBURN OPERATING L.P. 042748 DIMON SWD 1A MUY BUENO (9800) MAGNUM PRODUCING, LP 192708 DINCANS, A. T. JR. 2 TORO GRANDE (9000 SD) DOUBLE PLAY OIL & GAS, INC 175969 DIRECT ASSETS UNIT 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 268162 DIRECT ASSETS UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 260314 DIRECT ASSETS UNIT AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 275700 DIRKS 2 TULETA, SOUTH (HOCKLEY 3450) INLAND OCEAN, INC. 211113 DIRKS - MAYFIELD 1 TULETA, SOUTH (HOCKLEY 3450) INLAND OCEAN, INC. 200551 DIRKS-MCKENZIE 2 DIRKS (HOCKLEY 3300) RR VENTURES LIMITED PARTNERSHIP 131462 DIRKS-MCKENZIE 10 COSDEN, W. (2600 FRIO) SOUTH TEXAS INJECTION COMPANY 086139 DITTRICH, A.L. ET AL 1 H. THOMAS (CATAHOULA 2800) EAGLE ENERGY DEVELOPMENT CO 137991 DLUGOSCH 1 YORKTOWN (7200) C.F.O., INC. 164631 DLUGOSCH 1H WARMSLEY, S. (10550) ABRAXAS PETROLEUM CORPORATION 259313 DLUGOSCH 1H WARMSLEY, S. (10550) WHITING OIL AND GAS CORPORATION 248298


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ DLUGOSCH 3 YORKTOWN (7200) 5-D OPERATING INC 166238 DLUGOSCH A 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 267300 DLUGOSCH GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 261081 DLUGOSCH, PHILLIP 1 COOK (WILCOX 9400) B.P. PRODUCTIONS INC. 135416 DOBBS 1 KEMPER, EAST (3120) NEW CENTURY EXPLORATION, INC. 236275 DOBIE 2 JACKSON RANCH (YEGUA 5300) WELDER EXPLORATION & PROD., INC. 236792 DOBIE 3 DINERO, W. (4300) WELDER EXPLORATION & PROD., INC. 236805 DOBIE HEIRS 1 DINERO, W. (YEGUA 5300) KOVAR OPERATING, LLC 117865 DOBIE RANCH 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259025 DOBIE RANCH 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272371 DOC-N/RR-C UNIT 1 HUFF (2900) T-C OIL COMPANY, LLC 261876 DOHMANN 1 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 188649 DOHMANN 2 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 226042 DOHMANN "A" 4 WEESATCHE, SW. (COOK MT. 5300) HOUSTON GULF ENERGY CORPORATION 234520 DOHMANN GAS UNIT 4 WEESATCHE, SOUTH ( LULING) RODEL OIL & GAS COMPANY 126748 DOHMANN, A. C. 1 WEESATCHE, SOUTH (2100) NELSON, JAMES L. 176356 DOLAN 1A DOLAN (HOSTETTER) TIDEWATER MINERALS CORPORATION 102613 DOLORES 1 WORD, N. (EDWARDS) ALEGRE ENERGY, INC. 228026 DOMINION FEE 1 HOLZMARK (11100, C2) XTO ENERGY INC. 211703 DOMINION FEE 2 HOLZMARK (10800) XTO ENERGY INC. 218589 DON ROSS GAS UNIT 1 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 204897 DONDLINGER, UNIT 1 BORCHERS, SOUTH (3500) MCDANIEL, D. L. 072735 DONNELLY 2 WILDCAT TRIO CONSULTING & MANAGEMENT,LLC 274833 DONOGHUE GAS UNIT 5-E 1 OCONNOR RANCH (FRIO CONS.) APACHE CORPORATION 198013 DOPSLAUF 2 VIENNA (8400) COASTAL INVESTMENTS INC. 074541 DORNAK, AUGUST 2 WORD (5800) BURKE, B. B. 004787 DORNBURG 1ST EMMA HAYNES (11,400 WILCOX) MILAGRO EXPLORATION, LLC 238754 DORNBURG UNIT 2-C BRANDT (YEGUA 4700) COASTLINE EXPLORATION, INC. 172032 DOROTHY NICHOLSON UNIT II 2 CLAYTON (SLICK 6450) KENNE EXPLORATION, INC. 148323 DOROTHY WALTERS 1 WILDCAT DEVON ENERGY PRODUCTION CO, L.P. 216730 DOROTIK G. U. 1R BORCHERS, SOUTH (3600) MAGNUM PRODUCING, LP 270531 DORRIS GAS UNIT 3 BEGO (CONSOLIDATED) CODY ENERGY LLC 168422 DOS HOMBRES 1 B GEORGE WEST, W. (QUEEN CITY,LO.) SANDEL OPERATING COMPANY 201438 DOUBLE SEVENS 1 TYNAN (3600) GREAT TEXAS CRUDE INC. 174422 DOUBLE T 1 GAS UNIT 1 JENNIE BELL (WILCOX 11500) HILCORP ENERGY COMPANY 242691 DOUGHERTY A 2 TULETA (FRIO 2400) RINCON PETROLEUM CORPORATION 270611 DOUGHERTY PROPERTIES -C- 1 DOUGHERTY RANCH (10350) HUGHES, DAN A. COMPANY, L.P. 106806 DOUGHERTY 222 3 C LYNE MAXINE (WILCOX) SANDEL OPERATING COMPANY 162482 DOUGHERTY-STRIEBECK 1 ELMS DEEP (8400) HOLLIMON OIL CORPORATION 214353 DOUGHERTY-STRIEBECK 1 MOUNTAIN VIEW, N. (8100) HOLLIMON OIL CORPORATION 235847 DOUGLAS 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 259979 DOUGLAS 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266388 DOUGLAS 02 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268094 DOVALINA GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 266172 DOW 2D PROVIDENT CITY, NE (2100) HOWARD EXPLORATION, INC. 182007 DOW 3 PROVIDENT CITY (3960, EAST) HOWARD EXPLORATION, INC. 268467 DOWELL, M. E. 4 PROVIDENT CITY, NE. (3390) B D PRODUCTION CO., INC. 273045 DRAPALLA, I 1 COTTONWOOD CREEK, S. (FRIO 2300) FINALY RESOURCES LLC 123686 DREIER 1 MISSION VALLEY, W.(WILCOX 10600) HURD ENTERPRISES, LTD. 214338 DREIER 2 MISSION VALLEY, W.(WILCOX 10600) HURD ENTERPRISES, LTD. 239383 DREIER 4 MISSION VALLEY, W (WILCOX 10200) HURD ENTERPRISES, LTD. 254578


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ DREIER SWD 1 EDNA GORDON (FRIO 3260) XTO ENERGY INC. 232974 DREYER, WILLIAM 2 MISSION VALLEY (10,220) UNION GAS OPERATING COMPANY 179397 DREYER, WILLIAM 3 MISSION VALLEY, W.(WILCOX 10600) UNION GAS OPERATING COMPANY 179765 DREYER, WILLIAM 4 MISSION VALLEY, W.(WILCOX 10600) UNION GAS OPERATING COMPANY 206419 DRUMMOND 6 WEST RANCH (WARD) PHERE OPERATING INC 102146 DRUMMOND, J. H. 3 WEST RANCH (GLASSCOCK) PHERE OPERATING INC 270513 DRUMMOND, J.H. 1E WEST RANCH (5000) ETABA OPERATING COMPANY 128671 DRUSHEL 1 BIG 12 (11,900) NEUMIN PRODUCTION COMPANY 177233 DRUSHEL 1 CARMICHAEL (2500) FINGER OIL & GAS, INC. 265227 DRUSHEL 1R CARMICHAEL (WILLIAM) ALTA MESA SERVICES, LP 214376 DRUSHEL 6AT CORDELE (4600) BLACKSTONE PETRO ENERGY, LP 131366 DRUSHEL -A- 10 CORDELE ( 2550) BLACKSTONE PETRO ENERGY, LP 129986 DRUSHEL -B- 5 CORDELE (1750 PINHEAD) BLACKSTONE PETRO ENERGY, LP 131574 DRUSHEL -B- 6 CORDELE, WEST (TIGER) BLACKSTONE PETRO ENERGY, LP 001407 DRUSHEL -B- 7 C CORDELE, W. (CLONE) BLACKSTONE PETRO ENERGY, LP 130671 DRUSHEL -B- 7 T CORDELE, WEST (TRAYLOR, UPPER) BLACKSTONE PETRO ENERGY, LP 130672 DRUSHEL -B- 14 CORDELE (1750 PINHEAD) BLACKSTONE PETRO ENERGY, LP 131623 DRUSHEL -B- 15 CORDELE ( 2550) BLACKSTONE PETRO ENERGY, LP 135296 DRUSHEL S.G. -A- 14 CORDELE (2600) BLACKSTONE PETRO ENERGY, LP 127268 DRUSHEL, S. G. 2A CORDELE (4000) BLACKSTONE PETRO ENERGY, LP 133400 DRUSHEL, S. G. 9 CORDELE (3980) BLACKSTONE PETRO ENERGY, LP 145054 DRUSHEL, S. G. 10 CORDELE (3825) BLACKSTONE PETRO ENERGY, LP 146757 DRUSHEL, S. G. 15 CORDELE (M-2U) BLACKSTONE PETRO ENERGY, LP 148726 DRUSHEL, S. G. "A" 16 CORDELE, WEST (TRAYLOR, LOWER) BLACKSTONE PETRO ENERGY, LP 138315 DRUSHEL, S.G. 5 CORDELE (M-1U) BLACKSTONE PETRO ENERGY, LP 131370 DRUSHEL, S.G. 6AC CORDELE, W. (CATAHOULA KARYN) BLACKSTONE PETRO ENERGY, LP 131747 DRUSHEL, S.G. -A- 1 CORDELE (2610) BLACKSTONE PETRO ENERGY, LP 129601 DRUSHELL, S. G. -A- O/A 3 CORDELE (M-1U) BLACKSTONE PETRO ENERGY, LP 084313 DRY HOLLOW SWD 1 DRY HOLLOW (WILCOX MASSIVE) CANTERA OPERATING, LLC 176499 DUBOSE 1 WILDCAT CRIMSON EXPLORATION OPER., INC. 266878 DUBOSE, GRADY & THAMES, LUCILLE 2 MINERAL, WEST (FRIO) CORDELE DEVELOPMENT CORPORATION 160700 DUDERSTADT 1 MARSHALL (FRIO II B) CABEZA OIL AND GAS, LLC 201295 DUDERSTADT 2 A MARSHALL (FRIO II B) CABEZA OIL AND GAS, LLC 213134 DUDERSTADT 7 MARSHALL (FRIO II B) CABEZA OIL AND GAS, LLC 133414 DUDERSTADT TRUST 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 266387 DUDERSTADT 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 260466 DUDERSTADT-FROMME UNIT 1 BRANDT (RECKLAW) NELSON, JAMES L. 103948 DUDERSTADT, DARWIN 1 BRANDT (YEGUA 4700) BASIC ENERGY SERVICES, L.P. 081659 DUDERSTADT, DARWYN ET.AL. 1 A MARSHALL (MIDDLE WILCOX) CABEZA OIL AND GAS, LLC 188647 DUDERSTADT, J. B. 1 FRIAR RANCH, S. (CONSOLIDATED) HILCORP ENERGY COMPANY 232872 DUDERSTADT, J. B. 3 FRIAR RANCH, S. (CONSOLIDATED) HILCORP ENERGY COMPANY 245525 DUDERSTADT, SOPHIE S. GAS UNIT 1 SLIVA (3600) STEPHENS & JOHNSON OPERATING CO. 066805 DUGAT, LENA ET AL 1A DIRKS (HOCKLEY 3300) DOUBLECHEK OPERATING 132178 DUGAT, LENA ET AL 2 COSDEN, WEST (VICKSBURG, UPPER) STARK PETROLEUM 118079 DUGGER, CHARLOTTE 3 TRAYLOR (8200) FULLER, ANCIL T. 126023 DUKE RANCH -F- 1 TEJAS (FRIO 4800) T-C OIL COMPANY, LLC 212605 DUKE RANCH -G- 1 TEJAS (FRIO 4800) T-C OIL COMPANY, LLC 235658 DUKE RANCH -K- 2 TEJAS (FRIO 4800) T-C OIL COMPANY, LLC 236290 DUKE RANCH -K- 2 TEJAS (FRIO 5100) T-C OIL COMPANY, LLC 220799 DUKE RANCH -M 3 TEJAS (FRIO 5100) T-C OIL COMPANY, LLC 220684 DUKE RANCH -M- 1 TEJAS (FRIO 5000) T-C OIL COMPANY, LLC 235661


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ DUKE RANCH -M- 2 TEJAS (FRIO 5000) T-C OIL COMPANY, LLC 255703 DUKE RANCH -M- 2 TEJAS (FRIO 5100) T-C OIL COMPANY, LLC 214431 DUKE RANCH -M- 3 TEJAS (FRIO 4600) T-C OIL COMPANY, LLC 255664 DUKE RANCH -S- 1 TEJAS (FRIO 5100) T-C OIL COMPANY, LLC 220279 DUKE RANCH -T- 1 TEJAS (FRIO 5100) T-C OIL COMPANY, LLC 212604 DUKE RANCH -V- 1 TEJAS (FRIO 4800) T-C OIL COMPANY, LLC 214365 DUKE RANCH -W- 1 TEJAS (FRIO 4800) T-C OIL COMPANY, LLC 216602 DUKE RANCH -10- 1 TEJAS (FRIO 5000) T-C OIL COMPANY, LLC 257650 DUKE RANCH -10- 1 TEJAS (FRIO 5100) T-C OIL COMPANY, LLC 220567 DUKE RANCH "F" 1 TEJAS (STRAY SAND) T-C OIL COMPANY, LLC 261263 DULLYE 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 259501 DUNN 1ST COQUAT (10500) MILAGRO EXPLORATION, LLC 247652 DUNN 3 COQUAT (10500) MILAGRO EXPLORATION, LLC 236813 DUNN "A" 1 DUNN (SLICK-WILCOX) BELLOWS OPERATING CO., L. C. 151556 DUNWOODY, CHARLES 1 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 129275 DUNWOODY, CHARLES 5 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 092602 DUNWOODY, CHARLES 6 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 129271 DUNWOODY, CHARLES 10 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 055372 DUNWOODY, CHARLES 13 HEYSER (F-39) MCGOWAN WORKING PARTNERS, INC. 129098 DUNWOODY, CHARLES 15 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 129277 DUNWOODY, CHARLES 16 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 127343 DUNWOODY, CHARLES S. 14 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 090349 DUNWOODY, CHARLES S. 17 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 089895 DUNWOODY, CHARLES S. (PF) 1 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 089496 DUTY 1 NORMANNA, E. (FRIO) ALAMO OPERATING COMPANY, L. C. 187895 DUTY 2 NORMANNA, E. (FRIO) ALAMO OPERATING COMPANY, L. C. 163343 DUTY GAS UNIT 3 U MAXINE, EAST (9100) COLUMBUS ENERGY, LLC 115714 DUTY GAS UNIT 3-L MAXINE, EAST (9500) COLUMBUS ENERGY, LLC 159161 DUTY GAS UNIT 4 MAXINE, E. (10,000) COLUMBUS ENERGY, LLC 175658 DUTY GAS UNIT 5-C MAXINE, EAST (MACKHANK) COLUMBUS ENERGY, LLC 097328 DUTY GAS UNIT 5-T MAXINE, EAST (MASSIVE) COLUMBUS ENERGY, LLC 180278 DUTY GAS UNIT 5-T MAXINE, EAST (MASSIVE, LO.) COLUMBUS ENERGY, LLC 173834 DUTY, H.O. GAS UNIT 2 MAXINE, EAST (8400) COLUMBUS ENERGY, LLC 129327 DWORACZYK 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 263957 DWORACZYK 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268714 DWORACZYK 01 03H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268713 DWORACZYK 01 04H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268666 DWORACZYK 01 05H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 271293 DWORACZYK 01 06H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 272946 DWORACZYK 01 07H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 272910 DZIUK A 1H SUGARKANE (EAGLE FORD) DEVON ENERGY PRODUCTION CO, L.P. 269043 E. BAKER GAS UNIT 3 MIKESKA (2ND TOM LYNE) MILAGRO EXPLORATION, LLC 175924 E. BAKER GAS UNIT 4 MIKESKA (2ND TOM LYNE) MILAGRO EXPLORATION, LLC 226073 E. BUTLER A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 265520 E. HENKE 1 WEESATCHE, WEST (COOK MT.) NELSON, JAMES L. 242488 E. HERMES 1 HALLETTSVILLE (8750) CRAWFORD HUGHES OPERATING CO. 257241 E. JOHNSON GAS UNIT 1-E 1 KENEDY, SW. (EDWARDS) DEWBRE PETROLEUM CORPORATION 110781 E. L. MCCOLLUM ET AL UNIT 1 HELEN GOHLKE (WILCOX, LO.) VALENCE OPERATING COMPANY 068157 E. L. MCCOLLUM GAS UNIT 3 HELEN GOHLKE (WILCOX, LO.) VALENCE OPERATING COMPANY 248220 E. L. MCCOLLUM GAS UNIT 4 HELEN GOHLKE, SW. (WILCOX CONS.) VALENCE OPERATING COMPANY 258701 E. R. BLACKWELL GAS UNIT 1 1 KAWITT (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 236294


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ E. WASKOW UNIT 1 KAWITT (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 067138 E. YATES GAS UNIT 1 MORALES, N. (9250) ACOCK OPERATING LIMITED 162985 E.P.C. G U 1A 1 PROVIDENT CITY NE (LWR WX. CONS) NEWFIELD EXPLORATION COMPANY 188312 E.P.C. GU 1 2 PROVIDENT CITY NE (LWR WX. CONS) NEWFIELD EXPLORATION COMPANY 196997 E.P.C. GU 1 3 PROVIDENT CITY NE (LWR WX. CONS) NEWFIELD EXPLORATION COMPANY 222486 E.R.RHODES TRUST GAS UNIT 1 1 R KAWITT (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 220782 EARNEST GAS UNIT 1 2 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 260956 EARNEST GAS UNIT 1 A 3H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 273083 EARP 1 COLOGNE (4800) PREMIER MINERALS, INC. 206436 EASLEY UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 258260 EAST HALLETTSVILLE GAS UNIT 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 138274 EAST HALLETTSVILLE GAS UNIT 2 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 145402 EAST MAXINE UNIT 1 1 MAXINE, EAST (MASSIVE, LO.) BRITANCO, L.L.C. 070760 EAVES 1 SPEAKS, SW. (RAINBOW) CRIMSON EXPLORATION OPER., INC. 173469 EAVES 3 SPEAKS, SW. (RAINBOW) CRIMSON EXPLORATION OPER., INC. 179359 EAVES 5 SPEAKS, SW (MIDDLE WILCOX-CONS.) COASTAL PLAINS ENERGY, INC. 219896 EAVES 6 SPEAKS, SW. (RAINBOW) CRIMSON EXPLORATION OPER., INC. 220979 EAVES 6 SPEAKS, SW. (3400) COASTAL PLAINS ENERGY, INC. 216270 EBERSTADT 1 CAESAR, SOUTH (WILCOX 9770) SHALE HUNTER, LLC 255700 EBERSTADT 2 CAESAR, SOUTH (5650) ANDERSON OIL LTD. 200528 EBERSTADT 4 CAESAR, SOUTH (5650) ANDERSON OIL LTD. 208133 EBERSTADT 7 CAESAR, SOUTH (5650) ANDERSON OIL LTD. 221072 EBERSTADT 10 CAESAR, SOUTH (5650) ANDERSON OIL LTD. 239795 EBERSTADT 11 CAESAR, SOUTH (3060) ANDERSON OIL LTD. 248616 EBERSTADT 12 CAESAR, N. (PETTUS) ANDERSON OIL LTD. 254799 EBERSTADT 14 CAESAR, N. (PETTUS) ANDERSON OIL LTD. 256146 EBERSTADT 15 CAESAR, N. (PETTUS) ANDERSON OIL LTD. 258713 EBERSTADT UNIT "B" 1 WILDCAT ANDERSON OIL LTD. 218216 ECKHARDT RANCH GU1 C 2H SUGARKANE (AUSTIN CHALK) STATOIL TEXAS ONSHORE PROP LLC 275725 ECKHARDT RANCH GU1 C 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 275594 ED AND JACQUIE YANTA UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268970 EDGAR SMITH 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 266389 EDLER, J. B. 25 C YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 211845 EDLER, J. B. 25 T YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 211840 EDLER, J. B. 28 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 231280 EDLER, J. B. 35 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 240437 EDLER, J. B. 37 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 240441 EDLER, J. B. 38 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 270857 EDLER, J. B. 39 YOUGEEN (PETERS, MIDDLE) WELDER EXPLORATION & PROD., INC. 272211 EDLER, J. B. 41 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 270484 EDLER, J.B. 14 YOUGEEN WELDER EXPLORATION & PROD., INC. 248343 EDLER, J.B. 20 YOUGEEN (FRIO 3610) WELDER EXPLORATION & PROD., INC. 258955 EDLER, J.B. 24 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 259886 EDLER, J.B. 26 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 262719 EDLER, J.B. 26 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 231281 EDLER, J.B. 29 YOUGEEN (5500) WELDER EXPLORATION & PROD., INC. 253826 EDLER, J.B. 30 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 253841 EDLER, J.B. 32 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 252951 EDLER, J.B. 33 YOUGEEN (5500) WELDER EXPLORATION & PROD., INC. 259322 EDLER, J.B. 36 YOUGEEN (5500) WELDER EXPLORATION & PROD., INC. 259320 EDLER, J.B. 39 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 267671


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ EDLER, J.B. 40 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 272213 EDLER, J.B, 23 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 183644 EDWARD H. SEIFERT, ET UX 2 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 194166 EDWARD KESELING GAS UNIT 1 1 YORKTOWN, NE. (EDWARDS) PIONEER NATURAL RES. USA, INC. 247814 EDWARD ROEDER 02 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 266403 EDWARD ROEDER 02 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 271406 EDWARD ROEDER 02 03H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 271327 EDWARD ROEDER 02 04H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 271534 EDWARD ROEDER 03 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 266401 EDWARDS 1 WILDCAT CANTERA OPERATING, LLC 183233 EDWARDS 1 MEDIO CREEK (3000) T-C OIL COMPANY, LLC 245434 EDWARDS 1 MEDIO CREEK (4300) T-C OIL COMPANY, LLC 255115 EDWARDS 2 MEDIO CREEK, EAST (2900) T-C OIL COMPANY, LLC 255742 EDWARDS 3 MEDIO CREEK (3000) T-C OIL COMPANY, LLC 256080 EDWARDS GAS UNIT 1 DRY HOLLOW (WILCOX MASSIVE) CANTERA OPERATING, LLC 181571 EDWARDS GAS UNIT 2 DRY HOLLOW (ROCHELLE SAND) CANTERA OPERATING, LLC 184523 EDWARDS GAS UNIT 2 DRY HOLLOW (UPPER ROCHELLE) CANTERA OPERATING, LLC 184533 EDWARDS GAS UNIT 2 DRY HOLLOW (WILCOX MASSIVE) CANTERA OPERATING, LLC 184428 EDWARDS GAS UNIT 3 DRY HOLLOW (WILCOX LAMPLEY) CANTERA OPERATING, LLC 221963 EDWARDS GAS UNIT 3 DRY HOLLOW (13,900 WILCOX) CANTERA OPERATING, LLC 191554 EDWARDS GAS UNIT 4 DRY HOLLOW (13,900 WILCOX) CANTERA OPERATING, LLC 192439 EDWARDS GAS UNIT 5 DRY HOLLOW (WILCOX LAMPLEY) CANTERA OPERATING, LLC 218473 EDWARDS GAS UNIT 5 DRY HOLLOW (13,900 WILCOX) CANTERA OPERATING, LLC 198402 EGG-JUNKER ET AL UNIT 2 C ARNECKEVILLE (FRIO 2620) NELSON, JAMES L. 077813 EGG-JUNKER ET AL UNIT 2 T ARNECKEVILLE (YEGUA 4870) NELSON, JAMES L. 077252 EGG-JUNKER ET AL UNIT 3 ARNECKEVILLE (YEGUA 4870) NELSON, JAMES L. 078781 EICHHORN A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266810 EICHHORN GAS UNIT 1 DRY HOLLOW (11024) B D PRODUCTION CO., INC. 245567 EICHHORN GAS UNIT 1 YORKTOWN, NE. (EDWARDS) PIONEER NATURAL RES. USA, INC. 234204 EICHMAN - LANGE GAS UNIT 3 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 219387 EICHMAN GAS UNIT 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 211723 EICHMANN-LANGE GAS UNIT 2 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 212776 EILERS, W. A. 2 WORD, N. (EDWARDS) WHITING OIL AND GAS CORPORATION 090041 EILERS, W. A. 2H WORD, N. (EDWARDS) WHITING OIL AND GAS CORPORATION 185712 EILERS, W.A. 3H WORD, N. (EDWARDS) WHITING OIL AND GAS CORPORATION 217936 EILERS, WILLIAM A. 1 WORD, N. (EDWARDS) WHITING OIL AND GAS CORPORATION 086991 EINKAUF GAS UNIT 1 HALLETTSVILLE, SOUTH (ANDERSON) VALENCE OPERATING COMPANY 077822 EL OSO CATTLE COMPANY 24 MARY ELLEN OCONNOR (3100) DOLPHIN PETROLEUM, LP 154721 EL PASO NATURAL GAS 1 CHAPA, EAST (9500) TIDEWATER MINERALS CORPORATION 140659 EL PASO NATURAL GAS 2 CHAPA (JACKSON 2100) DISCOVERY PETROLEUM, L.L.C. 046950 EL PASO NATURAL GAS 2 CHAPA, EAST (11084) TIDEWATER MINERALS CORPORATION 084294 EL PASO NATURAL GAS 5 CHAPA, EAST (9800) TIDEWATER MINERALS CORPORATION 126974 EL PASO NATURAL GAS 10 CHAPA, WEST (LULING) TIDEWATER MINERALS CORPORATION 144228 EL PASO NATURAL GAS 11 CHAPA, WEST (LULING) TIDEWATER MINERALS CORPORATION 174997 EL PASO NATURAL GAS -C- 1C CLEGG (LULING 9600) CAMCO SALTWATER TRANSPORT,L.L.C. 091843 EL PASO NATURAL GAS UNIT 6 CHAPA, EAST (12,400) A + INVESTMENTS A TEXAS LLC 172853 ELEANOR 1 SALEM (3425) BEACH OIL & GAS, INC. 178459 ELENA HAUN GAS UNIT 2 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 233519 ELENA HAUN GAS UNIT 3 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 233522 ELIZABETH GAS UNIT 2 SPEARY (ROEDER 9100) OKIE OPERATING COMPANY, LTD. 220609 ELIZABETH GAS UNIT 3 SPEARY (ROEDER 9100) OKIE OPERATING COMPANY, LTD. 220623


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ ELIZONDO 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267756 ELIZONDO 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268838 ELLIOTT UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268798 ELLIS 2 PLACEDO, EAST (5840) ACOCK/ANAQUA OPERATING CO., LP 262454 ELLROY KARNEI UNIT 3 LIONS (CORONA CONSOLIDATED) TECPETROL OPERATING LLC 215100 ELLROY KARNEI UNIT 3 LIONS (CORONA CONSOLIDATED) TECPETROL OPERATING LLC 215566 ELLROY KARNEI UNIT 4 LIONS (CORONA CONSOLIDATED) TECPETROL OPERATING LLC 224969 ELS 1 C CABEZA CREEK (PETTUS) NELSON, JAMES L. 219274 ELS 1 T CABEZA CREEK (YEGUA) NELSON, JAMES L. 219277 ELS, EMIL 1 BOYCE (WILCOX C SLICK) NELSON, JAMES L. 000980 ELS, EMIL 2 BOYCE (RECKLAW) NELSON, JAMES L. 000964 ELS, EMIL 2 BOYCE (WILCOX C SLICK) NELSON, JAMES L. 100333 ELS, EMIL 3 BOYCE (PETTUS) ADVANTAGE OIL & GAS, INC. 076174 ELS, HENRY 1 MELROSE (SLICK-WILCOX) NELSON, JAMES L. 038984 ENCINA 1 DALLAS HUSKY (WILCOX 9000) WELDER EXPLORATION & PROD., INC. 201724 ENCINA 2 DALLAS HUSKY (WILCOX 9000) WELDER EXPLORATION & PROD., INC. 206598 ENCINA 3 DALLAS HUSKY (WILCOX 9000) WELDER EXPLORATION & PROD., INC. 227686 ENGELKING UNIT 2 TULETA, WEST (9570) BRITANCO, L.L.C. 125807 ENGLAND 1 WOLFSDORF (MIOCENE 1225) EXPRESS OIL CO. 199923 ENKE 1 WEESATCHE, NE. (HOLT FB A) RAMTEX ENERGY LLC 165844 ERHARD 1 WORD, N. (8100) TRIO CONSULTING & MANAGEMENT,LLC 233653 ERIC & DEREK 2 BURNELL (PETTUS 3500) WELDER EXPLORATION & PROD., INC. 198535 ERICSON CLARK 1Y MAXINE, EAST (8400) ARRINGTON OIL&GAS OPERATING LLC 223255 ERNA P. BENHAM GAS UNIT 6 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 253071 ERNA P. BENHAM GAS UNIT 7 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 250761 ERNA P. BENHAM GAS UNIT 8 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 244748 ERP, W. E. 1 PLUMMER-WILCOX (RECKLAW) LT OIL LLC 043178 ERP, W. E. 4 PLUMMER-WILCOX (RECKLAW) LT OIL LLC 059029 ERP, W. E. 5 PLUMMER-WILCOX (RECKLAW) LT OIL LLC 043611 ERP, WILL E. 1 L ELLA BORROUM (M-7) FRIO DRILLING, INC. 035853 ESCONDIDO CREEK 2 KAWITT (YEGUA) PATTERSON ENERGY CORPORATION 257117 ESCONDIDO CREEK 3 KAWITT (YEGUA) PATTERSON ENERGY CORPORATION 264510 ESCONDIDO CREEK GAS UNIT 1 SPEARY (MYHAND 8400) STATOIL TEXAS ONSHORE PROP LLC 220854 ESCONDIDO CREEK GAS UNIT 1 1 KAWITT (YEGUA) PATTERSON ENERGY CORPORATION 246135 ESCONDIDO CREEK GAS UNIT 1 1X SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 258143 ESCONDIDO CREEK GAS UNIT 1 B 3H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 266854 ESCONDIDO CREEK RIVER RANCH GU 1 1 SPEARY (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 254915 ESCONDIDO CREEK-EVANGELINE (SA) D 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 271700 ESKEW EAST 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 258137 ESKEW EAST 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272125 ESKEW EAST 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 276095 ESKEW NORTH UNIT 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 256977 ESKEW WEST UNIT 1 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 258559 ESKEW WEST UNIT 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 254315 ESKEW WEST UNIT 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 269841 ESTELLE ROLF GAS UNIT NO 2 2 KENEDY, SW. (EDWARDS) PIONEER NATURAL RES. USA, INC. 103874 ESTELLE ROLF GAS UNIT NO 2 3 KENEDY, SW. (EDWARDS) PIONEER NATURAL RES. USA, INC. 120698 ESTELLE ROLF GAS UNIT NO. 2 5 KENEDY, SW. (EDWARDS) PIONEER NATURAL RES. USA, INC. 131972 ESTELLE ROLF GAS UNIT NO. 2 6 KENEDY, SW. (EDWARDS) PIONEER NATURAL RES. USA, INC. 142027 ESTHER JACOBS GAS UNIT # 2 2 HOPE (WILCOX MASSIVE) CRIMSON EXPLORATION OPER., INC. 188969 ESTHER JACOBS GAS UNIT #1 1 HOPE (WILCOX MASSIVE) CRIMSON EXPLORATION OPER., INC. 176771


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ ESTHER JACOBS GAS UNIT #1 2 HOPE (WILCOX MASSIVE) CRIMSON EXPLORATION OPER., INC. 202894 ESTHER JACOBS GAS UNIT #2 1 HOPE (WILCOX MASSIVE) CRIMSON EXPLORATION OPER., INC. 182037 ETTA 1 BERCLAIR (LULING) CML EXPLORATION, LLC 264882 ETZLER GAS UNIT 1 LAVACA (AUSTIN CHALK, LOWER) PIONEER NATURAL RES. USA, INC. 259602 ETZLER, A. GAS UNIT 1 HALLETTSVILLE, SOUTH (ANDERSON) CAPITAL STAR OIL & GAS, INC. 077411 EVANGELINE GAS UNIT 1 1 SPEARY (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 249492 EVANS 1 YOUGEEN (FRIO 3610) WELDER EXPLORATION & PROD., INC. 269854 EVANS 1 YOUGEEN (5500) WELDER EXPLORATION & PROD., INC. 262233 EVANS 2 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 264283 EWALT, MARGIE 1 LITTLE JOHN (3970) ADVANTAGE OIL & GAS, INC. 087136 EYHORN GAS UNIT 1 1 KAWITT (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 257673 EYHORN GAS UNIT 1 4 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 259630 EYHORN GAS UNIT 1 C 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 266141 EYHORN-BEGO TRUST (SA) D 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 276384 EYHORN-BEGO TRUST (SA) E 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 272590 F. MALEK UNIT D 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 257514 F. MALEK UNIT D 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270443 F. MALEK UNIT L 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 264260 F. MALEK UNIT L 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266297 F. MALEK UNIT L 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270418 F. MALEK UNIT M 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 263578 F. MALEK UNIT R 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 263541 F. MALEK UNIT R 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270478 F. MALEK UNIT U 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266265 F. MALEK UNIT Y 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266478 F. SOBOTIK GAS UNIT # 1 5 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 167878 F. SOBOTIK GAS UNIT #1 3 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 165406 F. SOBOTIK GAS UNIT #1 4 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 167950 F.V.W. HEARD 6 GRETA (0-5-B) ACOCK/ANAQUA OPERATING CO., LP 216126 FAGAN 1 MCFADDIN (3600) GREAT BAY OPERATIONS, LLC 078390 FAGAN 4 MCFADDIN (3200) GREAT BAY OPERATIONS, LLC 234401 FAGAN 18 MCFADDIN (2750) GREAT BAY OPERATIONS, LLC 258978 FAGAN 18 MCFADDIN (5400 UPPER) GREAT BAY OPERATIONS, LLC 252334 FAGAN 20 MCFADDIN (5050) GREAT BAY OPERATIONS, LLC 272718 FAGAN 20 MCFADDIN (5510) GREAT BAY OPERATIONS, LLC 263017 FAGAN 32 MCFADDIN (3200) GREAT BAY OPERATIONS, LLC 251945 FAGAN 33 MCFADDIN (3200) GREAT BAY OPERATIONS, LLC 256502 FAGAN -L- 6 FAGAN (3000) ANDERSON OIL LTD. 054618 FAGAN -M- 6 FAGAN (2100) ANDERSON OIL LTD. 123551 FAGAN -N- 2 FAGAN (2100) ANDERSON OIL LTD. 090951 FAGAN "A" A 4 MCFADDIN (5400 UPPER) GREAT BAY OPERATIONS, LLC 253009 FAGAN C 13 MCFADDIN (5150) GREAT BAY OPERATIONS, LLC 274293 FAGAN C 13 MCFADDIN (5300) GREAT BAY OPERATIONS, LLC 274194 FAGAN EST. -M- 2 FAGAN (2900) ANDERSON OIL LTD. 051442 FAIN-BECK GAS UNIT 1 SAN DOMINGO (7700) SYDSON ENERGY, INC. 004068 FALKS GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 268722 FALKS GAS UNIT 1 D 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 272372 FALKS GAS UNIT 1 D 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 275116 FALKS GAS UNIT 1 D 3H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 275121 FARISH, W. S. 1 WILDCAT CORENERGY OPERATING GROUP, LLC 176368 FARRIS GAS UNIT 2 MEYERSVILLE (MASSIVE IV) CHESAPEAKE OPERATING, L.L.C. 202861


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ FAT TIRE 1 WORD, N. (EDWARDS) LGDC CORPORATION 239499 FAVOR 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269534 FEE 2 CLARKSON (FRIO 5050) SHAY, MARY AGNES POWER 033946 FENNER 1 BRUSHY CREEK (FRIO 4200) COASTLINE EXPLORATION, INC. 256879 FENNER UNIT 1 THE PRINCE (YEGUA) PPC OPERATING COMPANY LLC 262870 FENNER-BRIDGE FEE 1 FENNER (4120) BREITBURN OPERATING L.P. 141934 FERRELL "A" A 9 RAMIRENA (Y- 5) MOSBACHER ENERGY COMPANY 206758 FERRELL, D. L. 1 CANDACE (2070) CORENERGY OPERATING GROUP, LLC 174803 FERRELL, D. L. 2 MOLINA (YEGUA) CORENERGY OPERATING GROUP, LLC 181497 FERRELL, I. A 9 RAMIRENA (Y-15A) MOSBACHER ENERGY COMPANY 203156 FERRY 1 YOAKUM, SE. (8900) BASIC ENERGY SERVICES, L.P. 205588 FIELDS KLOTH 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266631 FIELDS UNIT 1H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 272180 FIELDS UNIT 2H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 272432 FIELDS UNIT 3H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 274668 FIELDS UNIT 4H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 274669 FIFER GAS UNIT 4 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 228146 FIFER UNIT 1 BIG OAK (WILCOX 10500) HILCORP ENERGY COMPANY 203219 FIFER UNIT 2 BIG OAK (WILCOX 10500) HILCORP ENERGY COMPANY 207791 FIMBEL 1 TELFERNER, EAST (4400) ALTA MESA SERVICES, LP 203514 FIMBEL, EDWIN 2 EDWIN FIMBEL (3500 FRIO) CORDELE DEVELOPMENT CORPORATION 128061 FIMBEL, MARION & LA VERNIA JUNE 5 EDWIN FIMBEL (3500 FRIO) CORDELE DEVELOPMENT CORPORATION 216498 FIMBEL, MARION & LAVERNIA JUNE 1 EDWIN FIMBEL (3500 FRIO) CORDELE DEVELOPMENT CORPORATION 164667 FIMBEL, MARION & LAVERNIA JUNE 2 TELFERNER, NORTH (1330) CORDELE DEVELOPMENT CORPORATION 196592 FIMBEL, MARION & LAVERNIA JUNE 7 TELFERNER, NORTH (3600 FRIO) CORDELE DEVELOPMENT CORPORATION 227350 FIMBLE, EDWIN C. 1 TELFERNER, NORTH (1150) CORDELE DEVELOPMENT CORPORATION 211146 FINGER ESTATE 1 HOLZMARK (PETTUS) CONTINENTAL EXPLORATION, L.L.C. 235431 FINNEY-BARKER UNIT 1H DE WITT (EAGLE FORD SHALE) MARATHON OIL EF LLC 270337 FINNEY-BARKER UNIT 2H DE WITT (EAGLE FORD SHALE) MARATHON OIL EF LLC 270332 FIRST NATIONAL BANK OF GOLIAD 2 CABEZA CREEK, S. (RECKLAW 7700) BLUE WING ENERGY, INC. 044420 FISHBECK 1 WORD, N. (7600) TRIO CONSULTING & MANAGEMENT,LLC 269116 FISHBECK GAS UNIT 1 NURSERY, S. (3560) COX & COX PRODUCTION CO. 140761 FISHER A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267627 FISHER B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267703 FISHER C 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 266862 FISSON TRUST GAS UNIT 1 NURSERY (3500) BLUE WING ENERGY, INC. 262068 FITZHENRY 1R ESPERANZA (10560) XTO ENERGY INC. 269865 FITZHENRY, W. B. HEIRS GAS UNIT 1 HOPE (14,000) CANTERA OPERATING, LLC 202615 FLAME GAS UNIT 1 PAWNEE (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 245447 FOEGELLE G. U. 1 PANNA MARIA (EDWARDS) PPC OPERATING COMPANY LLC 033376 FOESTER 2 MAGNOLIA BEACH (9300) C & E OPERATING, INC. 211263 FOESTER SHILLING 1 MAGNOLIA BEACH (7800) C & E OPERATING, INC. 249280 FOJTIK, ED 1 SEELEY (FRIO) WESTERN OIL DEVELOPMENT COMPANY 032767 FOLEY 1 S SUNSET (MASSIVE-WILCOX) SOUTHERN RESOURCE COMPANY 254602 FORD GAS UNIT NO 1 1 YOAKUM (EDWARDS) PIONEER NATURAL RES. USA, INC. 248930 FORSHAGE-HOWELL UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268772 FORSHAGE-HOWELL UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 266362 FORSHAGE-HOWELL UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268771 FORT WORTH NATL. BK GU #1 1 BUCHEL (EDWARDS) PIONEER NATURAL RES. USA, INC. 066437 FOSTER 1 CANNAN, SOUTH (10100 WILCOX) WELDER EXPLORATION & PROD., INC. 230267 FOSTER 1 TULETA-WILCOX, SOUTH (LULING) BETA OIL CORPORATION 153420


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ FOSTER UNIT 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 265038 FOSTER UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 265037 FOSTER, WM. C. 3 MOONEY, E.(YEGUA 5450) CICO OIL & GAS COMPANY 085771 FOSTERS 1 TIGER BEND (WILCOX) LGDC CORPORATION 229787 FOUR WAY RANCH 12 LOLITA, DEEP (MCMAHAN ZONE) MCGOWAN WORKING PARTNERS, INC. 252944 FOUR WAY RANCH 25 LOLITA, DEEP (7000 ZONE) MCGOWAN WORKING PARTNERS, INC. 254842 FOWLKES UNIT 1 DAVO (FRIO 2970) CORONADO MINERALS, LLC 216741 FOX, J. E. ET AL 6 CAESAR, SOUTH (5650) RINCON PETROLEUM CORPORATION 184610 FOX, MICHAEL -B- 4 BLANCONIA (4700) MAGNUM PRODUCING, LP 112641 FOX, W. E. 1 REFUGIO-FOX (3500 A) DILLARD OIL COMPANY 003892 FOX, W. J. 1 REFUGIO-FOX (5000) ANDERSON OIL LTD. 003898 FOX, W. J. 3 REFUGIO-FOX (3100) COLOMA OIL & GAS CORP. 003884 FOX, W. J. 12 GRETA (L- 5) HILCORP ENERGY COMPANY 001819 FOX, W. J. "A" A 40 REFUGIO-FOX (1675) HILCORP ENERGY COMPANY 207253 FOX, W. J. "B" 30 GRETA (L- 5-A) HILCORP ENERGY COMPANY 228277 FOX, W. J. "B" 38 HYNES RANCH (FB-50) HILCORP ENERGY COMPANY 216253 FRANCIS 1 ARNECKEVILLE (YEGUA 4870) A & D EXPLORATION COMPANY 211173 FRANCIS 2 ARNECKEVILLE (YEGUA 4910) DEWBRE PETROLEUM CORPORATION 219452 FRANCIS WILSON 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 267659 FRANEK 1 NOODLERONI (FRIO) WALLIS ENERGY, INC. 151108 FRANK GAS UNIT 1 DRY HOLLOW (WILCOX MASSIVE) CANTERA OPERATING, LLC 240607 FRANK GU 1 DRY HOLLOW (WILCOX MIDDLE) CANTERA OPERATING, LLC 273604 FRANK GU 2 DRY HOLLOW (WILCOX MASSIVE) CANTERA OPERATING, LLC 247347 FRANK GU 3 DRY HOLLOW (WILCOX MASSIVE) CANTERA OPERATING, LLC 246349 FRANK GU 4 DRY HOLLOW (WILCOX MASSIVE) CANTERA OPERATING, LLC 254864 FRANK MALEK 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271162 FRANK MALEK 02 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268940 FRANK MALEK 03 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268943 FRANK MALEK 04 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269687 FRANK MALEK 05 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269679 FRANK MALEK 05 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 273110 FRANK MALEK 05 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 272382 FRANK MALEK 05 04H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 273021 FRANK MALEK 05 05H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 272532 FRANK MALEK 06 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 270302 FRANKE 1 JOBAR (YEGUA) MODERN EXPLORATION, INC. 236572 FRANKE UNIT 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 264903 FRANKE UNIT 1H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 266736 FRANKE UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 259887 FRANKE UNIT 2H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 268223 FRANKE UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 273078 FRANKE UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 273079 FRANKE UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 273081 FRANKE UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 274278 FRANKE UNIT AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 274360 FRANKE 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269562 FRANKE-JOHNSON UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268958 FRANKE-JOHNSON UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268780 FRANKE, WAYNE 1 MAETZE (3145) NELSON, JAMES L. 176240 FRANKLIN 1 BIG OAK, N. (COOK MOUNTAIN) LIGHTNING OIL COMPANY 200749 FRANKLIN-VANCE UNIT 1 TEXANA, NORTH (FRIO 6900) MISSION RIVER SYSTEMS, INC. 149069


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ FRANZ UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266699 FRANZ UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266835 FRANZ UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 276665 FRANZ UNIT A 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 276664 FRED BUCHEL GAS UNIT 1 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 237207 FRED BUCHEL GAS UNIT NO 1 2 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 239214 FRED BUCHEL GAS UNIT NO 1 3 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 246339 FREE UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 264896 FREE UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275765 FREE UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275768 FREE UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275769 FREE UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275771 FREELAND, J. M. 6 PETTUS (2200) WALLIS ENERGY, INC. 163165 FREELAND, J. M. 9 L COSDEN, WEST (WILCOX 8300) WALLIS ENERGY, INC. 037711 FREEMAN 1 FORT MERRILL (YEGUA) QUORUM ENERGY COMPANY 244339 FREEMAN 1 SPEAKS, SW. (SIMPSON) XTO ENERGY INC. 181727 FREEMAN 2 FT. MERRILL, NORTH (11800) QUORUM ENERGY COMPANY 242634 FREEMAN 2 SPEAKS (12700 WILCOX) CANTERA OPERATING, LLC 216548 FREEMAN 4 SPEAKS, SW. (RAINBOW) XTO ENERGY INC. 185348 FREEMAN 4 SPEAKS, SW. (SIMPSON) XTO ENERGY INC. 185236 FREEMAN 5 SPEAKS, SW. (SIMPSON) XTO ENERGY INC. 177964 FREEMAN 6 SPEAKS, SW. (2500) CANTERA OPERATING, LLC 226857 FREEMAN 8 SPEAKS, SW. (SIMPSON) XTO ENERGY INC. 180374 FREEMAN 9 SPEAKS, SW. (RAINBOW) XTO ENERGY INC. 191255 FREEMAN 12 SPEAKS, SW. (SIMPSON) XTO ENERGY INC. 228183 FREEMAN 13 SPEAKS, SW. (RAINBOW) XTO ENERGY INC. 270823 FREEMAN 14 SPEAKS, SW. (RAINBOW) XTO ENERGY INC. 254390 FREEMAN, C. N. 2R FREEMAN (PETTUS 4600) KOVAR OPERATING, LLC 197344 FREEMAN, LYNELL 1 SPEAKS (16250 WILCOX) CANTERA OPERATING, LLC 250879 FREEMEN 2 SPEAKS, SW. (RAINBOW) XTO ENERGY INC. 177539 FRENCH ESTATE 1 SPEAKS, SW. (RAINBOW) CRIMSON EXPLORATION OPER., INC. 173382 FRENCH ESTATE 3 SPEAKS, SW. (RAINBOW) CRIMSON EXPLORATION OPER., INC. 192199 FRENCH HEIRS 1 SPEAKS, SW. (13800) DEWBRE PETROLEUM CORPORATION 250118 FRERICHS, F. L. 2 SHERIFF, WEST (FRIO 9000) TEXAS INDEPENDENT EXPLOR LTD. 139303 FREUDE UNIT 1 YOAKUM (8600) UNIT PETROLEUM COMPANY 141028 FRIAR-THOMAS 1 CARTER THOMAS (THIRD YEGUA) PACE OIL AND GAS COMPANY 163878 FRIAR-THOMAS G. U. #2 1 FRIAR RANCH, S. (CONSOLIDATED) D AND J OPERATING, LLC 174683 FRIAR-THOMAS G.U. #2 2 FRIAR RANCH, S. (CONSOLIDATED) RIO BRAVO EXPL. & PROD. CO. 175941 FRIAR, A. 5 HELEN GOHLKE, W. (YEGUA LOWER) CAMOIL, INC. 148215 FRIAR, A. 7 HELEN GOHLKE ( YEGUA K) CAMOIL, INC. 152585 FRIAR, ALFRED "A" 1 FRIAR RANCH, S. (CONSOLIDATED) RINCON PETROLEUM CORPORATION 216135 FRIAR, THOMAS 1 HELEN GOHLKE ( YEGUA K) CAMOIL, INC. 155170 FRIAR, THOMAS 2 HELEN GOHLKE ( YEGUA K) CAMOIL, INC. 172084 FRIEDEL A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267638 FRIEDEL B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267921 FRIEDRICHS GAS UNIT 1 FLINTSTONE (CRETACEOUS CHALK) PIONEER NATURAL RES. USA, INC. 254465 FRIEDRICHS GAS UNIT NO. 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 266419 FRIEDRICHS-HARSDORFF 1 ARNECKEVILLE (WILCOX A 8150) STUART, H. A. 000783 FRIEDRICKS, O. J. 1 WILHELM (2180) REDWOOD OPERATING, INC. 046504 FRITZ WEISE GU "A" 2 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 233951 FROMME 1 BRANDT (WILCOX 9800) NELSON, JAMES L. 135925


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ FROMME-VOGT 1 VICTORIA (4500) WOOLDRIDGE OIL & GAS 004590 FROMME, A A 2 WEESATCHE, SOUTH (2200) SUPERIOR OIL & GAS INVT, L.L.C. 160514 FROMME, L. C. 1 GOLIAD, NORTH (2650) GINTHER, WARREN & GINTHER 001727 FRUEDE 2H YOAKUM (EDWARDS) UNIT PETROLEUM COMPANY 248624 FT. WORTH NATIONAL BANK #3 HMTF 3 BUCHEL (EDWARDS) PIONEER NATURAL RES. USA, INC. 144645 FUCHS, BEATRICE 1 GUN POINT, S. (WILCOX, LOWER) URBAN OIL & GAS GROUP, LLC 237204 FULL SAIL 1 WORD, N. (EDWARDS) LGDC CORPORATION 230520 FULLER 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 223745 FULLER - NEWTON, ET AL 1 HORDES CREEK (WILCOX CONS.) MILAGRO EXPLORATION, LLC 219200 FULLER-NEWTON ET AL 2 WAYNO BUENO (WILCOX MASSIVE) MILAGRO EXPLORATION, LLC 220588 FUNK 1 MAETZE (2100) DIRNETT, INC. 221808 FUNK 2 MAETZE (3280) DIRNETT, INC. 230605 FUNK 3 MAETZE, W. (FRIO 3200) DIRNETT, INC. 195678 FUNK, ET AL GAS UNIT 1A GOLIAD, WEST (10,600 SD) OAK ENERGY, LLC 267082 FVW HEARD 3 GRETA (F-3 WEST) ACOCK/ANAQUA OPERATING CO., LP 207785 G. J. TIPS GAS UNIT 1 KAWITT (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 079465 G.B.R.A. 2 COLLETOVILLE CREEK (VICKS. 4100) TRIO CONSULTING & MANAGEMENT,LLC 233589 GABRIEL, F. G. 1A RICHIE (4150) MARWELL PETROLEUM LTD PARTNRSHIP 110525 GADDIS-WORD GAS UNIT 1 WILDCAT NEW HORIZON INVESTMENTS LTD. 214508 GAIDA A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266759 GALLINIPPER UNIT 2801 LAVACA BAY (F-39) NEUMIN PRODUCTION COMPANY 263990 GALLINIPPER UNIT 3602 LAVACA BAY (F-43) NEUMIN PRODUCTION COMPANY 250031 GALLINIPPER UNIT 3603 LAVACA BAY (F-44) NEUMIN PRODUCTION COMPANY 244784 GALLINIPPER UNIT 3604 LAVACA BAY (F-46) NEUMIN PRODUCTION COMPANY 247105 GALLINIPPER UNIT 3605 LAVACA BAY (F-40-B) NEUMIN PRODUCTION COMPANY 244384 GALLINIPPER UNIT 3704 LAVACA BAY (F-45) NEUMIN PRODUCTION COMPANY 250579 GAMBLE GULLY GAS UNIT #1 1 GAMBLE GULLY (UP. SLICK SD.) DIRKS PETROLEUM COMPANY 082391 GAMBLE GULLY GAS UNIT #1 2 GAMBLE GULLY (UP. SLICK SD.) DIRKS PETROLEUM COMPANY 138151 GAMBLE GULLY GAS UNIT #5 1 GAMBLE GULLY (LULING) DIRKS PETROLEUM COMPANY 185068 GAMBLE GULLY GAS UNIT #5 2 L GAMBLE GULLY, SW. (7100) DIRKS PETROLEUM COMPANY 229444 GAMBLE GULLY GAS UNIT #5 2 S GAMBLE GULLY (SLICK SAND) DIRKS PETROLEUM COMPANY 228148 GANO GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 261758 GANTT, ADA E. 1A GANTT (COOK MTN) VICTOR OIL & GAS CORP. 072636 GARCITAS CREEK GU 1 INEZ (FRIO 5200) ALTA MESA SERVICES, LP 207825 GARCITAS RANCH 2 SALEM (3680) HOLLIMON OIL CORPORATION 207958 GARCITAS RANCH 6 SALEM (3200) HOLLIMON OIL CORPORATION 219798 GARCITAS RANCH 7 C SALEM (3200) HOLLIMON OIL CORPORATION 259770 GARCITAS RANCH 7T SALEM (3400) HOLLIMON OIL CORPORATION 259771 GARCITAS RANCH "A" 2 GARCITAS CREEK (6032) HOLLIMON OIL CORPORATION 201436 GARDNER 1 CAESAR, SOUTH (5650) ANDERSON OIL LTD. 267694 GARNER 1 WILDCAT REPUBLIC RESOURCES, LLC. 252933 GARNER 1 MONT (WILCOX 10,900) TRIO CONSULTING & MANAGEMENT,LLC 254215 GARRETT 1 KEMPER, EAST (3120) GEISER OPERATING, INC. 275847 GARRETT 1 SUGARKANE (CRETACEOUS) KARIS RESOURCES, LLC 266923 GARRETT 1-T DRY HOLLOW (WILCOX DAGG, NE) MILAGRO EXPLORATION, LLC 150148 GARRETT 1-U DRY HOLLOW, NORTH (11,024) MILAGRO EXPLORATION, LLC 147786 GARRETT GAS UNIT 2H YOAKUM (EDWARDS) ABRAXAS PETROLEUM CORPORATION 180883 GARVEL 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 264459 GARVEL 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268778 GARVEL 01 03H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268946 GARVEL 01 04H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268642


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ GARY-ENGLAND GAS UNIT 1 WARMSLEY (10,350) LRE OPERATING, LLC 230774 GARY-ENGLAND GAS UNIT 1 WARMSLEY, S. (LOWER MIGURA) LRE OPERATING, LLC 255351 GARZA UNIT 1 INEZ (YEGUA 9060) MARQUEE CORPORATION 269102 GAS UNIT #1 (F-2 SAND) 2 SHERIFF (CONSOLIDATED) FORMATION RESOURCES LLC 170016 GAUNTT, RUBY 1 C MONSON (QUEEN CITY) MILAGRO EXPLORATION, LLC 050809 GAUNTT, RUBY 3 MONSON (QUEEN CITY) MILAGRO EXPLORATION, LLC 212777 GAUS A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266824 GAYLE 1 WILDCAT BLACKBRUSH O & G, LLC 206069 GAYLE UNIT 1 BEGO (CONSOLIDATED) CODY ENERGY LLC 210529 GAYLE UNIT 2 BEGO (CONSOLIDATED) CODY ENERGY LLC 212486 GAYLE UNIT 3 WILDCAT CODY ENERGY LLC 231737 GAYLE, ALBERTA 12-D WILDCAT KD ENERGY, LLC 170275 GAYLE, B. B. 1 HEINZEVILLE (RECKLAW) HILCORP ENERGY COMPANY 197432 GAYLE, B. B. 10 CLIP (FRIO UPPER) J&G OIL & GAS 145202 GB 1 NURSERY, S. (4130) CML EXPLORATION, LLC 254524 GEFFERT GAS UNIT NO. 2 1 A FANT, S. (WILCOX 11300) LRE OPERATING, LLC 112470 GEFFERT GAS UNIT NO. 2 2 CHARLINE (FORNEY) LRE OPERATING, LLC 225242 GEFFERT, ROBERT 4 CLAYTON, NE. (1100) GREATER SOONER HOLDINGS, INC. 147272 GENTRY 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267412 GEO - HOPE 5 HOPE (FRIO 3079) B.P. PRODUCTIONS INC. 192492 GEO-GOLDENROD 1 WILDCAT GEONATURAL RESOURCES, INC. 259518 GEO-GOLDENROD 3 GRACE (FRIO 4450) VIPER S.W.D., LLC 202579 GEO-GOLDENROD 6 WILDCAT GEONATURAL RESOURCES, INC. 207266 GEO-GOLDENROD 7 ELBERT GOFF (3700) VIPER S.W.D., LLC 204123 GEO-GOLDENROD 02 WILDCAT GEONATURAL RESOURCES, INC. 207267 GEO-GOLDENROD 04 COUSIN (4100) PITCHFORK OIL & GAS, INC. 202573 GEO-GOLDENROD 05 MORALES (4360) GEONATURAL RESOURCES, INC. 202574 GEO-GOLIAD 1 MARSHALL, EAST (YEGUA 5300) GEONATURAL RESOURCES, INC. 196822 GEO-GOLIAD 04 MAETZE (5580 YEGUA) DIRNETT, INC. 197343 GEO-HOPE 1 HOPE, NE. (3100) B.P. PRODUCTIONS INC. 190690 GEO-HOPE 2 HOPE (VICKSBURG 3200) B.P. PRODUCTIONS INC. 190683 GEO-HOPE 3 HOPE (MIOCENE 2500) B.P. PRODUCTIONS INC. 190685 GEO-HOPE 4 HOPE (MIOCENE 3300) GEONATURAL RESOURCES, INC. 192499 GEORGE WEST ESTATE 6 L FANT (WILCOX 10200) PRIDE ENERGY COMPANY 104082 GEORGE WEST ESTATE 6 U FANT (WILCOX 9500) PRIDE ENERGY COMPANY 104083 GEORGIA HOFF, ET. AL. 2 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 200771 GEORGIA MAE GRAHMANN GAS UNIT 2 1 JANSKY (10350) PIONEER NATURAL RES. USA, INC. 101606 GEP, LP / GOFF MINERAL TRUST 4 ELBERT GOFF (3700) VIPER S.W.D., LLC 252902 GEP, LP/GOFF MINERAL TRUST 1 ELBERT GOFF (FRIO 4230) VIPER S.W.D., LLC 249509 GEP, LP/GOFF MINERAL TRUST 5 ELBERT GOFF (FRIO 4230) VIPER S.W.D., LLC 249711 GEP,LP/GOFF MINERAL TRUST 3 ELBERT GOFF (3700) VIPER S.W.D., LLC 249506 GERALD 1 BRUSHY CREEK (WILCOX CONS.) JAMEX, INC. 224841 GERALD 41 MACARONI (FRIO) CRIMSON EXPLORATION OPER., INC. 150801 GERALD BURKE SCHULZ 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269392 GERALD BURKE SCHULZ 02 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269645 GERDES 1 JANSKY (10600) ESCONDIDO PETROLEUM COMPANY, INC 206473 GERDES 1 MONT (WILCOX 10640) TRIO CONSULTING & MANAGEMENT,LLC 207663 GERDES "A" UNIT 1 WORD (8900) TRIO CONSULTING & MANAGEMENT,LLC 222462 GERDES UNIT 1H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 271792 GERDES UNIT 2H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 272177 GERDES UNIT 3H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 275125


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ GERDES UNIT 4H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 275126 GERDES, G.H. JR. UNIT #1 1 HALLETTSVILLE, EAST (9800) ESCONDIDO PETROLEUM COMPANY, INC 124792 GERHARDT & OTTILLIA BRUNS 2W RIC-JOHN (3250) TX ENERGY SERVICES, LLC 224709 GERLICH GAS UNIT 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 101286 GERLICH GAS UNIT 2 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 106483 GERLICH GAS UNIT 4 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 167415 GERLICH GAS UNIT 5 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 166989 GERLICH WILCOX GAS UNIT 3 WILDCAT CAPITAL STAR OIL & GAS, INC. 163350 GFL/CRUZ 0001GF PANNA MARIA (CARRIZO) EARTHWATER SOLUTIONS LLC 269322 GIBBS GAS UNIT 1 WEBER (GIBBS-MIOCENE) OMEGA ENERGY, LLC 139809 GIESE 2 NURSERY (3500) RINCON PETROLEUM CORPORATION 232280 GIESE 4 NURSERY (2640) RINCON PETROLEUM CORPORATION 261932 GIESE 4 NURSERY (3200) RINCON PETROLEUM CORPORATION 239483 GILL RANCH 1 BEEVILLE, SW. (PETTUS, LO.) SV ENERGY COMPANY, LLC 269523 GILL 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268941 GILL, CLAUDIA 2 TULETA, WEST (HOCKLEY 3100) REPUBLIC RESOURCES, LLC. 184625 GILL, CLAUDIA P. 1 TULETA, WEST (VICKSBURG G) REPUBLIC RESOURCES, LLC. 188044 GILLETT 1 COQUAT (12700) MILAGRO EXPLORATION, LLC 195480 GILLETT 2 COQUAT (12700) MILAGRO EXPLORATION, LLC 202653 GILLIGAN 1 VIRGIL (YEGUA 5350) WELDER EXPLORATION & PROD., INC. 256149 GILLIGAN 2 VIRGIL (YEGUA 5350) WELDER EXPLORATION & PROD., INC. 262984 GINGERICH, GEORGE C. 1D DIRKS (1850) REPUBLIC RESOURCES, LLC. 190456 GINGERICH, GEORGE C. 2D TULETA, WEST (HOCKLEY 3100) REPUBLIC RESOURCES, LLC. 112508 GIPS 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 260289 GIPS, EDWIN 1 YORKTOWN (KESELING) POOL OPERATING CORPORATION 218109 GISLER-ESCAMILLA 1ST RUNGE, E. (ROEDER) BELLOWS OPERATING CO., L. C. 239818 GLASER 1 MAYO (5655) JONES & ALLEN 120181 GLAZE, ROSS B ET AL 2 WILDCAT OSYKA PRODUCING COMPANY, INC. 243639 GLAZE, ROSS B. ET AL 1-D SPEAKS, SW. (LOWER MIOCENE 2400) OSYKA PRODUCING COMPANY, INC. 164678 GLEINSER 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 229151 GLENEAGLES 1 FENNER, EAST (FRIO 4350) O'TOOL OIL & GAS, LLC 221327 GLOOR 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 266423 GODFREY 2 HOUDMAN (WILCOX 8200) KEBO OIL & GAS, INC. 256247 GODFREY 3 HOUDMAN (WILCOX 8200) KEBO OIL & GAS, INC. 261734 GODFREY 4 HOUDMAN (WILCOX 8200) KEBO OIL & GAS, INC. 264518 GODFREY BRYSCH GAS UNIT 2 1 GEORGE WEST, WEST (10500) LRE OPERATING, LLC 096618 GODFREY NELSON GAS UNIT 1 HOUDMANN-BUXKAMPER (9950) KEBO OIL & GAS, INC. 248652 GODFREY, PAWLIK GAS UNIT 2 L MAXINE, EAST (MATULA) FAULCONER, VERNON E., INC. 117969 GODFREY, PAWLIK GAS UNIT 2 U MAXINE, EAST (8700) FAULCONER, VERNON E., INC. 119467 GOEBEL, O. A. HEIRS 2 GOEBEL (9600) KALER ENERGY CORP. 247301 GOEHRING 1 BRANDT, N. (REKLAW) NELSON, JAMES L. 125495 GOEHRING, ROBERT F. 1 FIFTEEN MILE CREEK (WILCOX) MILAGRO EXPLORATION, LLC 238153 GOEHRING, ROBERT F. 3 BRANDT, N. (REKLAW) NELSON, JAMES L. 129349 GOFF 1 BRUSHY CREEK (WILCOX CONS.) JAMEX, INC. 212052 GOFF 2 BRUSHY CREEK (WILCOX CONS.) JAMEX, INC. 213895 GOFF 2 TOPSY (3900) VIPER S.W.D., LLC 198459 GOFF A 1 BRUSHY CREEK (WILCOX CONS.) JAMEX, INC. 216113 GOFF "A" 1 ELBERT GOFF (3400) SIGNAL OIL AND GAS COMPANY 213991 GOFF MINERAL TRUST 1 GOLDENROD CREEK (GOFF) J&G OIL & GAS 184797 GOFF MINERAL TRUST 02 GOLDENROD CREEK (GOFF) CAMOIL, INC. 184459 GOFF UNIT 2 WEARDEN RANCH (3750) VIPER S.W.D., LLC 188633


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ GOHLKE DEEP GAS UNIT 1 KULAWIK (1ST ROEDER) CIMROD, LLC 150336 GOHLKE UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266697 GOHLKE UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270234 GOHLKE UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 276287 GOHLKE, M. F. 10 KAREN BEAUCHAMP (2500) LAGUNA OIL & GAS CORP. 096748 GOHMERT GAS UNIT #1 1 BUCHEL (EDWARDS) PIONEER NATURAL RES. USA, INC. 076401 GOHMERT GAS UNIT 2 2 BUCHEL (EDWARDS) PIONEER NATURAL RES. USA, INC. 188047 GOING, WINNIE MADGE GAS UNIT 1 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 203952 GOING, WINNIE MADGE GAS UNIT 2 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 209738 GOLDEN ROD GAS UNIT 1 PROVIDENT CITY (WILCOX 7) NEWFIELD EXPLORATION COMPANY 263204 GOLDSTON, W. L. JR. ET AL 1 LAKE PLACEDO (5590) ELLSWORTH, H. P. O&G PROPERTIES 147546 GOLIAD NAVAL AIR STATION 1 DALLAS HUSKY, NE. (HET) WELDER EXPLORATION & PROD., INC. 250759 GOLSCH-EDWARDS GAS UNIT 2 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 089367 GOLSCH-EDWARDS GAS UNIT 3 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 108309 GOLSCH, MARY B. 7 HALLETTSVILLE (7700) PIONEER NATURAL RES. USA, INC. 194116 GONZALES UNIT 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 263685 GONZALES, FELICE 1 HELEN GOHLKE, SW. (WILCOX CONS.) LINN OPERATING, INC. 129362 GONZALES, MAURO ESTATE 6 HELEN GOHLKE, SW. (YEGUA CONS.) LINN OPERATING, INC. 206600 GONZALES, MAURO ESTATE 9 HELEN GOHLKE, SW. (WILCOX CONS.) LINN OPERATING, INC. 124189 GOODRICH-POINDEXTER UNIT 1 HOPE (MIOCENE 2730) SUNCOAST TECHNICAL SERVICES INC 245914 GORDIN ESTATE 3 LA WARD, NORTH (5500) PREMIER NATURAL RESOURCES, LLC 145982 GORDIN ESTATE 7 WILDCAT PREMIER NATURAL RESOURCES, LLC 155880 GORDIN ESTATE 25 LA WARD, NORTH PREMIER NATURAL RESOURCES, LLC 103664 GORDIN ESTATE 30 LA WARD, NORTH (5500) PREMIER NATURAL RESOURCES, LLC 136662 GORDIN ESTATE 31 LA WARD, NORTH (5800 -A-) PREMIER NATURAL RESOURCES, LLC 254482 GORDIN ESTATE 31 LA WARD, NORTH (5900) PREMIER NATURAL RESOURCES, LLC 211132 GORDIN ESTATE 33 LA WARD, NORTH (5500) PREMIER NATURAL RESOURCES, LLC 141104 GORDIN ESTATE 35 LA WARD, NORTH PREMIER NATURAL RESOURCES, LLC 137861 GORDIN ESTATE 37 LA WARD, NORTH (5600) PREMIER NATURAL RESOURCES, LLC 159740 GORDIN ESTATE 38 LA WARD, NORTH (5600) PREMIER NATURAL RESOURCES, LLC 158715 GORDON 1 GREEN (QUEEN CITY) ABEL, M.D. CO. 192282 GORDON 3 COLOGNE (1400) EXPRESS OIL CO. 230148 GORDON ALBERT GAS UNIT 2 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 070004 GORDON G. U. 4 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 171216 GORDON GAS UNIT 7 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 234764 GORDON GAS UNIT 8 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 214168 GORDON GAS UNIT 9 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 238768 GORDON TALK GAS UNIT 1 MALO DOMINGO (WILCOX 10800) DUNE OPERATING COMPANY 092924 GORDON, ALBERT 1 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 058334 GORDON, GEORGE E. 2 COLOGNE (1950) EXPRESS OIL CO. 198630 GOREE 1 MINERAL, WEST (11000) BRITANCO, L.L.C. 228510 GOREE, AUDREY C. 1D YOWARD (9200) BRITANCO, L.L.C. 084251 GOSSETT UNIT 1H DE WITT (EAGLE FORD SHALE) MARATHON OIL EF LLC 271735 GOTT 3 HOPE, NE. (2700) STRATCO OPERATING CO., INC. 220705 GOTT "A" 1 HOPE (MIOCENE 2950) STRATCO OPERATING CO., INC. 229333 GRAEF GAS UNIT 1 A 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 268200 GRAFE, MARY 1 GOOD HOPE (WICK 10100) BRITANCO, L.L.C. 123030 GRAHAM 1 CORDELE, WEST (2600) GREAT TEXAS CRUDE INC. 175657 GRAHMANN UNIT A 1H EAGLEVILLE (EAGLE FORD-2) ZAZA ENERGY, LLC 269150 GRANBERRY A 1 PAISANO CREEK (YEGUA) DOUBLE PLAY OIL & GAS, INC 272362 GRANBERRY UNIT 2H SWEET HOME (EDWARDS) PIONEER NATURAL RES. USA, INC. 224913


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ GRANBERRY-JACKSON 1 FT. MERRILL, NORTH (11800) JAMEX, INC. 220211 GRANBERRY-JACKSON 2 FORT MERRILL (YEGUA) JAMEX, INC. 245448 GRANBERRY, W. M. GAS UNIT 1 SWEET HOME (EDWARDS) PIONEER NATURAL RES. USA, INC. 102145 GRANT 1 SUGARKANE (CRETACEOUS) KARIS RESOURCES, LLC 265539 GRANT-CANNAN 1 BERCLAIR (LULING) WELDER EXPLORATION & PROD., INC. 186795 GRANT, JACK 1G BERCLAIR (WILCOX 10,400) WELDER EXPLORATION & PROD., INC. 141227 GRAVES 6 WESTHOFF (COMBINED ASSOCIATED) BXP OPERATING, LLC 234225 GRAVES, T.A. 2 LA WARD, NORTH (5800 -A-) BXP OPERATING, LLC 198620 GREEN GAS UNIT 1 CHRISTMAS (12300) LRE OPERATING, LLC 220059 GREEN GAS UNIT 1 CHRISTMAS, SOUTH (GANSON) LRE OPERATING, LLC 263745 GREEN GAS UNIT 2 WARMSLEY (VAUGHN) LRE OPERATING, LLC 235671 GREEN, E. E. 2 COSDEN, WEST (WILCOX 7800) BRALEX OPERATING LLC 033595 GREEN, HELEN 1 CAUSEY (11,100) HUGHES, DAN A. COMPANY, L.P. 222200 GREEN, HELEN 1 GARDEN (MIDDLE WILCOX) HUGHES, DAN A. COMPANY, L.P. 224274 GREER 1 FLYING -M- (FRIO 4925) DOUBLE PLAY OIL & GAS, INC 244755 GREESON, ET AL G.U. 1 B-S (FRIO 3540) MILAGRO EXPLORATION, LLC 146087 GREMMEL, E. 1 PETTUS, WEST (1100) CHESNUTT OIL & GAS, INC. 123774 GREMMELL 1B PETTUS, WEST (1100) BRITANCO, L.L.C. 171775 GRESHAM GAS UNIT 2 FRANCITAS (FRIO 8600) SANCHEZ OIL & GAS CORPORATION 272687 GRIFFITH 1 BERKOW (VICKSBURG STRINGER) L & F DRILLING CO., INC. (1) 110373 GRISSOM 1 CAESAR, SOUTH (9600) HUGHES, DAN A. COMPANY, L.P. 193795 GRISSOM 1 COSDEN, WEST (WILCOX 9500) TIDAL PETROLEUM, INC. 214360 GRISSOM 5 COSDEN, WEST (WILCOX 9500) TIDAL PETROLEUM, INC. 226085 GRISSOM 6 COSDEN, WEST (WILCOX 9500) TIDAL PETROLEUM, INC. 225625 GRISSOM UNIT 4 COSDEN, WEST (WILCOX 9500) TIDAL PETROLEUM, INC. 222043 GRIZZLE 1 WILDCAT BLAKENERGY OPERATING, LLC 259532 GRIZZLE 1 BEGO (CONSOLIDATED) BLAKENERGY OPERATING, LLC 214517 GROBERG, F. 1 STEWART (6700 FRIO) KD ENERGY, LLC 131511 GROSS UNIT 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259788 GROSS UNIT 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270873 GROSSMAN, SIMON 1 GAMBLE GULLY (QUEEN CITY) DIRKS PETROLEUM COMPANY 071443 GRUETZMACHER 1 WEESATCHE, NE. (WILCOX 10,030) TEMA OIL AND GAS COMPANY 203068 GRUETZMACHER 2 WEESATCHE, WEST (10,400) TEMA OIL AND GAS COMPANY 170642 GSR 1 BRIGHT FALCON (YEGUA 9600) VENTEX OPERATING CORP. 182914 GUEVARA A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 265749 GUEVARA B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267074 GUMM, LUCILLE 1 ALBRECHT (REKLAW) RAMTEX ENERGY LLC 194637 GUS TIPS GAS UNIT 1 1 KAWITT (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 244761 GUS TIPS GAS UNIT 1 2 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 257651 GUS TIPS GAS UNIT 1 C 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 264995 GUTIERREZ, C. 1 KENEDY, SW. (EDWARDS) WAGNER OIL COMPANY 122064 GWOSDZ UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268558 H & P 2 ELOISE (6760) ACOCK/ANAQUA OPERATING CO., LP 260674 H J SCHULZ 5H GAS UNIT 3 THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 232332 H SCHULZ 4H GAS UNIT 2 THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 226839 H SISTERS A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266749 H SISTERS B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268544 H. J. SCHULZ 5H GAS UNIT 2 THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 229704 H. T. CHAPMAN 04 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267247 HACKBARTH 2D WESTHOFF (COMBINED ASSOCIATED) BXP OPERATING, LLC 247519 HACKBARTH-BURES 1 WESTHOFF (COMBINED ASSOCIATED) BXP OPERATING, LLC 250766


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HACKNEY, BESSIE 2 SPEARY (WILCOX 9500) FINLEY RESOURCES, INC. 217745 HACKNEY, BESSIE UNIT 1 SPEARY (WILCOX 9500) FINLEY RESOURCES, INC. 128113 HACKNEY, JOHN A. 1 SPEARY (HACKNEY 8600) FINLEY RESOURCES, INC. 146563 HAFERNICK UNIT 2 WESTHOFF (COMBINED ASSOCIATED) MAGNUM PRODUCING, LP 274193 HAGAN 1 RUNGE, SW. (LULING) CRAWFORD HUGHES OPERATING CO. 205213 HAHN 3 LONG MOTT, EAST (7100) KEBO OIL & GAS, INC. 272632 HAHN A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264159 HAHN DEW 1H EAGLEVILLE (EAGLE FORD-2) CHESAPEAKE OPERATING, L.L.C. 268704 HAHN DEW 2H EAGLEVILLE (EAGLE FORD-2) CHESAPEAKE OPERATING, L.L.C. 273147 HAHN DEW 3H EAGLEVILLE (EAGLE FORD-2) CHESAPEAKE OPERATING, L.L.C. 273149 HAHN, A.W. 1 COLOMA CREEK, NORTH (7575) MAC SERVICES, INC. 098380 HAHN, O. F. 1 COLOMA CREEK, NORTH (7600) CREST PETROLEUM, LLC 061398 HAHN, O.F. 3 L COLOMA CREEK, NORTH (8400) CREST PETROLEUM, LLC 072875 HAHN, O.F. 3 U COLOMA CREEK, NORTH (8300) HAHN, OSCAR 072874 HAILEY 1 MIKESKA (PETTUS) CORENERGY OPERATING GROUP, LLC 173074 HAILEY 2 MIKESKA (PETTUS) CORENERGY OPERATING GROUP, LLC 174436 HAILEY, L. B. UNIT 1H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 264506 HAILEY, L. B. UNIT 2H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 264360 HAL, B. ALLEN ET AL 1-L SUBLIME, SOUTH (FRIO 2960) NACOGDOCHES OIL AND GAS, INC. 146770 HAL, B. ALLEN ET AL 1-U SUBLIME, SOUTH (FRIO 2500) NACOGDOCHES OIL AND GAS, INC. 146768 HALEPESKA GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 260868 HALEPESKA GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 266166 HALEPESKA GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 274139 HALL 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 222962 HALL 1 TULETA, WEST (SLICK-WILCOX 7500) REPUBLIC RESOURCES, LLC. 004514 HALL, C. E. 1 ROCK RIDGE (800) CHESNUTT OIL & GAS, INC. 109694 HALL, IMOGENE 6 U TULETA, WEST (VICKSBURG G) REPUBLIC RESOURCES, LLC. 114166 HAMILTON A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266859 HAMILTON FEE B 3 EHF (WILCOX 8600) A.O.E. OPERATORS, INC. 200210 HAMILTON GAS UNIT NO 1 1 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 264151 HAMILTON TRUST A-405 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 259352 HAMILTON TRUST A-405 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270246 HAMILTON TRUST A-405 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 276682 HAMILTON TRUST UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 260706 HAMILTON TRUST UNIT C 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 261182 HAMILTON TRUST UNIT C 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270930 HAMILTON TRUST UNIT C 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270903 HAMILTON TRUST UNIT C 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 272310 HAMILTON TRUST UNIT D 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 263687 HAMILTON TRUST UNIT D 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270249 HAMILTON WALLIS 1H DE WITT (EAGLE FORD SHALE) MARATHON OIL EF LLC 271734 HAMMAN 1H SUGARKANE (EAGLE FORD) MARSHFIELD OIL & GAS, LLC 264456 HAMMAN & ANDERSON 7 HORDES CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 205521 HAMMAN & ANDERSON 8 WILDCAT WYNN-CROSBY OPERATING, LTD. 262979 HAMMAN & ANDERSON 8 HORDES CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 226493 HAMMAN & ANDERSON GAS UNIT 3 4 HORDES CREEK (WILCOX CONS.) WYNN-CROSBY OPERATING, LTD. 195472 HAMMAN-ANDERSON 1 DIAL (FRIO 2230) RILEY EXPLORATION OPG CO, LLC 208107 HANCOCK 1 PROVIDENT CITY NE (LWR WX. CONS) VIPER S.W.D., LLC 209397 HANCOCK 2 PROVIDENT CITY NE (LWR WX. CONS) VIPER S.W.D., LLC 214679 HANCOCK -I- 1 PROVIDENT CITY (WILCOX 12,500) CIMAREX ENERGY CO. OF COLORADO 088467 HANCOCK "A" GAS UNIT 1 PROVIDENT CITY (FRIO 3660) CIMAREX ENERGY CO. OF COLORADO 158267


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HANCOCK "H" 2 PROVIDENT CITY (WILCOX 10800) CIMAREX ENERGY CO. OF COLORADO 257223 HANCOCK ESTATE "B" 2 PROVIDENT CITY (WILCOX 12,500) CIMAREX ENERGY CO. OF COLORADO 163129 HANCOCK GAS UNIT #2 1 PROVIDENT CITY (WILCOX 12,100) XTO ENERGY INC. 169244 HANCOCK GU #1 7 PROVIDENT CITY (WILCOX 14,000) XTO ENERGY INC. 221079 HANCOCK GU #2 1 PROVIDENT CITY (WILCOX 12,000) XTO ENERGY INC. 223226 HANCOCK GU 1 1R PROVIDENT CITY (WILCOX 11,900) XTO ENERGY INC. 232304 HANCOCK, D.W. A 4 CLAREVILLE (HOCKLEY 4500) H&G OIL & GAS COMPANY, INC. 100147 HANCOCK, ET AL G. U. 3 PROVIDENT CITY (WILCOX 12,100) XTO ENERGY INC. 171602 HANCOCK, ET AL G.U. 1 PROVIDENT CITY (WILCOX 14,000) XTO ENERGY INC. 156186 HANCOCK, EVA RUTH 1 PROVIDENT CITY (WILCOX 14800 SD) XTO ENERGY INC. 186323 HANCOCK, EVA RUTH 2 PROVIDENT CITY (WILCOX 14800 SD) XTO ENERGY INC. 187540 HANCOCK, JOHN W. SR. 1 PROVIDENT CITY (WILCOX 16,300) XTO ENERGY INC. 182556 HANCOCK, JOHN W. SR. A 2 WILDCAT XTO ENERGY INC. 188641 HANDY 02 0101H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 258773 HANDY 02 0102H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271400 HANDY 02 0103H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269118 HANDY 02 0104H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269134 HANDY 02 0105H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 270407 HANDY 02 0106H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271809 HANDY 02 0107H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271600 HANDY 02 0201H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 270294 HANDY 02 0202H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269682 HANDY 02 0203H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269681 HANDY 02 0204H SUGARKANE (AUSTIN CHALK) PIONEER NATURAL RES. USA, INC. 272139 HANDY 02 0204H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 270921 HANDY 02 0205H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269109 HANDY 02 0206H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269115 HANDY 02 0207H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269196 HANDY-ROARK UNIT 1 BERCLAIR, SW. (3300) T-C OIL COMPANY, LLC 257901 HANDY, R. E. 1 BERCLAIR (1620) CORENERGY OPERATING GROUP, LLC 176193 HANLEY, MABEL ET AL 1 FANNIN, NORTH (3960) CLARON CORPORATION 124170 HANNA, ROSS 5 MAYO (3575) KD ENERGY, LLC 134994 HANNES 1 GOWITT (YEGUA 4575) B D PRODUCTION CO., INC. 236173 HANSEN A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 270648 HARDESTY UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 264514 HARDT, E. B. 3 ATKINSON (KLINGEMAN) LODESTAR PACIFIC CORPORATION 076581 HARING 1 MCCASKILL (LOWER WILCOX) TIDEWATER MINERALS CORPORATION 192592 HARITHAS, ANN W. 6 SARCO CREEK (2800) T-C OIL COMPANY, LLC 159372 HARKINS 6 C CIRCLE -A- (4230) CHARRO OPERATING, L.L.C. 128618 HARKINS ESTATE 1 DINERO, WEST (HOCKLEY 4900) CASKIDS OPERATING COMPANY 231909 HARKINS-O'BRIEN "A" 8-C SARCO CREEK, WEST (4200) CHARRO OPERATING, L.L.C. 162986 HARKINS-O'BRIEN "A" 8-T SARCO CREEK, WEST (4260) CHARRO OPERATING, L.L.C. 162964 HARLAN METTING 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 259857 HARLAN METTING 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 266033 HARLAN NELSON 1 HOUDMAN (WILCOX 8200) KEBO OIL & GAS, INC. 258706 HAROLD GOHMERT 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268964 HARPER 1 CADENCE RELIANCE (WILCOX) HANKEY OPERATING, INC. 212495 HARPER 2 CHARCO, SE. (WILCOX 9600) HANKEY OPERATING, INC. 223733 HARRIS -N- 2 HARRIS, NE. (MASSIVE SEG. C) STRATCO OPERATING CO., INC. 118346 HARRIS PEARL -A- MACKHANK G.U. 4 HARRIS (WILCOX-MACKHANK) UNIT PETROLEUM COMPANY 090136 HARRIS-SKAGGS UNIT 1 CLAYTON (950) MACERO MINERALS, INC. 099341


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HARRIS, PEARL -A- 1 HARRIS (WILCOX-LULING) UNIT PETROLEUM COMPANY 150720 HARRISON 1 BULLER (10000 SAND) HEMCO DEVELOPMENT, LLC 200831 HARRISON ET AL GAS UNIT 1 NORDHEIM, SW. (11,400) BAY ROCK OPERATING COMPANY 188223 HARRY SCHULTZ 1 THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 215289 HARRY SCHULZ 2 THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 229986 HART, W. F. 1 BRUSHY CREEK (FRIO 4200) HALLADAY ENERGY, LLC 244746 HARTMAN A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264847 HARTMAN UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 264314 HARTMAN UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266872 HARTMAN, VICTOR -A- 1 ARNECKEVILLE (YEGUA 5260) ROBERTSON RESOURCES, INC. 131249 HARTMAN, W. 1 ARNECKEVILLE (WILCOX A 7700) HOUSTON GULF ENERGY CORPORATION 136463 HARTT 5 WILDCAT PROPERTY PRODUCING CO. 178782 HARTT G. U. 1 1 PROVIDENT CITY (WILCOX 13000) NEWFIELD EXPLORATION COMPANY 192162 HARTT G.U. 1 1 PROVIDENT CITY (WILCOX 11,900) NEWFIELD EXPLORATION COMPANY 192163 HARTT UNIT 6 PROVIDENT CITY (FRIO) PROPERTY PRODUCING CO. 182517 HARTT, J. 1 PROVIDENT CITY (YEGUA 5400) PROPERTY PRODUCING CO. 089037 HARTT, JAMES 2 PHILLIPS-MEAD (MIOCENE 1850) PROPERTY PRODUCING CO. 061605 HARTZENDORF 1 SLIVA, SOUTHWEST (3600) HOWARD EXPLORATION, INC. 243894 HARVEY RENGER GAS UNIT 2 RENGER (WILCOX 12600) CANTERA OPERATING, LLC 216425 HARVEY RENGER GAS UNIT 3 SPEAKS, SW. (SIMPSON) CANTERA OPERATING, LLC 269896 HARVEY RENGER GAS UNIT 4 SPEAKS, SW. (SIMPSON) CANTERA OPERATING, LLC 274357 HARVEY RENGER GAS UNIT 5 RENGER (WILCOX 12600) CANTERA OPERATING, LLC 223464 HARVEY RENGER GAS UNIT 6 SPEAKS, SW. (SIMPSON) CANTERA OPERATING, LLC 274191 HARVEY RENGER GAS UNIT 07 RENGER (WILCOX 12600) CANTERA OPERATING, LLC 236574 HARVEY RENGER GAS UNIT NO. 1 1 RYAN (WILCOX 10,600) CANTERA OPERATING, LLC 242627 HARVEY, J.H. ESTATE 3 VIENNA (FRIO 3000) MOOSE OPERATING CO., INC. 157888 HASDORFF "A" 1 WESTHOFF (COMBINED ASSOCIATED) PINTAIL OIL & GAS, LLC 203210 HASDORFF "A" 3 WESTHOFF (COMBINED ASSOCIATED) PINTAIL OIL & GAS, LLC 214304 HASDORFF "A" 5 WESTHOFF (COMBINED ASSOCIATED) PINTAIL OIL & GAS, LLC 225518 HATCHER HEIRS GAS UNIT 1 MCNEILL (YEGUA 5300) WELDER EXPLORATION & PROD., INC. 265034 HATCHETT, N. P. 3 CLAYTON (BLOCK 86 SD) JONES, EDWIN M. OIL CO. 061608 HATHAWAY EDWARDS GAS UNIT 2 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 082190 HATHAWAY EDWARDS GAS UNIT 6 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 153106 HATHAWAY-EDWARDS GU 5 5 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 112263 HATHAWAY-EDWARDS GU 7 7 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 154270 HAUN, ELENA ET AL 1 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 172634 HAUSMANN 1 FANNIN, NORTH (3650) MERCY OIL AND GAS, LP 229087 HAUSMANN, ET. AL. 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 203160 HAVEMAN TRUST 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268234 HAVEMAN TRUST 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271495 HAVEMAN 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 259859 HAVEMAN 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269680 HAWES, EMILY P. 2D HAWES (BASAL MIOCENE) MATAGORDA RESOURCES CO., INC. 117363 HAWKINS A 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 226762 HAWKINS DEEP GAS UNIT 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 201842 HAWKINS DEEP GU 2 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 218321 HAWKINS DEEP GU 3 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 231503 HAWKINS SHALLOW G. U. 1 MARSHALL, S.W. (MIOCENE 2350) HILCORP ENERGY COMPANY 200546 HAWKINS SHALLOW GAS UNIT 2 MARSHALL (FRIO II B) HILCORP ENERGY COMPANY 202724 HAY 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268708 HAY, E.D. ET AL GAS UNIT 1 BUCHEL (EDWARDS) PIONEER NATURAL RES. USA, INC. 071049


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HAYNES G.U. 1 NURSERY, S. (3625) SOUNDLOGIC PROD. & EXPLOR., LLC 140762 HAYNES, EMMA 1 U EMMA HAYNES (RECKLAW) SIRTEX OIL IND. 001528 HEALEY 1 HEALEY (PETTUS) DOUBLE PLAY OIL & GAS, INC 195239 HEARD 1 MARSHALL (MIDDLE WILCOX) ETOCO, L.P. 209545 HEARD 1 MEDIO CREEK (4300) MEGO RESOURCES, LLC 234182 HEARD 1 WEESATCHE, SOUTH ( YEGUA 5000) BRITANCO, L.L.C. 114897 HEARD 2 REFUGIO-FOX (6300) G. & M. ENERGY COMPANY 086341 HEARD 2 REFUGIO HEARD (6200) ACOCK/ANAQUA OPERATING CO., LP 229847 HEARD 3 REFUGIO HEARD (6200) ACOCK/ANAQUA OPERATING CO., LP 234731 HEARD 4 REFUGIO HEARD (5700) ACOCK/ANAQUA OPERATING CO., LP 244403 HEARD FANNIE V W 29 GRETA (C-2) ACOCK/ANAQUA OPERATING CO., LP 203915 HEARD UNIT 2 MARSHALL (MIDDLE WILCOX) ETOCO, L.P. 214303 HEARD UNIT 3R MARSHALL (MIDDLE WILCOX) ETOCO, L.P. 220593 HEARD-TEX 2 GRETA (O-1) ACOCK/ANAQUA OPERATING CO., LP 175379 HEARD, A. W. J. 2 REFUGIO HEARD (5600) TSOCO 063576 HEARD, C. E. -B- 8 HEARD RANCH (4000) MILAGRO EXPLORATION, LLC 034895 HEARD, C. E. 'B' 35 HEARD RANCH (4050) MILAGRO EXPLORATION, LLC 266677 HEARD, C. E. 'B' 36 HEARD RANCH (3650) MILAGRO EXPLORATION, LLC 269857 HEARD, C. E. 'B' 41 HEARD RANCH (3650) MILAGRO EXPLORATION, LLC 269853 HEARD, C. E. 'B' (3650) 6 HEARD RANCH (3650) MILAGRO EXPLORATION, LLC 151101 HEARD, C. E. "B" 1 HEARD RANCH (3650) MILAGRO EXPLORATION, LLC 236033 HEARD, C. E. "B" 3 HEARD RANCH (3650) MILAGRO EXPLORATION, LLC 139800 HEARD, C. E. "B" 8 U HEARD RANCH (3900) MILAGRO EXPLORATION, LLC 034755 HEARD, C. E. "B" 11 HEARD RANCH (4400) MILAGRO EXPLORATION, LLC 124470 HEARD, C. E. "B" 16 HEARD RANCH (3900) MILAGRO EXPLORATION, LLC 118604 HEARD, C. E. "B" 17 HEARD RANCH (3650) MILAGRO EXPLORATION, LLC 212412 HEARD, C. E. "B" 18 HEARD RANCH (2900) MILAGRO EXPLORATION, LLC 205538 HEARD, C. E. "B" 19 HEARD RANCH (2900) MILAGRO EXPLORATION, LLC 237019 HEARD, C. E. "B" 21 HEARD RANCH (3650) MILAGRO EXPLORATION, LLC 215104 HEARD, C. E. "B" 23 HEARD RANCH (4400) MILAGRO EXPLORATION, LLC 223044 HEARD, C. E. "B" 24 HEARD RANCH (3650) MILAGRO EXPLORATION, LLC 270511 HEARD, C. E. "B" 25 HEARD RANCH (3650) MILAGRO EXPLORATION, LLC 270512 HEARD, C. E. "B" 25 HEARD RANCH (4400) MILAGRO EXPLORATION, LLC 225492 HEARD, C. E. "B" 26 HEARD RANCH (3650) MILAGRO EXPLORATION, LLC 223043 HEARD, C. E. "B" 30 HEARD RANCH (4300) MILAGRO EXPLORATION, LLC 230419 HEARD, C. E. "B" 31 HEARD RANCH (4600) MILAGRO EXPLORATION, LLC 230422 HEARD, C. E. "B" 32 HEARD RANCH (3650) MILAGRO EXPLORATION, LLC 269320 HEARD, C. E. "B" 37 HEARD RANCH (3650) MILAGRO EXPLORATION, LLC 232897 HEARD, C. E. "B" 38 HEARD RANCH (3650) MILAGRO EXPLORATION, LLC 232874 HEARD, C. E. "B" 39 HEARD RANCH (4400) MILAGRO EXPLORATION, LLC 235984 HEARD, C. E. "B" 47 HEARD RANCH (3500) MILAGRO EXPLORATION, LLC 242489 HEARD, C. E. "B" 49 HEARD RANCH (4300) MILAGRO EXPLORATION, LLC 244423 HEARD, C.E. -B- 5 HEARD RANCH (4300) MILAGRO EXPLORATION, LLC 124816 HEARD, C.E. "B" 9 HEARD RANCH (4300) MILAGRO EXPLORATION, LLC 044896 HEARD, C.E. "B" 10 HEARD RANCH (2900) MILAGRO EXPLORATION, LLC 068265 HEARD, C.E. "B" 22 HEARD RANCH (4500) MILAGRO EXPLORATION, LLC 215103 HEARD, C.E. "B" 24 HEARD RANCH (4400) MILAGRO EXPLORATION, LLC 247600 HEARD, C.E. "B" 27 HEARD RANCH (4400) MILAGRO EXPLORATION, LLC 233420 HEARD, C.E. "B" 43 HEARD RANCH (4400) MILAGRO EXPLORATION, LLC 235987 HEARD, CE 'B' 46 HEARD RANCH (2900) MILAGRO EXPLORATION, LLC 266678 HEARD, CLAUD E. ET AL 20 GRETA (O-4) HILCORP ENERGY COMPANY 084225


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HEARD, CLAUDE E. ET AL 9 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 147369 HEARD, CLAUDE E. ET AL 13 TOM O'CONNOR (2830) HILCORP ENERGY COMPANY 232645 HEARD, CLAUDE E., ET AL 28 GRETA (L- 8) HILCORP ENERGY COMPANY 237049 HEARD, CLEMENT 1SG GRETA (L- 5) HILCORP ENERGY COMPANY 052278 HEARD, CLEMENT 11 TOM OCONNOR (5440) HILCORP ENERGY COMPANY 070302 HEARD, CLEMENT 14D TOM OCONNOR (4200) HILCORP ENERGY COMPANY 167023 HEARD, CLEMENT 15 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 137592 HEARD, CLEMENT 17 GRETA (O-4) HILCORP ENERGY COMPANY 107213 HEARD, CLEMENT 19 TOM OCONNOR (6750) HILCORP ENERGY COMPANY 229716 HEARD, CLEMENT 21 TOM OCONNOR (5425 SAND) HILCORP ENERGY COMPANY 229397 HEARD, F. V. W. 22 GRETA (O-4) ACOCK/ANAQUA OPERATING CO., LP 122957 HEARD, FANNIE 62 TOM OCONNOR (3900) HILCORP ENERGY COMPANY 004415 HEARD, FANNIE 64 F TOM OCONNOR (3900) HILCORP ENERGY COMPANY 004416 HEARD, FANNIE V. W. 26 GRETA (C-1) ACOCK/ANAQUA OPERATING CO., LP 149872 HEARD, FANNIE V. W. 34 GRETA (6050) ACOCK/ANAQUA OPERATING CO., LP 232769 HEARD, FANNIE V. W. MRS. 4G TOM OCONNOR (3550) HILCORP ENERGY COMPANY 220944 HEARD, FANNIE V. W. MRS. 18 TOM OCONNOR (5500 SAND) HILCORP ENERGY COMPANY 207236 HEARD, FANNIE V. W. MRS. 25 TOM OCONNOR (5450 SAND) HILCORP ENERGY COMPANY 175959 HEARD, FANNIE V. W. MRS. 51 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 236991 HEARD, FANNIE V. W. MRS. 52 TOM OCONNOR HILCORP ENERGY COMPANY 139125 HEARD, FANNIE V. W. MRS. 64 D GRETA (L- 8) HILCORP ENERGY COMPANY 053249 HEARD, FANNIE V. W. MRS. 64J GRETA (L- 7 SOUTH) HILCORP ENERGY COMPANY 178487 HEARD, FANNIE V. W. MRS. 66 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 139252 HEARD, FANNIE V. W. MRS. 67 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 159454 HEARD, FANNIE V. W. MRS. 70 TOM OCONNOR (4050) HILCORP ENERGY COMPANY 069867 HEARD, FANNIE V. W. MRS. 71 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 151873 HEARD, FANNIE V. W. MRS. 90 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 136936 HEARD, FANNIE V. W., MRS. 45 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 229839 HEARD, FANNIE V. W., MRS. 72 TOM OCONNOR (3550) HILCORP ENERGY COMPANY 219867 HEARD, FANNIE V. W., MRS. 93 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 234347 HEARD, FANNIE V. W., MRS. 95 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 221832 HEARD, FANNIE V.W. 24 GRETA (C-5) ACOCK/ANAQUA OPERATING CO., LP 130665 HEARD, FANNIE V.W. 30 GRETA (C-2) ACOCK/ANAQUA OPERATING CO., LP 264846 HEARD, FANNIE, V. W. MRS. 79 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 237037 HEARD, GEORGIA 3 HEARD RANCH (3700) MEGO RESOURCES, LLC 001984 HEARD, GEORGIA MRS. 10 HEARD RANCH (4300) MEGO RESOURCES, LLC 052678 HEARD, IRA "A" 2 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 155871 HEARD, IRA "A" 13 GRETA (L- 8) HILCORP ENERGY COMPANY 226072 HEARD, J. F. B. 3 GRETA, NORTH (6100) ACOCK/ANAQUA OPERATING CO., LP 218347 HEARD, J. F. B. 5 A GRETA (C-5) ACOCK/ANAQUA OPERATING CO., LP 146737 HEARD, J. F. B. 8 GRETA (C-1-A, NORTH) ACOCK/ANAQUA OPERATING CO., LP 271573 HEARD, J. F. B. 17 GRETA (C-1) ACOCK/ANAQUA OPERATING CO., LP 145449 HEARD, J. F. B. 19 GRETA (O-4) ACOCK/ANAQUA OPERATING CO., LP 116282 HEARD, J. F. B. 21 T GRETA (F-2 WEST) ACOCK/ANAQUA OPERATING CO., LP 001927 HEARD, J. F. B. - TEX 9 GRETA (L-13) ACOCK/ANAQUA OPERATING CO., LP 176706 HEARD, J.F.B. 7 GRETA (O-4) ACOCK/ANAQUA OPERATING CO., LP 127306 HEARD, J.F.B. 9 GRETA (O-4) ACOCK/ANAQUA OPERATING CO., LP 127386 HEARD, J.F.B. 16 GRETA (O-4) ACOCK/ANAQUA OPERATING CO., LP 146698 HEARD, J.F.B. 19 GRETA (L- 5-A) ACOCK/ANAQUA OPERATING CO., LP 132020 HEARD, J.F.B. 25 GRETA (C-5) ACOCK/ANAQUA OPERATING CO., LP 128689 HEARD, J.F.B. 27 GRETA (O-4) ACOCK/ANAQUA OPERATING CO., LP 127391


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HEARD, MRS FANNIE V.W. 7G TOM OCONNOR (5200, EAST) HILCORP ENERGY COMPANY 274512 HEARD, MRS. FANNIE V. M. 89 GRETA (O-2 SOUTH) HILCORP ENERGY COMPANY 192702 HEARD, MRS. FANNIE V. W. 3 TOM OCONNOR (5200, EAST) HILCORP ENERGY COMPANY 190430 HEARD, MRS. FANNIE V. W. 3 TOM OCONNOR (5450 SAND) HILCORP ENERGY COMPANY 174395 HEARD, MRS. FANNIE V. W. 50 TOM O'CONNOR(4900) HILCORP ENERGY COMPANY 150604 HEARD, MRS. FANNIE V. W. 69 TOM OCONNOR (3900) HILCORP ENERGY COMPANY 217522 HEARD, MRS. FANNIE V. W. 81 TOM OCONNOR (3250) HILCORP ENERGY COMPANY 195722 HEARD, MRS. FANNIE V. W. 85 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 220895 HEARD, MRS. FANNIE V. W. 102 TOM OCONNOR HILCORP ENERGY COMPANY 151521 HEARD, TOM 3 REFUGIO HEARD (3100) STARRETT, C. E. 060636 HEARD, V. E. 6 SARCO CREEK, W. (FRIO 4600) CHARRO OPERATING, L.L.C. 121479 HEARD,C.E "B" 33 HEARD RANCH (3650) MILAGRO EXPLORATION, LLC 230423 HEIMER, LOIS 1 MOULTON (JACKSON) SOUTHERN OIL & GAS CO, LTD. 075224 HEINRICH HEIRS 1 WEESATCHE, NE. (HOLT FB A) TRI-UNION DEVELOPMENT CORP. 187703 HEINRICH, HENRY 2 HORADAM (2200 MIOCENE) JMM ENERGY LLC 157644 HELM - ARBURN UNIT 2 GARDEN (MIDDLE WILCOX) HUGHES, DAN A. COMPANY, L.P. 219859 HELM-ARBURN UNIT 3 CAUSEY (11,100) HUGHES, DAN A. COMPANY, L.P. 245473 HELM-ARBURN UNIT 3 GARDEN (MIDDLE WILCOX) HUGHES, DAN A. COMPANY, L.P. 257877 HELWEG, ALVIN 1 PRIDHAM LAKE (OAKVILLE) JAD OIL, INC. 140331 HELWEG, ALVIN 3 PRIDHAM LAKE, WEST (CATAHOULA) JAD OIL, INC. 213937 HENDERSON 13 PLACEDO (4700) PEGASUS OPERATING, INC. 175905 HENDERSON ET AL GAS UNIT 2 THE RAPTURE (MAGNOLIA) MILAGRO EXPLORATION, LLC 208259 HENDERSON ET AL GAS UNIT 3 THE RAPTURE (MAGNOLIA) MILAGRO EXPLORATION, LLC 212164 HENDERSON-PICKERING 1 PLACEDO, EAST (4000) CULLEN, R. D. 003637 HENDERSON, ET AL GAS UNIT 2 THE RAPTURE (DELTA) MILAGRO EXPLORATION, LLC 204737 HENKE 1 HALLETTSVILLE, SOUTH (WX. 6900) TRIO CONSULTING & MANAGEMENT,LLC 269111 HENKE, E. 1 ENKE (MIOCENE 2100) NELSON, JAMES L. 083153 HENKES, A. G. GAS UNIT 1 HALLETTSVILLE, SOUTH (ANDERSON) CAPITAL STAR OIL & GAS, INC. 074489 HENLEY GU 1 HOPE (14,000) BLUESTONE NATURAL RES. II, LLC 198764 HENLEY GU 2 WILDCAT BLUESTONE NATURAL RES. II, LLC 205462 HENLEY GU 2 HOPE (14,000) BLUESTONE NATURAL RES. II, LLC 202541 HENLEY GU 4 HOPE (14,000) BLUESTONE NATURAL RES. II, LLC 205695 HENLEY GU 6 HOPE (13,600) BLUESTONE NATURAL RES. II, LLC 255746 HENLEY GU 7 BRUSHY CREEK (WILCOX -S-1-11200) BLUESTONE NATURAL RES. II, LLC 257080 HENNEKE-WASKOW GAS UNIT 1 KAWITT (SECOND ROEDER) STATOIL TEXAS ONSHORE PROP LLC 217626 HENNEKE-WASKOW GAS UNIT 2 SPEARY (ROEDER 9100) STATOIL TEXAS ONSHORE PROP LLC 220851 HENNIG 1 GAFFNEY, SW. (4900) CHARRO OPERATING, L.L.C. 263354 HENNIG UNIT 1 COLETTO CREEK (4300) KLOTZMAN, M. S. EXPLORATION CO. 155919 HENNIG UNIT 2 COLETTO CREEK, SOUTH (1400) KLOTZMAN, M. S. EXPLORATION CO. 139548 HENRY BUES 1 PAWNEE (WILCOX) PIONEER NATURAL RES. USA, INC. 145692 HENRY BUES GAS UNIT 3 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 142065 HENRY BUES GAS UNIT 4 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 144537 HENRY BUES GAS UNIT 5 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 145031 HENRY BUES GAS UNIT 6 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 147266 HENRY BUES GAS UNIT 7 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 149882 HENRY BUES GAS UNIT 8 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 187329 HENRY BUES GAS UNIT 9 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 190050 HENRY BUES GAS UNIT 10 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 205879 HENRY BUES GAS UNIT 11 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 208366 HENRY BUES GAS UNIT 12 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 218206 HENRY BUES GAS UNIT 13 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 221523


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HENRY BUES GAS UNIT 15 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 227338 HENRY, HERMINE 1 D ANNA BARRE (8500) WADI PETROLEUM, INC. 197434 HENSON GAS UNIT 1H YOAKUM (EDWARDS) ABRAXAS PETROLEUM CORPORATION 176160 HENSON GAS UNIT 2H YOAKUM (EDWARDS) ABRAXAS PETROLEUM CORPORATION 179325 HENSON GAS UNIT 3H YOAKUM (EDWARDS) ABRAXAS PETROLEUM CORPORATION 244340 HENZE, MARY 1 HENZE (SLICK) ELLIOTT OIL & GAS OPERATING CO. 002068 HERLIN, JEAN T. 1 FRANCITAS (MIOCENE B) PITCHFORK OIL & GAS, INC. 152751 HERLIN, JEAN T. 6 CARANCAHUA CREEK, E (MIOCENE B) PITCHFORK OIL & GAS, INC. 074391 HERMES UNIT 1 HALLETTSVILLE, E.(MIDDLE WILCOX) MASCOT OIL COMPANY 266493 HERREJON 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268777 HERREJON 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 274637 HERREJON 01 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 274638 HERREJON 01 04H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 273700 HERRING "A" 1 CLAYTON (LULING) TETON PETROLEUM CORPORATION 155090 HERRING RANCH 4 CLAYTON (QUEEN CITY UPPER) AMPAK OIL COMPANY 217983 HERRING RANCH 5502 CLAYTON (QUEEN CITY) AMPAK OIL COMPANY 131543 HERRING RANCH 6402 CLAYTON (WILCOX 7370-HERRING SD) MOORINGSPORT ENERGY PROD. CO. 132993 HERRING RANCH -A- 5501 CLAYTON (QUEEN CITY) SURE FLOW OIL & GAS, INC. 120218 HERRING RANCH BLOCK 55 4 CLAYTON (WILCOX 7370-HERRING SD) MOORINGSPORT ENERGY PROD. CO. 135709 HERRING RANCH 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269501 HERRING RANCH 02 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268661 HERRING RANCH 03 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268770 HERRING RANCH 04 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268945 HERRING RANCH 67 2 MAXINE, EAST (MATULA) GEISER OPERATING, INC. 235608 HERRING RANCH 67 2 MAXINE, EAST (8700) GEISER OPERATING, INC. 156866 HERRING RANCH 67 2 MAXINE, EAST (9700) GEISER OPERATING, INC. 178915 HERRING RANCH 67-1 1 MAXINE, EAST (8700) GEISER OPERATING, INC. 102317 HERSCHEL FULBRIGHT GAS UNIT 2 THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 233762 HERSCHEL FULBRIGHT GU 1 THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 221418 HERSCHEL FULBRIGHT 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267963 HERSCHEL FULBRIGHT 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271812 HESTER, CARL T. 1 HEINZEVILLE (RECKLAW) RAMTEX ENERGY LLC 107201 HESTER, CARL T. 2 HEINZEVILLE (RECKLAW) RAMTEX ENERGY LLC 207664 HEWITT 1 TELFERNER (2000) HOLLIMON OIL CORPORATION 250555 HEWITT 2 TELFERNER (2200) HOLLIMON OIL CORPORATION 194689 HEWITT 6 TELFERNER, NORTH (2500) HOLLIMON OIL CORPORATION 255196 HEWITT "A" 8 TELFERNER (2200) HOLLIMON OIL CORPORATION 203207 HEWITT "B" 9 TELFERNER, EAST (4400) HOLLIMON OIL CORPORATION 203660 HEYSER EST. 1 CANDACE (2070) VEGA EXPLORATION, INC. 210000 HEYSER EST. 2 CANDACE (2070) VEGA EXPLORATION, INC. 237014 HICKS 1 TORO GRANDE, N.E. (9300 SD.) HOLLIMON OIL CORPORATION 251107 HILARY 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 190828 HILBRICH 1 MCCASKILL (WILCOX L-3) TIDEWATER MINERALS CORPORATION 181499 HILBRICH 2 MCCASKILL (LOWER WILCOX) TIDEWATER MINERALS CORPORATION 191553 HILBRICH 3 MCCASKILL (LOWER WILCOX) TIDEWATER MINERALS CORPORATION 192597 HILBRICH 4 MCCASKILL (LOWER WILCOX) TIDEWATER MINERALS CORPORATION 194654 HILBRICH-SELLER 3 L MCCASKILL (WILCOX SLICK 7400) MARWELL PETROLEUM LTD PARTNRSHIP 092726 HILBRICH-SELLERS 3 CALIENTE (10,600) TRATON OPERATING COMPANY 192220 HILBRICH-SELLERS 3 U MCCASKILL (REKLAW 2ND) MARWELL PETROLEUM LTD PARTNRSHIP 075358 HILBRICH-SELLERS -B- 2 BIRDIE (7100 CARRIZZO) MARWELL PETROLEUM LTD PARTNRSHIP 119960 HILDA DAGG 1 DRY HOLLOW (WILCOX MASSIVE) CANTERA OPERATING, LLC 276677


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HILDA DAGG GU2 1 DRY HOLLOW (WILCOX DAGG) CANTERA OPERATING, LLC 106174 HILL - ROSE GAS UNIT 1 CAESAR, SOUTH (9600) HUGHES, DAN A. COMPANY, L.P. 198739 HILL-ROSE GAS UNIT 2 C COSDEN, WEST (WILCOX 9500) HUGHES, DAN A. COMPANY, L.P. 216255 HILL-ROSE GAS UNIT 2 T CAESAR, SOUTH (9600) HUGHES, DAN A. COMPANY, L.P. 219744 HILLYER, MAUDE K. 2 GABRYSCH (6290) BSE PRODUCTION CO. 258175 HILMER KOOPMANN A 274 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 259552 HINES 1 OAKVILLE (MID WILCOX 9200) FAULCONER, VERNON E., INC. 173017 HINES, E. A. 1 TEXAM (WILCOX 7600) SIMS, JIM 141080 HINNANT HEIRS 'A' 4 LAGARTO CREEK (YEGUA) ROYAL PRODUCTION COMPANY, INC. 272692 HINNANT HEIRS 'B' 2 HINNANT (WILSON) ROYAL PRODUCTION COMPANY, INC. 274411 HINNANT HEIRS "A" 1 HINNANT (WILSON) ROYAL PRODUCTION COMPANY, INC. 264538 HINNANT HEIRS "A" 2 HINNANT (2000) ROYAL PRODUCTION COMPANY, INC. 265099 HINOJOSA A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266753 HINTON 1 OAKVILLE (WILCOX CONS.) WELDER EXPLORATION & PROD., INC. 244405 HK RANCH 2 KEERAN, EAST (5470) PINTAIL OIL & GAS, LLC 208191 HK RANCH 3 KEERAN (5565) PINTAIL OIL & GAS, LLC 254176 HLAVINKA "A" 1 MUSTANG CREEK, EAST (6150) VIPER S.W.D., LLC 162992 HLAVINKA UNIT 4R ARROYO ROJO (BALLARD) EXPRESS OIL CO. 183219 HLAVINKA, RUBY M. 2 ARROYO ROJO (FRIO 6000) EXPRESS OIL CO. 176191 HLAVINKA, RUBY M. 3 ARROYO ROJO (BALLARD) EXPRESS OIL CO. 141844 HNH GU 1 HALLETTSVILLE (8750) CRAWFORD HUGHES OPERATING CO. 262125 HOBBS 1 GATA (WILCOX 11,400 LOWER SD.) TEXAS INDEPENDENT EXPLOR LTD. 262027 HOBBS, B. J. 1 L SPEAKS, N. (3185 SD) CIMARRON ENGINEERING, LLC 074564 HOBBS, B. J. 1 U SPEAKS N. (FRIO UPPER) CIMARRON ENGINEERING, LLC 074573 HOBBS, B. J. 6 PROVIDENT CITY (YEGUA) CIMARRON ENGINEERING, LLC 250628 HOBBS, BILLY JOE 2 SPEAKS ( 1800) CIMARRON ENGINEERING, LLC 200549 HOBBS, BILLY JOE 3 SPEAKS N. (FRIO UPPER) CIMARRON ENGINEERING, LLC 075750 HOBLIT UNIT 1 HENZE, E (YEGUA 4725) RINCON PETROLEUM CORPORATION 267653 HOBLIT UNIT 1 HOLLY, WEST (YEGUA) RINCON PETROLEUM CORPORATION 274173 HODGE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267978 HOERMANN UNIT 1H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 270400 HOERMANN UNIT 2H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 276210 HOFF 1 MISSION VALLEY, W.(WILCOX 10600) XTO ENERGY INC. 228641 HOFF 7 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 220803 HOFF B 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 220639 HOFF B 2 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 216246 HOFF-CALHOUN 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 223530 HOFF, GEORGIA ET AL 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 195043 HOFF, LOUIS 7 MAETZE (3300) UNOCO 002879 HOFFER 1 WILDCAT MASCOT OIL COMPANY 267067 HOFFER 1 TIGER BEND (FRIO 1350) LAVACA RIVER OPERATING CO., LLC 254175 HOFFER 2 TIGER BEND (FRIO 1350) XTO ENERGY INC. 193478 HOFFER, LEO GAS UNIT 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 102241 HOFFER, LEO GAS UNIT 2 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 104739 HOFFER, LEO GAS UNIT 3 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 167063 HOFFMAN RANCH 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 187607 HOLCHAK, STEPHEN J. III ET AL 1 BOYCE (WILCOX A) NOG PRODUCTION & OPERATING LLC 091835 HOLLAND, KATHLEEN ET AL UNIT 1 7 MAETZE (1550 MIOCENE) CORE E & P CORP. 145901 HOLLE, ERWIN ET AL UNIT #1 3 HOUDMAN (PETTUS) BRIGHT NORTH EXPLORATIONS LTD. 153197 HOLLE, ERWIN ET AL UNIT 1 1 HOUDMAN (COLE 1700) BRIGHT NORTH EXPLORATIONS LTD. 125026 HOLLINGSWORTH, L. R. -B- 5 MORALES (FRIO E) ASSOCIATED MINERALS INTEREST 121874


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HOLLMAN UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 261242 HOLMAN CARTWRIGHT 105 MOUNT LUCAS (1200) ROYAL PRODUCTION COMPANY, INC. 272365 HOLT, A. G. 1 HOCKLEY (4720) BURTON, V.C. OIL & GAS, INC. 108202 HOLZHEAUSER "A" 1 EL TORO BUENO (AY-3) HOLLIMON OIL CORPORATION 232704 HOLZMARK 1 HOLZMARK (LULING) TRIDENT CORPORATION 155733 HOLZMARK 1-R HOLZMARK, E. (SLICK) TRIDENT CORPORATION 231492 HOLZMARK 4 HOLZMARK (PETTUS) TRIDENT CORPORATION 195114 HOLZMARK A 1 HOLZMARK, E. (2ND MASSIVE) KALER ENERGY CORP. 210756 HOMER 2 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 215080 HOMEYER 1 KENEDY, CENTRAL (EDWARDS) PIONEER NATURAL RES. USA, INC. 135068 HOMEYER 2H KENEDY, CENTRAL (EDWARDS) PIONEER NATURAL RES. USA, INC. 136025 HOMEYER GAS UNIT #1 3 KENEDY, CENTRAL (EDWARDS) PIONEER NATURAL RES. USA, INC. 255106 HONEY CREEK 2 HONEY CREEK (MIOCENE 1000) PETRA OLEUM CORP. 058083 HOOKS 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268559 HOOKS 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268561 HOOKS 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266867 HOOKS 5 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270007 HOOKS UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266272 HOPE SCHORLEMER 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 267697 HOPE SCHORLEMER 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 272472 HOPE SCHORLEMER 01 03H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 272499 HOPE SCHORLEMER 01 04H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 272500 HOPE SCHORLEMER 01 05H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 272501 HOPE SCHORLEMER 01 06H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 272502 HOPE SCHORLEMER 01 07H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 272503 HOPE SCHORLEMER 01 08H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 272504 HOPE SCHORLEMER 01 09H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 272505 HOPE 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 258428 HOPE 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268665 HOPE 01 03H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268707 HOPE 01 04H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268951 HORADAM BROS. 1 HORADAM (2200 MIOCENE) HENRY HORADAM FAMILY LP 163792 HORSE THIEF HOLLOW GAS UNIT 1 YANTA (WILCOX LOWER) RAMTEX ENERGY LLC 202572 HORSE THIEF 438 1 HYSAW (EDWARDS) HAWTHORN ENERGY PARTNERS, LLC 258652 HOSKINS, W. B. 1 SPEARY (ROEDER 9100) BES, ENVIRONMENTAL SERVICES,INC. 207643 HOTZ, VAL 1 THOMASTON (YEGUA 4800) JTB OIL COMPANY, INC. 158280 HOTZ, VAL GAS UNIT #1 3 THOMASTON (YEGUA 4900) JTB OIL COMPANY, INC. 124421 HOUDMANN 1 LIMES, S. (WILCOX 10750) MARWELL PETROLEUM LTD PARTNRSHIP 115247 HOUDMANN-BUXKAMPER GAS UNIT 2 MAXINE, EAST (8400) MCCOMBS ENERGY, LTD. 183193 HOUDMANN-BUXKAMPER GAS UNIT 3 MAXINE, EAST (8400) MCCOMBS ENERGY, LTD. 225521 HOUDMANN, GUS 1 HOUDMAN (WILCOX 8300) ASPEN ENERGY, INC. 076451 HOUSE MOTHERLODE UNIT 1 1H SUGARKANE (EAGLE FORD) BHP BILLITON PET(TXLA OP) CO 268791 HOUSE 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269406 HOWARD, V. B. 1 OAKVILLE (MID WILCOX 9200) FAULCONER, VERNON E., INC. 169750 HOYT GENTRY GAS UNIT 1 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 217776 HRABOVSK, E.F. GAS UNIT 2 BULLOCK'S CHURCH, S. (12500) XOG OPERATING LLC 177899 HRABOVSKY, E. F. GAS UNIT 2 BULLOCK'S CHURCH, S. (10500) XOG OPERATING LLC 179895 HRABOVSKY, E.F. GAS UNIT 1 BULLOCK'S CHURCH, S. (10,000) XOG OPERATING LLC 126390 HRP 4 THIGPEN (CATAHOULA) RBC ENERGY SERVICES, LLC 270981 HUBER 1 COLETTO CREEK, S. (CATAHOULA) KLOTZMAN, M. S. LEASING CORP. 124449 HUBER 1 RIVERDALE (1900) EAF OIL & GAS CORPORATION 083732


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ HUBER 2 RIVERDALE (1900) EAF OIL & GAS CORPORATION 088629 HUBER 3 RIVERDALE (1900) EAF OIL & GAS CORPORATION 102738 HUBER 4 RIVERDALE (2315) EAF OIL & GAS CORPORATION 104217 HUBER 5 RIVERDALE (2315) EAF OIL & GAS CORPORATION 137990 HUBER UNIT 1 COLETTO CREEK, S. (4820) FOUNDATION OIL COMPANY, INC. 257632 HUBER, A. W. 2 COLOGNE (4800) KLOTZMAN, M. S. EXPLORATION CO. 157509 HUDDLESTON 1 WILDCAT QNK ENERGY,INC. 249091 HUDDLESTON 3 WILDCAT QNK ENERGY,INC. 249619 HUDDLESTON 4 RACKLEY (FRIO) QNK ENERGY,INC. 220076 HUDDLESTON, H. UNIT 1 MORRIS DYE (2370) PLAZA OIL & GAS, INC. 123480 HUDDLESTONE 2 RACKLEY (FRIO) QNK ENERGY,INC. 214824 HUFF GU 1 1 C HUFF ( 199) GREAT BAY OPERATIONS, LLC 055665 HUFF GU 1 1 T HUFF (2800) GREAT BAY OPERATIONS, LLC 055666 HUFF GU 1 5 HUFF (2200) CRIMSON EXPLORATION OPER., INC. 251492 HUFF GU 1 14 HUFF (2400) GREAT BAY OPERATIONS, LLC 076673 HUFF GU 1 15 HUFF (2800) GREAT BAY OPERATIONS, LLC 076674 HUFF GU 2 3 HUFF (2600) GREAT BAY OPERATIONS, LLC 126681 HUFF GU-1 6 HUFF (2900) GREAT BAY OPERATIONS, LLC 035792 HUFF GU-1 17 HUFF (2900) GREAT BAY OPERATIONS, LLC 105902 HUGHES 1 RAY (VICKSBURG-HOCKLEY) RINCON PETROLEUM CORPORATION 266060 HUGHES 2 BEEVILLE, WEST (3540) ENCO EXPLORATION COMPANY 269311 HUGHES 7 BEEVILLE, WEST (3540) ENCO EXPLORATION COMPANY 270477 HUGHES GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 268542 HUGHES, DAN A. 4 FRIENDSHIP CHURCH (3700) RR VENTURES LIMITED PARTNERSHIP 089885 HULQUIST, M. 8 D GANADO (3700) KD ENERGY, LLC 069400 HULTQUIST, M. 8 J GANADO (V-3) KD ENERGY, LLC 036257 HULTQUIST, M. 9 H GANADO (F- 7-B) KD ENERGY, LLC 091852 HUNT 1 SALEM, EAST (2600 MIOCENE) KRISTEN OIL AND GAS, INC. 235711 HUNT, WILLIAM W. JR. 1 D MILLER (5210) KEY ENERGY SERVICES, LLC 112743 HUNTER 1 ALDRETE AND CARBAJAL (WILCOX) WELDER EXPLORATION & PROD., INC. 191961 HUTCHISON, E.B. 1 ARNECKEVILLE (FRIO 2450) B D PRODUCTION CO., INC. 211060 HYDE 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 260386 HYNES 7 PAPALOTE, E. (4885) MAGNUM PRODUCING, LP 111037 HYNES 8 C PAPALOTE, E. (5400) MAGNUM PRODUCING, LP 112065 HYNES - SPILLER 4 LONG MOTT, SOUTH (FRIO, LOWER) RAWHIDE OPERATING, INC. 161262 HYNES -B- B 1 C HYNES RANCH (6700) KIRKWOOD & MORGAN, INC. 002253 HYNES -C- 1 REFUGIO HEARD (1600) COX & COX PRODUCTION CO. 032522 HYNES, J. 1 PAPALOTE (5200) SPINDLETOP DRILLING CO. 120908 HYNES, J. A. 26 PAPALOTE (5200) SPINDLETOP DRILLING CO. 182923 HYNES, J. A. 26 PAPALOTE (5200) SPINDLETOP DRILLING CO. 184129 HYNES, JAMES AGNES 2 MASSINGILL, S. (4590 SD.) SPINDLETOP DRILLING CO. 128350 HYNES, JAMES AGNES 3 MASSINGILL, S. (4590 SD.) SPINDLETOP DRILLING CO. 032945 HYNES, JAMES AGNES 4 MASSINGILL, S. (4600 FB B) SPINDLETOP DRILLING CO. 033039 HYNES, JAMES AGNES 22 MASSINGILL, S. (4625 SD.) SPINDLETOP DRILLING CO. 129347 HYNES, JAMIE -C- 3 REFUGIO HEARD (1600) COX & COX PRODUCTION CO. 068968 HYNES, PHIL A 1 REFUGIO NEW (2000) WALLIS ENERGY, INC. 061074 I. T. TAYLOR, ET. AL. 1 TORO GRANDE (7800 YEGUA) ALTA MESA SERVICES, LP 238236 IAN GAS UNIT 1 SPEARY (ROEDER 9100) STATOIL TEXAS ONSHORE PROP LLC 220694 IBROM 1 SLICK, NE. (7600) PEARL, BILL H. PRODUCTIONS, INC. 128532 IBROM A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268011 IBROM B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268020


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ IDEUS 3 GOTTSCHALT (THIRD YEGUA) NELSON, JAMES L. 182522 IDEUS UNIT 3 SLICK, EAST (2-7600) NELSON, JAMES L. 103293 IDEUS UNIT 3 WEESATCHE, WEST (LULING) NELSON, JAMES L. 161801 IMOGENE HALL UNIT 3 TULETA, WEST (HOCKLEY 3100) REPUBLIC RESOURCES, LLC. 146765 IMOGENE HALL UNIT 6 TULETA, WEST (HOCKLEY 3100) REPUBLIC RESOURCES, LLC. 184229 IMOGENE HALL UNIT 10 TULETA, WEST (HOCKLEY 3100) REPUBLIC RESOURCES, LLC. 188809 INGRAM, RUTH 2 SPEARY (MYHAND 8400) STATOIL TEXAS ONSHORE PROP LLC 038378 IRA HEARD 'A' 19 TOM O'CONNOR (5350 SAND) HILCORP ENERGY COMPANY 274912 IVAS SMITH 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267259 IVAS SMITH 02 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267414 IVIE SWD 2 ROLLEM (1ST REAGAN) TRINITY RIVER ENERGY OPER, LLC 194979 J B DUDERSTADT 2 FRIAR RANCH, S. (CONSOLIDATED) HILCORP ENERGY COMPANY 235319 J WALLIS UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268792 J. B. DUDERSTADT 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 267759 J. C. BYLES UNIT 2 COSDEN, WEST (WILCOX 9500) RINCON PETROLEUM CORPORATION 210314 J. G. RISER 2 TEXAM (WILCOX 8400) HURD ENTERPRISES, LTD. 274174 J. J. O'BRIEN B 8 GRETA (5780) ACOCK/ANAQUA OPERATING CO., LP 260704 J. M. O'BRIEN 'A' 7 GRETA (L- 3) DEWBRE PETROLEUM CORPORATION 271694 J. MOTT 3 YOAKUM (WILCOX 7300) WHITING OIL AND GAS CORPORATION 086434 J. RUHMANN GAS UNIT 1-E 1 KENEDY, SW. (EDWARDS) DEWBRE PETROLEUM CORPORATION 110780 J. RUHMANN GAS UNIT 1-E 2 KENEDY, SW. (EDWARDS) DEWBRE PETROLEUM CORPORATION 144512 J. W. JOHNSON GU 1 B 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 267970 J. W. MCCLELLAND G. U. #2 1 LIMES (WILCOX 9500) AWP OPERATING COMPANY 148924 J. W. MCCLELLAND G. U. #2 1 OAKVILLE (WILCOX CONS.) AWP OPERATING COMPANY 267641 J. WALLIS UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266268 J.C. BYLES UNIT 3 COSDEN, WEST (WILCOX 9500) RINCON PETROLEUM CORPORATION 217810 J.P. GREEN 1 WILDCAT WEJCO, INC. 261685 J.W. MCCLELLAND ET AL UNIT #1 2 LIMES (WILCOX F-1) AWP OPERATING COMPANY 149008 J-HERMANN A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 263739 J-HERMANN B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266683 J-HERMANN C 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264515 J-HERMANN D 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 265750 J-HERMANN E 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267107 JABLONSKI 1 MEYERSVILLE, NORTH (MASSIVE I) B.P. PRODUCTIONS INC. 210238 JABLONSKI UNIT 2 BRANDT (2200) SOCO GAS PROPERTIES 110075 JABLONSKI UNIT 3 BRANDT (WILCOX 7500) MIDSTATES CORPORATION 123280 JACKSON 1 PETTUS LEACH (4390) KOVAR OPERATING, LLC 227390 JACKSON-WILLIAMS 1 JILLIAN (YEGUA) CRIMSON EXPLORATION OPER., INC. 155508 JACKSON-WILLIAMS 2 MORALES, E. (WILCOX) CRIMSON EXPLORATION OPER., INC. 163085 JACKSON-WILLIAMS 3 MORALES, E. (WILCOX) CRIMSON EXPLORATION OPER., INC. 234221 JACKSON, KATHLEEN 1 AUSTIN (NITA) SIANA OIL & GAS 180466 JACOB 1 MISSION VALLEY, W (WILCOX 10200) MILAGRO EXPLORATION, LLC 178817 JACOB 1 MISSION VALLEY, W.(WILCOX 10600) UNION GAS OPERATING COMPANY 172699 JACOB 2 MISSION VALLEY, W (WILCOX 10200) MILAGRO EXPLORATION, LLC 184289 JACOB 3 MISSION VALLEY, W.(WILCOX 10600) MILAGRO EXPLORATION, LLC 187798 JACOB 5 FIFTEEN MILE CREEK (WILCOX) PROGENIES OPERATING LLC 247298 JACOB 6 FIFTEEN MILE CREEK (WILCOX) PROGENIES OPERATING LLC 243880 JACOB GAS UNIT 2 FIFTEEN MILE CREEK (WILCOX) PROGENIES OPERATING LLC 198574 JACOBS 1 HOPE (MIOCENE 2550) MODERN EXPLORATION, INC. 221482 JACOBS 1 WEARDEN (FRIO 4200) RODESSA OPERATING COMPANY 229603 JACOBS A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 263746


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ JACOBS BRUMUND GAS UNIT 2 HELEN GOHLKE, E. (11060) STEPHENS PRODUCTION COMPANY 187539 JACOBS ET AL UNIT 1 ESPERANZA (8800) ZACHRY EXPLORATION, LLC 265012 JACOBS GAS UNIT 1 FIFTEEN MILE CREEK (WILCOX) PROGENIES OPERATING LLC 204033 JACOBS RANCH 1 THE RAPTURE (12700 SAND) XTO ENERGY INC. 185660 JACOBS RANCH 5 THE RAPTURE (WILCOX) XTO ENERGY INC. 238225 JACOBS RANCH 7 THE RAPTURE (WILCOX) XTO ENERGY INC. 276118 JACOBS RANCH 7 THE RAPTURE (WILCOX 12400) XTO ENERGY INC. 237709 JACOBS RANCH 12 THE RAPTURE (ROEDER SAND) XTO ENERGY INC. 226377 JACOBS RANCH 12 THE RAPTURE (WILCOX GLADNEY) XTO ENERGY INC. 232258 JACOBS RANCH 12 THE RAPTURE (12700 SAND) XTO ENERGY INC. 214498 JACOBS, CHARLES 1 HELEN GOHLKE, E. (WILCOX A-1) OMEGA ENERGY, LLC 058702 JACOBS, MATILDA 1 B MISSION VALLEY, WEST (MASSIVE-1) MARWELL PETROLEUM LTD PARTNRSHIP 003431 JAMES GANO 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 267752 JAMES GANO 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 266356 JAMES RODEN GAS UNIT 1 LAVACA RIVER (1700) LAVACA RIVER OPERATING CO., LLC 239422 JAMES STAPLES, JR. 1 RAY (VICKSBURG-HOCKLEY) SYDSON ENERGY, INC. 265533 JANAK 1 WORD, N. (EDWARDS) ALEGRE ENERGY, INC. 224598 JANAK 1H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 271124 JANAK 5H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 272780 JANAK UNIT 3H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 273210 JANAK UNIT 4H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 273528 JANAK, F. W. 1 WORD (EDWARDS) PIONEER NATURAL RES. USA, INC. 121034 JANET BUSH GAS UNIT NO. 1 3 HOLYFIELD FAN MAN SAND (EY-3-B) PINTAIL PRODUCTION CO., INC. 184753 JANK 1 MILBY CREEK (12,900) RAMTEX ENERGY LLC 187502 JANK 1 MISSION VALLEY, W.(WILCOX 10600) MILAGRO EXPLORATION, LLC 200735 JANK 3 MISSION VALLEY, W.(WILCOX 10600) MILAGRO EXPLORATION, LLC 226227 JANSKY UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268776 JANSKY UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266817 JANSSEN 1 WARMSLEY, S. (LOWER MIGURA) LRE OPERATING, LLC 226501 JANSSEN -A- 1 L RUNGE, E. (MIGURA 10850) PROEX ENERGY MANAGEMENT, L.L.C. 062358 JANSSEN -A- 1 U RUNGE, E. (ROEDER, FB-B) PROEX ENERGY MANAGEMENT, L.L.C. 062357 JANSSEN GAS UNIT 1 JANSSEN (9950) OXY USA INC. 109270 JANSSEN GAS UNIT 2 JANSSEN, E. (9750) OXY USA INC. 118124 JANSSEN GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 266143 JANSSEN GAS UNIT 1 A 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 266144 JANSSEN 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268010 JANSSEN-ROSENQUEST GAS UNIT 1 NURSERY, S. (1250) JANSSEN, NELSON 074458 JANSSEN, ESTELLA 1 PENA (YEGUA 4700) B D PRODUCTION CO., INC. 214494 JANSSEN, N. F. 1 A NURSERY, SE. (1100) WARRIOR OIL & GAS CORPORATION 104735 JANSSEN, N. F. 2 NURSERY S. (3150) JANSSEN, NELSON 084405 JANSSEN, NELSON F. 2 NURSERY, SE. (1100) JANSSEN, NELSON 214513 JASCHKE, ARMIN ET AL 2 SCHROEDER (3700) STUART, H. A. 073397 JD MINERALS 1 BIRDIE (WILCOX 11,750) BAY ROCK OPERATING COMPANY 161130 JESSE KLIMITCHEK 1 RENGER (WILCOX 12600) JAMEX, INC. 254202 JIMMIE 1 MISSION VALLEY (2460) UNION GAS OPERATING COMPANY 225394 JM OBRIEN "A" 9 GRETA (6200, SOUTH) ACOCK/ANAQUA OPERATING CO., LP 214405 JO ANN MUELLER 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268658 JOHN FRIEND WEBRE 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269637 JOHNNIE UNIT 1 COLOGNE (4040) KLOTZMAN, M. S. EXPLORATION CO. 244448 JOHNSON GAS UNIT 1 FLINTSTONE (CRETACEOUS CHALK) PIONEER NATURAL RES. USA, INC. 224342 JOHNSON GAS UNIT 2 BULLOCK'S CHURCH, S. (10,000) XOG OPERATING LLC 193444


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ JOHNSON GAS UNIT NO.1 2 DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 260237 JOHNSON TRUST 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 260388 JOHNSON-TSCHIRHART UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268960 JOHNSON, E. L. 1 PALO ALTO, N. (6800) REDWOOD OPERATING, INC. 055134 JOHNSON, ELMER 8 LOLITA (MEGATANE) MCGOWAN WORKING PARTNERS, INC. 060124 JOHNSTON 1 BRIGHT FALCON (FRIO 5160) GULF COAST ACQUISITIONS CO. L.C. 242503 JOHNSTON 1 GAFFNEY, SW. (5200) CHARRO OPERATING, L.L.C. 257338 JOHNSTON 1 TULETA, EAST (LULING) GAITHER PETROLEUM CORPORATION 256366 JOHNSTON 2 GAFFNEY, SW. (5200) CHARRO OPERATING, L.L.C. 261896 JOHNSTON - DIRKS GAS UNIT #1 1 TULETA-WILCOX, S. (MASSIVE 2ND) PETRO-HUNT, L.L.C. 221005 JOHNSTON GAS UNIT #2 1 PAWNEE (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 259707 JOHNSTON GAS UNIT 1 1 PAWNEE (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 244796 JOHNSTON GAS UNIT 2 2 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 260032 JOHNSTON GAS UNIT 3 1 PAWNEE (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 245337 JOLLY, M. E. 1 CORDELE, WEST (2600) INLAND OCEAN, INC. 170641 JONES, F. E. 4 L UNA WEST (6700) OSYKA PERMIAN, LLC 077167 JONES, F. E. 9 UNA WEST (S-SAND) OSYKA PERMIAN, LLC 159796 JORDAN A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264956 JORDAN B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 265194 JOSTES 1 TYNAN, EAST (FRIO 4800) GREAT TEXAS CRUDE INC. 155294 JOSTES 3 TYNAN, EAST (2240) GREAT TEXAS CRUDE INC. 181611 JOWERS, F. 1 AGNES BARBER S. (FRIO 5250) CUMMINS & WALKER OIL CO., INC. 179376 JOY, ETHYL ELLIS ETAL 7 BERCLAIR (2100) CHESNUTT OIL & GAS, INC. 133715 JUDD-TURNER A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267263 JULIA MOTT GAS UNIT NO. 1 7 H YOAKUM (EDWARDS) WHITING OIL AND GAS CORPORATION 215069 JULIA MOTT GAS UNIT NO. 2A 4H YOAKUM (EDWARDS) WHITING OIL AND GAS CORPORATION 178893 JULIA MOTT GAS UNIT NO. 3 5 YOAKUM (WILCOX 7300) WHITING OIL AND GAS CORPORATION 183677 JULIA MOTT GAS UNIT NO.1 8 YOAKUM (EDWARDS) LEWIS PETRO PROPERTIES, INC. 229082 JULIUS TECHNIK 4 HALLETTSVILLE (8750) INLAND OCEAN, INC. 270263 JULIUS TECHNIK (7700) GAS UNIT 1 HALLETTSVILLE (7700) INLAND OCEAN, INC. 118652 JUNKER, EMILIE ET AL UNIT 1 ARNECKEVILLE (YEGUA 5260) NELSON, JAMES L. 121763 JUNKER, EMILIE ET AL UNIT 3 ARNECKEVILLE (YEGUA 5260) NELSON, JAMES L. 078977 JURENA 1 EZZELL, S. (FRIO 2800) MOOSE OPERATING CO., INC. 169360 JUSTEN, ELIZABETH 1 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 225815 JUSTEN, ELIZABETH 2 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 227395 JUSTEN, ELIZABETH 3 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 225663 JUSTEN, ELIZABETH 4 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 226487 JUSTEN, ELIZABETH 5R POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 094192 K-SISTERS GAS UNIT 1H WARMSLEY, S. (10550) LRE OPERATING, LLC 253159 KAHANEK, WM. D., ET AL 1 CAMPBELL CREEK (9300) MASCOT OIL COMPANY 138353 KAINER, CHARLES G. 2 PERSON (EDWARDS) WOOD ENERGY INC. 047846 KAISER UNIT 1H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 272179 KAISER UNIT 4H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 274666 KAISER UNIT 5H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 272596 KALLINA 1H WARMSLEY, S. (10550) WINN EXPLORATION CO., INC. 249119 KALLINA 2H WARMSLEY, S. (10550) WINN EXPLORATION CO., INC. 247729 KALLUS 1 MONT (WILCOX 10,900) TRIO CONSULTING & MANAGEMENT,LLC 275698 KALLUS-ROSE 1 JACK STARR (FRIO 5050) WHITING OIL AND GAS CORPORATION 161067 KAREN KENNEDY UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266284 KAREN KENNEDY UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272854 KAREN KENNEDY UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271125


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ KARL 1H YOAKUM (EDWARDS) WHITING OIL AND GAS CORPORATION 179899 KARNEI UNIT 1 WEESATCHE, WEST (WILCOX 8100) LAGUNA OIL & GAS CORP. 109695 KARNEI, ELLROY UNIT 1 LIONS (CORONA CONSOLIDATED) TECPETROL OPERATING LLC 209155 KARNEI, ELLROY UNIT 2 LIONS (CORONA CONSOLIDATED) TECPETROL OPERATING LLC 212578 KARNEI, ELLROY UNIT 2 LIONS (CORONA, LOWER) TECPETROL OPERATING LLC 209157 KARNEI, NORMAN 1 BRANDT (RECKLAW) ALTA MESA SERVICES, LP 001005 KARNEI, WM. 1 MELROSE, E. (PETTUS) LAGUNA OIL & GAS CORP. 111980 KARNEI, WM. 1 WEESATCHE, WEST (YEGUA) LAGUNA OIL & GAS CORP. 185246 KARON LULING UNIT 39 KARON (LULING) COLUMBUS ENERGY, LLC 151942 KARON LULING UNIT 40 KARON (LULING) COLUMBUS ENERGY, LLC 153674 KARON LULING UNIT 41 KARON (LULING) COLUMBUS ENERGY, LLC 156839 KARON UNIT 1 KARON (LULING) COLUMBUS ENERGY, LLC 115060 KARON UNIT 3 KARON (LULING) COLUMBUS ENERGY, LLC 056522 KARON UNIT 8 KARON (LULING) COLUMBUS ENERGY, LLC 056525 KARON UNIT 11 KARON (LULING) COLUMBUS ENERGY, LLC 063957 KARON UNIT 12 KARON (LULING) COLUMBUS ENERGY, LLC 057553 KARON UNIT 14 KARON (LULING) COLUMBUS ENERGY, LLC 061316 KARON UNIT 18 KARON (LULING) COLUMBUS ENERGY, LLC 090483 KARON UNIT 22 KARON (LULING) COLUMBUS ENERGY, LLC 107984 KARON UNIT 23 KARON (LULING) COLUMBUS ENERGY, LLC 061318 KARON UNIT 25 KARON (LULING) COLUMBUS ENERGY, LLC 056530 KARON UNIT 27 KARON (LULING) COLUMBUS ENERGY, LLC 090484 KARON UNIT 28 KARON (LULING) COLUMBUS ENERGY, LLC 090485 KARON UNIT 29 KARON (LULING) COLUMBUS ENERGY, LLC 056531 KARON UNIT 31 KARON (LULING) COLUMBUS ENERGY, LLC 061319 KARON UNIT 32 KARON (LULING) COLUMBUS ENERGY, LLC 093975 KARON UNIT 36 KARON (LULING) COLUMBUS ENERGY, LLC 083210 KARON UNIT 37 KARON (LULING) COLUMBUS ENERGY, LLC 061321 KARON UNIT 38 KARON (LULING) COLUMBUS ENERGY, LLC 087564 KARON-SLICK UNIT 1 KARON (SLICK) COLUMBUS ENERGY, LLC 002316 KATHLEEN JACKSON UNIT 2 AUSTIN (WILCOX 12,300) SIANA OIL & GAS 223785 KATHLEEN JACKSON UNIT 3 AUSTIN (WILCOX 12,300) SIANA OIL & GAS 242118 KATHLEEN JACKSON UNIT 4 AUSTIN (WILCOX 12,300) SIANA OIL & GAS 229869 KATZFEY 1 TOM LYNE, NE. (HOCKLEY A STRAY) YORK E & P, LLC 229878 KATZFEY 2 ALIMAR (HOCKLEY "C") MCGOWAN WORKING PARTNERS, INC. 160524 KAUP UNIT 1 LARGO NAVIDAD (6560) ZACHRY EXPLORATION, LLC 240638 KEACH GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 257602 KEACH GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 267121 KEACH GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 274140 KEACH GAS UNIT 1 B 3H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 273114 KEAHEY-MEYER 1 T GOTTSCHALT (RECKLAW 7300) NELSON, JAMES L. 113841 KEATING GAS UNIT 1 SAWFISH (EDWARDS) PIONEER NATURAL RES. USA, INC. 233341 KEERAN 1-L KEERAN (6650) SUE-ANN OPERATING, L.C. 162013 KEERAN 1-U KEERAN (6150) SUE-ANN OPERATING, L.C. 162011 KEERAN 4 KOONTZ (4700) PINTAIL OIL & GAS, LLC 215229 KEERAN 5 KOONTZ (5500) PINTAIL OIL & GAS, LLC 130287 KEERAN 6 AGULA CREEEK (FRIO 7010) UNIT PETROLEUM COMPANY 202661 KEERAN 7 KEERAN (5200) PINTAIL OIL & GAS, LLC 215730 KEERAN 14 KOONTZ (4680) PINTAIL OIL & GAS, LLC 269778 KEERAN 19 KOONTZ (4750) PINTAIL OIL & GAS, LLC 275804 KEERAN -A- 2 KEERAN, NORTH (4700) SUNRAY MID-CONTINENT OIL CO. 002381


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ KEERAN "A" 28 KEERAN (3900) MCGOWAN WORKING PARTNERS, INC. 134137 KEERAN "A" 32 KEERAN (3900) MCGOWAN WORKING PARTNERS, INC. 188983 KEERAN "A" 33 KEERAN, NORTH (4000 MIOCENE) MCGOWAN WORKING PARTNERS, INC. 134146 KEERAN "A" 37 KEERAN (3900) MCGOWAN WORKING PARTNERS, INC. 180667 KEERAN "A" 38-C KOONTZ (3200) MCGOWAN WORKING PARTNERS, INC. 142516 KEERAN "A" 38-T KEERAN (5500) MCGOWAN WORKING PARTNERS, INC. 142519 KEERAN ESTATE 7 KOONTZ (4680) PINTAIL OIL & GAS, LLC 121871 KEERAN RANCH 1 H. C. KOONTZ (5460) KLOTZMAN, M. S. EXPLORATION CO. 133303 KEERAN RANCH 2 KEERAN (6400) REMORA MANAGEMENT, LLC 156171 KEERAN RANCH 2 U KEERAN (5830) ZACHRY EXPLORATION, LLC 167015 KEERAN RANCH 9 KEERAN (5500) REMORA MANAGEMENT, LLC 168115 KEERAN RANCH 14 KEERAN REMORA MANAGEMENT, LLC 170693 KEERAN RANCH 17 KEERAN (6040) REMORA MANAGEMENT, LLC 186402 KEERAN RANCH 20 KEERAN (6400) REMORA MANAGEMENT, LLC 190719 KEERAN RANCH 21 KEERAN (6200) REMORA MANAGEMENT, LLC 204461 KEERAN RANCH 16 KEERAN (6600) REMORA MANAGEMENT, LLC 202073 KEERAN RANCH C 2 KEERAN, SOUTHEAST (3350) KLOTZMAN, M. S. EXPLORATION CO. 206934 KEERAN, UNION 10 KEERAN (6400) REMORA MANAGEMENT, LLC 161803 KELLAM 2H SUGARKANE (EAGLE FORD) MARSHFIELD OIL & GAS, LLC 261774 KELLER 1 CANNAN, E. (10300 WILCOX) HUGHES, DAN A. COMPANY, L.P. 217085 KELLERS BAY ST. GAS UNIT 9 KELLERS BAY (8400) CHESAPEAKE OPERATING, L.L.C. 002396 KELLERS BAY STATE GAS UNIT 19 F MAG. BEACH-KELLERS BAY (FOESTER) CHESAPEAKE OPERATING, L.L.C. 047888 KELLEY GAS UNIT 3 SPEAKS, S. (LOWER WILCOX) CANTERA OPERATING, LLC 193142 KELLEY GAS UNIT 4 SPEAKS, S. (LOWER WILCOX) CANTERA OPERATING, LLC 195741 KELLEY GAS UNIT 5 SPEAKS, S. (LOWER WILCOX) CANTERA OPERATING, LLC 226380 KELLEY, MYRA 1 SAWFISH (EDWARDS) PIONEER NATURAL RES. USA, INC. 230259 KELLY GAS UNIT 1 THEIS, SOUTH(SLICK FIRST) WELDER EXPLORATION & PROD., INC. 225891 KELLY UNIT 4 EBEN HABEN (2500) PREMIER MINERALS, INC. 178230 KELLY, D. M. 1 REFUGIO OLD (4800) ACOCK/ANAQUA OPERATING CO., LP 063176 KENEDY CORPORATION GAS UNIT 1 B 3H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 275060 KENEDY CORPORATION GAS UNIT 1 B 4H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 274452 KENEDY JONES UNIT 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 265100 KENEDY JONES UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 265064 KENNE, AUGUST 1 BOYCE (WILCOX C SLICK) WINDWOOD HOLDING, INC. 000975 KENNEDY 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259784 KENNEDY 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 244929 KENNEDY 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 275592 KENNEDY 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 275593 KENNEDY 4 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 275688 KENNEDY 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270339 KENNEDY 5 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 276630 KENNEDY 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 269375 KENNEDY 6 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 276670 KENRUBYLIE A 8H SUGARKANE (AUSTIN CHALK) STATOIL TEXAS ONSHORE PROP LLC 276401 KENRUBYLIE A 8H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 276117 KENRUBYLIE A 9H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 276399 KENRUBYLIE A 10H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 276646 KENRUBYLIE A 11H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 276647 KENTUCKY-FAGAN 7 FAGAN (MATT 2150) ANDERSON OIL LTD. 163811 KENTUCKY-FAGAN 15 FAGAN (2000) ANDERSON OIL LTD. 269650 KERLICK 1 HENZE (WILCOX 9700) LONE OAK ENERGY INC 149700


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ KERLICK GAS UNIT 1 HENZE (WILCOX 10850) WINN EXPLORATION CO., INC. 259030 KERLICK, ELLA LEE 1 HENZE (WILCOX 10850) RAGARS OIL & GAS CO. 052439 KERSTEN 1 BRUSHY CREEK (FRIO 2760) SUNCOAST TECHNICAL SERVICES INC 258005 KERSTEN 1 HOPE (FRIO 3079) SUNCOAST TECHNICAL SERVICES INC 225909 KEUSTER 2 KASPER, S. (KNAVE) DEVON ENERGY PRODUCTION CO, L.P. 146695 KEY 1 BALFOUR (YEGUA 5350) B D PRODUCTION CO., INC. 173018 KEY, J. T. 2 SHERIFF (F-3) FORMATION RESOURCES LLC 152530 KICKENDAHL UNIT 1 1 DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 256985 KILROY-TIPTON 1 ORD (WILCOX J-1 SAND) MAGNUM PRODUCING, LP 132690 KINGERY, F. G. 1 HARRIS (WILCOX-12050) UNIT PETROLEUM COMPANY 105343 KIRCHER 1 TYNAN, EAST (FRIO 4800) GREAT TEXAS CRUDE INC. 157870 KIRK 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 260295 KIRK 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268006 KIRKWOOD 1 SALEM (3750) BEACH OIL & GAS, INC. 177989 KLEINE 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 267704 KLEINE 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 269532 KLIMITCHECK G.U. NO. 1 3 RENGER (WILCOX 12600) CANTERA OPERATING, LLC 224188 KLIMITCHEK 1 RENGER (WILCOX 12600) CANTERA OPERATING, LLC 223532 KLIMITCHEK 1 R SPEAKS ( 2100) FIRSTRIKE ENERGY CORPORATION 225034 KLIMITCHEK 2 RYAN (WILCOX 10,600) CANTERA OPERATING, LLC 223289 KLIMITCHEK 4 RENGER (WILCOX 12600) CANTERA OPERATING, LLC 240435 KLIMITCHEK 4 RYAN (WILCOX 10,600) CANTERA OPERATING, LLC 238777 KLIMITCHEK-HOBBS UNIT 1 LAVACA RIVER (2100) SOUNDLOGIC PROD. & EXPLOR., LLC 216203 KLIMITCHEK, ALTON 2 SPEAKS ( 1800) MOOSE OPERATING CO., INC. 174165 KLIMITCHEK, CARL 2 SPEAKS ( 1800) MOOSE OPERATING CO., INC. 222029 KLIMITCHEK, FRANKLIN 1 SPEAKS (3100) MOOSE OPERATING CO., INC. 173251 KLIMITCHEK, FRANKLIN GAS UNIT 1 SPEAKS (1900 W) MOOSE OPERATING CO., INC. 222024 KLIMITCHEK, JESSE 1 EZZELL, S. (FRIO 2800) ACT OPERATING, INC. 173585 KLIMITCHEK, JESSE 3 SPEAKS ( 2700) MOOSE OPERATING CO., INC. 222021 KLINGEMAN, FRED 1 ATKINSON (KLINGEMAN) LODESTAR PACIFIC CORPORATION 073528 KLINGEMAN, FRED V. -A- 1 ATKINSON (KLINGEMAN) LODESTAR PACIFIC CORPORATION 092120 KLINGMAN, FRED 1 ATKINSON (4250) KEBO OIL & GAS, INC. 054385 KNANDEL GAS UNIT 1 WARMSLEY, S. (10550) LRE OPERATING, LLC 221679 KNANDEL GAS UNIT 2 WARMSLEY, S. (10550) LRE OPERATING, LLC 221807 KNANDEL GAS UNIT 3H WARMSLEY, S. (10550) LRE OPERATING, LLC 229699 KNAPE 1 VIENNA (FRIO 2520) REPUBLIC RESOURCES, LLC. 194873 KNEBEL 1 VIENNA (FRIO 2950) MOOSE OPERATING CO., INC. 168352 KNEBLICK UNIT 1C COLLIER (4000) ZACHRY EXPLORATION, LLC 236042 KNEBLICK UNIT 1T COLLIER (4050) ZACHRY EXPLORATION, LLC 236044 KNIGHT 1 PROVIDENT CITY (4000, EAST) CAMOIL, INC. 154194 KNIGHT #1 1 CANNAN, SOUTH (2300) BRAZOS PRODUCTION SERVICES, INC. 188934 KNIGHT ET AL 1 WILDCAT NORTH SHORE ENERGY, L.L.C. 179408 KNIGHT RANCH 1 CANNAN, SOUTH (10100 WILCOX) WELDER EXPLORATION & PROD., INC. 221776 KNIGHT RANCH 2 CANNAN, SOUTH (10100 WILCOX) WELDER EXPLORATION & PROD., INC. 226046 KNIGHT RANCH 3 CANNAN, SOUTH (10100 WILCOX) WELDER EXPLORATION & PROD., INC. 229624 KNIGHT RANCH 4 CANNAN, SOUTH (10100 WILCOX) WELDER EXPLORATION & PROD., INC. 246677 KNIGHT RANCH 6 CANNAN, SOUTH (10100 WILCOX) WELDER EXPLORATION & PROD., INC. 240762 KNIGHT RANCH 7 CANNAN, SOUTH (10100 WILCOX) WELDER EXPLORATION & PROD., INC. 244756 KNIGHT-TURNBOW GAS UNIT 1 RUDMAN (CANNAN SD. 9720) HUGHES, DAN A. COMPANY, L.P. 231133 KNIPLING GAS UNIT 1 SHERIFF, EAST (8348 FRIO) XOG OPERATING LLC 148749 KNIPLING GAS UNIT 1 SHERIFF, E. (8400 FRIO STRINGER) XOG OPERATING LLC 177933


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ KNIPLING GAS UNIT 2 SHERIFF, EAST (8000) XOG OPERATING LLC 225508 KNIPLING GAS UNIT 3 SHERIFF, EAST (8250) XOG OPERATING LLC 169934 KNIPLING GAS UNIT 3 SHERIFF, EAST (8340) XOG OPERATING LLC 174353 KNIPLING GAS UNIT 3 SHERIFF, EAST (8530) XOG OPERATING LLC 105152 KNOX MILLER 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 265495 KOCUREK GAS UNIT 1 1 PAWNEE (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 247187 KOEMEL 2 GAMBLE GULLY (LULING) DIRKS PETROLEUM COMPANY 221538 KOENIG 2 ARNECKEVILLE, NE. (WX. A) A & D EXPLORATION COMPANY 172012 KOENIG UNIT "B" 1 KOENIG, NORTH (10,800) KLOTZMAN, M. S. EXPLORATION CO. 173789 KOENIG, EDWARD F 1 CUERO, S (BLK. 111 10,000) BOYD & MCWILLIAMS ENERGY GROUP 107713 KOENING 1R ANNA BARRE, N. (YEGUA 5260) A & D EXPLORATION COMPANY 170659 KOERNER UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270442 KOERNER UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 276631 KOERNER UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272134 KOERNER UNIT B 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272094 KOHUTEK 1 NURSERY (3400) GARRISON LTD. 244927 KOHUTEK "B" 2 NURSERY (3400) GARRISON LTD. 257204 KOLAR, E. E. 1 VIENNA (WILCOX, MIDDLE U) DEVON ENERGY PRODUCTION CO, L.P. 004605 KOLAR, ED 5 VIENNA (WILCOX, MIDDLE U) DEVON ENERGY PRODUCTION CO, L.P. 129394 KOLAR, ED 6 VIENNA (WILCOX, MIDDLE U) DEVON ENERGY PRODUCTION CO, L.P. 139118 KOLAR, ED 7 VIENNA (WILCOX, MIDDLE U) DEVON ENERGY PRODUCTION CO, L.P. 143866 KOLAR, ED 8 VIENNA (WILCOX, MIDDLE U) DEVON ENERGY PRODUCTION CO, L.P. 148410 KOLAR, ED 9 VIENNA (WILCOX, MIDDLE U) DEVON ENERGY PRODUCTION CO, L.P. 145603 KOLAR, ED 10 VIENNA (8400) DEVON ENERGY PRODUCTION CO, L.P. 147706 KOLAR, ED 14 VIENNA (WILCOX, MIDDLE U) DEVON ENERGY PRODUCTION CO, L.P. 147341 KOLIBA 1 MCFADDIN, NORTH (5000) STACY, A. D. INC. 140432 KOLLE GAS UNIT 1 COLLETOVILLE CREEK (CATAH. 2450) DESANA DEVELOPMENT CORPORATION 113836 KOLODZIEJZCYK UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 265406 KOLODZIEJZCYK UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270217 KONRAD 1 SALEM (3180) ALTA MESA SERVICES, LP 209668 KOONTZ -C- 2 SARCO CREEK, WEST (4300) CIMAREX ENERGY CO. OF COLORADO 126684 KOONTZ "B" 3 SARCO CREEK, W. (FRIO 4600) CIMAREX ENERGY CO. OF COLORADO 114889 KOONTZ "B" 5 SARCO CREEK (2800) CIMAREX ENERGY CO. OF COLORADO 161798 KOONTZ "C" 3 SARCO CREEK, WEST (4200) CIMAREX ENERGY CO. OF COLORADO 119486 KOOP 1 WESTHOFF (COMBINED ASSOCIATED) BXP OPERATING, LLC 258520 KOOP ET AL GAS UNIT 1 WILDCAT WYNN-CROSBY OPERATING, LTD. 244868 KOOPMAN O1 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 267753 KOOPMANN (ALLOCATION) 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 274000 KORNFUEHRER 1 MISSION VALLEY, W. (WILCOX G) HURD ENTERPRISES, LTD. 211682 KORNFUEHRER 1 MISSION VALLEY, W.(WILCOX 10600) HURD ENTERPRISES, LTD. 211709 KORNFUEHRER 2 C MEYERSVILLE (MASSIVE IV) HURD ENTERPRISES, LTD. 216611 KORNFUEHRER 2 T MISSION VALLEY, W.(WILCOX 10600) HURD ENTERPRISES, LTD. 215261 KOSUB UNIT 1H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 266703 KOSUB UNIT 2H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 266864 KOSUB UNIT 3H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 266846 KOSUB UNIT 4H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 268754 KOSUB UNIT 5H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 268734 KOTARA-JANYSEK 3 PERSON (EDWARDS) BLACKBRUSH O & G, LLC 157823 KOTARA-JANYSEK UNIT 1 PERSON (EDWARDS) BLACKBRUSH O & G, LLC 052819 KOTARA-RIDLEY UNIT 1H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 266693 KOTARA-RIDLEY UNIT 2H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 266692


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ KOTARA-RIDLEY UNIT 3H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 266687 KOTARA-RIDLEY UNIT 4H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 266752 KOTARA-RIDLEY UNIT 5H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 268744 KOTARA-RIDLEY UNIT 6H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 268746 KOTARA-RIDLEY UNIT 7H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 268832 KOWALIK 228-1 1 SUGARKANE (CRETACEOUS) MARATHON OIL EF LLC 246035 KOWALIK 228-1R 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 265799 KOWALIK 228-1R AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 275704 KOZIELSKI UNIT 1H SUGARKANE (EAGLE FORD) SABINE OIL & GAS CORPORATION 271603 KOZIELSKI UNIT 2H SUGARKANE (EAGLE FORD) SABINE OIL & GAS CORPORATION 271719 KOZIELSKI UNIT 3H SUGARKANE (EAGLE FORD) SABINE OIL & GAS CORPORATION 271729 KOZIELSKI UNIT 4H SUGARKANE (EAGLE FORD) SABINE OIL & GAS CORPORATION 271727 KRAMER #3 1 LITTLE KENTUCKY (FRIO 5800) FFA PETROLEUM SERVICES, INC. 054128 KRANER UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 264872 KRANER UNIT 'B' 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 264927 KRANER UNIT 'B' 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 265820 KRANER UNIT A 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 276674 KRANER UNIT B 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 274450 KRANER UNIT B 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275078 KRANER UNIT B AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 275849 KRANER UNIT B AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 275701 KRAUSE 1 DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 255061 KRAUSE 1 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 272581 KRAUSE 2 YOUGEEN (5500) WELDER EXPLORATION & PROD., INC. 259319 KRAUSE B 1 DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 257509 KRAUSE GU1 A 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 269693 KRISTEK GAS UNIT 1 WORD, N. (EDWARDS) BOPCO, L.P. 091617 KRISTEK GAS UNIT 2 WORD, N. (EDWARDS) BOPCO, L.P. 131575 KRISTEK GAS UNIT 3 WORD, N. (EDWARDS) BOPCO, L.P. 145193 KRISTEK GAS UNIT 4 WORD, N. (EDWARDS) BOPCO, L.P. 145250 KRISTEK GAS UNIT 5 WORD, N. (EDWARDS) BOPCO, L.P. 227841 KRUCIAK 1 PERSON (EDWARDS) BLACKBRUSH O & G, LLC 157098 KRUCIAK, BEN L. -A- 1 PERSON (EDWARDS) BLACKBRUSH O & G, LLC 055751 KRUEGER 1 HIGHLANDER (CARRIZO) BAY ROCK OPERATING COMPANY 262002 KRUEGER UNIT 1 COTTONWOOD CREEK, S. (ROEDER) TRANS-PECOS RESOURCES, INC. 149162 KRUPALA, E. J. GAS UNIT 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 091825 KRUPALA, E. J. GAS UNIT 2 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 101781 KRUPALA, E. J. GAS UNIT 3 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 117970 KRUPALA, E.J. GAS UNIT 1 WORD, N. (5800) CAPITAL STAR OIL & GAS, INC. 275526 KRUPALA, E.J. GAS UNIT 4 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 152748 KRUSE, NICHOLAUS 2 CLAYTON (SLICK 6450) GREATER SOONER HOLDINGS, INC. 150403 KUBECKA 3 FRANCITAS, SOUTH (10,100) CHESAPEAKE OPERATING, L.L.C. 234930 KUBECKA, P. F. HEIRS GAS UNIT 1 CORDELE, EAST (2900) CORDELE DEVELOPMENT CORPORATION 263679 KUBENA GAS UNIT 1 WORD, N. (EDWARDS) BOPCO, L.P. 093566 KUBENA GAS UNIT 2 WORD, N. (EDWARDS) BOPCO, L.P. 140335 KUBENA GAS UNIT 3 WORD, N. (EDWARDS) BOPCO, L.P. 145248 KUBENA WILCOX GAS UNIT 4 WILDCAT BOPCO, L.P. 165387 KUBENA WILCOX GAS UNIT 4 HALLETSVILLE (SIMMONS) BOPCO, L.P. 165291 KUENSTLER 1 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 209460 KUESTER 1 BRUSHY CREEK, S. (WILCOX 13900) CAMOIL, INC. 232905 KUESTER 1 KASPER, S. (KNAVE) DEVON ENERGY PRODUCTION CO, L.P. 144275


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ KUESTER 1 TERRYVILLE, W. (YEGUA 5200) CRAWFORD HUGHES OPERATING CO. 207488 KUESTER OCHOA 4 HOPE (WILCOX MASSIVE) BROWN, GEO. R PARTNERSHIP,LP,THE 228308 KUESTER UNIT 1H YOAKUM (EDWARDS) ABRAXAS PETROLEUM CORPORATION 162215 KUESTER UNIT 2H YOAKUM (EDWARDS) ABRAXAS PETROLEUM CORPORATION 169016 KUESTER-OCHOA 1 BRUSHY CREEK (WILCOX -S-1-11200) BROWN, GEO. R PARTNERSHIP,LP,THE 189325 KUESTER-OCHOA 2 BRUSHY CREEK (WILCOX -S-1-11200) BROWN, GEO. R PARTNERSHIP,LP,THE 191828 KULAWIK 2 YORKTOWN (WILCOX 11,000 LO.) DEVON ENERGY PRODUCTION CO, L.P. 150592 KULAWIK 3 YORKTOWN (WILCOX 11,000 LO.) DEVON ENERGY PRODUCTION CO, L.P. 177060 KULAWIK 3 YORKTOWN, SOUTH (ROEDER) DEVON ENERGY PRODUCTION CO, L.P. 163101 KUNDE UNIT A G 1 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 258555 KUNDE UNIT A G 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 225297 KUNDE UNIT A G 3 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 258556 KUNDE UNIT A G 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 249741 KURETSCH, RAYMOND 1A GANADO, WEST PREMIER NATURAL RESOURCES, LLC 177176 KURETSCH, RAYMOND 2A GANADO, WEST (5150) PREMIER NATURAL RESOURCES, LLC 180960 KURTZ 1 CONQUISTADOR (JANAK SAND) SEDONA OIL & GAS CORP. 255395 KYLE 1 WELDER RANCH (FRIO 3550) RINCON PETROLEUM CORPORATION 261776 KYLE 1 WELDER RANCH (5300) RINCON PETROLEUM CORPORATION 257860 L RANCH 1 L. RANCH, NORTH (8720) HURD ENTERPRISES, LTD. 274289 L. KASKIE GAS UNIT 1 PROVIDENT CITY (WILCOX 13,800) NEWFIELD EXPLORATION COMPANY 183121 L. KASKIE GAS UNIT 2 PROVIDENT CITY (WILCOX 7) NEWFIELD EXPLORATION COMPANY 221339 L. KASKIE GAS UNIT 2 PROVIDENT CITY (WILCOX 13,800) NEWFIELD EXPLORATION COMPANY 190667 L. M. DIEMER 4 HEYSER (F-34) OMEGA ALPHA RESOURCES, LLC 257304 L. M. DIEMER 4 HEYSER (F-36) OMEGA ALPHA RESOURCES, LLC 257502 L. M. DIEMER 4 HEYSER (F-37) OMEGA ALPHA RESOURCES, LLC 257306 L. M. DIEMER 4 HEYSER (F-38) OMEGA ALPHA RESOURCES, LLC 257309 L. M. DIEMER 4 HEYSER (F-39) OMEGA ALPHA RESOURCES, LLC 257314 L. M. DIEMER 4 HEYSER (F-40) OMEGA ALPHA RESOURCES, LLC 257315 L. M. DIEMER 4 HEYSER (F-41) OMEGA ALPHA RESOURCES, LLC 257299 L. M. DIEMER 4 HEYSER (F-44) OMEGA ALPHA RESOURCES, LLC 257503 L. M. DIEMER 4 HEYSER (F-47) OMEGA ALPHA RESOURCES, LLC 257504 L. RANCH CO. -A- 43 F LOLITA (MINER SAND) MCGOWAN WORKING PARTNERS, INC. 063392 L.A. NORDAN-THOS. O'CONNOR EST 14 TOM OCONNOR (5425 SAND) T-C OIL COMPANY, LLC 261902 L.A. NORDAN-THOS. O'CONNOR EST 21 TOM OCONNOR (5680) T-C OIL COMPANY, LLC 263021 L.A. SILLIMAN 17 GANADO (F-18) KD ENERGY, LLC 272902 L.B. HAILEY UNIT 3H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 268795 LA QUE SE FUE 1 MATTHEW GEORGE (FRIO 1980) SLIMHOLE ENGINEERING CO., INC. 148202 LA ROSA GAS UNIT 28 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 094307 LA ROSA GAS UNIT 32 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 133285 LA ROSA UNIT 12 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 151068 LA ROSA UNIT 20 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 125934 LA ROSA UNIT 22 LA ROSA (5300) REMORA MANAGEMENT, LLC 052613 LA ROSA UNIT 24 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 083006 LA ROSA UNIT 26 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 151667 LA ROSA UNIT 27 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 151666 LA ROSA UNIT 39 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 151668 LA ROSA UNIT 41 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 153463 LA ROSA UNIT 43 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 156848 LA ROSA UNIT 44 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 159429 LA ROSA UNIT 45 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 162114 LA ROSA UNIT 46 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 187879


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ LA ROSA UNIT 47 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 179328 LA ROSA UNIT 48 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 192706 LA ROSA UNIT 49 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 188460 LA ROSA UNIT 50 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 219475 LA ROSA UNIT 51 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 195993 LA ROSA UNIT 52 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 198744 LA ROSA UNIT 54 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 224340 LA ROSA UNIT 56 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 231112 LA SILLIMAN 16 GANADO (V-5) KD ENERGY, LLC 273439 LABUS, J. V. 3 PANNA MARIA (EDWARDS) GULFTEX ENERGY III, LP 133296 LACKEY UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 264289 LACKEY UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266488 LAKE PLACEDO SWD 1 PLACEDO (5770) ACOCK/ANAQUA OPERATING CO., LP 262418 LAKE SCHWARTZ A 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 271716 LAKE SCHWARTZ A 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 271195 LAKESIDE 1 EL TORO (5250) SUE-ANN OPERATING, L.C. 194106 LAMB UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268978 LAMBERT 4 TOM OCONNOR (3500) DEVON ENERGY PRODUCTION CO, L.P. 004411 LAMBERT G 9 TOM OCONNOR (5100, EAST) H & D OPERATING COMPANY 004464 LAMBERT G 12 TOM OCONNOR (5300, EAST) H & D OPERATING COMPANY 004496 LAMBERT GAS UNIT 4 REFUGIO-FOX (GRIFFITH D) HILCORP ENERGY COMPANY 225897 LAMBERT GAS UNIT 53 TOM OCONNOR (5100, EAST) HILCORP ENERGY COMPANY 260642 LAMBERT GAS UNIT 70 TOM O'CONNOR (4830) HILCORP ENERGY COMPANY 261056 LAMBERT GAS UNIT 71 TOM OCONNOR (5050, EAST) HILCORP ENERGY COMPANY 202726 LAMBERT GAS UNIT 85 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 244412 LAMBERT GAS UNIT 87 GRETA, DEEP (5500) HILCORP ENERGY COMPANY 225225 LAMBERT GAS UNIT 109 TOM O'CONNOR (4925) HILCORP ENERGY COMPANY 206528 LAMBERT GAS UNIT 111 GRETA (L- 4) HILCORP ENERGY COMPANY 263368 LAMBERT GAS UNIT 118 GRETA (L- 6 WEST) HILCORP ENERGY COMPANY 227198 LAMBERT GAS UNIT 125 TOM OCONNOR (5300, EAST) HILCORP ENERGY COMPANY 234396 LAMBERT GAS UNIT 130 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 268041 LAMBERT GAS UNIT 150 TOM OCONNOR (7930) HILCORP ENERGY COMPANY 267700 LAMBERT GAS UNIT 213 TOM OCONNOR (7930) HILCORP ENERGY COMPANY 234216 LAMBERT GAS UNIT 213 TOM OCONNOR (7930) HILCORP ENERGY COMPANY 274195 LAMBERT GAS UNIT 214 TOM OCONNOR (7930) HILCORP ENERGY COMPANY 260633 LAMBERT GAS UNIT H 32 TOM OCONNOR (5615) HILCORP ENERGY COMPANY 259862 LAMBERT GAS UNIT H 61 TOM OCONNOR (5050, EAST) HILCORP ENERGY COMPANY 219870 LAMBERT GAS UNIT H109 GRETA (L-15) HILCORP ENERGY COMPANY 261171 LAMBERT-ROSE 2 REFUGIO-FOX (1675) HILCORP ENERGY COMPANY 262874 LAMBERT-WOOD 1 C SARCO CREEK (4700) CIMAREX ENERGY CO. OF COLORADO 123846 LAMBERT-WOOD 7 SARCO CREEK (4700) CIMAREX ENERGY CO. OF COLORADO 134154 LAMBERT, J. A. 8 REFUGIO OLD (2400) WALLIS ENERGY, INC. 063138 LAMBERT, J. A. 9 REFUGIO NEW (1900) WALLIS ENERGY, INC. 066561 LAMBERT, M. F. 31 TOM OCONNOR (5680) HILCORP ENERGY COMPANY 061689 LAMBERT, M. F. 62 H REFUGIO-FOX (2600) HILCORP ENERGY COMPANY 146091 LAMBERT, M. F. 66 TOM OCONNOR (3900) HILCORP ENERGY COMPANY 209879 LAMBERT, M. F. 134 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 156622 LAMBERT, M. F. 155 TOM OCONNOR HILCORP ENERGY COMPANY 231079 LAMBERT, M. F. 211 WILDCAT HILCORP ENERGY COMPANY 221136 LAMBERT, M. F. B 1 GRETA (2950) HILCORP ENERGY COMPANY 182636 LAMBERT, M. F. B 2D REFUGIO-FOX (1675) HILCORP ENERGY COMPANY 183403


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ LAMBERT, M. F. B 2F WILDCAT HILCORP ENERGY COMPANY 189310 LAMBERT, M. F. B 2F REFUGIO-FOX (5500) HILCORP ENERGY COMPANY 159376 LAMBERT, M. F. G 2 TOM OCONNOR (4950) HILCORP ENERGY COMPANY 058823 LAMBERT, M. F. G 8 TOM OCONNOR (5100, EAST) HILCORP ENERGY COMPANY 038501 LAMBERT, M. F. G 13 TOM OCONNOR (4950) HILCORP ENERGY COMPANY 036882 LAMBERT, M. F. H 97 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 093703 LAMBERT, M. F. H133 REFUGIO-FOX (2480) HILCORP ENERGY COMPANY 173335 LAMBERT, M. F. H133-T SIENE BEAN (5150) HILCORP ENERGY COMPANY 162255 LAMBERT, M. F. U 11 GRETA (L-14 SOUTH) HILCORP ENERGY COMPANY 001855 LAMBERT, M. F. U 86 GRETA (4400) HILCORP ENERGY COMPANY 067677 LAMBERT, M.F. H 64 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 214261 LAMBERT, MARY F. "E" E 3 TOM O'CONNOR (4830) HILCORP ENERGY COMPANY 117390 LAMPLEY 1R KEMPER, E. (1775) GEISER OPERATING, INC. 272967 LAMPLEY 1R KEMPER, EAST (5650) GEISER OPERATING, INC. 268084 LANDER, O. M. 6 HEYSER (GRETA STRINGER) MCGOWAN WORKING PARTNERS, INC. 134113 LANDER, O. M. -B- 16 HEYSER, EAST (8040) MCGOWAN WORKING PARTNERS, INC. 116530 LANDER, O. M. "A" 1 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 055330 LANDER, O.M. -B- 18 HEYSER, EAST (8350) MCGOWAN WORKING PARTNERS, INC. 125123 LANDGREBE 1 BULLOCK'S CHURCH, S. (10,000) WILLIAMSON OIL & GAS, INC. 198018 LANDGREBE 2 BRANDT, N. (REKLAW) BRITANCO, L.L.C. 144046 LANDGREBE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 265523 LANDGREBE, ERWIN 1 BRANDT (RECKLAW) BRITANCO, L.L.C. 143109 LANE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266390 LANE B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266391 LANGE, LARRY 1 CARTER THOMAS (THIRD YEGUA) MODERN EXPLORATION, INC. 203115 LANGHAM 3 FT. MERRILL, NORTH (11800) JAMEX, INC. 262438 LANGHAM 4 FT. MERRILL, NORTH (11800) JAMEX, INC. 264844 LANGHOFF UNIT A 1H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 271117 LANGHOFF UNIT A 2H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 275763 LANGHOFF UNIT A 3H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 275165 LANGHOFF UNIT A 4H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 276302 LANGHOFF UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266701 LANGLEY UNIT 1H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 273529 LANGTRY-SHIRLEY TRUST 1 MINERAL, WEST (7900) CONTINENTAL OPERATING CO. 256871 LANIK B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 259780 LANIK UNIT 1 1 DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 256982 LARAMI, LTD 1 JOBAR (YEGUA) DEWBRE PETROLEUM CORPORATION 192591 LAROSA UNIT 16 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 137173 LAROSA UNIT 19 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 149158 LAROSA UNIT 22 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 149017 LAROSA UNIT 30 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 122254 LAROSA UNIT 36 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 149212 LAROSA UNIT 37 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 149211 LAROSA UNIT 38 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 151047 LASCA BUTLER SEARCY TRUST 1 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 258558 LASCA BUTLER SEARCY TRUST 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 254301 LAWSON 1 CABEZA CREEK, S. (COOK MT E) DEWBRE PETROLEUM CORPORATION 237632 LAYDEN-YENDREY GAS UNIT 2 BIG 12 (11,900) SUE-ANN OPERATING, L.C. 188473 LEACH 1 BIG 12 (YEGUA AY-3) EVEREST RESOURCE COMPANY 264530 LEDWIG GAS UNIT 1 YORKTOWN, NE. (WILCOX 8950) CHALLENGER OIL 118985 LEE 1 NURSERY (3500) PROPERTY DEVELOPMENT GROUP, INC. 255819


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ LEE BROTHERS 1 CARMICHAEL (3750) NORDSTRAND ENGINEERING, INC. 245395 LEE, KATHRYN 1-L LOST BRIDGE (GERMER) NORDSTRAND ENGINEERING, INC. 137922 LEE, KATHRYN 1-U LOST BRIDGE (MELTON) NORDSTRAND ENGINEERING, INC. 137920 LEHMAN & RICHARDS 1 POESTA CREEK (2750) SIDELINE ENERGY INC. 127769 LEMKE 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 263952 LEMMONS GAS UNIT 1 C WARMSLEY (MACKHANK) LRE OPERATING, LLC 215581 LEMMONS GAS UNIT 1 T WARMSLEY (VAUGHN) LRE OPERATING, LLC 215583 LEMMONS GAS UNIT 2 CHRISTMAS, SOUTH (GANSON) LRE OPERATING, LLC 217992 LEMMONS GAS UNIT 2 WARMSLEY (VAUGHN) LRE OPERATING, LLC 238779 LENNOX, EMMA B. -A- 2 C KITTY BURNS ( QUEEN CITY) MARWELL PETROLEUM LTD PARTNRSHIP 048483 LENTZ 1 C VIC-WITT (3300) DOUBLE PLAY OIL & GAS, INC 215071 LENTZ 1 T THOMASTON (YEGUA 5230) DOUBLE PLAY OIL & GAS, INC 215073 LENTZ, E. M. B 1 ELOISE (JUDI 5700) RAWHIDE OPERATING, INC. 158611 LENTZ, EVELYN 1 ELOISE, SW. (KERFOOT 6040) CORUM PRODUCTION COMPANY 245574 LENTZ, ZAC 1 ELOISE, NW. (6200) JMM ENERGY LLC 125368 LEON BARNES G U 1 1 JANSKY (WILCOX 10700) VALENCE OPERATING COMPANY 077826 LEONARD KUENSTLER GAS UNIT 1 STINGRAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 225004 LEPPARD GU 2 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 221103 LEPPARD, J. A. 1 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 064753 LESKE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264465 LESLIE PLOEGER NO. 2 GU 2 BORCHERS DEEP (FREEMAN SAND) XTO ENERGY INC. 199088 LEWIS 1 POESTA CREEK (2750) WELDER EXPLORATION & PROD., INC. 211794 LEWIS 2 MONSON (QUEEN CITY) MILAGRO EXPLORATION, LLC 206853 LEWIS "A" 1 WILDCAT WYNN-CROSBY OPERATING, LTD. 207034 LEWIS "A" 2 SOLEBERG (WILCOX) WYNN-CROSBY OPERATING, LTD. 220549 LEWIS, K. M. UNIT 2 C TERRELL POINT (3900) A & D EXPLORATION COMPANY 004308 LEY 1H DE WITT (EAGLE FORD SHALE) MARATHON OIL EF LLC 272175 LFW 3 DINERO, W. (4300) WELDER EXPLORATION & PROD., INC. 257631 LINDER,RAY 1 BALFOUR, NE. (YEGUA 4950) EVEREST RESOURCE COMPANY 223865 LINDHOLM 1 MAXINE, EAST (MASSIVE, LO.) BRITANCO, L.L.C. 071091 LINDHOLM, CHARLES 1 MAXINE, NE (8000) MAGNUM PRODUCING, LP 052283 LINVILLE, OSCAR 3 I MCFADDIN, NORTH (5550) TEXAS GULF PROD. CO. 002849 LISA MARIE 1 UNA WEST (K-SAND) PHERE OPERATING INC 266003 LISKA 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266426 LISKA 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 275061 LISKA 01 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 275122 LISKA 01 04H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 275062 LISKA 01 05H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 275065 LISKA 01 06H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 274643 LISKA 01 07H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 274644 LISKA 01 08H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 274645 LISKA 01 09H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 274646 LISKA 01 11H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 274647 LITTLE JOHN 1 C BEEVILLE, NORTH (HOCKLEY) ENCO EXPLORATION COMPANY 232156 LITTLETON, J. B. 1 U EL TORO (5700) OSYKA PERMIAN, LLC 133269 LIVE BEE UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 269843 LIVE BEE UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270917 LIVE BEE 02 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269846 LIVE BEE 03 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268917 LIVE OAK PARTNERS 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 270526 LIVE OAK PARTNERS 02 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 272426


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ LIVE OAK PARTNERS 02 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 272398 LIVE OAK PARTNERS 02 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 272423 LIVE OAK SWD 1 OAKVILLE (WILCOX CONS.) TRISUN ENERGY SERVICES LLC 271623 LIVINGSTON GAS UNIT 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259781 LIVINGSTON GAS UNIT 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268999 LMP KESELING 1 YORKTOWN (WILCOX 10,800) MAGNUM PRODUCING, LP 187004 LOCKWOOD, M. G. 1 SAN ANTONIO BAY, N. (D-5) CREST PETROLEUM, LLC 112255 LOCKWOOD, M. G. 2 L SAN ANTONIO BAY, N. (D-3) CREST PETROLEUM, LLC 004051 LOCKWOOD, M. G. 2 U SAN ANTONIO BAY, N. (D 1-2) CREST PETROLEUM, LLC 004049 LOCKWOOD, M. G. 3 L SAN ANTONIO BAY, N. (E-1) CREST PETROLEUM, LLC 004054 LOCKWOOD, M. G. 3 U SAN ANTONIO BAY, N. (D-3) CREST PETROLEUM, LLC 004052 LOEST 2 POWDER RIVER (CONSOLIDATED) GOLIAD HOLDINGS, LLC 240719 LONG 8 FRED LONG (HOCKLEY 3850) LONG, FRED E. 197467 LONG 15 FRED LONG (HOCKLEY 3850) ENCO EXPLORATION COMPANY 261008 LONG 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 258285 LONG 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 270364 LONG 01 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269195 LONG 01 04H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 270584 LONGS RIVER 1 WEARDEN RANCH (3750) O'TOOL OIL & GAS, LLC 266679 LOOS UNIT 1H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 271118 LOOS UNIT 2H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 276275 LOOS UNIT 3H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 276303 LOOS UNIT 8H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 276293 LOUISE STRAUBE 02 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 266430 LOVE GAS UNIT 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 232816 LOVE UNIT 1H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 263665 LOVE UNIT 2H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 263666 LOVE UNIT 4H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 266814 LOVE UNIT 5H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 266709 LOVE UNIT 6H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 266710 LOVEL A BLAIN III GAS UNIT 4 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 228086 LOVEL A BLAIN III GAS UNIT 5 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 238228 LOVEL A. BLAIN III GAS UNIT 3 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 122511 LOVETT 1 FRANCITAS (F-15-A) GARRISON LTD. 250389 LOVETT EST. 3 FRANCITAS (F-16) OIL WELL BUYERS CORP. 054940 LOVETT EST. 4 FRANCITAS (FRIO 8600) OIL WELL BUYERS CORP. 054941 LOVETT ESTATE 1 FRANCITAS (-A- SAND) OIL WELL BUYERS CORP. 001583 LOWER YEGUA EAST 1 HOPE (MIOCENE 2660) BIG LAKE CORPORATION 217065 LP-BUTLER A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 263747 LP-BUTLER B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264152 LUBINSKI 1 HOUDMAN (WILCOX 8300) KEBO OIL & GAS, INC. 236289 LUBINSKI 2 HOUDMAN (WILCOX 8300) KEBO OIL & GAS, INC. 257228 LUCAS, R. 1 HINNANT (5500) ROYAL PRODUCTION COMPANY, INC. 261924 LUCAS, R. 2 HINNANT (5500) ROYAL PRODUCTION COMPANY, INC. 264393 LUDE 1 LIONS (CORONA CONSOLIDATED) TECPETROL OPERATING LLC 218199 LUKER 2 BRANDT (WILCOX 9800) U1 RANCH OIL 225148 LUKER 2-C WEESATCHE, NE. (WILCOX) HURD ENTERPRISES, LTD. 186421 LUKER 2-T WEESATCHE, NE. (HOLT FB A) HURD ENTERPRISES, LTD. 185552 LUKER 3 T WEESATCHE, NE. (HOLT FB A) HURD ENTERPRISES, LTD. 188974 LUKER 3-C WEESATCHE, NE. (WILCOX) HURD ENTERPRISES, LTD. 186395 LUKER, B. J ET AL 1 HARREL (SLICK) U1 RANCH OIL 134123


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ LUKER, B. J. 1 WESER (RECKLAW 7560) U1 RANCH OIL 177976 LUKER, B.J. 1 BRANDT, S. (BRANDT 7485) U1 RANCH OIL 098998 LULING-BOYCE A 25 BURNELL (SLICK) TRINITY RIVER ENERGY OPER, LLC 037402 LUNA UNIT 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 265151 LUNA UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 259817 LUNA UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268976 LUNA UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275446 LUNA UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275449 LUNA UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275248 LUNA UNIT 7H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 276261 LUNA UNIT 8H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 276279 LUNDSCHEN-NEESE 1 WILDCAT CIMAREX ENERGY CO. OF COLORADO 163367 LYMAN A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267045 LYNE GAS UNIT -A- 3 CHARLINE (FORNEY) MCCOMBS ENERGY, LTD. 101345 LYNE GAS UNIT "A" 6 CHARLINE (FORNEY) MCCOMBS ENERGY, LTD. 180277 LYNE, T. J. 9 TOM LYNE (QUEEN CITY) HILCORP ENERGY COMPANY 068693 LYNE, T. J. 12 TOM LYNE, N. (WILCOX 9350) HILCORP ENERGY COMPANY 049721 LYNE, T. J. 18 TOM LYNE, N. (WILCOX 9350) HILCORP ENERGY COMPANY 178507 LYNE, T. J. 19 TOM LYNE, N. (REAGAN -B-) HILCORP ENERGY COMPANY 179301 LYNE, T. J. 19 TOM LYNE, N. (WILCOX 9350) HILCORP ENERGY COMPANY 149877 LYNE, T. J. 21 TOM LYNE (LULING 8800) HILCORP ENERGY COMPANY 265640 LYNE, T. J. 21 TOM LYNE, N. (WILCOX 9350) HILCORP ENERGY COMPANY 152757 LYNE, T. J. 22LT TOM LYNE, N. (WILCOX 10,000) HILCORP ENERGY COMPANY 155286 LYNE, T. J. 22UT TOM LYNE, N. (WILCOX 9350) HILCORP ENERGY COMPANY 155997 LYNE, T. J. 23 TOM LYNE, N. (WILCOX 9350) HILCORP ENERGY COMPANY 155884 LYNE, T. J. 24 TOM LYNE, N. (WILCOX 9350) HILCORP ENERGY COMPANY 160545 LYNE, T. J. 27 TOM LYNE (QUEEN CITY) HILCORP ENERGY COMPANY 266109 LYNE, T. J. - SOG 3 TOM LYNE, N. (WILCOX 10,700) HILCORP ENERGY COMPANY 190179 LYNE, T. J. -A- 15 CLAY WEST (MASSIVE WILCOX 10600) HILCORP ENERGY COMPANY 107072 LYNE, T. J.- SOG 2 TOM LYNE (QUEEN CITY) HILCORP ENERGY COMPANY 203266 LYNE, T. J.-PVOG 6 TOM LYNE (QUEEN CITY) HILCORP ENERGY COMPANY 191198 LYNE, T. J.-PVOG 8 TOM LYNE (QUEEN CITY) HILCORP ENERGY COMPANY 193192 LYNE, T. J.-SOG 1 TOM LYNE, N. (WILCOX 10,700) HILCORP ENERGY COMPANY 192422 LYNE, T.J. 17 TOM LYNE, N. (REAGAN -A-) HILCORP ENERGY COMPANY 146999 LYNE, T.J. 17 TOM LYNE, N. (REAGAN -B-) HILCORP ENERGY COMPANY 119993 LYNE, T.J. 20LT TOM LYNE, N. (WILCOX 10,000) HILCORP ENERGY COMPANY 151437 LYNE, T.J. 20UT TOM LYNE, N. (WILCOX 9350) HILCORP ENERGY COMPANY 151659 LYNE, T.J. - SOG 1 TOM LYNE, N. (WILCOX 10,000) HILCORP ENERGY COMPANY 203353 LYNES, J. R. ET AL 1 SPRING CREEK, N. (COLE) NEW HORIZON INVESTMENTS LTD. 055375 LYONS 2 SPEARY (2600) CRAWFORD HUGHES OPERATING CO. 161574 L2 RANCH 1 SINGLETON (1900) PETROLEUM MANAGEMENT, INC. 102743 M & O GAS UNIT 8 F GANADO (F-16) KD ENERGY, LLC 036262 M & O GAS UNIT 8 G GANADO (F-18) KD ENERGY, LLC 036258 M & O GAS UNIT (OH8) 17 GANADO (3700) KD ENERGY, LLC 220112 M L & I GAS UNIT 20 F GANADO (F- 4-C SEG 2) KD ENERGY, LLC 115989 M. CUSACK A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268029 M. CUSACK B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268027 M. F. LAMBERT 50 TOM OCONNOR HILCORP ENERGY COMPANY 241971 M. F. LAMBERT 214 TOM O'CONNOR (8000, WEST) HILCORP ENERGY COMPANY 255911 M. F. LAMBERT 151 151 TOM OCONNOR (6280) HILCORP ENERGY COMPANY 258066 M. KOOPMANN UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266281


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ M.A. WESLEY 1 KOENIG, NORTH (WILCOX MIGURA) HILCORP ENERGY COMPANY 249474 M.D.J. 1 NURSERY (3500) DOUBLE PLAY OIL & GAS, INC 245941 M.V. O'CONNOR ESTATE "E" 5 GRETA (F-2-A) CHARRO OPERATING, L.L.C. 255960 M.V. O'CONNOR ESTATE "E" 20 GRETA (5270) CHARRO OPERATING, L.L.C. 254192 M&P RANCH LLC 1 SWINNEY SWITCH (HOCKLEY, SECOND) WELDER EXPLORATION & PROD., INC. 255296 MA 206 C 1-C HELEN GOHLKE (VICKSBURG 3800) DFG OIL & GAS, LLC 170674 MA 206 C 1-T HELEN GOHLKE (VICKSBURG 3900) DFG OIL & GAS, LLC 170678 MABRAY 1 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 257113 MACHICEK UNIT 1H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 272419 MAG. BEACH-KELLERS BAY ST. G. U. K 13 MAG. BEACH-KELLERS BAY (MELB.) CHESAPEAKE OPERATING, L.L.C. 002948 MAG.BEACH-KELLERS BAY MELB. G.U. K 19 D MAG. BEACH-KELLERS BAY (MELB.) HILCORP ENERGY COMPANY 047887 MAGARIGAL GAS UNIT 1 A 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 273092 MAGARIGAL GAS UNIT 1 A 3H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 267716 MAGARIGAL GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 272519 MAGARIGAL GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 272090 MAGGIE BRANCH 4 GANADO (3800) KD ENERGY, LLC 143857 MAGGIE MCNEILL B 1 C. A. WINN (YEGUA 5320) DOUBLE PLAY OIL & GAS, INC 269256 MAGUGLIN UNIT 3 COQUAT (10500) MILAGRO EXPLORATION, LLC 219215 MAGUGLIN UNIT 4 COQUAT (12700) MILAGRO EXPLORATION, LLC 206488 MAGUGLIN UNIT 5 COQUAT (12700) MILAGRO EXPLORATION, LLC 207943 MAGUGLIN, GEORGE 1 COQUAT (12700) MILAGRO EXPLORATION, LLC 099506 MALONE 15 SINGLETON (HOCKLEY 3800) ENCO EXPLORATION COMPANY 262238 MALONE -A- 1 MEDIO CREEK (3000) T-C OIL COMPANY, LLC 245435 MALONE -A- 1 MEDIO CREEK (4100) T-C OIL COMPANY, LLC 262028 MALONE -B- 1 BLANCONIA (1950) T-C OIL COMPANY, LLC 272983 MALONE -B- 1 MEDIO CREEK (3000) T-C OIL COMPANY, LLC 245928 MALONE -C- 1 MEDIO CREEK (4100) T-C OIL COMPANY, LLC 245438 MALONE -D- 1 MEDIO CREEK (4100) T-C OIL COMPANY, LLC 253345 MALONE, GRACE FOX ET AL 3 MALONE (4500) LYTLE CREEK OPERATING, INC. 128697 MALONE, SID 2 NORMANNA, S. (2050) DISCOVERY PETROLEUM, L.L.C. 089641 MANGIONE 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268531 MANGIONE 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269542 MANGIONE 01 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 274569 MANGIONE 01 04H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 273140 MANGIONE 01 05H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 273094 MANGIONE 01 06H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 272380 MANGIONE 01 10H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 273141 MANGIONE 01 11H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 273163 MANGIONE 01 12H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 272381 MANSKER "A" 2 CAUSEY (11,100) HUGHES, DAN A. COMPANY, L.P. 184812 MANSKER RANCH G. U. 1 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 208571 MANSKER RANCH G. U. 2 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 209436 MANSKER RANCH G.U. 5 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 234769 MANSKER RANCH GAS UNIT 4 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 253314 MANSKER RANCH GAS UNIT 6 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 235892 MANSKER RANCH GU 3 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 220285 MARALDO A403 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 250474 MARBERRY 7 U MCFADDIN (1875) GREAT BAY OPERATIONS, LLC 052505 MARBERRY 20 MCFADDIN (2450) GREAT BAY OPERATIONS, LLC 272723 MARBERRY "B" 4 MCFADDIN (2900) GREAT BAY OPERATIONS, LLC 141534 MARBERRY "B" 5 MCFADDIN (2450) GREAT BAY OPERATIONS, LLC 254382


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MARBERRY "B" 5 MCFADDIN (2600) GREAT BAY OPERATIONS, LLC 245475 MAREK, ADOLPH GAS UNIT 1 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 091200 MAREK, ADOLPH GAS UNIT 2 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 110426 MARIE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 263750 MARILOU MCCAMPBELL 4 UNA WEST (S-SAND) OSYKA PERMIAN, LLC 253915 MARION & LA VERNIA JUNE FIMBEL 4 EDWIN FIMBEL (3500 FRIO) CORDELE DEVELOPMENT CORPORATION 219597 MARION & LA VERNIA JUNE FIMBEL 6 EDWIN FIMBEL (3500 FRIO) CORDELE DEVELOPMENT CORPORATION 219409 MARK KATZFEY 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 259685 MARKS 1 R FANNIN, SOUTH (4800) MOHICAN OPERATING, L.L.C. 244742 MARKS 1 R TERRELL POINT (3915) MOHICAN OPERATING, L.L.C. 256617 MARLENE OLSON 1 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 258557 MARLENE OLSON 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 251511 MARLENE OLSON 2 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 255738 MARLENE OLSON 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272136 MARSHALL "B" 1 SLICK, S. (WILCOX "J") NELSON, JAMES L. 200715 MARSHALL, H. T. 3 HEYSER (4400) MCGOWAN WORKING PARTNERS, INC. 136637 MARSHALL, H. T. (PF) 1 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 090791 MARSHALL, H.T. 8 HEYSER (F-37) MCGOWAN WORKING PARTNERS, INC. 134971 MARSHALL, WILLIAM 1 BOYCE (HOCKLEY) NELSON, JAMES L. 142659 MARTIN 1 CLAY WEST (WILCOX 10400) JAMEX, INC. 259051 MARTIN 1 CLAY WEST (WILCOX 10,750) HOLLIMON OIL CORPORATION 192478 MARTIN 1 SHARONLEE (SLIGO) NEWFIELD EXPLORATION COMPANY 235990 MARTIN UNIT 1 ORANGEDALE (LULING) WAGNER OIL COMPANY 050121 MARTIN UNIT 2 THEIS, SOUTH(SLICK FIRST) MAGNUM PRODUCING, LP 220079 MARTIN, M. E. 1 AUSTIN (WILCOX 12,300) SIANA OIL & GAS 229876 MARTIN, MARY 1 GOLIAD, N. (3250) AMPAK OIL COMPANY 193749 MARTINSON 1 TULETA (YEGUA 4060) REPUBLIC RESOURCES, LLC. 185602 MARTINSON 2 TULETA (YEGUA 4060) REPUBLIC RESOURCES, LLC. 184648 MARY ALICE ANDERSON ET AL-A- A 10 FAGAN (2150) MARAN OIL COMPANY 274356 MARY ALICE JONES 1 MURRY'S MAGIC (YEGUA) WELDER EXPLORATION & PROD., INC. 256072 MARY B. GOLSCH GAS UNIT 1 HALLETTSVILLE, EAST (9800) PIONEER NATURAL RES. USA, INC. 113228 MARY B. GOLSCH GAS UNIT 1 4 HALLETTSVILLE, EAST (9800) PIONEER NATURAL RES. USA, INC. 109231 MARY CLAIRE BAUER ET VIR 8 TOM OCONNOR (5050, EAST) HILCORP ENERGY COMPANY 252459 MARY CLAIRE BAUER ET VIR 10 TOM OCONNOR (5200, EAST) HILCORP ENERGY COMPANY 255287 MARY F. LAMBERT "EA" A 8 TOM O'CONNOR (5350 SAND) HILCORP ENERGY COMPANY 254174 MATEJEK GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 268013 MATEJEK 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 263988 MATEJEK 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 271616 MATEJEK 01 03H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 271617 MATEJEK 01 04H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 271618 MATEJEK 01 05H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 271615 MATKIN SUGARKANE UNIT 1 1H SUGARKANE (EAGLE FORD) BHP BILLITON PET(TXLA OP) CO 266698 MATKIN, W. C. ESTATE - WN 2 CLAYTON (SLICK 6450) GREATER SOONER HOLDINGS, INC. 153670 MATTHEW 2 SWEET HOME (EDWARDS) PIONEER NATURAL RES. USA, INC. 251325 MATTHEW-KUESTER 18 L HELEN GOHLKE ( WILCOX B-2) REMORA MANAGEMENT, LLC 002034 MATTHEW-KUESTER 18 U HELEN GOHLKE ( WILCOX A-1) REMORA MANAGEMENT, LLC 059775 MATTHEWS 1 BRUSHY CREEK, S. (WILCOX 13900) CRIMSON EXPLORATION OPER., INC. 171515 MATTHEWS 2 BRUSHY CREEK, S. (WILCOX 13900) CRIMSON EXPLORATION OPER., INC. 176365 MATTHEWS-KUESTER 7 HELEN GOHLKE ( YEGUA K) REMORA MANAGEMENT, LLC 171759 MATULA GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 263548 MATULA, ROBERT 2 MAXINE, EAST (8700) GEISER OPERATING, INC. 137952


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MAUDE B. TRAYLOR 2 MAUDE B. TRAYLOR (F-41-61, DEEP) TAOS RESOURCES OPERATING CO LLC 259742 MAUDE B. TRAYLOR 44 MAUDE B. TRAYLOR (F-41-61, DEEP) CIMAREX ENERGY CO. OF COLORADO 251312 MAUDE B. TRAYLOR "B" 9 MAUDE B. TRAYLOR (F-41-61, DEEP) TAOS RESOURCES OPERATING CO LLC 237664 MAUDE TRAYLOR A 5 MAUDE B. TRAYLOR (F-41-61, DEEP) HILCORP ENERGY COMPANY 233423 MAUDE TRAYLOR A 6 MAUDE B. TRAYLOR (F-41-61, DEEP) HILCORP ENERGY COMPANY 245519 MAUDE WILLIAMS ET AL "A" 25 GRETA (L- 4) HILCORP ENERGY COMPANY 250330 MAUDE WILLIAMS ET AL "A" D 2G LAKE PASTURE (M-318) HILCORP ENERGY COMPANY 256104 MAUDE WILLIAMS ET AL "A" D 3G LAKE PASTURE (H-495) HILCORP ENERGY COMPANY 258522 MAUDE WILLIAMS ET AL "A" D 5 LAKE PASTURE (FS-536) HILCORP ENERGY COMPANY 254094 MAUDE WILLIAMS ET AL "A" D 6 LAKE PASTURE (M-330) HILCORP ENERGY COMPANY 263355 MAUDE WILLIAMS ET AL "A" D 21 LAKE PASTURE (FS-534) HILCORP ENERGY COMPANY 237009 MAUDE WILLIAMS ET AL "A" D 41 LAKE PASTURE (E-282) HILCORP ENERGY COMPANY 231400 MAUDE WILLIAMS ET AL "A" D 45 LAKE PASTURE (E-279) HILCORP ENERGY COMPANY 245523 MAUDE WILLIAMS ET AL "A" D 46 LAKE PASTURE (M-307) HILCORP ENERGY COMPANY 256712 MAUDE WILLIAMS ET AL "A" D 57 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 237232 MAUDE WILLIAMS ET AL "A" D 83 LAKE PASTURE (FS-534) HILCORP ENERGY COMPANY 254530 MAUDE WILLIAMS ET AL "A" D 87 LAKE PASTURE (FS-538) HILCORP ENERGY COMPANY 261124 MAUDE WILLIAMS ET AL "A" D111 LAKE PASTURE (M-348) HILCORP ENERGY COMPANY 239814 MAUDE WILLIAMS ET AL "A" D135 LAKE PASTURE (C-406) HILCORP ENERGY COMPANY 260558 MAUDE WILLIAMS ET AL "A" D146 LAKE PASTURE (M-348) HILCORP ENERGY COMPANY 237875 MAUDE WILLIAMS ET AL "A" D154 LAKE PASTURE (C-406) HILCORP ENERGY COMPANY 237758 MAUDE WILLIAMS ET AL "A" D162 LAKE PASTURE (E-219) HILCORP ENERGY COMPANY 260576 MAUDE WILLIAMS ET AL "A" D195 LAKE PASTURE (E-259) HILCORP ENERGY COMPANY 261172 MAUDE WILLIAMS ET AL "B" 2 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 259993 MAUDE WILLIAMS ET AL "B" 38 GRETA (L-15) HILCORP ENERGY COMPANY 252509 MAUDE WILLIAMS, ET AL "B" 36 TOM O'CONNOR (2830) HILCORP ENERGY COMPANY 143855 MAURBRO FIELD/MARG/UNIT #1 1007 MAURBRO KD ENERGY, LLC 158909 MAURBRO FIELD/MARG/UNIT NO.1 1406 MAURBRO KD ENERGY, LLC 159444 MAURITZ "A" 1 MAURITZ, EAST (5600) MARQUEE CORPORATION 269824 MAURITZ, H. & TRUST 1 MAURITZ (5700) FREDCO 074620 MAURITZ, T. N. 6 GANADO, WEST PREMIER NATURAL RESOURCES, LLC 085592 MAURITZ, T.N. 8 GANADO, WEST (5900) PREMIER NATURAL RESOURCES, LLC 148417 MAURTIZ, T.N. 7 GANADO, WEST (5200) PREMIER NATURAL RESOURCES, LLC 164450 MAY B UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270327 MAY B UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 272778 MAY B UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 272525 MAY B UNIT 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 273487 MAY B UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 272779 MAY UNIT 1 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 265086 MAY UNIT 1 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 259818 MAY UNIT 1 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 267657 MAYFIELD 1 LIONS (CORONA CONSOLIDATED) TECPETROL OPERATING LLC 219309 MAYFIELD, P. O. 1 BOYCE (PETTUS) ADVANTAGE OIL & GAS, INC. 173250 MAYFIELD, P.O. 1 CABEZA CREEK (PETTUS) NELSON, JAMES L. 132700 MAYWALD 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269411 MC CAN D 2 SALEM (1300) PINTAIL OIL & GAS, LLC 270304 MC CARN A 5H SUGARKANE (EAGLE FORD) BHP BILLITON PET(TXLA OP) CO 266844 MC CARN B 1H SUGARKANE (EAGLE FORD) BHP BILLITON PET(TXLA OP) CO 266847 MC FADDIN 514 MCFADDIN (2200) TAOS RESOURCES OPERATING CO LLC 212480 MC FADDIN 1057 MCFADDIN (5600 NORTH) TAOS RESOURCES OPERATING CO LLC 206485 MC FADDIN 1069 MCFADDIN (5500) TAOS RESOURCES OPERATING CO LLC 207458


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MCALISTER UNIT 1H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 265430 MCALISTER UNIT 2H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 267295 MCALISTER UNIT 4H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 265431 MCALISTER UNIT 5H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 268799 MCALISTER UNIT 6H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 269026 MCALISTER UNIT 7H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 270435 MCALISTER UNIT 8H SUGARKANE (EAGLE FORD) ENCANA OIL & GAS(USA) INC. 270230 MCCABE 1 HOPE (WILCOX MASSIVE) BROWN, GEO. R PARTNERSHIP,LP,THE 222195 MCCAMPBELL 1 LA BAHIA, E. (3900) AMERICO ENERGY RESOURCES, LLC 164389 MCCAMPBELL, MARILOU 14 UNA WEST (6700) OSYKA PERMIAN, LLC 151000 MCCAMPBELL, MARILOU 15 UNA WEST (6200) OSYKA PERMIAN, LLC 163328 MCCAN 5B WELDER RANCH (5670) B.P. PRODUCTIONS INC. 168792 MCCAN R 1 C MCFADDIN, NORTH (4900) TOP OP, L.L.C. 259549 MCCAN R 1 T MCFADDIN, NORTH (5350) TOP OP, L.L.C. 259551 MCCAN R 2 MCFADDIN, NORTH (5200) TOP OP, L.L.C. 261911 MCCAN R 3 MCFADDIN, NORTH (5100 -B-) TOP OP, L.L.C. 265468 MCCAN T 2 MCFADDIN, NORTH (5600) TOP OP, L.L.C. 253259 MCCAN T 3 MCFADDIN, NORTH (6350) TOP OP, L.L.C. 231310 MCCAN T 4 MCFADDIN, NORTH (5600) TOP OP, L.L.C. 230247 MCCAN T 5 MCFADDIN, NORTH (5350) TOP OP, L.L.C. 232306 MCCAN T 6 MCFADDIN, NORTH (5680) TOP OP, L.L.C. 253269 MCCAN T 8 MCFADDIN, NORTH (5400) TOP OP, L.L.C. 246666 MCCAN, C. K. JR. "B" 6 SALEM (3525) B.P. PRODUCTIONS INC. 173784 MCCAN, C. K. JR. "C" 6 SALEM (1100) B.P. PRODUCTIONS INC. 135419 MCCAN, C. K. JR. ET AL 29 SALEM (1800) PINTAIL OIL & GAS, LLC 207901 MCCAN, C. K. JR. ET AL 30 SALEM (860) PINTAIL OIL & GAS, LLC 213953 MCCAN, C. K. JR. ET AL "A" 2 SALEM (3700) PINTAIL OIL & GAS, LLC 108138 MCCAN, C. K. JR. ET AL "A" NCT 1 SALEM (1420) PINTAIL OIL & GAS, LLC 109437 MCCAN, C.K. JR. ET AL "A" NCT 37 SALEM (3950) PINTAIL OIL & GAS, LLC 155138 MCCAN, C.K. JR. ET AL "C" 1 SALEM (1600) B.P. PRODUCTIONS INC. 141990 MCCAN, C.K. JR. ET AL "C" 9 SALEM (1300) B.P. PRODUCTIONS INC. 149759 MCCAN, C.K. JR., ET AL "B" 1 SALEM (1500) B.P. PRODUCTIONS INC. 167812 MCCAN, JR. ET AL 26 SALEM (1300) PINTAIL OIL & GAS, LLC 133732 MCCANN, CARRIZO 3 MCFADDIN, NORTH (4500) FOXBOROUGH ENERGY COMPANY, LLC 275833 MCCASKILL 1 MCCASKILL (LOWER WILCOX) RESACA RESOURCES, L.L.C. 269580 MCCASLIN, C. L. 24-F RAMIRENA, SW. (YEGUA 7, SEG B-1) HART PETROLEUM SERVICES, INC 147032 MCCASLIN, CHARLES L. 18-D RAMIRENA, SW (JACKSON STRAY) HART PETROLEUM SERVICES, INC 158260 MCCLANAHAN 1H SUGARKANE (EAGLE FORD) SABINE OIL & GAS CORPORATION 273046 MCCLANAHAN 2H SUGARKANE (EAGLE FORD) SABINE OIL & GAS CORPORATION 272378 MCCLANAHAN 3H SUGARKANE (EAGLE FORD) SABINE OIL & GAS CORPORATION 272154 MCCLANAHAN 4H SUGARKANE (EAGLE FORD) SABINE OIL & GAS CORPORATION 272375 MCCLANAHAN 5H SUGARKANE (EAGLE FORD) SABINE OIL & GAS CORPORATION 272991 MCCLANAHAN GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 260241 MCCLELLAND 15 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 089642 MCCLELLAND 16 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 159385 MCCLELLAND 17 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 098082 MCCLELLAND 18 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 102307 MCCLELLAND 19 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 103095 MCCLELLAND 20 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 106489 MCCLELLAND 22 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 161247 MCCLELLAND 24 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 142820


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MCCLELLAND 26 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 159375 MCCLELLAND 27 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 178937 MCCLELLAND 28 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 178941 MCCLELLAND 29 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 182799 MCCLELLAND 30 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 182939 MCCLELLAND "C" 1 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 099695 MCCLELLAND "C" 2 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 101274 MCCLELLAND "C" 4 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 145721 MCCLELLAND "E" 1 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 106843 MCCLELLAND G. U. "B" 1 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 095340 MCCLELLAND G. U. "B" 2 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 099694 MCCLELLAND G.U. #1 1 OAKVILLE (WILCOX 9700) PYOTE WELL SERVICE, LLC 102798 MCCLELLAND, J.W. ET AL GAS UNIT 1 LIMES (WILCOX 9900) OXY USA INC. 101451 MCCLENDON 3 TRES TOROS (HOCKLEY) GENESIS WELL SERVICE 198747 MCCLENDON 4 TRES TOROS (HOCKLEY) GENESIS WELL SERVICE 197367 MCCORD 2 INEZ (FRIO 4700) GEONATURAL RESOURCES, INC. 188166 MCCORMICK-LOVE UNIT #1 1 NURSERY, S. (3625) HACK'S OIL & GAS COMPANY 123334 MCCOY 1 FRIAR RANCH, S. (CONSOLIDATED) RINCON PETROLEUM CORPORATION 245957 MCCOY GAS UNIT 2 FRIAR RANCH, S. (CONSOLIDATED) RINCON PETROLEUM CORPORATION 254354 MCCOY-KEY GAS UNIT 1 BALFOUR (YEGUA 5350) B D PRODUCTION CO., INC. 221045 MCCOY, HERTHA HELEN 1 GOHLKE,N. (YEGUA 5370) B D PRODUCTION CO., INC. 073189 MCCRABB RANCH 1 T MISSION VALLEY, N (FRIO 3000) DOUBLE PLAY OIL & GAS, INC 233877 MCCRORY 1 T GANADO (FRIO 6620) FORMATION RESOURCES LLC 123162 MCCRORY, W.W. 6 GANADO (5400) FORMATION RESOURCES LLC 125306 MCCURDY A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267010 MCDONALD, A.B. 1 SHERIFF, EAST (8530) XOG OPERATING LLC 107773 MCDOWELL 1 WESTHOFF (COMBINED ASSOCIATED) PINTAIL OIL & GAS, LLC 214981 MCDOWELL 2 WESTHOFF (COMBINED ASSOCIATED) PINTAIL OIL & GAS, LLC 216081 MCDOWELL 4 WESTHOFF (COMBINED ASSOCIATED) PINTAIL OIL & GAS, LLC 250403 MCDOWELL "A" 1 WESTHOFF (COMBINED ASSOCIATED) PINTAIL OIL & GAS, LLC 235002 MCDOWELL "A" 2 WESTHOFF (COMBINED ASSOCIATED) PINTAIL OIL & GAS, LLC 247338 MCDOWELL SWD 1D KENEDY, SW. (SLIGO) BES, ENVIRONMENTAL SERVICES,INC. 212748 MCELROY 1 VIENNA (FRIO 3300) ACT OPERATING, INC. 171747 MCELVEEN, H.O. 1 L EL TORO, SW. (6300) OSYKA PERMIAN, LLC 135787 MCEWANS 1 HALLETTSVILLE (10,150) LGDC CORPORATION 256310 MCEWANS 1 WORD, N. (EDWARDS) LGDC CORPORATION 251466 MCFADDIN 3 MCFADDIN (4800) TAOS RESOURCES OPERATING CO LLC 185223 MCFADDIN 4 MCFADDIN (3400) TAOS RESOURCES OPERATING CO LLC 190671 MCFADDIN 5 MCFADDIN (3200) TAOS RESOURCES OPERATING CO LLC 205465 MCFADDIN 6 MCFADDIN (3000) TAOS RESOURCES OPERATING CO LLC 244740 MCFADDIN 6 MCFADDIN (3430) TAOS RESOURCES OPERATING CO LLC 201224 MCFADDIN 19 MCFADDIN (GRETA STRINGER) TAOS RESOURCES OPERATING CO LLC 080714 MCFADDIN 55 MCFADDIN (4050) TAOS RESOURCES OPERATING CO LLC 153659 MCFADDIN 59 MCFADDIN (2500) TAOS RESOURCES OPERATING CO LLC 145850 MCFADDIN 110 MCFADDIN (3300) TAOS RESOURCES OPERATING CO LLC 154662 MCFADDIN 113 MCFADDIN (GRETA STRINGER) TAOS RESOURCES OPERATING CO LLC 063388 MCFADDIN 115 E MCFADDIN (3400) TAOS RESOURCES OPERATING CO LLC 002755 MCFADDIN 115 G MCFADDIN (3200) TAOS RESOURCES OPERATING CO LLC 002750 MCFADDIN 117 MCFADDIN (3600) TAOS RESOURCES OPERATING CO LLC 144051 MCFADDIN 121 MCFADDIN (3600) TAOS RESOURCES OPERATING CO LLC 154506 MCFADDIN 122 MCFADDIN (2200) TAOS RESOURCES OPERATING CO LLC 155290


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MCFADDIN 123 MCFADDIN (1900) TAOS RESOURCES OPERATING CO LLC 043528 MCFADDIN 126 MCFADDIN (3500) TAOS RESOURCES OPERATING CO LLC 153689 MCFADDIN 129 MCFADDIN (2900) TAOS RESOURCES OPERATING CO LLC 153690 MCFADDIN 131 MCFADDIN (2200) TAOS RESOURCES OPERATING CO LLC 031592 MCFADDIN 138 MCFADDIN (2500) TAOS RESOURCES OPERATING CO LLC 149529 MCFADDIN 140 MCFADDIN (5000) TAOS RESOURCES OPERATING CO LLC 002773 MCFADDIN 141 MCFADDIN (3000) TAOS RESOURCES OPERATING CO LLC 043457 MCFADDIN 145 MCFADDIN (3300) TAOS RESOURCES OPERATING CO LLC 192353 MCFADDIN 145 MCFADDIN (4050) TAOS RESOURCES OPERATING CO LLC 125001 MCFADDIN 146 MCFADDIN (2900) TAOS RESOURCES OPERATING CO LLC 168089 MCFADDIN 153 MCFADDIN (2900) TAOS RESOURCES OPERATING CO LLC 174700 MCFADDIN 158 MCFADDIN (3400) TAOS RESOURCES OPERATING CO LLC 116177 MCFADDIN 159 MCFADDIN (5700) TAOS RESOURCES OPERATING CO LLC 146767 MCFADDIN 164 MCFADDIN (5600 NORTH) TAOS RESOURCES OPERATING CO LLC 145885 MCFADDIN 167 MCFADDIN (5600 NORTH) TAOS RESOURCES OPERATING CO LLC 126517 MCFADDIN 17 MCFADDIN (3100) TAOS RESOURCES OPERATING CO LLC 145851 MCFADDIN 175 MCFADDIN (5000) TAOS RESOURCES OPERATING CO LLC 161085 MCFADDIN 179 MCFADDIN (3600) TAOS RESOURCES OPERATING CO LLC 220556 MCFADDIN 180 MCFADDIN (5000) TAOS RESOURCES OPERATING CO LLC 251427 MCFADDIN 182 MCFADDIN (3600) TAOS RESOURCES OPERATING CO LLC 247617 MCFADDIN 187 MCFADDIN (5720) TAOS RESOURCES OPERATING CO LLC 269595 MCFADDIN 506 MCFADDIN (3100) TAOS RESOURCES OPERATING CO LLC 161748 MCFADDIN 511 MCFADDIN (2800) TAOS RESOURCES OPERATING CO LLC 142500 MCFADDIN 512 MCFADDIN (1900) TAOS RESOURCES OPERATING CO LLC 046870 MCFADDIN 515 MCFADDIN (3300) TAOS RESOURCES OPERATING CO LLC 151041 MCFADDIN 972 MCFADDIN (4050) TAOS RESOURCES OPERATING CO LLC 185214 MCFADDIN 974 MCFADDIN (2500) TAOS RESOURCES OPERATING CO LLC 269673 MCFADDIN C 2 MCFADDIN (2500) TAOS RESOURCES OPERATING CO LLC 244451 MCFADDIN 1062 MCFADDIN (5500) TAOS RESOURCES OPERATING CO LLC 207118 MCFADDIN -A- 7 MCFADDIN, NORTH (4800 GAS) AMERICO ENERGY RESOURCES, LLC 142292 MCFADDIN -A- 12 C MCFADDIN, NW. (2090) AMERICO ENERGY RESOURCES, LLC 057966 MCFADDIN -A- 12 T MCFADDIN, NW. (6050) AMERICO ENERGY RESOURCES, LLC 057967 MCFADDIN -A- 24 E MCFADDIN, NORTH (4800 GAS) AMERICO ENERGY RESOURCES, LLC 085113 MCFADDIN -A- 31 MCFADDIN, NW. (2090) AMERICO ENERGY RESOURCES, LLC 058234 MCFADDIN -A- 43 MCFADDIN, NW. (4600) AMERICO ENERGY RESOURCES, LLC 056733 MCFADDIN -A- 44 MCFADDIN, NW. (2000) AMERICO ENERGY RESOURCES, LLC 099021 MCFADDIN -A- 61 MCFADDIN, N. W. (4800) AMERICO ENERGY RESOURCES, LLC 145091 MCFADDIN -A- 62 U MCFADDIN, NORTH (3750) AMERICO ENERGY RESOURCES, LLC 153223 MCFADDIN -A- 62-L MCFADDIN, NORTH (4200) AMERICO ENERGY RESOURCES, LLC 152623 MCFADDIN -A- 64 MCFADDIN, NORTH (5400) AMERICO ENERGY RESOURCES, LLC 151960 MCFADDIN -A- 65 MCFADDIN, NORTH (5350) AMERICO ENERGY RESOURCES, LLC 160255 MCFADDIN -A- 66 MCFADDIN, NORTH (5040) AMERICO ENERGY RESOURCES, LLC 162223 MCFADDIN -A- 67 MCFADDIN, NORTH (3750) AMERICO ENERGY RESOURCES, LLC 173466 MCFADDIN -A- 69 MCFADDIN, NW. (4950) AMERICO ENERGY RESOURCES, LLC 190412 MCFADDIN -A- 74 MCFADDIN, NORTH (5100) AMERICO ENERGY RESOURCES, LLC 261290 MCFADDIN -A- 78 MCFADDIN, NORTH (5300 -A-) AMERICO ENERGY RESOURCES, LLC 267054 MCFADDIN -A- A 58 MCFADDIN, NORTH (4200) AMERICO ENERGY RESOURCES, LLC 141507 MCFADDIN -A- A 72 MCFADDIN, NORTH (6100) AMERICO ENERGY RESOURCES, LLC 250049 MCFADDIN -A- A 73 MCFADDIN, NORTH (5040) AMERICO ENERGY RESOURCES, LLC 250603 MCFADDIN -B- 1-L MCFADDIN, NORTH (5060) AMERICO ENERGY RESOURCES, LLC 147648 MCFADDIN -B- 1U MCFADDIN, NORTH (4200) AMERICO ENERGY RESOURCES, LLC 150730


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MCFADDIN /B/ 4 KAY CREEK (1750) URBAN OIL & GAS GROUP, LLC 207757 MCFADDIN 'A' 1 KAY CREEK (1950) URBAN OIL & GAS GROUP, LLC 193221 MCFADDIN 'A' 17 KAY CREEK (1750) URBAN OIL & GAS GROUP, LLC 214445 MCFADDIN "A" 18 MCFADDIN (1800) URBAN OIL & GAS GROUP, LLC 163822 MCFADDIN "A" 29 MCFADDIN (1800) URBAN OIL & GAS GROUP, LLC 163820 MCFADDIN "A" 34 F KAY CREEK (1950) URBAN OIL & GAS GROUP, LLC 132982 MCFADDIN "A" 36 KAY CREEK (1750) URBAN OIL & GAS GROUP, LLC 218446 MCFADDIN "A" 36 F KAY CREEK (2950) URBAN OIL & GAS GROUP, LLC 132172 MCFADDIN "A" 43 MCFADDIN (2500) URBAN OIL & GAS GROUP, LLC 254988 MCFADDIN "A" 45 U KAY CREEK (2800) URBAN OIL & GAS GROUP, LLC 199976 MCFADDIN A A 71 MCFADDIN, NORTH (5600) AMERICO ENERGY RESOURCES, LLC 251460 MCFADDIN A- 46 KAY CREEK (1950) URBAN OIL & GAS GROUP, LLC 212443 MCFADDIN, A. M. A 13 MCFADDIN, EAST (5250) AMERICO ENERGY RESOURCES, LLC 171524 MCFADDIN, A. M. A 16 MCFADDIN, EAST (5250) AMERICO ENERGY RESOURCES, LLC 150399 MCFADDIN, A. M. A 18U MCFADDIN, EAST (5725) AMERICO ENERGY RESOURCES, LLC 171525 MCFADDIN, A. M. A 19 MCFADDIN, EAST (3700) AMERICO ENERGY RESOURCES, LLC 203415 MCFADDIN, A. M. A 27 MCFADDIN, EAST (5300) AMERICO ENERGY RESOURCES, LLC 094475 MCFADDIN, A. M. A 47 MCFADDIN, NORTH (5665) AMERICO ENERGY RESOURCES, LLC 111418 MCFADDIN, A. M. A 49 MCFADDIN, EAST (5250) AMERICO ENERGY RESOURCES, LLC 074621 MCFADDIN, A.M. A 9 MCFADDIN, EAST (5725) AMERICO ENERGY RESOURCES, LLC 113189 MCFADDIN, J. A. 45 KAY CREEK (2950) URBAN OIL & GAS GROUP, LLC 266057 MCFADDIN, J. A. 134 MCFADDIN (2200) TAOS RESOURCES OPERATING CO LLC 002719 MCFADDIN, J. A. -A- 59 MCFADDIN, NORTH (5100) AMERICO ENERGY RESOURCES, LLC 174677 MCFADDIN, J.A. A 44 KAY CREEK (2400) URBAN OIL & GAS GROUP, LLC 269479 MCFADDIN, J.A. A 44 T KAY CREEK (3500) URBAN OIL & GAS GROUP, LLC 198521 MCFADDIN, J.A. "A" 41 MCFADDIN (5600) URBAN OIL & GAS GROUP, LLC 225876 MCFALL-KERBY 5 RUDMAN, W. (LULING 6790) FIVE-JAB, INC. 213252 MCGLOTHING "B", ANNA DEA 1 B RIVERDALE (2000) EAF OIL & GAS CORPORATION 103563 MCGLOTHING "B", ANNA DEA 3 B RIVERDALE (1900) EAF OIL & GAS CORPORATION 103562 MCGLOTHING, ANNA DEA "A" 4 RIVERDALE (1900) EAF OIL & GAS CORPORATION 103644 MCGLOTHING, ANNA DEA ET AL 2AC RIVERDALE (2000) EAF OIL & GAS CORPORATION 077091 MCGLOTHING, ANNA DEA ET AL 2AT RIVERDALE (2350 FRIO) EAF OIL & GAS CORPORATION 077090 MCGRIFF 11R OAKVILLE CHASS PRODUCTION CO. 081088 MCKINNEY, J. E. 3 PETTUS, SE. (WILCOX 7650) MAGNUM PRODUCING, LP 164068 MCKINNEY, J. E. 5 PETTUS, S.E. (1360) MAGNUM PRODUCING, LP 182045 MCKINNEY, RICKI 1 THOMASTON (YEGUA 4800) CAMOIL, INC. 073103 MCLENDON, J. B. 1 BLOOMINGTON (GRETA STRINGER) TRANT, SAM 000927 MCMANUS SHALLOW UNIT 1 BALFOUR (YEGUA 2950) B D PRODUCTION CO., INC. 233577 MCMANUS UNIT 1 HOPE (WILCOX MASSIVE) B D PRODUCTION CO., INC. 229728 MCMANUS, C. B. ET AL 3A HOPE (VICKSBURG 3200) B D PRODUCTION CO., INC. 171262 MCMANUS, CARROLL 1 BRUSHY CREEK (WILCOX -S-1-11200) CRIMSON EXPLORATION OPER., INC. 166826 MCMULLEN 1 KARON (MACKHANK) MOSBACHER ENERGY COMPANY 272247 MCMULLEN OIL & ROYALTY 1 LABUS (EDWARDS, UPPER) OKY INVESTMENTS, INC. 126562 MCNEIL 1 DINERO, W. (WILCOX 13600) CBN OPERATING CORP. 172263 MCNEIL 4 DINERO, W. (WILCOX 13600) CBN OPERATING CORP. 180781 MCNEIL GAS UNIT 1 THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 233952 MCNEILL 1A JACKSON RANCH (YEGUA 5250) DOUBLE PLAY OIL & GAS, INC 206511 MCNEILL 2 DINERO, WEST (PETTUS) RODESSA OPERATING COMPANY 181975 MCNEILL 3 D PARKTEX (HOCKLEY, UPPER) DOUBLE PLAY OIL & GAS, INC 244747 MCNEILL G 2 DINERO, W. (YEGUA 5300) DOUBLE PLAY OIL & GAS, INC 258804 MCNEILL (BROOKS) 1 PARKTEX (HOCKLEY, UPPER) DOUBLE PLAY OIL & GAS, INC 272719


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MCNEILL C 1 DINERO, WEST (HOCKLEY) DOUBLE PLAY OIL & GAS, INC 212347 MCNEILL CATTLE CO. 1 NURSERY, SW. (3230) BLUE WING ENERGY, INC. 255057 MCNEILL D 1 DINERO, W. (YEGUA 5300) DOUBLE PLAY OIL & GAS, INC 211789 MCNEILL E 1 DINERO, W. (COOK MOUNTAIN) DOUBLE PLAY OIL & GAS, INC 248518 MCNEILL EAST 1 JACKSON RANCH (YEGUA 5250) DOUBLE PLAY OIL & GAS, INC 221415 MCNEILL F 2 JACKSON RANCH (YEGUA 5300) DOUBLE PLAY OIL & GAS, INC 225500 MCNEILL GAS UNIT NO 1 2 THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 239424 MCNEILL H 1 PAISANO CREEK (YEGUA) DOUBLE PLAY OIL & GAS, INC 272361 MCNEILL UNIT 1 MCGOWN (PETTUS UPPER) DOUBLE PLAY OIL & GAS, INC 238793 MCNEILL WEST 1 PARKTEX (HOCKLEY, UPPER) DOUBLE PLAY OIL & GAS, INC 255104 MCNEILL, ANNA MAY 1 MCNEILL (YEGUA 5800) WALLIS ENERGY, INC. 116318 MCNEILL, WADE 1B PAISANO CREEK, E. (3200) DOUBLE PLAY OIL & GAS, INC 242423 MCNEILL, WADE "A" 1 JACKSON RANCH (YEGUA 5250) DOUBLE PLAY OIL & GAS, INC 226426 MCSWEEN 101 1 HYSAW (EDWARDS) HAWTHORN ENERGY PARTNERS, LLC 257156 MEANS 1 BALFOUR (YEGUA 5350) KWS OIL & GAS, LLC 220997 MEEK 2 ELMER KOLLE (BOB 3400) ALTA MESA SERVICES, LP 217530 MEEK 2 ELMER KOLLE (SANDY 3500) ALTA MESA SERVICES, LP 214886 MEEK 3 SALEM, EAST (2400) ALTA MESA SERVICES, LP 214419 MEEK A 1 SALEM, S.E. (2400) ALTA MESA SERVICES, LP 239477 MEEK A 2 SALEM, S.E. (2400) ALTA MESA SERVICES, LP 215282 MEEK, DONALD 2 LUCK LLOYD (2900) KWS OIL & GAS, LLC 150712 MEEKS 1 WILDCAT PIONEER NATURAL RES. USA, INC. 224344 MEEKS 1 INEZ, S.W. (2975) UNION CRUDE COMPANY 133723 MEGAN 1 FENNER (FRIO 4075) RAMSEY PRODUCTION COMPANY, LLC 206294 MEGHAN J 2 YOAKUM, N. (UPR. WILCOX) KARIS RESOURCES, LLC 276278 MEIDER 1 BOYCE (BEDNORZ) RINCON PETROLEUM CORPORATION 217310 MEIDER 3 COQUAT (10500) MILAGRO EXPLORATION, LLC 117175 MEIDER 101 COQUAT (SLICK) MAGNUM PRODUCING, LP 221008 MEIDER DEEP GAS UNIT 5 COQUAT (11,300) MILAGRO EXPLORATION, LLC 217919 MEIDER G. U. 4 COQUAT (MEIDER A, DEEP) MILAGRO EXPLORATION, LLC 204264 MEIDER G.U. 4 4 COQUAT (10500) MILAGRO EXPLORATION, LLC 204265 MEIDER GAS UNIT 2 COQUAT (MEIDER A, DEEP) MILAGRO EXPLORATION, LLC 115245 MEIDER GAS UNIT 2LT COQUAT (10500) MILAGRO EXPLORATION, LLC 107419 MEIDER GAS UNIT 6 COQUAT (10500) MILAGRO EXPLORATION, LLC 248906 MEIDER GAS UNIT 7A COQUAT (MEIDER A, DEEP) MILAGRO EXPLORATION, LLC 209670 MEIDER SU 1 COQUAT (MEIDER A, DEEP) MILAGRO EXPLORATION, LLC 208595 MEIDER SU 2 COQUAT (MASSIVE SERIES) MILAGRO EXPLORATION, LLC 226481 MEIDER SU ET AL GAS UNIT 3 COQUAT (10500) MILAGRO EXPLORATION, LLC 237957 MEINERT UNIT 1 VIENNA (FRIO 2850) WHITE TIGER PRODUCTION 274834 MELBOURN, W. C. C 3 MAGNOLIA BEACH (7500) NEUMIN PRODUCTION COMPANY 124079 MELINDA 1 WEESATCHE, NE. (WILCOX) HILCORP ENERGY COMPANY 190826 MELNAR, FRED EST. UNIT 2 WORD (EDWARDS) MILAGRO EXPLORATION, LLC 100240 MELNAR, FRED ESTATE 1 WORD (EDWARDS) MILAGRO EXPLORATION, LLC 087617 MELNAR, FRED ESTATE 4 WORD (EDWARDS) MILAGRO EXPLORATION, LLC 223240 MELNAR, FRED ESTATE 5 WORD (EDWARDS) MILAGRO EXPLORATION, LLC 220953 MELNAR, FRED ESTATE UNIT 3 WORD (EDWARDS) PIONEER NATURAL RES. USA, INC. 107451 MELNAR, VICTOR 1 WORD,N(8300) MILAGRO EXPLORATION, LLC 154980 MENEFEE 7 TEXANA, NORTH (5850) SEQUOIA FOSSIL FUELS, INC. 112729 MENGERS, WILBER 1 TYNAN, EAST (FRIO 4800) GREAT TEXAS CRUDE INC. 160540 MENN GAS UNIT 1 WAHOO (EDWARDS) PIONEER NATURAL RES. USA, INC. 222455 MENNING 1 FOSS-BROWN (WILCOX) MAGNUM PRODUCING, LP 245422


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MENNING A-129 1 THE RAPTURE (MAGNOLIA) MAGNUM PRODUCING, LP 264004 MENSIK 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 265657 MENSIK 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268659 MENSIK 01 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271814 MENSIK 01 04H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 273139 MENSIK 01 05H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 272140 MERECKA, FRANCES 1 PROVIDENT CITY (WILCOX 9,000) CIMAREX ENERGY CO. OF COLORADO 003832 MERTZ GAS UNIT #2 3 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 227718 MERTZ GAS UNIT NO 2 4 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 231247 MERTZ GAS UNIT NO 2 5 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 236904 MERTZ GAS UNIT NO 2 7 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 244343 MERTZ GAS UNIT NO 2 9 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 249035 MERTZ GAS UNIT NO. 2 2 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 234184 MERTZ GAS UNIT 2 6 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 253289 MESSER, W. H. JR. ET AL 2 BONNIE VIEW, SOUTH (5810) HYQUEST ENERGY, INC. 111271 METTING NEUTZLER 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 259779 METTING NEUTZLER 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 272186 METTING NEUTZLER 01 03H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 271737 METTING NEUTZLER 01 04H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 273118 METZ 1 WEESATCHE, WEST (MELROSE) JETCO EXPLORATION, INC. 113787 MEYER 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271438 MEYER, H. 1 MAYO (3600) EAST TEXAS PRODUCTION MGT. INC 150732 MEYER, OTTO 1 GANADO (3700) KWS OIL & GAS, LLC 151423 MEYER, RAYMOND 1 MARCADO CREEK, E (2390) PONEXCO. INC. 102831 MEYER, RAYMOND 2 MARCADO CREEK, E. (3240) PONEXCO. INC. 077189 MICHAEL 1 ARNECKEVILLE (YEGUA 5275) A & D EXPLORATION COMPANY 221655 MICHAEL 1 COLOGNE (3890) AMPAK OIL COMPANY 242920 MICHAEL 2 COLOGNE (4700) AMPAK OIL COMPANY 240555 MICHAEL 3 COLOGNE (4040) AMPAK OIL COMPANY 240567 MICHOT, MRS. KATE B. 2 SHERIFF (F-2) FORMATION RESOURCES LLC 077388 MIDWAY 1 TYNAN, EAST (FRIO 4800) GREAT TEXAS CRUDE INC. 170268 MIDWAY 2 TYNAN (3600) GREAT TEXAS CRUDE INC. 170974 MIDWAY 3 TYNAN, EAST (FRIO 4800) GREAT TEXAS CRUDE INC. 176657 MIGL MITCHELL 3 SPEAKS, SW. (MAGNOLIA) XTO ENERGY INC. 214568 MIGL-MITCHELL 1 SPEAKS, SW. (WILCOX -A-) XTO ENERGY INC. 254604 MIGL-MITCHELL 3 SPEAKS, SW. (SIMPSON) XTO ENERGY INC. 170015 MIGL-MITCHELL 4 SPEAKS, SW (MIDDLE WILCOX-CONS.) XTO ENERGY INC. 258263 MIGL-MITCHELL 4 SPEAKS, SW. (RAINBOW) XTO ENERGY INC. 170720 MIGL-MITCHELL 5 SPEAKS, SW. (MAGNOLIA) XTO ENERGY INC. 172630 MIGL-MITCHELL 6 SPEAKS, SW (MIDDLE WILCOX-CONS.) XTO ENERGY INC. 181491 MIGL-QUINN 1 SPEAKS, SW. (RAINBOW) CRIMSON EXPLORATION OPER., INC. 186761 MIGL-QUINN 2 SPEAKS, SW. (RAINBOW) CRIMSON EXPLORATION OPER., INC. 166858 MIGL-QUINN 2A SPEAKS, SW (MIDDLE WILCOX-CONS.) CRIMSON EXPLORATION OPER., INC. 173089 MIGL-QUINN 3A SPEAKS, SW (MIDDLE WILCOX-CONS.) CRIMSON EXPLORATION OPER., INC. 174765 MIGL-QUINN 4 SPEAKS, SW. (SIMPSON) CRIMSON EXPLORATION OPER., INC. 184664 MIGL-QUINN 5 SPEAKS, SW. (RAINBOW) CRIMSON EXPLORATION OPER., INC. 174113 MIGL-QUINN 9 SPEAKS, SW. (MAGNOLIA) CRIMSON EXPLORATION OPER., INC. 242924 MIGL-QUINN 9 SPEAKS, SW. (SIMPSON) CRIMSON EXPLORATION OPER., INC. 254732 MIGUELITA SCANIO 14 REFUGIO-FOX (6600) ACOCK/ANAQUA OPERATING CO., LP 269669 MIGUELITA SCANIO 20 REFUGIO-FOX (6600) ACOCK/ANAQUA OPERATING CO., LP 244399 MIGURA 1 DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 252842


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MIGURA B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266757 MIGURA 1 UNIT 2 DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 259772 MIKE STAUSS 26 MAURBRO (DINGER SAND) KD ENERGY, LLC 261788 MILAGROS RANCH 1 HEARD RANCH (4300) MEGO RESOURCES, LLC 250755 MILAGROS RANCH 4 HEARD RANCH (4400) MEGO RESOURCES, LLC 266613 MILAGROS RANCH Y 1 WILDCAT SANTA ROSA OPERATING, LLC 271762 MILLER 1 CAESAR (HOCKLEY 2170) TEXACAL, INC. 105834 MILLER 1 OAKVILLE (WILCOX CONS.) SOUTHERN RESOURCE COMPANY 223626 MILLER 1 PROVIDENT CITY (FRIO 3410) FIELDWOOD ONSHORE LLC 208002 MILLER ALBRECHT UNIT 1 A MISSION VALLEY, WEST (MASSIVE-1) XTO ENERGY INC. 003428 MILLER-ALLEN GAS UNIT 1 PROVIDENT CITY NE (LWR WX. CONS) NEWFIELD EXPLORATION COMPANY 184594 MILLER-THOMAS GAS UNIT 1 COTTONWOOD CREEK, S. (FRIO 3050) CASKIDS OPERATING COMPANY 251499 MILNER 1 HELEN GOHLKE (WILCOX, LO.) HILCORP ENERGY COMPANY 239490 MISSION VALLEY 1 MISSION VALLEY (10,220) MODERN EXPLORATION, INC. 261990 MITCHELL 2 MUDHILL (HOCKLEY) GAITHER PETROLEUM CORPORATION 252149 MITCHELL -B- 2 MISSION RIVER (6300) SNOWDEN, H. W. 003421 MITCHELL -B- 6 MISSION RIVER (6300) SNOWDEN, H. W. 003422 MITCHELL -D- 9 MISSION RIVER (6100) SNOWDEN, H. W. 003417 MITCHELL, JOHN N. 2 L MISSION RIVER (6300) HIGH PLAINS GAS SYSTEMS, INC. 031072 MIXON UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 260304 MIXON UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270237 MIXON UNIT A 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270245 MIXON 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266452 MIZE, R. N. 1 COLOGNE (2800) AMPAK OIL COMPANY 173228 MM BROOKING #3 3 SOUTHERN COMFORT (FRIO) CORUM PRODUCTION COMPANY 272724 MOBIL UNIT A 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271425 MOBIL UNIT A 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271426 MOBIL UNIT A 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271428 MOBIL UNIT B 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270927 MOBIL UNIT B 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270565 MOBIL UNIT B AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 274682 MOBIL UNIT B AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 274688 MOBIL UNIT C 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 269119 MOBIL UNIT C 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270485 MOBIL UNIT C 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 276260 MOBIL UNIT C 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 276072 MOBIL UNIT D 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268748 MOBIL UNIT D 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 274573 MOBIL UNIT D AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 276396 MOBIL UNIT D AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 276361 MOBIL UNIT D AC 3H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 276367 MOC A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268536 MOC B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268024 MOC C 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268019 MOCZYGEMBA, A 2 PERSON (EDWARDS) BLACKBRUSH O & G, LLC 196962 MOCZYGEMBA, C.J.,UNIT 1 PANNA MARIA (EDWARDS) BLACKBRUSH O & G, LLC 188111 MOCZYGEMBA, J. S. 1 PANNA MARIA (EDWARDS) PRIDE ENERGY COMPANY 033542 MOCZYGEMBA, R. J. NCT-2 5 PANNA MARIA (EDWARDS) ENERQUEST OPERATING L.L.C. 038971 MOLNOSKEY, VICTOR 1 MOULTON (JACKSON) SOUTHERN OIL & GAS CO, LTD. 072663 MOLSON 1 TIGER BEND (WILCOX) LGDC CORPORATION 221864 MONECKE, BERTHA 1 SPEARY (WILCOX 9500) OKIE OPERATING COMPANY, LTD. 022964


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MONSON 2 MONSON (QUEEN CITY) MILAGRO EXPLORATION, LLC 222479 MONSON 4 MONSON (QUEEN CITY) MILAGRO EXPLORATION, LLC 220900 MONT GAS UNIT NO. 1 1 MONT (WILCOX 10,900) TRIO CONSULTING & MANAGEMENT,LLC 203645 MONTE VON ROSENBERG G. U. #1 11 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 175291 MONTEOLA GAS UNIT 1 WILDCAT STATOIL TEXAS ONSHORE PROP LLC 250648 MOODY RANCH 1 MOODY RANCH PITCHFORK OIL & GAS, INC. 066521 MOODY RANCH 1 MOODY RANCH (7300) PITCHFORK OIL & GAS, INC. 242152 MOORE-STAFFORD 1 MORALES, NORTH (WILCOX) C & E OPERATING, INC. 254487 MOORE, BILL ET AL 1 HOUDMAN (PETTUS B) BRIGHT NORTH EXPLORATIONS LTD. 153206 MORGAN 2 KARON (MACKHANK, LOWER) MOSBACHER ENERGY COMPANY 275805 MORGAN UNIT 1H SUGARKANE (CRETACEOUS) MARATHON OIL EF LLC 258278 MORGAN UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270279 MORGAN UNIT 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 269192 MORGAN UNIT AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 275972 MORGAN, A. G. 1 COQUAT (SLICK UPPER) MOSBACHER ENERGY COMPANY 066727 MORGAN, ADOLPH G. UNIT 1 COQUAT (SLICK UPPER) MOSBACHER ENERGY COMPANY 044273 MORITZ, WILLIE H. GAS UNIT 1 MEYERSVILLE (MASSIVE I) MARWELL PETROLEUM LTD PARTNRSHIP 003171 MORRILL UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 273131 MORRILL UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 273135 MORRILL UNIT C 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 273530 MORRIS 1 NORMANNA (HOCKLEY 3525) MOHICAN OPERATING, L.L.C. 247498 MORRISON 4 MARSHALL (FRIO VII) CORE E & P CORP. 130897 MORRISON 6 MARSHALL (FRIO II B) CORE E & P CORP. 131840 MORROW GAS UNIT NO 1 1 SAWFISH (EDWARDS) PIONEER NATURAL RES. USA, INC. 246338 MORTON 2 WAYSIDE (FRIO 3700) VIPER S.W.D., LLC 257636 MOSCATELLI 1A ELOISE, W. (NEISSER 6950) CORUM PRODUCTION COMPANY 208014 MOSCATELLI 2 ELOISE, W. (NEISSER 6865) CORUM PRODUCTION COMPANY 225064 MOSLEY 1 DREYER (2900) XTO ENERGY INC. 139459 MOTL UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266816 MOTL UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266843 MOTT, JULIA GAS UNIT 1H YOAKUM (EDWARDS) WHITING OIL AND GAS CORPORATION 070281 MOTT, JULIA GAS UNIT #5 9 YOAKUM (WILCOX 7450) WHITING OIL AND GAS CORPORATION 212209 MOTT, JULIA GAS UNIT NO.2A 2 YOAKUM (EDWARDS) WHITING OIL AND GAS CORPORATION 084420 MOTT, JULIA GAS UNIT 2A 6H YOAKUM (EDWARDS) WHITING OIL AND GAS CORPORATION 208887 MOY A 1H SUGARKANE (EAGLE FORD) DEVON ENERGY PRODUCTION CO, L.P. 269565 MOY UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 264723 MRS FANNIE V W HEARD 68 GRETA (L-15) HILCORP ENERGY COMPANY 230684 MRS UNIT 1 NORBEE (HOCKLEY 3700) ENCO EXPLORATION COMPANY 272536 MRS. FANNIE V. W. HEARD 39 GRETA (L-15) HILCORP ENERGY COMPANY 253334 MRS. FANNIE V. W. HEARD 1 TOM OCONNOR (5200, EAST) HILCORP ENERGY COMPANY 255440 MRS. FANNIE V. W. HEARD 19 TOM OCONNOR (5200, EAST) HILCORP ENERGY COMPANY 259998 MRS. FANNIE V. W. HEARD 41 TOM OCONNOR (4950) HILCORP ENERGY COMPANY 261105 MRS. FANNIE V. W. HEARD 51 TOM OCONNOR (3600) HILCORP ENERGY COMPANY 261241 MRS. FANNIE V. W. HEARD 73 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 263649 MRS. FANNIE V. W. HEARD 87 GRETA (L- 8) HILCORP ENERGY COMPANY 256512 MRS. FANNIE V. W. HEARD 88 TOM O'CONNOR (2830) HILCORP ENERGY COMPANY 250229 MRS. FANNIE V. W. HEARD 92 GRETA (O-1-B) HILCORP ENERGY COMPANY 256514 MRS. FANNIE V. W. HEARD 106 TOM OCONNOR (5450 SAND) HILCORP ENERGY COMPANY 247655 MT. GILEAD BAPTIST CHURCH 1 FRIO (3580) VIPER S.W.D., LLC 266637 MUDD, MARY MAUDE 3 MONSON (QUEEN CITY) MILAGRO EXPLORATION, LLC 059547 MUECKE 1 BOYCE (HOCKLEY) NELSON, JAMES L. 143106


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ MUELLER 1 COLETTO CREEK (2100) PETRA OLEUM CORP. 269187 MUELLER 1 KEMPER, EAST (5650) EVEREST RESOURCE COMPANY 213269 MUELLER 1 KOERTH (WILCOX 11150) STRAND ENERGY, L.C. 230779 MUELLER 2 KOERTH (WILCOX 11150) STRAND ENERGY, L.C. 242786 MUELLER FAMILY 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 265507 MUELLER GAS UNIT 2 WORD, N. (EDWARDS) BOPCO, L.P. 112256 MUELLER GAS UNIT 3 WORD, N. (EDWARDS) BOPCO, L.P. 116315 MUELLER GAS UNIT 4 WORD, N. (EDWARDS) BOPCO, L.P. 153703 MUELLER GAS UNIT 5 WORD, N. (EDWARDS) BOPCO, L.P. 161425 MUELLER GAS UNIT 6 WORD, N. (EDWARDS) BOPCO, L.P. 164428 MUELLER GAS UNIT 7 WORD, N. (EDWARDS) BOPCO, L.P. 212477 MUELLER GAS UNIT ROGENE GREEN 1 CHRISTMAS, DEEP (WILCOX 10800) LRE OPERATING, LLC 260824 MUELLER 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 265662 MUELLER, A. W. HEIRS 1-C GREEN LAKE, WEST (8850) TEXAS INDEPENDENT EXPLOR LTD. 175302 MUELLER, A.W. HEIRS 1-T GREEN LAKE, WEST (SHERIFF #3) TEXAS INDEPENDENT EXPLOR LTD. 138708 MUENICH 1 SAWFISH (EDWARDS) PIONEER NATURAL RES. USA, INC. 232895 MUENICH 2 SAWFISH (EDWARDS) PIONEER NATURAL RES. USA, INC. 230767 MUENICH 3 SAWFISH (EDWARDS) PIONEER NATURAL RES. USA, INC. 231752 MUENICH 4 SAWFISH (EDWARDS) PIONEER NATURAL RES. USA, INC. 234214 MUHLSTEIN UNIT 1 SAINT ARMO (YEGUA 5100) VENTEX OPERATING CORP. 251334 MUIR B 1H EAGLEVILLE (EAGLE FORD-2) DEVON ENERGY PRODUCTION CO, L.P. 259941 MUIR C 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 260035 MUIR D 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 262037 MUIR D 4H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 270725 MURPHY-SINCLAIR UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 267436 MURPHY-SINCLAIR UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270324 MURPHY-SINCLAIR UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 274454 MURPHY, J. J. 1 LITTLE FLOWER (FRIO 5640) O LEARY, JOHN C. 002640 MUSSELMAN 1 HELEN GOHLKE ( 850) SURE FLOW OIL & GAS, INC. 159647 MUSSELMAN 1 SAWFISH (EDWARDS) PIONEER NATURAL RES. USA, INC. 233767 MUSSELMAN 1 WOLF DEN (10800 SAND) MILAGRO EXPLORATION, LLC 231667 MUSSELMAN 5 SALEM (1900) CRESTWOOD ENERGY, L.L.C. 276040 MUSSELMAN C 1 SALEM, EAST (2600 MIOCENE) ALTA MESA SERVICES, LP 231650 MUSSELMAN D 1 SALEM, EAST (2600 MIOCENE) ALTA MESA SERVICES, LP 239400 MUSSELMAN GU 1 SALEM, S.E. (2930) ALTA MESA SERVICES, LP 239397 MUSSELMAN RANCHES 1 FRIAR RANCH, S. (CONSOLIDATED) HILCORP ENERGY COMPANY 262896 MUSSELMAN RANCHES, INC. 1 RAMBLER (MIGURA) CRIMSON EXPLORATION OPER., INC. 170612 MUSSELMAN RANCHES, INC. 2 WILDCAT CRIMSON EXPLORATION OPER., INC. 180655 MUSSELMAN RANCHES, INC. 2 WILDCAT CRIMSON EXPLORATION OPER., INC. 180656 MUSSELMAN RANCHES, INC. 2 RAMBLER (MIGURA) CRIMSON EXPLORATION OPER., INC. 174128 MUSSELMAN, ROSE 3A SALEM (2000) NORTH SHORE ENERGY, L.L.C. 125095 MUTCHLER-ROTH UNIT 2 TULETA, WEST (HOCKLEY 3100) INLAND OCEAN, INC. 216488 MYRA KELLEY 04 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 260383 MYRA KELLEY 05 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268197 MYRA KELLEY 06 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 267658 MYRA SUE KELLEY GAS UNIT NO 3 1 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 236866 MYRA SUE KELLEY GAS UNIT NO 3 2 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 243873 MYRA SUE KELLEY GAS UNIT NO 3 4 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 255162 MYRA SUE KELLEY GAS UNIT 2 1 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 251201 MYRA SUE KELLEY GAS UNIT 3 3 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 239213 N STEINMANN UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266815


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ N STEINMANN UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266818 N. P. U. (RAY 97) 36 TULSITA-WILCOX ( 6800 REKLAW) SYDSON ENERGY, INC. 166372 N. P. U. (SCARBOROUGH 3) 35 TULSITA-WILCOX ( 6800 REKLAW) TRINITY RIVER ENERGY OPER, LLC 166831 N.P.C. GAS UNIT 1 PROVIDENT CITY (WILCOX 12,000) NEWFIELD EXPLORATION COMPANY 190261 N.P.U. (DROOMGOOLE 1) 47 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 228715 N.P.U. (RAY 98) 39 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 173609 N.P.U. (SCARBOROUGH 4) 49 TULSITA-WILCOX ( SLICK) TRINITY RIVER ENERGY OPER, LLC 233563 NANCE 1A PLACEDO IWR OPERATING, LLC 252613 NANCE 9 PLACEDO, EAST (5200) IWR OPERATING, LLC 166158 NANCY STEWART 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 259861 NANCY STEWART 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269558 NANCY STEWART 01 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269551 NANCY STEWART 01 04H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269560 NATHO A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 263734 NATHO B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267091 NATHO UNIT 1 MALO DOMINGO (WILCOX 10300) ZACHRY EXPLORATION, LLC 274135 NAVIDAD RIVER ET AL 5 WESTHOFF (COMBINED ASSOCIATED) BXP OPERATING, LLC 252924 NAVIDAD RIVER UNIT 2R WESTHOFF (COMBINED ASSOCIATED) BXP OPERATING, LLC 234220 NEESE 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 197470 NEIMANN, EMIL 9 BONNIE VIEW (4200 D-1) MISSION RIVER SYSTEMS, INC. 000943 NELLER GAS UNIT 1 1 SPEARY (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 250464 NELLER GAS UNIT 1 A 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 271164 NELLER-RHODES TRUST (SA) A 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 273126 NELSON 2 CLAYTON (WILCOX 6875) INLAND OCEAN, INC. 241153 NELSON 4 CLAYTON (WILCOX 6875) INLAND OCEAN, INC. 234239 NELSON, C. S. 3 GEORGE WEST, WEST (9500) OXY USA INC. 272720 NELSON, C. S. 4 LIMES (WILCOX 9500) OXY USA INC. 094293 NELSON, C. S. 5 LIMES (WILCOX 9900) OXY USA INC. 094294 NELSON, C. S. 6 LIMES (WILCOX F-1) OXY USA INC. 208013 NELSON, C. S. 9 LIMES (WILCOX F-2) OXY USA INC. 208131 NELSON, C. S. 11 GEORGE WEST, WEST (10430) OXY USA INC. 174924 NELSON, C. S. 12 GEORGE WEST, WEST (10430) OXY USA INC. 217590 NELSON, C. S. 8 GEORGE WEST, WEST (9500) OXY USA INC. 152286 NELSON, C. S. TRUST ET AL 7 LIMES (WILCOX F-1) SANDEL OPERATING COMPANY 147165 NELSON, M. B. 1 GEORGE WEST, SOUTH (FRIO -N-) E. & R. OIL COMPANY 001706 NEUHAUS 1 A VIENNA (WILCOX, MIDDLE U) DEVON ENERGY PRODUCTION CO, L.P. 231359 NEUHAUS UNIT 2 WORD (5800) BOPCO, L.P. 176025 NEUHAUS UNIT 2 C WORD, N. (7400) BOPCO, L.P. 058374 NEUHAUS UNIT 3 WORD, N. (7800) BOPCO, L.P. 198943 NEUHAUS UNIT 3 WORD, N. (8100) BOPCO, L.P. 175306 NEUHAUS UNIT 4 HALLETSVILLE (SIMMONS) BOPCO, L.P. 269156 NEUHAUS-SANDRA 1 PROVIDENT CITY (WILCOX 9,500) FIELDWOOD ONSHORE LLC 188882 NEUHAUS-SANDRA 2 PROVIDENT CITY (WILCOX 9,500) FIELDWOOD ONSHORE LLC 192120 NEUHAUS, E. A. 1 PROVIDENT CITY (WILCOX 8,600) FIELDWOOD ONSHORE LLC 003808 NEUHAUS, E. T. 2 PROVIDENT CITY (WILCOX 13000) NEWFIELD EXPLORATION COMPANY 181921 NEUHAUS, E. T. 7 PROVIDENT CITY (WILCOX A-1) FIELDWOOD ONSHORE LLC 101815 NEUHAUS, E.T. 1 PROVIDENT CITY NE (LWR WX. CONS) NEWFIELD EXPLORATION COMPANY 236103 NEUHAUS, E.T. 2 PROVIDENT CITY (WILCOX W-0) NEWFIELD EXPLORATION COMPANY 221330 NEUHAUS, F. W. 1 PROVIDENT CITY (WILCOX 8,500) FIELDWOOD ONSHORE LLC 003800 NEUHAUS, F. W. 1 PROVIDENT CITY (WILCOX 10800) NEWFIELD EXPLORATION COMPANY 192632 NEUHAUS, F. W. 2 PROVIDENT CITY (WILCOX 8,500) FIELDWOOD ONSHORE LLC 003801


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ NEUHAUS, F. W. 3 PROVIDENT CITY (WILCOX 8,500) FIELDWOOD ONSHORE LLC 003802 NEUHAUS, F. W. 3 PROVIDENT CITY (YEGUA L-2) FIELDWOOD ONSHORE LLC 137493 NEUHAUS, F. W. 4 PROVIDENT CITY (YEGUA L-Z EAST) FIELDWOOD ONSHORE LLC 161515 NEUHAUS, F. W. 6A PROVIDENT CITY (FRIO 3175) FIELDWOOD ONSHORE LLC 188608 NEUHAUS, F. W. 9 PROVIDENT CITY (FRIO 3550) FIELDWOOD ONSHORE LLC 120398 NEUHAUS, F. W. 11D PROVIDENT CITY (5800) FIELDWOOD ONSHORE LLC 062062 NEUHAUS, F. W. 13 PROVIDENT CITY (WILCOX 8,500) FIELDWOOD ONSHORE LLC 180814 NEUHAUS, F. W. 14 PROVIDENT CITY (FRIO 3550) FIELDWOOD ONSHORE LLC 221137 NEUHAUS, F. W. 15 PROVIDENT CITY (YEGUA N, WEST) FIELDWOOD ONSHORE LLC 184643 NEW 1 C JOHNSTONE (MIDDLE FRIO) DOUBLE PLAY OIL & GAS, INC 238854 NEW 5 JOHNSTONE (MIDDLE FRIO) DOUBLE PLAY OIL & GAS, INC 255239 NEW "A" 4 JOHNSTONE (LOWER FRIO) DOUBLE PLAY OIL & GAS, INC 247541 NEW ESTATE 1 JOHNSTONE (MIDDLE FRIO) DOUBLE PLAY OIL & GAS, INC 244870 NEW PETTUS UNIT 506 BURNELL, SOUTH (1000) TIDEWATER MINERALS CORPORATION 256830 NEW-HENDERSON UNIT 1 MONT (WILCOX 10640) TRIO CONSULTING & MANAGEMENT,LLC 216104 NEW, R. 1 C. A. WINN (HOCKLEY 4300) KALER ENERGY CORP. 241718 NEWBERRY 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266458 NEWTON GOHMERT 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 265688 NEWTON-WELDER GU 2 WAYNO BUENO (WILCOX MASSIVE) A.O.E. OPERATORS, INC. 189428 NICHOLS GAS UNIT 1 1 PAWNEE (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 220257 NICHOLS 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269684 NICHOLS, J. T. GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 265493 NICHOLSON 2 CLAYTON (MACKHANK 1) GREATER SOONER HOLDINGS, INC. 219495 NICHOLSON, DOROTHY 1 CLAYTON (SLICK 6450) GREATER SOONER HOLDINGS, INC. 149858 NICHOLSON, DOROTHY 4 CLAYTON, NE. (QUEEN CITY -C-) GREATER SOONER HOLDINGS, INC. 163136 NICKEL 1 TYL (WILCOX 10,000) DEWBRE PETROLEUM CORPORATION 175623 NIEBUHR, A. L. 7 D GANADO, WEST (5100) PREMIER NATURAL RESOURCES, LLC 064386 NIEMANN 2 LA ROSA (4800) GARDNER, J. B. 061358 NIEMANN, EMIL 3 BONNIE VIEW (4250) MISSION RIVER SYSTEMS, INC. 127314 NIEMANN, EMIL 4 BONNIE VIEW (F-3950) MISSION RIVER SYSTEMS, INC. 127313 NIEMEIER 1 NORDHEIM, SW. (12,000) ARCADIA OPERATING, LLC 197979 NITSCH UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 264924 NITSCH UNIT 'B' 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270335 NITSCH UNIT 'B' 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270336 NITSCHMANN 1 MARSHALL (MIDDLE WILCOX) BALLARD EXPLORATION COMPANY,INC. 265041 NOLEN, H. 1 SECLUSION (COCKFIELD 6100) CENIZA PETROLEUM, INC. 145765 NONA BERRY DAVIS 60 YOUGEEN (VICKSBURG 3700) WELDER EXPLORATION & PROD., INC. 233241 NORDAN & MORRIS-THOMAS O'CONNOR 7 TOM O'CONNOR (5025) T-C OIL COMPANY, LLC 258691 NORDAN & MORRIS-THOMAS O'CONNOR 9 TOM O'CONNOR (5350 SAND) T-C OIL COMPANY, LLC 260559 NORDEIM UNIT 5 NORDHEIM (WILCOX, LOWER) SUE-ANN OPERATING, L.C. 215732 NORDHEIM 1 NORDHEIM (WILCOX, LOWER) SUE-ANN OPERATING, L.C. 065695 NORDHEIM GAS UNIT 2H KAWITT (EDWARDS) ABRAXAS PETROLEUM CORPORATION 247342 NORDHEIM UNIT 1 NORDHEIM (WILCOX #3) SUE-ANN OPERATING, L.C. 199043 NORDHEIM UNIT 2 NORDHEIM (WILCOX 9900) SUE-ANN OPERATING, L.C. 207993 NORDHEIM UNIT 10 NORDHEIM (WILCOX #2) SUE-ANN OPERATING, L.C. 076123 NORDHEIM UNIT 11 NORDHEIM (WILCOX, LOWER) SUE-ANN OPERATING, L.C. 055495 NORDHEIM UNIT 15 NORDHEIM (WILCOX #1) SUE-ANN OPERATING, L.C. 146761 NORDHEIM UNIT 15 NORDHEIM (WILCOX, LOWER) SUE-ANN OPERATING, L.C. 065617 NORDHEIM UNIT 16 WILDCAT SUE-ANN OPERATING, L.C. 156657 NORDHEIM UNIT 16 NORDHEIM (WILCOX 9900) SUE-ANN OPERATING, L.C. 171211 NORMA STEINMANN 1 SAWFISH (EDWARDS) PIONEER NATURAL RES. USA, INC. 228004


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ NORMA STEINMANN GAS UNIT NO 1 3 SAWFISH (EDWARDS) PIONEER NATURAL RES. USA, INC. 231269 NORRELL 2 WEESATCHE,WEST (HOLT SAND 10880) KEBO OIL & GAS, INC. 106627 NORRELL, C. L. 1D WEESATCHE, SOUTH ( FRIO 3000) KEBO OIL & GAS, INC. 193836 NORTH PROVIDENT CITY G.U. 2 PROVIDENT CITY (WILCOX 13000) NEWFIELD EXPLORATION COMPANY 255266 NPU ( MUDD, O A -A1) 26 TULSITA-WILCOX ( 6800 REKLAW) TRINITY RIVER ENERGY OPER, LLC 158906 NPU ( PORTER -3) 18 TULSITA-WILCOX ( 6800 REKLAW) TRINITY RIVER ENERGY OPER, LLC 041006 NPU ( PORTER-1) 3 TULSITA-WILCOX ( LULING) TRINITY RIVER ENERGY OPER, LLC 004536 NPU ( RAY -1 ) 12 TULSITA-WILCOX ( SLICK) TRINITY RIVER ENERGY OPER, LLC 004545 NPU ( RAY -10U ) 28 U TULSITA-WILCOX ( 7,600 LOWER) TRINITY RIVER ENERGY OPER, LLC 074988 NPU ( RAY -5) 22 TULSITA-WILCOX ( 6800 REKLAW) TRINITY RIVER ENERGY OPER, LLC 086170 NPU ( RAY -6 ) 31 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 004557 NPU ( RAY -96 ) 34 TULSITA-WILCOX ( 6800 REKLAW) TRINITY RIVER ENERGY OPER, LLC 163134 NPU ( SCARBOROUGH -1) 19 TULSITA-WILCOX ( 6800 REKLAW) TRINITY RIVER ENERGY OPER, LLC 053310 NPU ( UNION-PORTER -1 ) 27 TULSITA-WILCOX ( 6800 REKLAW) TRINITY RIVER ENERGY OPER, LLC 160795 NPU (H&D-NIEHAUS -1) 25 TULSITA-WILCOX ( 6800 REKLAW) TRINITY RIVER ENERGY OPER, LLC 158812 NPU (MUDD, O J -1 ) 16 TULSITA-WILCOX ( 6800 REKLAW) TRINITY RIVER ENERGY OPER, LLC 004525 NPU (MUDD, O.A. 3) 43 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 220915 NPU (MUDD, O.A. 3) 43 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 221089 NPU (MUDD, O.J. - 2) 38 TULSITA-WILCOX (7,900) TRINITY RIVER ENERGY OPER, LLC 219850 NPU (MUDD, OJ-2) 38 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 136127 NPU (O A MUDD 4A) 46 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 246204 NPU (O A MUDD 6A) 59 TULSITA-WILCOX (7,900) TRINITY RIVER ENERGY OPER, LLC 233417 NPU (O A MUDD 7-A) 60 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 233790 NPU (O A MUDD 8A) 64 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 253940 NPU (O A MUDD 9A) 65 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 253952 NPU (O.A. MUDD 5-A) 55 TULSITA-WILCOX (7,900) TRINITY RIVER ENERGY OPER, LLC 257879 NPU (O.J. MUDD 3) 61 TULSITA-WILCOX (8000) TRINITY RIVER ENERGY OPER, LLC 257803 NPU (PORTER -4L) 10-L TULSITA-WILCOX ( LULING) TRINITY RIVER ENERGY OPER, LLC 146750 NPU (PORTER -4U ) 10-U TULSITA-WILCOX ( 7,700) TRINITY RIVER ENERGY OPER, LLC 073338 NPU (PORTER 6) 42 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 225914 NPU (PORTER-5) 2 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 145440 NPU (RAY -10L ) 28 L TULSITA-WILCOX ( 7,700) TRINITY RIVER ENERGY OPER, LLC 074989 NPU (RAY -12 ) 23 TULSITA-WILCOX ( 6800 REKLAW) TRINITY RIVER ENERGY OPER, LLC 139059 NPU (RAY -4 ) 21 TULSITA-WILCOX ( 6800 REKLAW) TRINITY RIVER ENERGY OPER, LLC 084417 NPU (RAY -7 ) 32 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 033901 NPU (RAY 106) 41 C TULSITA-WILCOX ( MASSIVE) TRINITY RIVER ENERGY OPER, LLC 219831 NPU (RAY 106-T) 41 T TULSITA-WILCOX ( 7,700) TRINITY RIVER ENERGY OPER, LLC 200187 NPU (RAY 109) 44 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 220892 NPU (RAY 110) 45 TULSITA-WILCOX ( SLICK) TRINITY RIVER ENERGY OPER, LLC 229713 NPU (RAY 112) 56 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 232873 NPU (RAY 114) 51 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 231199 NPU (RAY 118) 53 TULSITA-WILCOX ( 7,600 LOWER) TRINITY RIVER ENERGY OPER, LLC 234178 NPU (RAY 119) 54 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 244745 NPU (RAY 121) 57 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 233422 NPU (ROCKHILL SMITH 1) 62 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 233780 NPU (SCARBOROUGH -1) 19 TULSITA-WILCOX ( SLICK) TRINITY RIVER ENERGY OPER, LLC 266675 NPU (SCARBOROUGH -2) 9 TULSITA-WILCOX ( MACKHANK) TRINITY RIVER ENERGY OPER, LLC 262819 NPU (SMITH-2) 37 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 130383 NPU (SPIELHAGEN -A1 ) 20 TULSITA-WILCOX ( 6800 REKLAW) TRINITY RIVER ENERGY OPER, LLC 076384 NPU (SPIELHAGEN -A2) 8 TULSITA-WILCOX ( LULING) TRINITY RIVER ENERGY OPER, LLC 063426 NPU (UNION-RAY -59 ) 24 TULSITA-WILCOX ( 6800 REKLAW) TRINITY RIVER ENERGY OPER, LLC 143376


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ NPU (UNION-SPIELHAGAN-1) 6 TULSITA-WILCOX ( LULING) TRINITY RIVER ENERGY OPER, LLC 039719 NSE KLIMITCHEK MEGAN 1 SPEAKS (3100) NORTH SHORE ENERGY, L.L.C. 240169 NSE KLIMITCHEK MEGAN 2 HOPE (JACOBS 2980) NORTH SHORE ENERGY, L.L.C. 235953 NSE O'BRIEN 2 BLANCONIA (FOX SAND) NORTH SHORE ENERGY, L.L.C. 234648 NSE O'BRIEN 5 BLANCONIA (4960) NORTH SHORE ENERGY, L.L.C. 247294 NSE-HARKINS 1 SARCO CREEK, WEST (4650) NORTH SHORE ENERGY, L.L.C. 256872 O CONNOR, DENNIS ET AL -D- D 2 L TERRELL POINT (3975) T-C OIL COMPANY, LLC 045263 O. A. LAMPLEY GAS UNIT #1 14 DRY HOLLOW (ROCHELLE SAND) CANTERA OPERATING, LLC 188640 O. A. LAMPLEY GU 1 7 DRY HOLLOW (ROCHELLE SAND) CANTERA OPERATING, LLC 173951 O. A. LAMPLEY GU 1 8 DRY HOLLOW (ROCHELLE SAND) CANTERA OPERATING, LLC 175280 O. A. LAMPLEY GU 1 8 DRY HOLLOW (UPPER ROCHELLE) CANTERA OPERATING, LLC 218985 O. A. LAMPLEY GU 1 9 DRY HOLLOW (WILCOX MASSIVE) CANTERA OPERATING, LLC 175890 O. A. LAMPLEY GU 1 11 DRY HOLLOW (WILCOX LAMPLEY) CANTERA OPERATING, LLC 177327 O. A. LAMPLEY GU 1 12 DRY HOLLOW (WILCOX MASSIVE) CANTERA OPERATING, LLC 177210 O. A. LAMPLEY GU 1 13 DRY HOLLOW (UPPER ROCHELLE) CANTERA OPERATING, LLC 178752 O. A. LAMPLEY GU 1 13 DRY HOLLOW (WILCOX DAGG, NE) CANTERA OPERATING, LLC 237961 O. A. LAMPLEY GU 1 15 DRY HOLLOW (WILCOX MASSIVE) CANTERA OPERATING, LLC 191749 O. A. LAMPLEY GU 1 16 DRY HOLLOW (WILCOX MASSIVE) CANTERA OPERATING, LLC 205897 O. M. LANDER UNIT 2 U HEYSER (8100) AURORA RESOURCES CORPORATION 117867 O. TERRY 1 HOPE, NE. (2700) STRATCO OPERATING CO., INC. 215874 O.A. LAMPLEY GU 1 1 DRY HOLLOW (11024) CANTERA OPERATING, LLC 156538 O.A. LAMPLEY GU 1 4 DRY HOLLOW (WILCOX DAGG, NE) CANTERA OPERATING, LLC 135274 O.A. LAMPLEY GU 1 5 DRY HOLLOW (ROCHELLE SAND) CANTERA OPERATING, LLC 171822 O.A. LAMPLEY GU 1 5 DRY HOLLOW (UPPER ROCHELLE) CANTERA OPERATING, LLC 176842 O.A. LAMPLEY GU 1 6 DRY HOLLOW (WILCOX MASSIVE) CANTERA OPERATING, LLC 173945 O.A. LAMPLEY GU 1 10 U DRY HOLLOW (WILCOX LAMPLEY) EP ENERGY E&P COMPANY, L.P. 219627 O.M. LANDER UNIT 2L HEYSER (8200) AURORA RESOURCES CORPORATION 142816 O' BRIEN 1 HEARD RANCH (FRIO Z) MEGO RESOURCES, LLC 256909 O'BRIEN 1 BLANCONIA (FOX SAND) ANDERSON OIL LTD. 249213 O'BRIEN 1 BLANCONIA (2850) ANDERSON OIL LTD. 234332 O'BRIEN 1 MURPHY SISTERS (FRIO 3600) GARRISON LTD. 233330 O'BRIEN 2 BLANCONIA (4450) ANDERSON OIL LTD. 240501 O'BRIEN 3 BLANCONIA (3650) ANDERSON OIL LTD. 267661 O'BRIEN - MORRIS UNIT 1 MEDIO CREEK (3000) T-C OIL COMPANY, LLC 260688 O'BRIEN - MORRIS UNIT 1 MEDIO CREEK (3800) T-C OIL COMPANY, LLC 245437 O'BRIEN - MORRIS UNIT 1 MEDIO CREEK (4100) T-C OIL COMPANY, LLC 254723 O'BRIEN -C- UNIT 1 BLANCONIA (3700) T-C OIL COMPANY, LLC 265198 O'BRIEN -C- UNIT 1 MEDIO CREEK (3350) T-C OIL COMPANY, LLC 269205 O'BRIEN -C- UNIT 1 MEDIO CREEK (3900) T-C OIL COMPANY, LLC 259773 O'BRIEN "J&L", J. M. 1J GRETA (O-4) ACOCK/ANAQUA OPERATING CO., LP 133722 O'BRIEN B (S), J.M. 2 GRETA (L- 5) ACOCK/ANAQUA OPERATING CO., LP 143399 O'BRIEN RANCH 1A MURPHY SISTERS (FRIO 3600) WELDER EXPLORATION & PROD., INC. 225506 O'BRIEN RANCH 1B MURPHY SISTERS (FRIO 3600) WELDER EXPLORATION & PROD., INC. 225504 O'BRIEN-HARKINS 1 REFUGIO-FOX (5000) CUMMINS & WALKER OIL CO., INC. 197271 O'BRIEN-HARKINS 2 REFUGIO-FOX (1600) CUMMINS & WALKER OIL CO., INC. 222635 O'BRIEN, HARKINS "B" 17 BLANCONIA, N. (SINTON 4050) CHARRO OPERATING, L.L.C. 181635 O'BRIEN, J J 2 REFUGIO OLD (4800) EMERALD OIL & GAS LC 247288 O'BRIEN, J. B. "B" 4 I GRETA (O-1) DEWBRE PETROLEUM CORPORATION 144527 O'BRIEN, J. J. 6 GRETA (L-10) ACOCK/ANAQUA OPERATING CO., LP 177556 O'BRIEN, J. J. C 4 GRETA (5800) ACOCK/ANAQUA OPERATING CO., LP 190694 O'BRIEN, J. J. A 2 GRETA (L- 3) ACOCK/ANAQUA OPERATING CO., LP 147922


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ O'BRIEN, J. J. A 6 GRETA (L- 6 WEST) ACOCK/ANAQUA OPERATING CO., LP 156924 O'BRIEN, J. J. A 9 GRETA (F-1 WEST) ACOCK/ANAQUA OPERATING CO., LP 196518 O'BRIEN, J. J. A (S) 7 GRETA (O-1) ACOCK/ANAQUA OPERATING CO., LP 144838 O'BRIEN, J. J. A(S) 6 GRETA (L- 8) ACOCK/ANAQUA OPERATING CO., LP 159371 O'BRIEN, J. J. C (P) 2 GRETA (L- 5) ACOCK/ANAQUA OPERATING CO., LP 137754 O'BRIEN, J. M. 1 BLANCONIA (3700) C & E OPERATING, INC. 160772 O'BRIEN, J. M. D 6 GRETA (O-3) ACOCK/ANAQUA OPERATING CO., LP 193265 O'BRIEN, J. M. -A- 3 GRETA (C-1) ACOCK/ANAQUA OPERATING CO., LP 175300 O'BRIEN, J. M. 'A' 10 GRETA (L- 7 SOUTH) DEWBRE PETROLEUM CORPORATION 171612 O'BRIEN, J. M. 'A' G 3 GRETA (C-5) DEWBRE PETROLEUM CORPORATION 175296 O'BRIEN, J. M. 'B' 2 GRETA (C-5) DEWBRE PETROLEUM CORPORATION 161080 O'BRIEN, J. M. "B" 214 GRETA, DEEP (5360) ACOCK/ANAQUA OPERATING CO., LP 192311 O'BRIEN, J. M. "D & E" (P) 1 GRETA (L-15) ACOCK/ANAQUA OPERATING CO., LP 137031 O'BRIEN, J. M. "E" 6 GRETA, W. (6300) ACOCK/ANAQUA OPERATING CO., LP 231786 O'BRIEN, J. M. BP (AM) 1 GRETA (1250) ACOCK/ANAQUA OPERATING CO., LP 183223 O'BRIEN, J. M. C 7 GRETA (L- 5) ACOCK/ANAQUA OPERATING CO., LP 157868 O'BRIEN, J.J. 202 REFUGIO OLD (2960) EMERALD OIL & GAS LC 202079 O'BRIEN, J.J. A 1 REFUGIO OLD EMERALD OIL & GAS LC 135473 O'BRIEN, J.J. "B" 2 GRETA (2460) ACOCK/ANAQUA OPERATING CO., LP 137761 O'BRIEN, J.J. A (S) 8 GRETA (L- 9) ACOCK/ANAQUA OPERATING CO., LP 157058 O'BRIEN, J.J. B 1 GRETA (L- 5) ACOCK/ANAQUA OPERATING CO., LP 150108 O'BRIEN, J.M. 32 GRETA (O-4) ACOCK/ANAQUA OPERATING CO., LP 127172 O'BRIEN, J.M. 109 GRETA (L-12) ACOCK/ANAQUA OPERATING CO., LP 254909 O'BRIEN, J.M. 312A GRETA (C-2) ACOCK/ANAQUA OPERATING CO., LP 256500 O'BRIEN, J.M. -A- 6 C GRETA (O-1) ACOCK/ANAQUA OPERATING CO., LP 101469 O'BRIEN, J.M. -A- 6 T GRETA (O-2 NORTH) ACOCK/ANAQUA OPERATING CO., LP 101491 O'BRIEN, J.M. -C- 6 GRETA, DEEP (5660, SEG. N) ACOCK/ANAQUA OPERATING CO., LP 132252 O'BRIEN, J.M. A 7 GRETA (O-3) ACOCK/ANAQUA OPERATING CO., LP 147933 O'BRIEN, J.M. A-2 2 GRETA (L- 2) ACOCK/ANAQUA OPERATING CO., LP 141804 O'BRIEN, J.M. B 6-T GRETA (O-3) ACOCK/ANAQUA OPERATING CO., LP 154152 O'BRIEN, J.M. B 9 GRETA (L- 3) ACOCK/ANAQUA OPERATING CO., LP 143110 O'BRIEN, J.M. C 1 GRETA (L- 5) ACOCK/ANAQUA OPERATING CO., LP 141944 O'BRIEN, J.M. D 2 GRETA (O-5) ACOCK/ANAQUA OPERATING CO., LP 147384 O'BRIEN, J.M. D&E "D" 3 GRETA (L- 6 WEST) ACOCK/ANAQUA OPERATING CO., LP 141066 O'BRIEN, J.M. D&E "E" 1 GRETA (L-15) ACOCK/ANAQUA OPERATING CO., LP 155985 O'BRIEN, J.M. J&L "L" 1 GRETA (L- 5) ACOCK/ANAQUA OPERATING CO., LP 141695 O'CONNER-MILLER 3 BRIGHT FALCON (YEGUA 10,300) ALTA MESA SERVICES, LP 272693 O'CONNER, THOMAS 1 GRETA (L- 5) ACOCK/ANAQUA OPERATING CO., LP 135280 O'CONNOR 1 VIDAURI, WEST (4800) CHARRO OPERATING, L.L.C. 167049 O'CONNOR 3-C JOHNSTONE (MIDDLE FRIO) CHARRO OPERATING, L.L.C. 181516 O'CONNOR 14 HUFF (5500) T-C OIL COMPANY, LLC 212404 O'CONNOR 35D HUFF (2400) T-C OIL COMPANY, LLC 152158 O'CONNOR 52 HUFF (3600) T-C OIL COMPANY, LLC 239247 O'CONNOR 56 HUFF (2400) T-C OIL COMPANY, LLC 239248 O'CONNOR 60 HUFF (2800) T-C OIL COMPANY, LLC 214396 O'CONNOR 60 T-C (5600) T-C OIL COMPANY, LLC 160794 O'CONNOR 64 HUFF (4400) T-C OIL COMPANY, LLC 165388 O'CONNOR 65 HUFF ( 403) T-C OIL COMPANY, LLC 143839 O'CONNOR 69 HUFF (5250) T-C OIL COMPANY, LLC 258061 O'CONNOR 74 HUFF ( 403) T-C OIL COMPANY, LLC 214301 O'CONNOR 76X HUFF (2200) T-C OIL COMPANY, LLC 230793


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ O'CONNOR 78 HUFF (2800) T-C OIL COMPANY, LLC 210746 O'CONNOR -D- D 26 LAKE PASTURE (L-200) T-C OIL COMPANY, LLC 261101 O'CONNOR -D- D 37 LAKE PASTURE (E-244) T-C OIL COMPANY, LLC 255431 O'CONNOR -E- E 8 HUFF (2400) T-C OIL COMPANY, LLC 261988 O'CONNOR -H- 21 HUFF ( 199) T-C OIL COMPANY, LLC 179355 O'CONNOR -H- H 23 HUFF (2200) T-C OIL COMPANY, LLC 206967 O'CONNOR -H- H 27 HUFF (1400) T-C OIL COMPANY, LLC 184385 O'CONNOR -H- H 34 HUFF (2800) T-C OIL COMPANY, LLC 257660 O'CONNOR "H" H 16 HUFF (384 SAND) T-C OIL COMPANY, LLC 145098 O'CONNOR "H" H 17 HUFF (3000) T-C OIL COMPANY, LLC 170750 O'CONNOR "H" H 19 HUFF (2600) T-C OIL COMPANY, LLC 170270 O'CONNOR "H" H 21-L HUFF (3700) T-C OIL COMPANY, LLC 143832 O'CONNOR "H" H 21-U HUFF (2900) T-C OIL COMPANY, LLC 143835 O'CONNOR "H" H 26 HUFF (2200) T-C OIL COMPANY, LLC 140241 O'CONNOR "H" H 28 MCFADDIN (3900) T-C OIL COMPANY, LLC 149137 O'CONNOR RANCH 1 OCONNOR RANCH (FRIO CONS.) MILAGRO EXPLORATION, LLC 208141 O'CONNOR RANCH 14 OCONNOR RANCH (FRIO CONS.) MILAGRO EXPLORATION, LLC 212468 O'CONNOR RANCH 15 OCONNOR RANCH (FRIO CONS.) MILAGRO EXPLORATION, LLC 212439 O'CONNOR RANCH 16 OCONNOR RANCH, S. (VICKSBURG) MILAGRO EXPLORATION, LLC 237221 O'CONNOR RANCH 22 OCONNOR RANCH (FRIO CONS.) MILAGRO EXPLORATION, LLC 250444 O'CONNOR RANCH 23 OCONNOR RANCH, S. (VICKSBURG) MILAGRO EXPLORATION, LLC 219796 O'CONNOR RANCH 27 OCONNOR RANCH (FRIO CONS.) MILAGRO EXPLORATION, LLC 214373 O'CONNOR RANCH 28 OCONNOR RANCH (FRIO CONS.) MILAGRO EXPLORATION, LLC 216256 O'CONNOR RANCH 35 OLD BUZZARD (WILCOX) MILAGRO EXPLORATION, LLC 238785 O'CONNOR RANCH 37 AUSTIN, W. (UPPER WILCOX B) MILAGRO EXPLORATION, LLC 241858 O'CONNOR RANCH 38 OLD BUZZARD (WILCOX) MILAGRO EXPLORATION, LLC 232108 O'CONNOR RANCH 41 OLD BUZZARD (WILCOX) MILAGRO EXPLORATION, LLC 232105 O'CONNOR RANCH "A" 1-L OCONNOR RANCH, S. (VICKSBURG) MILAGRO EXPLORATION, LLC 177564 O'CONNOR RANCH "A" 1-U OCONNOR RANCH, S. (FRIO 1) MILAGRO EXPLORATION, LLC 177560 O'CONNOR RANCH "B" 1 OCONNOR RANCH (FRIO CONS.) MILAGRO EXPLORATION, LLC 180382 O'CONNOR RANCH "B" 2 OCONNOR RANCH (FRIO CONS.) MILAGRO EXPLORATION, LLC 180241 O'CONNOR RANCH "B" 5 OCONNOR RANCH (FRIO CONS.) MILAGRO EXPLORATION, LLC 181495 O'CONNOR RANCH "C" 2 OCONNOR RANCH, S. (VICKSBURG) MILAGRO EXPLORATION, LLC 186988 O'CONNOR RANCH "R" 3 OCONNOR RANCH (FRIO CONS.) MILAGRO EXPLORATION, LLC 180882 O'CONNOR RANCH "T" 1 OCONNOR RANCH (FRIO CONS.) MILAGRO EXPLORATION, LLC 180921 O'CONNOR-HEWITT A 2 CRAIN (3300) ALTA MESA SERVICES, LP 231114 O'CONNOR-MILLER 1 EL TORO MAX (AY-3) ALTA MESA SERVICES, LP 165213 O'CONNOR-MILLER 3 EL TORO MAX (AY-3) ALTA MESA SERVICES, LP 169316 O'CONNOR, DENNIS ET AL -D- 7 TERRELL POINT (2800) T-C OIL COMPANY, LLC 179819 O'CONNOR, DENNIS ET AL -L- L 15 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 220087 O'CONNOR, DENNIS ET AL -L- L 25 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 223481 O'CONNOR, DENNIS ET AL -L- L 32 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 198753 O'CONNOR, DENNIS ET AL -L- L 38 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 225270 O'CONNOR, DENNIS ET AL -L- L 56 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 221948 O'CONNOR, DENNIS ET AL -L- L 59 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 225472 O'CONNOR, DENNIS ET AL -L- L 75 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 221943 O'CONNOR, DENNIS ET AL -L- L 87 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 227410 O'CONNOR, DENNIS ET AL -N- N 13 HUFF (3250) T-C OIL COMPANY, LLC 200149 O'CONNOR, DENNIS ET AL -N- N 14 HUFF (3400) T-C OIL COMPANY, LLC 197260 O'CONNOR, DENNIS ET AL "CEFI" 4 LAKE PASTURE (L-200) T-C OIL COMPANY, LLC 066429 O'CONNOR, DENNIS ET AL "D" D 6 TERRELL POINT (3600) T-C OIL COMPANY, LLC 097113


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ O'CONNOR, DENNIS ETAL "L" 25 LAKE PASTURE (H-484) T-C OIL COMPANY, LLC 134535 O'CONNOR, L. W. 2 MARY ELLEN OCONNOR (H- 50) EMERALD OIL & GAS LC 156615 O'CONNOR, LAWRENCE W. 5 MARY ELLEN OCONNOR (FS-1) EMERALD OIL & GAS LC 263094 O'CONNOR, M. V. ESTATE "C" 6 TRAIN WRECK (6000 SD.) CHARRO OPERATING, L.L.C. 224771 O'CONNOR, M.E. 6 C WOODSBORO (3250) CORE E & P CORP. 119778 O'CONNOR, MARY ELLEN B 8 MARY ELLEN OCONNOR (FT-18 SAND) EMERALD OIL & GAS LC 158450 O'CONNOR, MARY ELLEN E 4 MARY ELLEN OCONNOR (4175) EMERALD OIL & GAS LC 186393 O'CONNOR, T-C OIL CO. 79 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 206761 O'CONNOR, THOMAS (AMOCO) 2 GRETA (5270) ACOCK/ANAQUA OPERATING CO., LP 205584 O'CONNOR, THOMAS 'A' 13 TOM O'CONNOR (4925) HILCORP ENERGY COMPANY 180991 O'CONNOR, THOMAS 'A' 19 TOM OCONNOR (5300, EAST) HILCORP ENERGY COMPANY 188900 O'CONNOR, THOMAS 'A' 113 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 161310 O'CONNOR, THOMAS 'B' 13 MARY ELLEN OCONNOR (FT-5) HILCORP ENERGY COMPANY 179411 O'CONNOR, THOMAS 'B' 17 MARY ELLEN OCONNOR (H- 50) HILCORP ENERGY COMPANY 166958 O'CONNOR, THOMAS 'B' 44D MARY ELLEN OCONNOR (H-117) HILCORP ENERGY COMPANY 175309 O'CONNOR, THOMAS 'C' 10 TOM OCONNOR (5450 SAND) HILCORP ENERGY COMPANY 179384 O'CONNOR, THOMAS 'C' 11 TOM O'CONNOR (5410) HILCORP ENERGY COMPANY 180778 O'CONNOR, THOMAS 'C' 40 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 166198 O'CONNOR, THOMAS 'C' 58 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 176352 O'CONNOR, THOMAS 'C' 60 GRETA (L-15) HILCORP ENERGY COMPANY 161263 O'CONNOR, THOMAS 'C' 92 TOM OCONNOR (5450 SAND) HILCORP ENERGY COMPANY 270822 O'CONNOR, THOMAS "A" 24 TOM OCONNOR (5300, EAST) HILCORP ENERGY COMPANY 192125 O'CONNOR, THOMAS "A" 32 TOM OCONNOR (5400 SAND) HILCORP ENERGY COMPANY 187875 O'CONNOR, THOMAS "A" 34 TOM O'CONNOR (4830) HILCORP ENERGY COMPANY 157803 O'CONNOR, THOMAS "A" 42 TOM O'CONNOR (4840) HILCORP ENERGY COMPANY 223466 O'CONNOR, THOMAS "A" 43 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 183195 O'CONNOR, THOMAS "A" 45 TOM OCONNOR (5400 SAND) HILCORP ENERGY COMPANY 139323 O'CONNOR, THOMAS "A" 47 TOM OCONNOR (5425 SAND) HILCORP ENERGY COMPANY 142081 O'CONNOR, THOMAS "A" 65 TOM OCONNOR (5400 SAND) HILCORP ENERGY COMPANY 269860 O'CONNOR, THOMAS "A" 74 TOM O'CONNOR (4925) HILCORP ENERGY COMPANY 143490 O'CONNOR, THOMAS "A" 82 TOM OCONNOR HILCORP ENERGY COMPANY 158867 O'CONNOR, THOMAS "A" 92 TOM O'CONNOR(4900) HILCORP ENERGY COMPANY 137686 O'CONNOR, THOMAS "B" 11 MARY ELLEN OCONNOR (FQ-40 SAND) HILCORP ENERGY COMPANY 145243 O'CONNOR, THOMAS "B" 16 MARY ELLEN OCONNOR (H-117) HILCORP ENERGY COMPANY 146764 O'CONNOR, THOMAS "B" 24 MARY ELLEN OCONNOR (H-117) HILCORP ENERGY COMPANY 147288 O'CONNOR, THOMAS "B" 35 MARY ELLEN OCONNOR (FQ-40 SAND) HILCORP ENERGY COMPANY 228252 O'CONNOR, THOMAS "C" 4G TOM OCONNOR (4200) HILCORP ENERGY COMPANY 267316 O'CONNOR, THOMAS "C" 5G TOM O'CONNOR (3400) HILCORP ENERGY COMPANY 229080 O'CONNOR, THOMAS "C" 6G TOM OCONNOR HILCORP ENERGY COMPANY 229789 O'CONNOR, THOMAS "C" 6G TOM OCONNOR (5300, EAST) HILCORP ENERGY COMPANY 182617 O'CONNOR, THOMAS "C" 13 TOM OCONNOR (5100, EAST) HILCORP ENERGY COMPANY 194119 O'CONNOR, THOMAS "C" 19 GRETA (L-10) HILCORP ENERGY COMPANY 234338 O'CONNOR, THOMAS "C" 42-L TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 188439 O'CONNOR, THOMAS "C" 42-U TOM OCONNOR (4200) HILCORP ENERGY COMPANY 188183 O'CONNOR, THOMAS "C" 51 TOM O'CONNOR (4925) HILCORP ENERGY COMPANY 223041 O'CONNOR, THOMAS "C" 68 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 219427 O'CONNOR, THOMAS "D" 9 TOM OCONNOR (4950) HILCORP ENERGY COMPANY 198788 O'CONNOR, TOM 2 GRETA (L- 2) ACOCK/ANAQUA OPERATING CO., LP 144641 O'CONNOR, TOM 4 GRETA (O-6) ACOCK/ANAQUA OPERATING CO., LP 147792 O'CONNOR, TOM 11 GRETA (L- 3) ACOCK/ANAQUA OPERATING CO., LP 149039 O'CONNOR, TOM 13 GRETA (O-7) ACOCK/ANAQUA OPERATING CO., LP 147972


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ O'CONNOR, TOM (5800 SD) FLD UNIT J102 TOM OCONNOR (5800) HILCORP ENERGY COMPANY 107705 O'DANIEL KLIMITCHEK 1 EZZELL, S. (FRIO 2800) ACT OPERATING, INC. 172077 O'NEAL GAS UNIT 3 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 142061 O'NEAL GAS UNIT 4 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 162214 O'NEAL GAS UNIT 5 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 180567 O'NEAL GAS UNIT 6 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 184041 O'NEAL GAS UNIT 7 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 185262 O'NEAL GAS UNIT 8 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 198032 O'NEAL GAS UNIT 9 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 207950 O'NEAL GAS UNIT 11 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 221106 O'NEAL GAS UNIT 12 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 227348 O'NEAL GAS UNIT 13 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 232512 O'NEAL GAS UNIT 14 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 236912 OAKVILLE-HINTON G.U. 1 OAKVILLE (WILCOX CONS.) WELDER EXPLORATION & PROD., INC. 247162 OBRIEN J. M. -B- 12 C GRETA (700) ACOCK/ANAQUA OPERATING CO., LP 086196 OBRIEN, J. J. 201 REFUGIO OLD EMERALD OIL & GAS LC 225547 OBRIEN, J. J. -B- 1 B BLANCONIA (4700) JTB OIL COMPANY, INC. 033086 OBRIEN, J. J. -B- 3 GRETA (L- 8) ACOCK/ANAQUA OPERATING CO., LP 055319 OBRIEN, J. M. 61 GRETA (C-5) ACOCK/ANAQUA OPERATING CO., LP 101793 OBRIEN, J. M. 302 GRETA (O-4) ACOCK/ANAQUA OPERATING CO., LP 118851 OBRIEN, J. M. 308 GRETA (O-4) ACOCK/ANAQUA OPERATING CO., LP 116281 OBRIEN, J. M. -A- 5 C GRETA (O-7) ACOCK/ANAQUA OPERATING CO., LP 048272 OBRIEN, J. M. -A- 5 T GRETA (C-1) ACOCK/ANAQUA OPERATING CO., LP 048271 OBRIEN, J. M. -A- 8 C GRETA (900) ACOCK/ANAQUA OPERATING CO., LP 085208 OBRIEN, J. M. -A- 8 T GRETA (1250) ACOCK/ANAQUA OPERATING CO., LP 085256 OBRIEN, J. M. -A- A 11 GRETA (F-1 WEST) DEWBRE PETROLEUM CORPORATION 001919 OBRIEN, J. M. -B- 4 E GRETA (O-4) DEWBRE PETROLEUM CORPORATION 055578 OBRIEN, J. M. -B- 5 C GRETA (900) DEWBRE PETROLEUM CORPORATION 082794 OBRIEN, J. M. -B- 5 T GRETA (1250) DEWBRE PETROLEUM CORPORATION 082795 OBRIEN, J. M. -B- 7 GRETA (L- 5) ACOCK/ANAQUA OPERATING CO., LP 053585 OBRIEN, J. M. -B- 11 C GRETA (900) ACOCK/ANAQUA OPERATING CO., LP 099595 OBRIEN, J. M. -B- 11 T GRETA (1300) ACOCK/ANAQUA OPERATING CO., LP 085106 OBRIEN, J. M. -B- 12 T GRETA (800) ACOCK/ANAQUA OPERATING CO., LP 086197 OBRIEN, J. M. -B- 202 GRETA (C-5) ACOCK/ANAQUA OPERATING CO., LP 108307 OBRIEN, J. M. -B- B 4 G GRETA (C-1) DEWBRE PETROLEUM CORPORATION 074461 OBRIEN, J. M. -D- 3 D GRETA (L- 3) ACOCK/ANAQUA OPERATING CO., LP 052765 OBRIEN, J. M. -D- 3 H GRETA (L- 5) ACOCK/ANAQUA OPERATING CO., LP 052766 OBRIEN, J. M. D & E 5 GRETA, DEEP (5600) ACOCK/ANAQUA OPERATING CO., LP 106112 OBRIEN, J. M. D & E E 3 D GRETA (L- 5) ACOCK/ANAQUA OPERATING CO., LP 053584 OBRIEN, J. M., D & E E 3 F GRETA (L- 3) ACOCK/ANAQUA OPERATING CO., LP 049777 OBRIEN, J. M., D & E E 3 H GRETA (L-15) ACOCK/ANAQUA OPERATING CO., LP 038088 OBRIEN, J.M. 52 GRETA (L- 4) ACOCK/ANAQUA OPERATING CO., LP 127502 OBRIEN, J.M. -H- 3 GRETA (L- 8) ACOCK/ANAQUA OPERATING CO., LP 132945 OBRIEN,J.M.-B-(GAS PROD.AREA-B-) 6 C GRETA (L-13) ACOCK/ANAQUA OPERATING CO., LP 074593 OCONNOR 57 MCFADDIN (2500) T-C OIL COMPANY, LLC 100918 OCONNOR 58 HUFF ( 403) T-C OIL COMPANY, LLC 124700 OCONNOR 61 MCFADDIN (5250) T-C OIL COMPANY, LLC 119997 OCONNOR -H- H 5 HUFF (4400) T-C OIL COMPANY, LLC 068268 OCONNOR, DENNIS ET AL -D- D 7 TERRELL POINT (CATAHOULA) T-C OIL COMPANY, LLC 045179 OCONNOR, DENNIS ET AL -L- L 33 LAKE PASTURE (M-295) T-C OIL COMPANY, LLC 058160 OCONNOR, L. W. 4 MARY ELLEN OCONNOR (FS-1) EMERALD OIL & GAS LC 002990


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ OCONNOR, L. W. 5 C MARY ELLEN OCONNOR (D-1) EMERALD OIL & GAS LC 002977 OCONNOR, M. E. 6 T WOODSBORO (3500) CORE E & P CORP. 083329 OCONNOR, M. E. 21 MARY ELLEN OCONNOR (FS-1) DOLPHIN PETROLEUM, LP 045119 OCONNOR, MARY ELLEN 28 U MARY ELLEN OCONNOR (FQ-25) DOLPHIN PETROLEUM, LP 049774 OCONNOR, MARY ELLEN 32 MARY ELLEN OCONNOR (D-1) DOLPHIN PETROLEUM, LP 079074 OCONNOR, MARY ELLEN 53 MARY ELLEN OCONNOR (5000) DOLPHIN PETROLEUM, LP 130673 OCONNOR, THOMAS -A- 112 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 116554 OCONNOR, TOM 5 GRETA (F-2 WEST) ACOCK/ANAQUA OPERATING CO., LP 001924 ODAM 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 221544 OEHLKE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 265235 OELSCHLEGEL GU 1 TYNAN (FRIO 3700, LO.) FAUCETTE, E. W. 083970 OETKEN 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266477 OHRT-ALBRECHT 1 MISSION VALLEY (10,220) UNION GAS OPERATING COMPANY 181425 OHRT-HEINOLD 1 MISSION VALLEY (10,220) UNION GAS OPERATING COMPANY 180862 OLIVER A 1 DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 258092 OLIVER D 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264536 OLIVIA PARDO 1 BATTLE (4030) PETRODOME OPERATING, LLC 271330 OLSON-BAKER UNIT 1 SUGARKANE (AUSTIN CHALK) BURLINGTON RESOURCES O & G CO LP 250483 OLSON-BAKER UNIT 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 269840 OLSON-BAKER UNIT 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271130 OLSON-ESSE UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 266116 OLSSE-ESSE UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 269502 ONEAL GAS UNIT 1 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 003545 ONEAL GAS UNIT 2 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 063496 OPAL WILSON ET AL UNIT 1 KITTIE WEST (PETTUS "C") PROGAS PROPERTIES, INC. 135801 OPIELA 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 270647 OREILLY, ELLA A 1 PAPALOTE (4600) WESTERN OIL FIELDS, INC. 003519 ORMAND A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 263749 ORO NEGRO UNIT 2 1 DE WITT (EAGLE FORD SHALE) GEOSOUTHERN ENERGY CORPORATION 265524 ORR 1 SLIVA (2100) WELDER EXPLORATION & PROD., INC. 272901 OVERBY 2E PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 237660 OVERBY, CHARLIE C. 1E PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 166124 OVERPASS 1 EL TORO MAX (AY-3) SUE-ANN OPERATING, L.C. 205594 OWENS UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 263546 P CRAIN UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268806 P. CRAIN UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266287 P. FRISBIE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266782 P. FRISBIE B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 265671 PAGAN 1 MIKESKA, NW. (7800) MILAGRO EXPLORATION, LLC 238783 PAGAN, JOHN S. 1 MIKESKA (WILCOX) ROYKO OIL COMPANY 146363 PAGE 1 COSDEN, WEST (VICKSBURG, UPPER) WELDER EXPLORATION & PROD., INC. 264407 PAGE -B- 5 COSDEN, WEST (VICKSBURG, UPPER) DIRKS BROTHERS 001419 PAGE ESTATE B 3 COSDEN, WEST (VICKSBURG, UPPER) DIRKS BROTHERS 001420 PAGE UNIT #2 1 COSDEN (Z-12) WELDER EXPLORATION & PROD., INC. 105733 PAGE/MINERAL UNIT 5 MINERAL (MASSIVE) RINCON PETROLEUM CORPORATION 126926 PAGE, C. E. 13 COSDEN, W. (HOCKLEY LOWER) RR VENTURES LIMITED PARTNERSHIP 118289 PAGE, GLADYS 1 COSDEN (Z-12) WELDER EXPLORATION & PROD., INC. 099255 PAGEL, C. C. 1 WILDCAT CORENERGY OPERATING GROUP, LLC 177187 PALRANG, D. A. GAS UNIT 1 WORD (EDWARDS) CAPITAL STAR OIL & GAS, INC. 086431 PALRANG, D. A. GAS UNIT 2 WORD (EDWARDS) CAPITAL STAR OIL & GAS, INC. 105749 PALRANG, D. A. GAS UNIT 3 WORD (EDWARDS) CAPITAL STAR OIL & GAS, INC. 169137


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ PALRANG, D. A. GAS UNIT 4 WORD (EDWARDS) CAPITAL STAR OIL & GAS, INC. 173087 PANCHO UNIT 1 HELEN GOHLKE (MIOCENE 1450) FIVE-JAB, INC. 257081 PANTEL "A" G.U. 1 EBEN HABEN (3280) DURANGO RESOURCES CORP. 171546 PANTEL "B" G.U. 2 STAPP (FRIO -B-) DURANGO RESOURCES CORP. 170665 PANTEL "B" G.U. 3 EBEN HABEN (2400) DURANGO RESOURCES CORP. 170990 PANTEL, NELSON 1 WEBER, S. (1170) HOCHHEIM ENTERPRISES INC. 129974 PARGMANN 1 HIGHLANDER (CARRIZO) BAY ROCK OPERATING COMPANY 192052 PARKER 2 JACKSON RANCH (YEGUA 5400) VAQUERO OPERATING 167419 PARKER FRISBIE 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 266455 PARKER, EMILY H. 1 L DINERO, W. (5600) CBN OPERATING CORP. 082790 PARKER, EMILY H. 1 U DINERO, W. (4300) CBN OPERATING CORP. 082789 PARKS 2 FANNIN, SOUTH (TOBY) A & R RESOURCES 151587 PARMA 1 FIFTEEN MILE CREEK (WILCOX) MILAGRO EXPLORATION, LLC 235537 PARMA 2 FIFTEEN MILE CREEK (WILCOX) MILAGRO EXPLORATION, LLC 241972 PATINO UNIT 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 265042 PATINO UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 259794 PATMAN 1 MAURITZ, WEST (6550) SANCHEZ OIL & GAS CORPORATION 249326 PATRICK HUGH BURNS 1 CLAY WEST (WILCOX 10400) JAMEX, INC. 254984 PATTESON ESTATE 3 WILDCAT MAGNUM PRODUCING, LP 213445 PATTESON RANCH 1 PATTESON RANCH (MACKHANK) MAGNUM PRODUCING, LP 098372 PATTON 1 HERNDON (3200 FRIO) VENTEX OPERATING CORP. 229837 PATTON 2 SAINT ARMO (MACKHANK) VENTEX OPERATING CORP. 228250 PATTON UNIT 3 SAINT ARMO (WILCOX, LOWER STEVE) VENTEX OPERATING CORP. 258747 PAVLISKA 1 CAMPBELL CREEK (8450) MASCOT OIL COMPANY 126368 PAWALEK, M. M. 1 YOUGEEN, S. (FRIO 3650) OMEGA ENERGY, LLC 113313 PAWELEK, BEN 4 PERSON (EDWARDS) BLACKBRUSH O & G, LLC 127124 PAWELEK, BEN A. 2 PERSON (EDWARDS) BLACKBRUSH O & G, LLC 052994 PAWLIK GODFREY GAS UNIT #2 3 HOUDMAN (WILCOX 8300) KEBO OIL & GAS, INC. 229452 PAWLIK GODFREY GAS UNIT NO. 2 4 HOUDMAN (WILCOX 8300) KEBO OIL & GAS, INC. 245424 PAWLIK GODFREY GAS UNIT NO. 2 5 HOUDMAN (WILCOX 8300) KEBO OIL & GAS, INC. 249409 PAWLIK GODFREY GAS UNIT NO. 2 6 HOUDMAN (WILCOX 8300) KEBO OIL & GAS, INC. 257927 PAWLIK GU 1 2 FANT (WILCOX 10000) LRE OPERATING, LLC 177635 PAWLIK GU 1 2 FANT, S. (WILCOX 10760) LRE OPERATING, LLC 098582 PAWLIK GU 1 3 FANT (WILCOX 10000) SHERIDAN PRODUCTION COMPANY, LLC 223259 PAWLIK GU1 3 FANT, S. (WILCOX 11300) LRE OPERATING, LLC 176660 PAWLIK-GODFREY GU 1 MAXINE, EAST (8700) FAULCONER, VERNON E., INC. 151516 PEARCE 1 HOPE (WILCOX MASSIVE) BROWN, GEO. R PARTNERSHIP,LP,THE 224620 PEDERNALES 1 COTTONWOOD CREEK,E. (MIDDLE WX.) CB ENERGY, LLC 193766 PEDERNALES UNIT 3 COTTONWOOD CREEK,E. (MIDDLE WX.) CB ENERGY, LLC 193769 PEDRAZA 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268513 PEEBLES 1 GEORGE WEST, WEST (10430) OXY USA INC. 200556 PEEBLES A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267089 PEEBLES A 3H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 269014 PEREIRA 2 DIAL (HOCKLEY 3380) OFFSPRING WELL SALVAGE 104466 PEREIRA, F. R. 4 HORDES CREEK (LULING) PEGASUS PETROLEUM CORPORATION 043221 PEREZ 1 COLETTO CREEK, SOUTH (3000) AMPAK OIL COMPANY 213341 PEREZ 2 COLOGNE (1050) AMPAK OIL COMPANY 175418 PEREZ, FELIPE 2 HOCKLEY (3535) REPUBLIC RESOURCES, LLC. 184232 PERIERA 1 HORDES CREEK, SOUTH (1950) DOUBLE PLAY OIL & GAS, INC 256285 PERRYMAN 1 BLANCO CREEK (6400) PAPALOTE CORP. 000857 PERSON, OTHA D. 1 PERSON (EDWARDS) BLACKBRUSH O & G, LLC 216677


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ PERSON, OTHA D. 5 PERSON (EDWARDS) BLACKBRUSH O & G, LLC 196963 PERSON, OTHA D. 8 PERSON (EDWARDS) BLACKBRUSH O & G, LLC 216675 PETERS "A" 3 MILLER (5700) VT VISTATEX ENERGY LLC 107491 PETERS COLE 1 EL TORO MAX (AY-3) ALTA MESA SERVICES, LP 268204 PETERS/SKLAR 1 EL TORO MAX (AY-3) ALTA MESA SERVICES, LP 169129 PETERSON 1 ALDRETE AND CARBAJAL (WILCOX) HILCORP ENERGY COMPANY 200077 PETERSON 1 COSDEN (Z-12) HUGHES, DAN A. COMPANY, L.P. 240418 PETERSON 1 GARDEN (MIDDLE WILCOX) HUGHES, DAN A. COMPANY, L.P. 226243 PETERSON 2 ALDRETE AND CARBAJAL (WILCOX) HILCORP ENERGY COMPANY 229958 PETERSON UNIT 2 WORD, N. (7600) TRIO CONSULTING & MANAGEMENT,LLC 263361 PETTER A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267037 PETTUS 51 CABEZA CREEK (8060) NOG PRODUCTION & OPERATING LLC 192182 PETTUS 55 CABEZA CREEK (PETTUS) NOG PRODUCTION & OPERATING LLC 153911 PETTUS HEIRS 3 RIVERDALE (MASSIVE FIRST-WILCOX) MAGNUM PRODUCING, LP 184558 PETTUS HEIRS 5 MUY BUENO (9800) MAGNUM PRODUCING, LP 198005 PETTUS UNIT 12 CABEZA CREEK (YEGUA) NOG PRODUCTION & OPERATING LLC 076496 PETTUS UNIT 13 CABEZA CREEK (REKLAW, LO.) NOG PRODUCTION & OPERATING LLC 001075 PETTUS UNIT 21 CABEZA CREEK (YEGUA) NOG PRODUCTION & OPERATING LLC 077405 PETTUS UNIT 22 CABEZA CREEK (COOK MTN.) NOG PRODUCTION & OPERATING LLC 071798 PETTUS UNIT 27 CABEZA CREEK (REKLAW) NOG PRODUCTION & OPERATING LLC 190660 PETTUS UNIT 32 CABEZA CREEK (REKLAW) NOG PRODUCTION & OPERATING LLC 190661 PETTUS UNIT 39 CABEZA CREEK (WILCOX MACKANK) NOG PRODUCTION & OPERATING LLC 142482 PETTUS UNIT 42 CABEZA CREEK (COOK MTN., W) NOG PRODUCTION & OPERATING LLC 074258 PETTUS UNIT 44 CABEZA CREEK (PETTUS) NOG PRODUCTION & OPERATING LLC 220096 PETTUS UNIT 52 CABEZA CREEK (REKLAW) NOG PRODUCTION & OPERATING LLC 190450 PETTUS UNIT 54 CABEZA CREEK (REKLAW, LO.) NOG PRODUCTION & OPERATING LLC 149071 PETTUS UNIT 54 CABEZA CREEK (YEGUA) NOG PRODUCTION & OPERATING LLC 187979 PETTUS, R. M. ET AL 1 HORDES CREEK (WILCOX CONS.) MILAGRO EXPLORATION, LLC 237077 PETTUS, W. W. HEIRS 1 MUY BUENO (WILCOX J) MAGNUM PRODUCING, LP 172874 PETTUS, W. W. HEIRS 1 MUY BUENO (9800) MAGNUM PRODUCING, LP 180461 PFEIFER GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 265491 PHELPS 1 FANNIN (CATAHOULA) CORUM PRODUCTION COMPANY 230688 PHILLIP A. MCKINNEY GAS UNIT 1 MCKINNEY (WILCOX) MAGNUM PRODUCING, LP 253815 PHILLIPPE GU1 B 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 266852 PHILLIPS 1 MEYERSVILLE, E. (3220) ROBERTSON RESOURCES, INC. 145255 PHOENIX 1 YORKTOWN (WILCOX 10100) PHOENIX LEASE SERVICES, LLC 270957 PICKERING AND ROOS 42 PLACEDO (4000 CATAHOULA) PEGASUS OPERATING, INC. 167091 PICKETT GAS UNIT 1 1 SAN MARCOS (AUSTIN CHALK) PIONEER NATURAL RES. USA, INC. 259567 PIEGSA, P. 1 VICTORIA, DEEP (CATAHOULA) MONTEREY OIL COMPANY 004591 PILGREEN 2ST SPEAKS, SW. (WILCOX 9560) CRIMSON EXPLORATION OPER., INC. 192593 PILGREEN 3 SPEAKS, SW. (MAGNOLIA) CRIMSON EXPLORATION OPER., INC. 171218 PILGREEN 3 SPEAKS, SW (MIDDLE WILCOX-CONS.) CRIMSON EXPLORATION OPER., INC. 177125 PILGREEN 4R SPEAKS, SW. (RAINBOW) CRIMSON EXPLORATION OPER., INC. 164727 PILGREEN 5 SPEAKS, SW (MIDDLE WILCOX-CONS.) CRIMSON EXPLORATION OPER., INC. 174660 PILGREEN 6 SPEAKS, SW. (RAINBOW) CRIMSON EXPLORATION OPER., INC. 173023 PILGREEN 7 SPEAKS, SW. (MAGNOLIA) CRIMSON EXPLORATION OPER., INC. 176547 PILGREEN 8 SPEAKS, SW (MIDDLE WILCOX-CONS.) CRIMSON EXPLORATION OPER., INC. 199470 PILGREEN 9 SPEAKS, SW. (RAINBOW) CRIMSON EXPLORATION OPER., INC. 186752 PILGREEN 9 SPEAKS, SW. (SIMPSON) CRIMSON EXPLORATION OPER., INC. 181133 PILGREEN 11 SPEAKS, SW (MIDDLE WILCOX-CONS.) CRIMSON EXPLORATION OPER., INC. 182525 PILGREEN 13 SPEAKS, SW (MIDDLE WILCOX-CONS.) CRIMSON EXPLORATION OPER., INC. 191829


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ PILGREEN 14 SPEAKS, SW (MIDDLE WILCOX-CONS.) CRIMSON EXPLORATION OPER., INC. 179361 PILGREEN 15 SPEAKS, SW. (RAINBOW) CRIMSON EXPLORATION OPER., INC. 251964 PINSON SLAUGHTER UNIT 3 SPEARY (ROEDER 8800) STATOIL TEXAS ONSHORE PROP LLC 217968 PINSON SLAUGHTER UNIT 4 LYONS (4TH ROEDER) STATOIL TEXAS ONSHORE PROP LLC 214868 PITTMAN 1 WEESATCHE, SOUTH (FRIO 1200) COASTLINE EXPLORATION, INC. 209888 PITTMAN 1A WEESATCHE, SOUTH (WILCOX 9150) MIDSTATES CORPORATION 135289 PITTMAN 2 POWDER RIVER (CONSOLIDATED) COASTLINE EXPLORATION, INC. 244421 PITTMAN 3 GOLIAD, WEST (WILCOX) LIGHTNING OIL COMPANY 254336 PITTS 3 SPEAKS, S. (LOWER WILCOX) CANTERA OPERATING, LLC 198091 PLACEDO RANCH 1 PLACEDO (6400) ACOCK/ANAQUA OPERATING CO., LP 248810 PLACEDO RANCH 2 PLACEDO (5770) ACOCK/ANAQUA OPERATING CO., LP 253238 PLACEDO RANCH 5 PLACEDO (5880) ACOCK/ANAQUA OPERATING CO., LP 262399 PLACEDO RANCH 7 PLACEDO, EAST (5960) ACOCK/ANAQUA OPERATING CO., LP 269520 PLOEGER, LESLIE 1 BORCHERS DEEP (BUSHEL) XTO ENERGY INC. 178549 PLOMERO RANCH 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 256501 PLOMERO RANCH 3 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259018 PLOMERO RANCH 5 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268755 PLUMMER 1 MARSHALL (MIDDLE WILCOX) ETOCO, L.P. 221802 PMT UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 265354 POEHLER 3 POEHLER (COOK MT 5130) NELSON, JAMES L. 168386 POETTER 1 CHRISTMAS (12300) WINN EXPLORATION CO., INC. 247291 POGUE UNIT A G 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266273 POHL, O. A. 1 SPEAKS, SW. (FRIO) HORNE, RANSOM, JR. 061422 POHL,H. A. 2 WORD, N. (EDWARDS) WHITING OIL AND GAS CORPORATION 088965 POHLER A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268030 POKLUDA A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 261095 POLLOK, C. T. 3 PANNA MARIA (EDWARDS) BLACKBRUSH O & G, LLC 212975 POPE 1 HOPE (FRIO 2950) SUNCOAST TECHNICAL SERVICES INC 259672 PORCHE 3 BRIGHT FALCON (YEGUA 9600) MILAGRO EXPLORATION, LLC 177660 PORCHE, WILLIAM E., JR. 1 CARMICHAEL (4740) TECH-BRISCOE 1975 DRLING.PRO.LTD 066104 POST 1 BEGO (CONSOLIDATED) ENERGYQUEST II, LLC 187209 POST 2 BEGO (CONSOLIDATED) ENERGYQUEST II, LLC 200362 POST 3 BEGO (CONSOLIDATED) ENERGYQUEST II, LLC 205898 POST 4 BEGO (CONSOLIDATED) ENERGYQUEST II, LLC 209472 POSTEL 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267757 POTH UNIT 1H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 274460 POWDERHORN CO. 12 POWDERHORN, SE. (MIOCENE C) BEP OPERATING, LLC 045235 POWDERHORN RANCH 18 POWDERHORN (2) BEP OPERATING, LLC 141105 POWELL 1 HORDES CREEK (LULING) DASBEK ENERGY, L.L.C. 225088 POWELL 1 HORDES CREEK (YEGUA #3) DASBEK ENERGY, L.L.C. 268820 POWELL -A- 2 HORDES CREEK, SOUTH (PETTUS) DESANA DEVELOPMENT CORPORATION 126386 POWELL, GENTRY 1 MESCALERO (WILCOX J SAND) B.P. PRODUCTIONS INC. 234181 POWELL, GENTRY T. -A- 3 HORDES CREEK (4870) SUE-ANN OPERATING, L.C. 101605 POWELL, GENTRY T. SR. 2 HORDES CREEK, NORTH (SLICK) DESANA DEVELOPMENT CORPORATION 128643 POWER, PHIL 10 REFUGIO OLD (V-3) EMERALD OIL & GAS LC 037517 POWERS 3 REFUGIO OLD (5600) EMERALD OIL & GAS LC 003960 POWERS, JAMES 1 GANADO, WEST (5200) PREMIER NATURAL RESOURCES, LLC 155075 PRASEK 1 DOLAN (HOSTETTER) TIDEWATER MINERALS CORPORATION 186814 PRASEK 139 1 DOLAN (LULING SAND) TIDEWATER MINERALS CORPORATION 198382 PRASEK 139 2 DOLAN (HOSTETTER) TIDEWATER MINERALS CORPORATION 198955 PRASEK-DOLAN UNIT 1 1 DOLAN (LULING SAND) TIDEWATER MINERALS CORPORATION 200496


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ PREISS, ARLIS 2 FANNIN, NORTH (3180) IPR ENERGY PARTNERS, LLC 147627 PREISS, PRESTON ET AL 1 REICHERT (MIOCENE 1800) CORE E & P CORP. 123026 PRESSLEY, EDMONIA 12 CORDELE W. (4270 BECKY) CORDELE DEVELOPMENT CORPORATION 151370 PRESSLEY, EDMONIA ESTATE 1 CORDELE, SE. (3050 CATAHOULA) CORDELE DEVELOPMENT CORPORATION 001399 PRESSLY 1 B CORDELE, SE. (3050 CATAHOULA) CORDELE DEVELOPMENT CORPORATION 069693 PRESSLY, EDMONIA 14 CORDELE, EAST (2900) CORDELE DEVELOPMENT CORPORATION 234524 PRESSLY, EDMONIA 14 CORDELE W. (4270 BECKY) CORDELE DEVELOPMENT CORPORATION 226842 PRESTON PREISS ET AL 3 REICHERT (MIOCENE 1800) CORE E & P CORP. 145927 PREWETT, MARSHALL 1 YORKTOWN, SOUTH (WILCOX 9930) VIRTEX OPERATING COMPANY, INC. 125785 PREWITT 2 CONSOLIDATED (WILCOX 10500) KEBO OIL & GAS, INC. 177512 PREWITT 3A WEESATCHE, NE. (HOLT FB A) EVEREST RESOURCE COMPANY 205331 PREWITT, DONALD F. ET. UX. 1 WEESATCHE, SOUTH (WILCOX) EVEREST RESOURCE COMPANY 150036 PRIBYL 10 COLETTO CREEK (2350) PETRA OLEUM CORP. 199964 PRIBYL 12 COLETTO CREEK (2300) PETRA OLEUM CORP. 257736 PRICE G. U. -T- 1 C GAFFNEY (4700) BRAZOS PETROLEUM, INC. 067528 PRICE G. U. -T- 1 T GAFFNEY (5300) BRAZOS PETROLEUM, INC. 067529 PRICE, J. 1 BEGO (CONSOLIDATED) CODY ENERGY LLC 203386 PRICE, J. 2 BEGO (CONSOLIDATED) CODY ENERGY LLC 216100 PRIDGEN ET AL 1 FRIAR RANCH, S. (CONSOLIDATED) HILCORP ENERGY COMPANY 249182 PRIDGEN ET AL A-690 1 FRIAR RANCH, S. (CONSOLIDATED) HILCORP ENERGY COMPANY 248707 PRIESS, A. 2 FANNIN, NORTH (3750) KTC OIL ENTERPRISES, LLC 141226 PRITCHARD GAS UNIT 1 HOPE (WILCOX MASSIVE) LIGHTHOUSE OPERATING, INC. 262983 PROVIDENT CITY G.U. 15 PROVIDENT CITY (WILCOX 11,900) NEWFIELD EXPLORATION COMPANY 256520 PROVIDENT CITY G.U. 15 PROVIDENT CITY NE (LWR WX. CONS) NEWFIELD EXPLORATION COMPANY 227402 PROVIDENT CITY G.U. 16 PROVIDENT CITY NE (LWR WX. CONS) NEWFIELD EXPLORATION COMPANY 231135 PROVIDENT CITY GAS UNIT 1 PROVIDENT CITY (WILCOX 11,500) NEWFIELD EXPLORATION COMPANY 220696 PROVIDENT CITY GAS UNIT 5 PROVIDENT CITY (WILCOX 8,600) FIELDWOOD ONSHORE LLC 003809 PROVIDENT CITY GAS UNIT 6 PROVIDENT CITY (WILCOX 8,600) FIELDWOOD ONSHORE LLC 003810 PROVIDENT CITY UNIT 1 PROVIDENT CITY (WILCOX 8,600) FIELDWOOD ONSHORE LLC 003812 PROVIDENT MINERALS G.U. 1 PROVIDENT CITY (WILCOX 7) HILCORP ENERGY COMPANY 198439 PROVIDENT MINERALS GAS UNIT 2 PROVIDENT CITY (WILCOX 13700) HILCORP ENERGY COMPANY 163829 PUCKETT 1 CAESAR, SOUTH (5650) ANDERSON OIL LTD. 223476 PULLIN UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266490 PULLIN UNIT B 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271527 PUSTEJOVSKY 1 PANNA MARIA (EDWARDS) SCHMID PROPERTIES, INC. 130286 PUTNAM GAS UNIT 1 HIGHLANDER (CARRIZO) BAY ROCK OPERATING COMPANY 209859 PYLE UNIT 1 PROVIDENT CITY (MIOCENE 3000) B D PRODUCTION CO., INC. 224301 PYLE, H. B. 4 PROVIDENT CITY (FRIO 2980) FIELDWOOD ONSHORE LLC 178253 PYLE, WILLIAM 1 ATKINSON (KLINGEMAN) NELSON, JAMES L. 083147 QUAIL RIDGE/STATE UNIT 3905 LAVACA BAY (F-46) NEUMIN PRODUCTION COMPANY 267712 QUAIL RIDGE/STATE UNIT 3906 LAVACA BAY (F-46) NEUMIN PRODUCTION COMPANY 275993 QVS 1D OAKVILLE (QUEEN CITY 5350) KEY ENERGY SERVICES, LLC 198249 R BORCHARDT UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268564 R BORCHARDT UNIT C 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 264315 R. BORCHARDT UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266269 R. GREEN 1 WARMSLEY (VAUGHN) LRE OPERATING, LLC 264785 R. RUHMANN GAS UNIT 2-E 1 KENEDY, SW. (EDWARDS) DEWBRE PETROLEUM CORPORATION 112637 R. RUHMANN GAS UNIT 2-E 2 KENEDY, SW. (EDWARDS) DEWBRE PETROLEUM CORPORATION 213720 R. S. I. 2 WOODSBORO (4900) KEBO OIL & GAS, INC. 272660 R. S. I. 3 WOODSBORO (3150) KEBO OIL & GAS, INC. 274964 RABE GAS UNIT 1 NORMANNA (CONSOLIDATED) H & P EXPLORATION CO. 167216


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ RACKLEY 1 RACKLEY (FRIO) QNK ENERGY,INC. 222493 RACKLEY 2 WILDCAT QNK ENERGY,INC. 249622 RAGSDALE UNIT A 3 VIENNA (FRIO 3000) MOOSE OPERATING CO., INC. 147725 RAINOSEK 1 WORD, N. (EDWARDS) TRIO CONSULTING & MANAGEMENT,LLC 099888 RAMSEY 1 ALBRECHT (REKLAW) NELSON, JAMES L. 031580 RAMSEY 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 191190 RAMSEY B 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 195501 RAMSEY, GRACE 2A MCKEE (PETTUS) BELLOWS OPERATING CO., L. C. 143368 RAMSEY, MERLE 1 BRANDT (YEGUA 4700) MAGELLAN RESOURCES 087558 RAMSEY, R. 6 A-B-R (WILCOX 3RD, MASSIVE) ABEL, M.D. CO. 153975 RAMSEY, R. H. 2 BIG OAK (FRIO 2825) LIGHTNING OIL COMPANY 176462 RAMSEY, RALPH W. 3 A-B-R (FRIO 2800) ABEL, M.D. CO. 046462 RAMSEY, RALPH W. "H" H 1 A-B-R (4850 YEGUA) ABEL, M.D. CO. 247192 RANCH -L- O/A 1 LOLITA (5800) PACE PRODUCTION CO. 002657 RANCHO GRANDE TRUST 168-1 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 268211 RANCHO GRANDE TRUST 168-1 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 261448 RANCHO SALADO 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259786 RANCHO SALADO EAST UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266280 RANDOW GAS UNIT #1 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 089718 RANDOW GAS UNIT #1 2 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 095647 RANDOW, H. C. GAS UNIT NO. 1 3 WORD (WILCOX, LOWER) CAPITAL STAR OIL & GAS, INC. 275678 RANDOW, H. C. GAS UNIT NO. 1 3 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 121519 RANEY 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 260384 RAPIDO 1 ERNIE BAKER (PECAN GAP) OKY INVESTMENTS, INC. 177622 RAPP 1 FREEMAN (PETTUS 4600) DEWBRE PETROLEUM CORPORATION 232252 RAPP 4 TULETA, WEST (3300) DIRNETT, INC. 213240 RAPP RANCH 1 MT. LUCAS (HOCKLEY, UP.) WELDER EXPLORATION & PROD., INC. 270547 RATH 1 ARNECKEVILLE (HILLER 10900) KENNE EXPLORATION, INC. 124492 RATHKAMP UNIT 1H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 276090 RATHKAMP UNIT 2H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 271614 RATHKAMP UNIT 3H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 275166 RATHKAMP UNIT 4H DE WITT (EAGLE FORD SHALE) SABINE OIL & GAS CORPORATION 276304 RATHKAMP, AUGUST 1 C SPEARY (ROEDER 9100) OKIE OPERATING COMPANY, LTD. 031995 RATHKAMP, AUGUST 1 T SPEARY (WILCOX 9500) OKIE OPERATING COMPANY, LTD. 022970 RATLIFF 1R MAYO (5460) PITCHFORK OIL & GAS, INC. 150131 RATLIFF 2 MAYO (5655) PITCHFORK OIL & GAS, INC. 158292 RATLIFF, GENE -C- 4 MAYO (5300 FRIO) PITCHFORK OIL & GAS, INC. 063894 RAU 1 BRANDT (COOK MOUNTAIN) PROGENIES OPERATING LLC 239361 RAU 1 WESER (RECKLAW 7560) NELSON, JAMES L. 139306 RAU, CHARLES 9 PROVIDENT CITY, NE (3050) FIELDWOOD ONSHORE LLC 207948 RAY 111 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 228874 RAY 120 KERR (8200) TRINITY RIVER ENERGY OPER, LLC 262921 RAY 124 TULSITA-WILCOX (MWC) TRINITY RIVER ENERGY OPER, LLC 232140 RAY, G. A. 91 PETTUS (8950) TRINITY RIVER ENERGY OPER, LLC 095430 RAY, GEO. A. 85 PETTUS (VICKSBURG 2900) GAITHER PETROLEUM CORPORATION 044564 RAY, GEO. A. 90 PETTUS (VICKSBURG 2900) GAITHER PETROLEUM CORPORATION 078931 RAY, GEORGE 1 PETTUS, E. (REKLAW) PRIDE ENERGY COMPANY 132744 RAY, GEORGE 2-C PETTUS, E. (LULING) PRIDE ENERGY COMPANY 141620 RAY, GEORGE 2-T PETTUS, E. (MACKHANK) PRIDE ENERGY COMPANY 141137 RAY, GEORGE 3 PETTUS, E. (LULING) PRIDE ENERGY COMPANY 142398 RAY, GEORGE 4LT PETTUS, E. (MACKHANK) PRIDE ENERGY COMPANY 144386


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ RAY, GEORGE 4UT PETTUS, E. (THIRD LULING) PRIDE ENERGY COMPANY 144369 RAY, GEORGE 5 PETTUS, E. (A-2 WILCOX) PRIDE ENERGY COMPANY 144763 RAY, GEORGE 6 PETTUS, E. (THIRD LULING) PRIDE ENERGY COMPANY 145643 RAY, GEORGE A 103 D KERR (REKLAW) TRINITY RIVER ENERGY OPER, LLC 207110 RAY, GEORGE A. 1 RAY SYDSON ENERGY, INC. 121232 RAY, GEORGE A. 2 RAY SYDSON ENERGY, INC. 131576 RAY, GEORGE A. 79 KERR (REKLAW) TRINITY RIVER ENERGY OPER, LLC 055776 RAY, GEORGE A. 89 KERR (REKLAW) TRINITY RIVER ENERGY OPER, LLC 137563 RAY, GEORGE A. 93 KERR (7600) TRINITY RIVER ENERGY OPER, LLC 153123 RAY, GEORGE A. 99 D TULSITA-WILCOX ( SLICK) TRINITY RIVER ENERGY OPER, LLC 220989 RAY, GEORGE A. 99 F KERR (LULING) TRINITY RIVER ENERGY OPER, LLC 219741 RAY, GEORGE A. 99-D KERR (8200) TRINITY RIVER ENERGY OPER, LLC 181054 RAY, GEORGE A. 99-F KERR (MASSIVE) TRINITY RIVER ENERGY OPER, LLC 181073 RAY, GEORGE A. 100-D KERR (MASSIVE) TRINITY RIVER ENERGY OPER, LLC 180248 RAY, GEORGE A. 100-F KERR (7910) TRINITY RIVER ENERGY OPER, LLC 180476 RAY, GEORGE A. 101 KERR (LULING) TRINITY RIVER ENERGY OPER, LLC 183627 RAY, GEORGE A. 103 F TULSITA-WILCOX ( MACKHANK) TRINITY RIVER ENERGY OPER, LLC 221626 RAY, GEORGE A. 104 KERR (LULING) TRINITY RIVER ENERGY OPER, LLC 185398 RAY, GEORGE A. 104 KERR (7910) TRINITY RIVER ENERGY OPER, LLC 221274 RAY, GEORGE A. 108 TULSITA-WILCOX ( SLICK) TRINITY RIVER ENERGY OPER, LLC 210454 RAY, GEORGE A. ET UX 2 PEYTON (YEGUA) THIRD COAST ENERGY, INC. 175939 RAY, J. W. JR. 1 J. W. RAY (2000) DELEON PARTNERS, LTD. 082495 RAY, T. 1A GAMBLE GULLY, SW. (7100) NEWTON CORP.,THE 145757 RAY, T. 3A GAMBLE GULLY, SW (THIRD MASSIVE) NEWTON CORP.,THE 151835 RAY, WILLIAM II 1 ZACODY (FRIO) AEGEAN OIL CORP. 103482 RAYES A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 263754 REA, W. L. 1 REFUGIO OLD (1750) JETGAS COMPANY 030933 REA, W. L. 3 REFUGIO OLD (1500) JETGAS COMPANY 003942 REA, W. L. 4 REFUGIO HEARD (4500) MISSION RIVER SYSTEMS, INC. 003912 REAGAN "A" 3 SIERRA VISTA (QUEEN CITY) JORDAN OIL COMPANY, INC. 256297 REAGAN GAS UNIT 1 TEXAM (WILCOX 7600) DOGWOOD OPERATING COMPANY, INC. 207892 REAGAN, L. A. 1 OAKVILLE (2000) CARTER & CARTER 003309 REAGAN, L. A. 1 OAKVILLE, E. (WILCOX 9400) COLUMBUS ENERGY, LLC 105760 REAGAN, L. A. 1 TEXAM (QUEEN CITY) WEEK-END OIL COMPANY 082124 REAGAN, L. A. 3 OAKVILLE-WILCOX (SLICK) ORIGIN PRODUCTION GROUP LLC 083541 REAGAN, L.A. 1 OAKVILLE, EAST (SLICK) TT OPERATING, LLC 133214 REAGAN, L.A. 3 L OAKVILLE-WILCOX(7700-A) JJRS INVESTMENTS INC. 132074 REAGAN, L.A. (TEAL) 1 OAKVILLE, SOUTH (QUEEN CITY) TT OPERATING, LLC 127987 REAGAN, ROBERT ET AL 5T OAKVILLE (1550) JJRS INVESTMENTS INC. 153095 REAGAN, ROBERT H. 7 OAKVILLE-WILCOX (LULING) TT OPERATING, LLC 147008 REAGAN, ROBERT H. ET AL 9 OAKVILLE-WILCOX (LULING) TT OPERATING, LLC 147114 REAGAN, ROBERT H. ETAL 5 C OAKVILLE, SOUTH (QUEEN CITY) TT OPERATING, LLC 127915 REAMY 1 HIGHLANDER (CARRIZO) BAY ROCK OPERATING COMPANY 192051 RED WOLF SW 1 1SW YOAKUM (6400) RED WOLF OIL COMPANY, INC. 265498 REED, D. M. 2 CABEZA CREEK, S. (SLICK WILCOX) AURORA RESOURCES CORPORATION 001092 REED, S. H. 1 CABEZA CREEK, SOUTH (M. W. 8300) PEARL, BILL H. PRODUCTIONS, INC. 043780 REED, S. H. 3 CABEZA CREEK, SOUTH (PETTUS) PEARL, BILL H. PRODUCTIONS, INC. 172384 REED, S. H. 3 CABEZA CREEK, S. (YEGUA 4747) PEARL, BILL H. PRODUCTIONS, INC. 147496 REED, T. M. 1 CABEZA CREEK, S. (RECKLAW 7700) MOSBACHER ENERGY COMPANY 061265 REEVES, C. -A- 1 COLOGNE (1600) KIRKPATRICK, JOHN OIL LLC 130285 REEVES, C. "A" 2 COLOGNE (2870) KIRKPATRICK, JOHN OIL LLC 153645


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ REEVES, CLAUD, ET AL 1 C COLOGNE (1200) UNICORN ENERGY, INC. 037250 REEVES, CLAUD, ET AL 1 T COLOGNE (1450) UNICORN ENERGY, INC. 037249 REGMUND FAMILY TRUST GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 262069 REGMUND FAMILY TRUST GAS UNIT 1 C 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 268683 REGMUND GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 260243 REGMUND GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 268100 REGMUND GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 276663 REHM 1 WILDCAT ALTA MESA SERVICES, LP 275702 REID 1R HOPE (MIOCENE 1250) LAVACA RIVER OPERATING CO., LLC 263676 REIFFERT -A- G. U. 1 FRIAR RANCH, S. (CONSOLIDATED) RAMTEX ENERGY LLC 173618 REIFFERT "D" 3 REIFFERT (YEGUA 5160) B D PRODUCTION CO., INC. 190358 REIFFERT "D" 4 REIFFERT (YEGUA 5600) B D PRODUCTION CO., INC. 214750 REIFFERT-THOMAS G. U. #1 1 FRIAR RANCH, S. (CONSOLIDATED) D AND J OPERATING, LLC 171298 REIFFERT-THOMAS G.U. #1 2 FRIAR RANCH, S. (CONSOLIDATED) PETROLEUM RESOURCE MANAGEMENT CO 174104 REILLY, ANNIE ET VIR 2GD GRETA (L-12) HILCORP ENERGY COMPANY 227875 REILLY, ANNIE ET VIR 2GF TOM OCONNOR (3900) HILCORP ENERGY COMPANY 031640 REILLY, ANNIE ET VIR 3 TOM OCONNOR (3900, SOUTH) HILCORP ENERGY COMPANY 210665 REILLY, ANNIE ET VIR 5 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 180473 REILLY, ANNIE ET VIR 10D TOM O'CONNOR (3560) HILCORP ENERGY COMPANY 220110 REILLY, W. J., ETAL 3 REFUGIO HEARD (6300) PANHANDLE PROD. & REFG. CO. 003931 REMMERS 2 A SLICK (PETTUS) B D PRODUCTION CO., INC. 223282 REMMERS 4-U NORDHEIM, SW. (12,000) ARCADIA OPERATING, LLC 141728 REMMERS (DEEP) 4-L NORDHEIM, SW. (12,750) ARCADIA OPERATING, LLC 141726 REMMERS (DEEP) 6 NORDHEIM, SW. (12,600) ARCADIA OPERATING, LLC 197946 REMMERS (DEEP) 7 NORDHEIM, SW. (12,600) ARCADIA OPERATING, LLC 196959 REMMERS (DEEP) 8 NORDHEIM, SW. (12,600) ARCADIA OPERATING, LLC 205831 REMMERS (DEEP) 8 NORDHEIM, SW. (12,600) ARCADIA OPERATING, LLC 274887 REMMERS (DEEP) GAS UNIT 3 NORDHEIM, SW. (11,600) ARCADIA OPERATING, LLC 209487 REMMERS, ELLIE ET AL 1 PENA (YEGUA 4700) B D PRODUCTION CO., INC. 127148 RENFRO 1 FRANCITAS (TRULL 8990) HEMCO DEVELOPMENT, LLC 203212 RENGER 1 CAMPBELL CREEK (9300) MASCOT OIL COMPANY 245446 RENGER GAS UNIT 1 VIENNA (FRIO 3250) MOOSE OPERATING CO., INC. 164646 RENGER GAS UNIT 1 WORD, N. (3200) CIMAREX ENERGY CO. OF COLORADO 194700 RENGER-SASSIN 1 HALLETTSVILLE, SOUTH (WX. 6900) TRIO CONSULTING & MANAGEMENT,LLC 220935 RENGER, HARVEY GAS UNIT 4 RENGER (WILCOX 12600) CANTERA OPERATING, LLC 222045 RESPONDEK 1 BUCHEL (AUSTIN) MASTODON OPERATING COMPANY, LLC 216680 RESSMAN 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 259855 RESSMAN 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 265659 RESSMAN 01 08H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 276691 REUTTER 1 WEESATCHE, NE. (HOLT FB A) RAMTEX ENERGY LLC 165024 REUTTER-DOHMANN UNIT 2 WEESATCHE, NE. (HOLT FB A) RAMTEX ENERGY LLC 170068 REXER 1 PROVIDENT CITY (WILCOX 11,900) PATARA OIL & GAS LLC 259252 REXER-NEUHAUS 1 PROVIDENT CITY (WILCOX 11,500) NEWFIELD EXPLORATION COMPANY 178003 REXER-TUSA UNIT 2 PROVIDENT CITY (WILCOX 10800) PATARA OIL & GAS LLC 266314 REYNOLDS GAS UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 261735 REYNOLDS, MARY A. 21 RAMIRENA, SW.(SEC. B, JACKSON 3) HART PETROLEUM SERVICES, INC 159823 REYNOLDS, MARY A. 25 RAMIRENA, SW(YEGUA 4, SEG. C) HART PETROLEUM SERVICES, INC 182543 REYNOLDS, MARY A. 31 D RAMIRENA, SW. (YEGUA #2 SD.) HART PETROLEUM SERVICES, INC 080410 REYNOLDS, MARY A. 36 RAMIRENA, SW. (YEGUA #2 SD.) HART PETROLEUM SERVICES, INC 098691 REYNOLDS, MARY A. 40 RAMERINA, SW. (D-80) HART PETROLEUM SERVICES, INC 181724 RHODE, D.W. 2 TEXAM (COLE) ORIGIN PRODUCTION GROUP LLC 152853


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ RHODES TRUST 1 KAWITT (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 168731 RHODES TRUST 3H KAWITT (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 209648 RHODES, V. E. GAS UNIT #1 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 077478 RHODES, V. E. GAS UNIT #1 3 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 101737 RHODES, V. E. GAS UNIT NO. 1 2 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 079955 RHODES, V.E. GAS UNIT NO. 1 4 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 157793 RICE, EUGENE 2 YOAKUM (3RD 8250 UPPER) UNIT PETROLEUM COMPANY 074995 RICHARD GERBERT 2 HOLLY, WEST (2000) CHAPARRAL ENERGY, L.L.C. 228038 RICHARD M. LUCAS ET AL -A- 1 BERCLAIR, E. (FRIO MIDDLE) T-C OIL COMPANY, LLC 261870 RICHARDSON, LOYD 1 FANNIN, SOUTH (TAG) WINCHESTER ENERGY OPERATING CO. 110622 RICHTER 1 MAXINE, EAST (9800) KEBO OIL & GAS, INC. 257225 RICKS LIVING TRUST GU 1 B 3H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 268490 RICKS LIVING TRUST GU2 A 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 268702 RICO 1 STRAUCH-WILCOX (PETTUS) GAITHER PETROLEUM CORPORATION 246280 RIDLEY FARMS 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266584 RIDLEY FARMS 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266586 RIDLEY 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 263530 RIDLEY 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268662 RIDLEY 01 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269546 RIDLEY 01 04H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269685 RIDLEY 01 07H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271813 RIDLEY 01 09H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271605 RIEDEL, MARTHA ANN 1 SLICK (YEGUA 4760) PRIDE ENERGY COMPANY 138304 RIEDEL, W. H. 1 SLICK (YEGUA 4760) PRIDE ENERGY COMPANY 142829 RIEDEL, W. T. ET AL 1 SLICK, NE. (7600) CIBOLO ENERGY OPERATING, INC. 187327 RIEDEL, W.H. 2 SLICK (PETTUS) PRIDE ENERGY COMPANY 130963 RIEDESEL 02 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 267713 RIEDESEL 02 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 271736 RIEMENSCHNEIDER 1 FIFTEEN MILE CREEK (WILCOX) MAGNUM PRODUCING, LP 192476 RIGGLE 2 YOUGEEN (HOCKLEY 4500) WELDER EXPLORATION & PROD., INC. 270488 RIGGS, GERTRUDE 1 KAREN BEAUCHAMP (2100) PARAMONT, INC. 031419 RIGGS, GERTRUDE 3 KAREN BEAUCHAMP (2626) PARAMONT, INC. 121475 RIGGS, GERTRUDE 3 KAREN BEAUCHAMP (2700) MORGAN & RIGGS PRODUCING, INC. 076256 RIGGS, GERTRUDE 4 KAREN BEAUCHAMP (2100) PARAMONT, INC. 076963 RIGGS, GERTRUDE 5 KAREN BEAUCHAMP (2100) PARAMONT, INC. 122211 RIGGS, GERTRUDE 5 KAREN BEAUCHAMP (2700) PARAMONT, INC. 085075 RIGGS, GERTRUDE 6 KAREN BEAUCHAMP (1650) PARAMONT, INC. 147389 RIGGS, J. W. 1 KAREN BEAUCHAMP (1650) PARAMONT, INC. 144052 RILEY 1 CANNAN, E. (10150 WILCOX) HUGHES, DAN A. COMPANY, L.P. 212128 RILEY 1 CANNAN, E. (10300 WILCOX) HUGHES, DAN A. COMPANY, L.P. 212101 RIO RANCHO UNIT 1 GAFFNEY, SW. (4900) CHARRO OPERATING, L.L.C. 258043 RISER 1 BURIED TREASURE (THIRD TOM LYNE) MILAGRO EXPLORATION, LLC 238213 RISER 4 MOUNTAIN VIEW (WILCOX 9350) HURD ENTERPRISES, LTD. 274178 RISER, E. L. 1 MOUNTAIN VIEW (WILCOX 9350) WAGNER OIL COMPANY 102242 RISER, E. L. 2 MOUNTAIN VIEW (SAND 4) WAGNER OIL COMPANY 109083 RISER, E. L. 3 MOUNTAIN VIEW (WILCOX 9500) WAGNER OIL COMPANY 180191 RISER, J. G. 1 LEROY (WILCOX 9500) HURD ENTERPRISES, LTD. 166406 RIVER RANCH 3 OCONNOR RANCH (FRIO CONS.) CHARRO OPERATING, L.L.C. 190190 RIVER RANCH 4 OCONNOR RANCH (FRIO CONS.) CHARRO OPERATING, L.L.C. 190193 RIVER RANCH 8 LIVE OAK LAKE (CONSOLIDATED) CHARRO OPERATING, L.L.C. 198771 RIVER RANCH 10 LIVE OAK LAKE (CONSOLIDATED) CHARRO OPERATING, L.L.C. 207982


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ RIVER RANCH 16 LIVE OAK LAKE (CONSOLIDATED) CHARRO OPERATING, L.L.C. 206515 RIVER RANCH 18 OCONNOR RANCH (FRIO CONS.) CHARRO OPERATING, L.L.C. 212441 RIVER RANCH 19 LIVE OAK LAKE (CONSOLIDATED) CHARRO OPERATING, L.L.C. 206514 RIVER RANCH 20 LIVE OAK LAKE (CONSOLIDATED) CHARRO OPERATING, L.L.C. 206518 RIVER RANCH 23 LIVE OAK LAKE (CONSOLIDATED) CHARRO OPERATING, L.L.C. 206520 RIVER RANCH 29 LIVE OAK LAKE (CONSOLIDATED) CHARRO OPERATING, L.L.C. 212406 RIVER RANCH 30 LIVE OAK LAKE (CONSOLIDATED) CHARRO OPERATING, L.L.C. 210016 RIVER RANCH 35 SARCO CREEK (2800) CHARRO OPERATING, L.L.C. 220836 RIVER RANCH 37 LIVE OAK LAKE (CONSOLIDATED) CHARRO OPERATING, L.L.C. 239779 RIVER RANCH 38 LIVE OAK LAKE (CONSOLIDATED) CHARRO OPERATING, L.L.C. 233412 RIVER RANCH 39 LIVE OAK LAKE (CONSOLIDATED) CHARRO OPERATING, L.L.C. 228855 RIVER RANCH 58 LIVE OAK LAKE (CONSOLIDATED) CHARRO OPERATING, L.L.C. 258526 RIVER RANCH F 40 OCONNOR RANCH (FRIO CONS.) CHARRO OPERATING, L.L.C. 254111 RIVER RANCH F 43 OCONNOR RANCH (FRIO CONS.) CHARRO OPERATING, L.L.C. 254113 RIVER RANCH -C- 1 HUFF (2200) T-C OIL COMPANY, LLC 241970 RIVER RANCH -D- 1 VIDAURI, NORTH (5500) T-C OIL COMPANY, LLC 242785 RIVER RANCH "F" 41 OCONNOR RANCH (FRIO CONS.) CHARRO OPERATING, L.L.C. 247727 RIVER RANCH "F" 42 OCONNOR RANCH (FRIO CONS.) CHARRO OPERATING, L.L.C. 247728 RIVER RANCH C 5 OCONNOR RANCH (FRIO CONS.) CHARRO OPERATING, L.L.C. 199025 RIVER RANCH D 7 OCONNOR RANCH (FRIO CONS.) CHARRO OPERATING, L.L.C. 200199 RIVER RANCH E 11 FANNIN, SOUTH (TAG) CHARRO OPERATING, L.L.C. 200058 RIVER RANCH F 46 LIVE OAK LAKE (5000) CHARRO OPERATING, L.L.C. 261828 RIVERDALE 2 WAYNO BUENO (8650 WILCOX SD.) RAMTEX ENERGY LLC 189496 RIVERDALE GAS UNIT NO. 1 1 WAYNO BUENO (WILCOX MASSIVE) RAMTEX ENERGY LLC 190783 RIVERDALE GAS UNIT NO. 1 3 ALBRECHT (SLICK) RAMTEX ENERGY LLC 191228 RIVERSIDE COTTON FARM B 6 C PRIDHAM LAKE (1560) SURE FLOW OIL & GAS, INC. 074604 RIVERSIDE COTTON FARMS 1 PRIDHAM LAKE (4500) FREDDY'S WELL SERVICE, INC. 056363 RIVERSIDE COTTON FARMS B 6 T PRIDHAM LAKE (4500) SURE FLOW OIL & GAS, INC. 057016 ROARK G. U. "A" 3 OAKVILLE, SOUTH (L. SLICK) CIMAREX ENERGY CO. OF COLORADO 153704 ROARK, G. U. "A" 2 OAKVILLE (WILCOX CONS.) CIMAREX ENERGY CO. OF COLORADO 101275 ROB & VAN RAMSEY UNIT 1 MUY BUENO (10904) LIGHTNING OIL COMPANY 255445 ROBBINS 2 WESTHOFF (COMBINED ASSOCIATED) BXP OPERATING, LLC 256490 ROBBINS 4 WESTHOFF (COMBINED ASSOCIATED) BXP OPERATING, LLC 258723 ROBBINS 7 WESTHOFF (COMBINED ASSOCIATED) BXP OPERATING, LLC 271741 ROBBINS, F.S. (MFMU 1301) 1 LA WARD, NORTH (4700) KD ENERGY, LLC 205543 ROBERT CRAWLEY 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 255805 ROBERT GRUNDER 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 267709 ROBERT HEARD GAS UNIT 2A REFUGIO-FOX (3300) G. & M. ENERGY COMPANY 106953 ROBERTS 1 STRAUCH-WILCOX (VELA) SHOREHAM OIL & GAS COMPANY, INC. 149128 ROBERTS UNIT 1 INEZ (8600) TRANS-PECOS RESOURCES, INC. 136164 ROBERTS, MORRIS ET AL 2 C DIRKS (HOCKLEY 2700) WEST TULETA OPERATING CORP. 117177 ROBERTS, MORRIS ET AL 2 T DIRKS (HOCKLEY 3300) WEST TULETA OPERATING CORP. 117179 ROBERTS, REAGAN 1 CIRCLE -A- (2600) BLANCONIA PRODUCING CORPORATION 083492 ROBERTSON 1 SPEAKS (12700 WILCOX) CANTERA OPERATING, LLC 185705 ROBERTSON 1 SPEAKS, NW. (WILCOX 12,800) SHALE HUNTER, LLC 239493 ROBERTSON 2 SPEAKS (12700 WILCOX) CANTERA OPERATING, LLC 191230 ROBERTSON 3 SPEAKS (12700 WILCOX) CANTERA OPERATING, LLC 194148 ROBERTSON 3 SPEAKS (16250 WILCOX) CANTERA OPERATING, LLC 192291 ROBERTSON 5 SPEAKS (12700 WILCOX) CANTERA OPERATING, LLC 198793 ROBERTSON 5 SPEAKS (16250 WILCOX) CANTERA OPERATING, LLC 205212 ROBERTSON 7 SPEAKS (12700 WILCOX) CANTERA OPERATING, LLC 196923


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ ROBERTSON 7 SPEAKS (16250 WILCOX) CANTERA OPERATING, LLC 199050 ROBERTSON 8 SPEAKS (12700 WILCOX) CANTERA OPERATING, LLC 204870 ROBERTSON 8 SPEAKS (16250 WILCOX) CANTERA OPERATING, LLC 205327 ROBERTSON 9 SPEAKS (12700 WILCOX) CANTERA OPERATING, LLC 211844 ROBERTSON 9 SPEAKS (16250 WILCOX) CANTERA OPERATING, LLC 211843 ROBERTSON 10 R SPEAKS (12700 WILCOX) CANTERA OPERATING, LLC 221971 ROBERTSON -F- 9R SPEAKS, SW. (3000) XTO ENERGY INC. 199101 ROBERTSON-ROSS UNIT #1 1 MAYO KD ENERGY, LLC 099941 ROBINSON 1 BERCLAIR (2100) TOMBA OIL CO. 000845 ROBINSON 1 COLLIER (YEGUA Y-3) ALTA MESA SERVICES, LP 202783 ROBINSON 1 COLLIER, NORTH (ROBINSON) ALTA MESA SERVICES, LP 271037 ROBINSON 1B TULETA, WEST (VICKSBURG G) REPUBLIC RESOURCES, LLC. 116155 ROBINSON 2 WILDCAT MILAGRO EXPLORATION, LLC 195474 ROBINSON 2 COLLIER (4000) ALTA MESA SERVICES, LP 207812 ROBINSON 5B TULETA (CATAHOULA "A" 1230) REPUBLIC RESOURCES, LLC. 190259 ROBINSON 5B TULETA, WEST (HOCKLEY 3100) REPUBLIC RESOURCES, LLC. 177978 ROBINSON-BUCKEYE UNIT 1 LONKEN (7030) ZACHRY EXPLORATION, LLC 242643 ROBINSON-CARDINAL 1 BRISCOE (CATAHOULA 3050) ZACHRY EXPLORATION, LLC 250567 ROBINSON-GATOR 1 LAVACA RIVER (FRIO 4400) ZACHRY EXPLORATION, LLC 240713 ROBINSON-LONGHORN 1 LAVACA RIVER (FRIO 4400) ZACHRY EXPLORATION, LLC 247324 ROBINSON-LONGHORN UNIT 2 WILDCAT ZACHRY EXPLORATION, LLC 252119 ROBINSON-REAVES 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 185702 ROBINSON-REAVES 2 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 216437 ROBINSON-REAVES 3 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 225528 ROBINSON-REAVES 4 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 216446 ROBINSON-REAVES 5 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 227715 ROBINSON-SOONER SOUTH 1 LARGO NAVIDAD (6560) ZACHRY EXPLORATION, LLC 247334 ROBINSON, D. E. 4 HOCKLEY (3535) REPUBLIC RESOURCES, LLC. 101468 ROBINSON, VELMA 1 COLLIER (2200) ATLANTIC & GULF-WESTERN PET CORP 054684 ROBINSON, VELMA 2 MORALES (1750) ATLANTIC & GULF-WESTERN PET CORP 081065 ROBINSON, VELMA 3 C COLLIER (3800 FRIO) ATLANTIC & GULF-WESTERN PET CORP 081148 ROBINSON, VELMA 3 T COLLIER, EAST (MIOCENE) ATLANTIC & GULF-WESTERN PET CORP 119642 ROBINSON, VELMA 4 MORALES (1500) ALS PRODUCTION CO. 078066 ROCHE 1 ROCHE, S. (CHAMBERLAIN) SALIDA EXPLORATION, LLC 227407 ROCHE 2 CACTUS (SINTON) GAITHER PETROLEUM CORPORATION 175285 ROCHE 2 ROCHE, S. (CHAMBERLAIN) SALIDA EXPLORATION, LLC 231460 ROCHE 4R CACTUS (FRIO MASSIVE) SALIDA EXPLORATION, LLC 258523 ROCHE 8 ROCHE (6000 SAND) SALIDA EXPLORATION, LLC 251219 ROCHE 9 ROCHE (6000 SAND) SALIDA EXPLORATION, LLC 261759 ROCHE 11 ROCHE, S. (CHAMBERLAIN) SALIDA EXPLORATION, LLC 267474 ROCHE 12 ROCHE, S. (CHAMBERLAIN) HILCORP ENERGY COMPANY 188215 ROCHE, K. D. "A" 29 ROCHE (6400) H & D OPERATING COMPANY 177895 ROCHE, K. D. A 4 ROCHE (6400) H & D OPERATING COMPANY 178923 ROCHE, K. D. A 5 ROCHE (6400) H & D OPERATING COMPANY 178397 ROCHE, K. D. A 20 ROCHE (6400) H & D OPERATING COMPANY 158279 ROCHE, K. D. A 24 ROCHE (6400) H & D OPERATING COMPANY 184135 ROCHE, K. D. A 27 ROCHE (6400) H & D OPERATING COMPANY 148070 ROCHE, K. D. A 28 ROCHE (6400) H & D OPERATING COMPANY 181080 ROCHE, K. D. A 41 ROCHE (6400) H & D OPERATING COMPANY 184136 ROCHE, KATHELINE A 3 ROCHE, WEST (GRIFFITH) ENERGY INTERNATIONAL 081522 ROCHE, KATHERINE D. 1 ROCHE, WEST (GRIFFITH) ENERGY INTERNATIONAL 073571


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ ROCHELLE 1 DRY HOLLOW (GILSTRAP) MILAGRO EXPLORATION, LLC 203594 ROCHELLE 2 DRY HOLLOW (RAINBOW SAND) MILAGRO EXPLORATION, LLC 172034 ROCHELLE 3 DRY HOLLOW (ROCHELLE SAND) MILAGRO EXPLORATION, LLC 174438 ROCHELLE 4 DRY HOLLOW (RAINBOW SAND) MILAGRO EXPLORATION, LLC 212420 ROCHELLE 4 DRY HOLLOW (13,900 WILCOX) MILAGRO EXPLORATION, LLC 183156 ROCHELLE 5 DRY HOLLOW (14100 WILCOX) MILAGRO EXPLORATION, LLC 202584 ROCHELLE 6 DRY HOLLOW (13,900 WILCOX) MILAGRO EXPLORATION, LLC 197995 ROCHELLE 7 DRY HOLLOW (13,900 WILCOX) MILAGRO EXPLORATION, LLC 197996 ROCHELLE GAS UNIT 1R DRY HOLLOW (WILCOX DAGG, NE) MILAGRO EXPLORATION, LLC 231373 ROCHELLE GAS UNIT 9 DRY HOLLOW (GILSTRAP) MILAGRO EXPLORATION, LLC 238034 RODEN 1 LAVACA RIVER (1700) LAVACA RIVER OPERATING CO., LLC 232912 RODEN 2 LAVACA RIVER (1700) LAVACA RIVER OPERATING CO., LLC 235958 RODEN 4 HOPE (MIOCENE 2500) LAVACA RIVER OPERATING CO., LLC 257536 RODEN GAS UNIT 3 LAVACA RIVER (1700) LAVACA RIVER OPERATING CO., LLC 240424 RODEN GAS UNIT NO.1 1 RENGER (WILCOX 12600) CANTERA OPERATING, LLC 228682 RODEN GAS UNIT 1 2 ALGENY (WILCOX 9600) CANTERA OPERATING, LLC 274680 RODEN GAS UNIT 1 3 RENGER (WILCOX 12600) CANTERA OPERATING, LLC 232827 RODEN GAS UNIT 1 4 RENGER (WILCOX 12600) CANTERA OPERATING, LLC 234533 RODEN GU 1 5 RENGER (WILCOX 12600) CANTERA OPERATING, LLC 242112 RODEN UNIT 1 LAVACA RIVER (1700) PREMIUM EXPLORATION COMPANY 163962 RODGERS 1 NEIGHBORHOOD (LOWER WILCOX) CANTERA OPERATING, LLC 234586 RODGERS GAS UNIT NO.1 2 NEIGHBORHOOD (LOWER WILCOX) CANTERA OPERATING, LLC 234756 RODGERS GU 1 3 NEIGHBORHOOD (LOWER WILCOX) CANTERA OPERATING, LLC 252110 ROEDER GAS UNIT 1 WARMSLEY, S. (10550) LRE OPERATING, LLC 229961 ROEHL GAS UNIT NO. 1 1 YORKTOWN, NE. (EDWARDS) PIONEER NATURAL RES. USA, INC. 263858 ROGER 1R DREYER (VICKSBURG 3600) PREMIER MINERALS, INC. 191812 ROKOHL SLICK SAND GAS UNIT 1 KARON (SLICK) COLUMBUS ENERGY, LLC 002313 ROKOHL-TEAGUE 1 GOEBEL (9600) CONTINENTAL OPERATING CO. 251091 ROLLER 1 POEHLER (COOK MT.) NELSON, JAMES L. 156606 ROOKE 1 ROOKE (FRIO 8660) REPUBLIC RESOURCES, LLC. 219281 ROOKE 1 WOODSBORO, WEST (FRIO 6600) COASTAL PLAINS EXPLORATION, LLC 257889 ROOKE 7 LA ROSA (6750, ABOVE, GAS) BLUE WING ENERGY, INC. 211808 ROOKE SOUTH M 01 LA ROSA (6750, BELOW, GAS) REMORA MANAGEMENT, LLC 266001 ROOKE, B. D. 1A LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 170056 ROOKE, B. D. C 3 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 170076 ROOKE, B. D. C 6 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 177969 ROOKE, B. D. C 8 LA ROSA (6750, ABOVE, GAS) REMORA MANAGEMENT, LLC 190662 ROOKE, P. H. 15 REFUGIO, NEW (3220) 38 OIL & GAS, L.L.C. 063675 ROOKE, P. H. 16 REFUGIO NEW (1100) 38 OIL & GAS, L.L.C. 150985 ROOKE, P. H. 17 REFUGIO, NEW (2450) 38 OIL & GAS, L.L.C. 147018 ROOKE, P. H. 24 REFUGIO NEW (3600) 38 OIL & GAS, L.L.C. 220070 ROOKE, P. H. 43 REFUGIO NEW (1900) 38 OIL & GAS, L.L.C. 142788 ROOKE, P. H. 47 REFUGIO NEW (1900) 38 OIL & GAS, L.L.C. 052529 ROOKE, P. H. 48 REFUGIO NEW (2000) 38 OIL & GAS, L.L.C. 221412 ROOKE, P. H. 62 REFUGIO NEW (1450) 38 OIL & GAS, L.L.C. 064959 ROOKE, P.H. 21 REFUGIO NEW (1900) 38 OIL & GAS, L.L.C. 126381 ROOKE, P.H. 60 REFUGIO NEW (4850) 38 OIL & GAS, L.L.C. 152490 ROOS 33 PLACEDO, W. (5420) PEGASUS OPERATING, INC. 115590 ROOS 36 PLACEDO (4000 CATAHOULA) PEGASUS OPERATING, INC. 149303 ROOS 45 PLACEDO (4000 CATAHOULA) PEGASUS OPERATING, INC. 239395 ROOS 49 PLACEDO (6100 FRIO) PEGASUS OPERATING, INC. 119996


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ ROSE ETAL UNIT 1 CARMICHAEL (3750) ZACHRY EXPLORATION, LLC 254325 ROSE FAMILY, ET. AL. 1 EL TORO MAX (AY-3) ALTA MESA SERVICES, LP 235993 ROSE-SAMPLE 1 EL TORO MAX (AY-3) ALTA MESA SERVICES, LP 245565 ROSENBAUM, O.&R. 1 A TYNAN (1300) GULF SANDS OIL CO. 104352 ROSS GAS UNIT 1 GANADO (S-4) KD ENERGY, LLC 047144 ROSS GAS UNIT 3 GANADO (3800) KD ENERGY, LLC 001647 ROSS GAS UNIT (AT4) 10 GANADO (F- 4-C SEG 2) KD ENERGY, LLC 219615 ROSS, H. (GU) 9 GANADO (3700) KD ENERGY, LLC 179103 ROSS, HANNA 8 GANADO (5270) KD ENERGY, LLC 056775 ROTH, ROSA ET AL 1 TULETA, WEST (SLICK-WILCOX 7500) CANNAN, MORRIS 004512 ROUDON 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 188866 ROUDON A 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 220796 ROUDON RANCH 1 KAREN BEAUCHAMP (2600) RICARDO OIL & GAS INC. 211712 ROUSE, FAY 1 PROVIDENT CITY (WILCOX 9,000) FIELDWOOD ONSHORE LLC 003834 ROUSE, FAY 2 PROVIDENT CITY (WILCOX 9,000) FIELDWOOD ONSHORE LLC 003835 ROUSE, FAY 4 PROVIDENT CITY (WILCOX 12,100) FIELDWOOD ONSHORE LLC 169799 ROUSE, FAY 5 PROVIDENT CITY (FRIO 3410) FIELDWOOD ONSHORE LLC 199094 ROVONNA 1 COOK, S. (FRIO 2700) RILEY EXPLORATION OPG CO, LLC 209669 ROY ESSE 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 259888 ROYAL 1 TYNAN, EAST (FRIO 4800) GREAT TEXAS CRUDE INC. 167058 ROYAL 2 TYNAN (3600) GREAT TEXAS CRUDE INC. 173189 ROYAL UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266821 ROYAL UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266836 RUBEN SAENZ 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268523 RUBOTTOM 1 RAY (VICKSBURG-HOCKLEY) SYDSON ENERGY, INC. 265661 RUCKMAN MONITOR WELL 1 EAGLEVILLE (EAGLE FORD-2) BURLINGTON RESOURCES O & G CO LP 262720 RUEBUSH 1 NEIGHBORHOOD (LOWER WILCOX) YOUNG, JOHN H., INC. 240422 RUHMANN UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266279 RUNGE TOWN SITE GAS UNIT 1 1 DE WITT (EAGLE FORD SHALE) STATOIL TEXAS ONSHORE PROP LLC 266145 RUPPERT GAS UNIT 1 1 KAWITT (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 244788 RUPPERT GAS UNIT 1 A 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 269838 RUSCHHAUPT 2 HELEN GOHLKE, SW. (WILCOX) G E OPERATING, INC. 144055 RUSCHHAUPT GAS UNIT 1 BULLOCK'S CHURCH, S. (10,000) XOG OPERATING LLC 176759 RUSCHHAUPT, W. H. JR. -A- 1 MEYERSVILLE, EAST (8225) MARWELL PETROLEUM LTD PARTNRSHIP 047992 RUSH, D.M. 1 BULLOCK'S CHURCH, S. (10,000) HURD ENTERPRISES, LTD. 256844 RUTH CARSON 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266590 RUTH UNITAS UNIT 2 GEORGE WEST, EAST (QUEEN CITY) FAULCONER, VERNON E., INC. 213259 RYALS 1 REFUGIO HEARD (5600) ACOCK/ANAQUA OPERATING CO., LP 255828 RYALS -A- 2 REFUGIO OLD (6300) EMERALD OIL & GAS LC 003967 RYALS ESTATE P 7M REFUGIO OLD BAYOU COMPANY, THE 123775 RYALS ESTATE -P- 5 REFUGIO OLD (5600) EMERALD OIL & GAS LC 037001 RYALS, JOHN ESTATE -A- P 1 REFUGIO OLD BAYOU COMPANY, THE 106040 RYALS, N. J. 11 REFUGIO OLD (3400) STARRETT, C. E. 034434 RYALS, PEARSON EST. 1 REFUGIO OLD (V-3) EMERALD OIL & GAS LC 003957 RYALS, SHELLY 7 REFUGIO OLD (3400) WYRICK & HUGHES 003953 RYALS, SHELLY 8 REFUGIO OLD (2000) WYRICK & HUGHES 003947 RYAN 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269880 RYAN, NOLAN 1 CLAYTON (QUEEN CITY) AURORA RESOURCES CORPORATION 223841 RYAN, NOLAN 2 C CLAYTON (WILCOX 6875) AURORA RESOURCES CORPORATION 217553 RYAN, NOLAN 2 T CLAYTON (WILCOX 7250) AURORA RESOURCES CORPORATION 216801 S. T. 625-L 1 WILDCAT GREAT BAY OPERATIONS, LLC 265193


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ S. WALLIS UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 264987 S. WALLIS UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270872 S. WALLIS UNIT A 5 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270902 S. WALLIS UNIT A 7 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270869 S.T. 594-L (SE) UNIT 1 MATAGORDA BLK 594-L (2400) HALL-HOUSTON EXPL. II, L.P. 267961 S.T. 594-L (SE) UNIT 1 MATAGORDA BLK 594-L (2600) HALL-HOUSTON EXPL. II, L.P. 254937 S.T. 594-L (SE) UNIT 2 MATAGORDA BLK 594-L (2300) HALL-HOUSTON EXPL. II, L.P. 255237 SAGER 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 260235 SAGER, ALBERT H. 1 GUN POINT (WILCOX LOWER, GRAY) URBAN OIL & GAS GROUP, LLC 115578 SALINAS, J. 3 COLOGNE (4550 FRIO E. SEGMENT) BIG LAKE CORPORATION 133272 SALINAS, J. 6 COLOGNE (2870) BIG LAKE CORPORATION 196194 SALINAS, J. 7 COLOGNE (1400) BIG LAKE CORPORATION 203116 SALINAS, J. 10 COLOGNE (4000) BIG LAKE CORPORATION 200761 SALINAS, J. 10 T COLOGNE (4100) BIG LAKE CORPORATION 200767 SALINAS, J. 14 COLOGNE (4040) BIG LAKE CORPORATION 220607 SALYER "A" 1 MAETZE (3030) SALYER, MONTE C. 103917 SALYER-SHERMAN UNIT 1ST AUSTIN (NITA) SIANA OIL & GAS 245521 SAMPLES 1 YOAKUM (LOWER WILCOX) UNIT PETROLEUM COMPANY 211477 SAMSEL (WILCOX 9950') GAS UNIT 1 MALO DOMINGO (WILCOX 9950) DUNE OPERATING COMPANY 262191 SAN CHRISTOVAL RANCH UNIT 'C' 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 265821 SAN CHRISTOVAL RANCH UNIT 'C' 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 265822 SAN CHRISTOVAL RANCH UNIT "A" 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 265421 SAN CHRISTOVAL RANCH UNIT E 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271496 SAN CHRISTOVAL RANCH UNIT E 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271733 SAN CHRISTOVAL RANCH UNIT E 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271497 SAN CHRISTOVAL RANCH UNIT E 4H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271810 SAN CHRISTOVAL RANCH UNIT F 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271599 SAN CHRISTOVAL RANCH UNIT F 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271671 SAN CHRISTOVAL RANCH UNIT F 3H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271672 SAN CHRISTOVAL RANCH UNIT G 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271494 SAN CHRISTOVAL RANCH UNIT G 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 271228 SANDHOP 1 WITTE (LF-123) KRAM ENERGY 207505 SANGER ESTATE 7 MOUNTAIN VIEW (WILCOX 10400) WAGNER OIL COMPANY 159451 SANGER HEIRS 1 CLOETER (1700) ANDERSON PETRO-EQUIPMENT, INC. 135248 SANGER HEIRS 1 CLOETER (7300) ANDERSON PETRO-EQUIPMENT, INC. 100913 SANGER HEIRS 1 SOUTH MOUNTAIN VIEW (SLICK A) KIDD PRODUCTION CO. 276006 SANGER HEIRS 1 SOUTH MOUNTAIN VIEW (LULING L-4) BRANDER, SAM H. 266045 SANGER HEIRS 1 C SIERRA VISTA (SLICK A) MIDSTATES CORPORATION 043312 SANGER HEIRS 1 T SIERRA VISTA (SLICK B) MIDSTATES CORPORATION 043313 SANGER HEIRS 2 CLOETER (1700) ANDERSON PETRO-EQUIPMENT, INC. 104027 SANGER HEIRS 7 SIERRA VISTA (SLICK A) MIDSTATES CORPORATION 077285 SANGER HEIRS 391 1 SANGER, SOUTH (2ND TOM LYNE) BLUEBONNET OIL & GAS 110561 SANGER HEIRS 391 2 SANGER, SOUTH (2ND TOM LYNE) BLUEBONNET OIL & GAS 175634 SANGER HEIRS 391 3 DIAMOND T (2800) BLUEBONNET OIL & GAS 112643 SANGER HEIRS 391 4LT SANGER, SOUTH (2ND TOM LYNE) BLUEBONNET OIL & GAS 116097 SANGER HEIRS 391 4UT DIAMOND T (1ST. TOM LYNE) BLUEBONNET OIL & GAS 119951 SANGER HEIRS 392 1LT SANGER, SOUTH (2ND TOM LYNE) BLUEBONNET OIL & GAS 114492 SANGER HEIRS 392 1UT DIAMOND T (1ST. TOM LYNE) BLUEBONNET OIL & GAS 118975 SANGER HEIRS 392 "A" 2 WILDCAT ENERGY 2000, INC. 170011 SAPPINGTON FARMS 1 LA SALLE (6110) MAMEROW ENERGY CORP 255242 SARTWELLE 1 APPLING, SOUTHEAST (MELBOURNE) MIRAMAR PETROLEUM, INC. 276410


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SARTWELLE 7 CRANDALL RUBIE (MAGNOLIA) BLUESTONE NATURAL RES. II, LLC 265068 SARTWELLE F & Y UNIT 1 SPEAKS, SW. (2500) GREAT TEXAS CRUDE INC. 216214 SASSER 6 MEDIO CREEK (4380) MEGO RESOURCES, LLC 263059 SAUNDERS UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270216 SAUNDERS UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 270236 SAUNDERS UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 269197 SAUNDERS UNIT B 1MW DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268844 SAUNDERS UNIT B 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268989 SAUNDERS UNIT B 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 269017 SCANIO / SHELTON 6 MISSION RIVER (8300 VKSBG) HIGH PLAINS GAS SYSTEMS, INC. 223050 SCANIO SHELTON 3 MISSION RIVER (6100) ACOCK/ANAQUA OPERATING CO., LP 252998 SCANIO SHELTON 5 MISSION RIVER (6400) ACOCK/ANAQUA OPERATING CO., LP 222184 SCANIO-HAWN 1 MISSION RIVER (8400) HIGH PLAINS GAS SYSTEMS, INC. 235535 SCANIO-SHELTON 2 MISSION RIVER (6300) ACOCK/ANAQUA OPERATING CO., LP 205677 SCANIO/ SHELTON 7 MISSION RIVER (8200) HIGH PLAINS GAS SYSTEMS, INC. 254386 SCANIO/SHELTON 1 MISSION RIVER (5800) ACOCK/ANAQUA OPERATING CO., LP 208522 SCANIO/SHELTON 2 MISSION RIVER (6200) HIGH PLAINS GAS SYSTEMS, INC. 207036 SCANIO/SHELTON 3 MISSION RIVER (6300) HIGH PLAINS GAS SYSTEMS, INC. 205432 SCANIO/SHELTON 4 MISSION RIVER ACOCK/ANAQUA OPERATING CO., LP 212390 SCANIO/SHELTON 4 MISSION RIVER (4200) HIGH PLAINS GAS SYSTEMS, INC. 234536 SCANIO/SHELTON 4 MISSION RIVER (6400) HIGH PLAINS GAS SYSTEMS, INC. 207859 SCANIO/SHELTON 5 MISSION RIVER (5800) HIGH PLAINS GAS SYSTEMS, INC. 226852 SCANIO/SHELTON 7 MISSION RIVER (8400) HIGH PLAINS GAS SYSTEMS, INC. 221611 SCANIO/SHELTON 8 MISSION RIVER (8400) HIGH PLAINS GAS SYSTEMS, INC. 234544 SCANIO/SHELTON 10 MISSION RIVER (7200) HIGH PLAINS GAS SYSTEMS, INC. 243787 SCANIO/SHELTON 11 MISSION RIVER (8400) HIGH PLAINS GAS SYSTEMS, INC. 250577 SCANIO/SHELTON 12 MISSION RIVER (8300 VKSBG) HIGH PLAINS GAS SYSTEMS, INC. 241967 SCANIO/SHELTON 13 MISSION RIVER (6000) HIGH PLAINS GAS SYSTEMS, INC. 272900 SCANIO, M 6 TOM OCONNOR (7930) ACOCK/ANAQUA OPERATING CO., LP 198456 SCANIO, M "B" 1 REFUGIO-FOX (4900) ACOCK/ANAQUA OPERATING CO., LP 114263 SCANIO, M. 2D REFUGIO-FOX (KWA SAND) ACOCK/ANAQUA OPERATING CO., LP 189411 SCANIO, MIGUELITA 2 REFUGIO-FOX (6300 A) ACOCK/ANAQUA OPERATING CO., LP 132936 SCANIO, MIGUELITA 4 REFUGIO-FOX (6220) ACOCK/ANAQUA OPERATING CO., LP 185226 SCANIO, MIGUELITA 8 REFUGIO-FOX (6100) ACOCK/ANAQUA OPERATING CO., LP 200166 SCANIO, MIGUELITA 10 REFUGIO-FOX (6600) ACOCK/ANAQUA OPERATING CO., LP 207964 SCANIO, MIGUELITA 16 REFUGIO-FOX (6750) ACOCK/ANAQUA OPERATING CO., LP 233636 SCANIO, MIGUELITA 18 REFUGIO OLD (6550 FRIO) ACOCK/ANAQUA OPERATING CO., LP 234584 SCHAEFER, E. C. 1 U COTTONWOOD CREEK, S. (MACKHANK) MAGNUM PRODUCING, LP 042458 SCHAEFER, E. C. 5 COTTONWOOD CREEK, S (FRIO 2800) MAGNUM PRODUCING, LP 145447 SCHEEL, ANNIE 1 HARMON, SOUTH (6400) GEMARMI INC. 213979 SCHEINEMAN, J. A. ESTATE 1 HALLETTSVILLE, SOUTH (ANDERSON) VALENCE OPERATING COMPANY 074491 SCHEINEMAN, J. A. ESTATE 2 MONT (WILCOX 10640) VALENCE OPERATING COMPANY 250787 SCHENDEL 1 SAINT ARMO (MACKHANK) VENTEX OPERATING CORP. 207971 SCHENDEL 2 HERNDON (3000 FRIO) VENTEX OPERATING CORP. 220922 SCHENDEL A 1 A SAINT ARMO (MACKHANK) VENTEX OPERATING CORP. 220090 SCHENDEL A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264794 SCHENDEL A 2 SAINT ARMO (MACKHANK) VENTEX OPERATING CORP. 222473 SCHENDEL A 2 SAINT ARMO (WILCOX, LOWER STEVE) VENTEX OPERATING CORP. 255165 SCHENDEL UNIT A G 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259783 SCHENDEL UNIT A G 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270247 SCHENDEL UNIT A 189 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266838


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SCHENDEL UNIT A-189 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259776 SCHENDEL 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266591 SCHENDEL 02 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266599 SCHENDEL 02 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268512 SCHENDEL 02 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 270128 SCHENDEL 02 04H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269688 SCHENDEL 02 05H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271847 SCHENDEL 02 06H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 272093 SCHENDEL 02 07H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 272127 SCHENDEL 02 08H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 276209 SCHENDEL 02 09H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 274640 SCHENDEL 02 11H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 274641 SCHENDEL 02 12H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 274642 SCHERER 1 TELFERNER (2500) HOLLIMON OIL CORPORATION 209725 SCHERER 1 WAYSIDE CHAPEL (YEGUA) PPC OPERATING COMPANY LLC 269578 SCHERER 2 WAYSIDE CHAPEL (YEGUA) AURORA RESOURCES CORPORATION 275527 SCHILHAB 1 SECLUSION (COCKFIELD 6100) GARRISON LTD. 229727 SCHILHAB 1 C WAYSIDE (FRIO 3200) XTO ENERGY INC. 221373 SCHILHAB 1 T SECLUSION (COCKFIELD 6100) XTO ENERGY INC. 138947 SCHINDLER 1 INEZ (FRIO 5200) GEONATURAL RESOURCES, INC. 192216 SCHINDLER ET AL GAS UNIT 1 ROSS WELLS (MIOCENE) OSYKA PRODUCING COMPANY, INC. 163772 SCHINDLER ET AL GAS UNIT 2 ROSS WELLS (MIOCENE) OSYKA PRODUCING COMPANY, INC. 172635 SCHINDLER ET AL GAS UNIT 3 ROSS WELLS (MIOCENE) OSYKA PRODUCING COMPANY, INC. 177174 SCHINDLER, GILBERT 2 MONT (WILCOX 10640) TRIO CONSULTING & MANAGEMENT,LLC 267345 SCHIRMER 20 LA ROSA (6750, ABOVE, GAS) CHRISTOPHER OIL & GAS INC 240933 SCHIRMER "C-120" 1 BONNIE VIEW (5300) CHRISTOPHER OIL & GAS INC 169259 SCHIRMER C-120 3 BONNIE VIEW (5700) CHRISTOPHER OIL & GAS INC 272659 SCHIRMER-BUCK UNIT 1 BONNIE VIEW (5500) CHRISTOPHER OIL & GAS INC 184604 SCHIRMER, HENRY 12 BONNIE VIEW (5600) CHRISTOPHER OIL & GAS INC 193180 SCHIRMER, HENRY 22 BONNIE VIEW (5700) CHRISTOPHER OIL & GAS INC 274973 SCHLOSSER UNIT 1 NORDHEIM (WILCOX 10600) ELAND ENERGY, INC. 061382 SCHMELTZER 1 COLOGNE (3890) AMPAK OIL COMPANY 181884 SCHMELTZER-JOHN UNIT "A" 2 COLOGNE (4300) AMPAK OIL COMPANY 202557 SCHMELTZER-JOHNS UNIT 1 COLETTO CREEK (1400 MIOCENE) AMPAK OIL COMPANY 139246 SCHMIDT FAMILY 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266034 SCHMIDT FAMILY 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 270360 SCHMIDT FAMILY 02 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268944 SCHMIDT GAS UNIT 1 ALBRECHT CREEK (WILCOX 9780) HUNT OIL COMPANY 238237 SCHORLEMER 02 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268709 SCHORLEMER 02 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268515 SCHORLEMER 02 03H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268710 SCHORLEMER 02 04H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 276089 SCHORLEMER 02 05H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 272520 SCHORLEMER 02 06H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 273162 SCHORLEMER 02 07H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 272473 SCHORRE UNIT 2 COOK, S. (WILCOX, LO. 10,850) A.O.E. OPERATORS, INC. 207871 SCHOVAJSA, E. H. 13 PLACEDO, EAST (4700) PEGASUS OPERATING, INC. 156621 SCHRADE UNIT 1ST CAESAR, SOUTH (WILCOX 9770) HUGHES, DAN A. COMPANY, L.P. 193060 SCHRADE-DAHL G.U. 2 CAESAR, SOUTH (WILCOX 9770) HUGHES, DAN A. COMPANY, L.P. 195635 SCHRADE-DAHL UNIT 1ST CAESAR, SOUTH (WILCOX 10450) HUGHES, DAN A. COMPANY, L.P. 189912 SCHREINER K. W. 4 TOM LYNE, N. (WILCOX 9350) WAGNER OIL COMPANY 155029


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SCHREINER RANCH TRUST II 2 OAKVILLE (WILCOX CONS.) SANDEL OPERATING COMPANY 144885 SCHREINER RANCH TRUST II 3 OAKVILLE (WILCOX CONS.) SANDEL OPERATING COMPANY 144503 SCHREINER RANCH TRUST II 5 OAKVILLE (WILCOX CONS.) SANDEL OPERATING COMPANY 141656 SCHREINER RANCH TRUST II 6 OAKVILLE (WILCOX CONS.) SANDEL OPERATING COMPANY 234406 SCHREINER RANCH TRUST II 9 LIMES (WILCOX F-2) SANDEL OPERATING COMPANY 161355 SCHREINER, K. W. 2-U TOM LYNE, N. (WILCOX 9350) WAGNER OIL COMPANY 150982 SCHREINER, K. W. F 2L TOM LYNE, N. (WILCOX 10,250) WAGNER OIL COMPANY 157505 SCHREINER, K.W. 1 TOM LYNE, N. (WILCOX 10,000) WAGNER OIL COMPANY 130181 SCHROEDER 4 PAWNEE (WILCOX) PIONEER NATURAL RES. USA, INC. 256901 SCHROEDER A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 268026 SCHROEDER G. U. 3 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 212872 SCHROEDER GAS UNIT 1 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 197341 SCHROEDER GAS UNIT 2 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 212327 SCHROEDER GU 5 PAWNEE (WILCOX) PIONEER NATURAL RES. USA, INC. 266706 SCHROEDER 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 264855 SCHROEDER 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268775 SCHUECH, IRMA "B" 2 TW (FRIO 5830) CONS ASSET MGMT SVCS E&P OP, LLC 152485 SCHULLE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266686 SCHULTE 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 260390 SCHULTE 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272316 SCHULTHEISS GAS UNIT 1 HELEN GOHLKE (WILCOX, LO. B) RINCON PETROLEUM CORPORATION 231075 SCHULTZ, L. P. 4 HEYSER (3900) MCGOWAN WORKING PARTNERS, INC. 077414 SCHULTZ, L. P. 7 HEYSER (4400) MCGOWAN WORKING PARTNERS, INC. 046613 SCHULTZ, L. P. 10 HEYSER (4300) MCGOWAN WORKING PARTNERS, INC. 002091 SCHULTZ, L.P. 3 HEYSER (4400) C.W. PICKERING, INC. 150593 SCHULTZE 1 L CADENCE RELIANCE (WILCOX) RELIANCE ENERGY, INC. 202627 SCHULTZE 1 U CHARCO, SE. (WILCOX 9600) RELIANCE ENERGY, INC. 213663 SCHULTZE 2 CHARCO, S. (WILCOX 9300) RELIANCE ENERGY, INC. 219610 SCHULZ 1 SCHULZ (EDWARDS) BROWNING, LANDON 080573 SCHULZ 3H THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 169011 SCHULZ ESTATE 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268802 SCHULZ ESTATE 02 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268836 SCHULZ FAMILY 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 270399 SCHULZ TRUST 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269686 SCHULZ UNIT 2H THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 165379 SCHULZ 2-H GAS UNIT 3 THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 231500 SCHULZ 3-H GAS UNIT 2 THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 232515 SCHULZ, H. 4H THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 172420 SCHULZ, H. J. 5H THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 173072 SCHULZ, HARRY 3 THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 234600 SCHULZ, J. GERALD 1 SCHULZ (EDWARDS) BROWNING, LANDON 086339 SCOTT 1 MCCASKILL (LOWER WILCOX) SCS OPERATING COMPANY, LLC 192557 SCOTT 1 THOMASTON (WILCOX 7800) CAMOIL, INC. 192653 SCOTT 1 THOMASTON (WILCOX 8750) CAMOIL, INC. 188206 SCOTT 2 MCCASKILL (LOWER WILCOX) SCS OPERATING COMPANY, LLC 194120 SCOTT 3 MCCASKILL (LOWER WILCOX) UNIVERSAL GEOPOWER LLC 207420 SCOTT 3 NORMANNA, S. (2050) MCGUFFIN, JOE S. INC. 074975 SCOTT RANCH 1A NORMANNA, S. (2050) DISCOVERY PETROLEUM, L.L.C. 110596 SCR UNIT "B" (ALLOCATION) 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 264869 SEA BISCUIT 1 MAYO (3575) XPLORE OPERATING, LLC 259149 SEALE 1 FRIENDSHIP CHURCH (3700) ENCO EXPLORATION COMPANY 264798


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SEALE 5 NORBEE (3400) ENCO EXPLORATION COMPANY 262184 SEALE, D. W. C 1 PLUMMER (HOCKLEY 2480) PROGAS PROPERTIES, INC. 136824 SEALE, SAM D. 1 SWAN LAKE (6000) ACOCK/ANAQUA OPERATING CO., LP 184359 SEALE, SAM D. 4 SWAN LAKE, N. (5925) ACOCK/ANAQUA OPERATING CO., LP 123230 SEALE, SAM D. III 1 WILDCAT ACOCK/ANAQUA OPERATING CO., LP 163237 SEALE, SAM D. III 4 SWAN LAKE (5900) ACOCK/ANAQUA OPERATING CO., LP 164214 SEE 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 208005 SEE 2 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 226755 SEIDEL UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266770 SEIDEL UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 272311 SEIDEL UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 272312 SEIDEL UNIT A 4 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 272313 SEIDEL UNIT A 5 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 272314 SEIFERT, EDWARD H. ET UX 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 193281 SEIFFERT 3 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 206438 SEILER GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 259557 SEILER, FRIEDA 1 ARNECKEVILLE, S. (Y-6) MARWELL PETROLEUM LTD PARTNRSHIP 111262 SEIM, AGNES 1 YORKTOWN, N (EDWARDS 13850) CIMROD, LLC 233244 SELLS , W. M. HEIRS 1 APPLING (SEG 1 7500) CORUM PRODUCTION COMPANY 000660 SELLS, KATHERINE MAUDE 1 APPLING, N. (MELBOURNE, UPPER) CORUM PRODUCTION COMPANY 173264 SELLS, KATHERINE MAUDE 1 APPLING, N. (8000) CORUM PRODUCTION COMPANY 205602 SELLS, KATHERINE MAUDE 2 APPLING, N. (MELBOURNE, LOWER) CORUM PRODUCTION COMPANY 059206 SELLS, KATHERINE MAUDE 4 APPLING, N. (8000) CORUM PRODUCTION COMPANY 135557 SFS UNIT 16 1H EAGLEVILLE (EAGLE FORD-2) BHP BILLITON PET(TXLA OP) CO 271121 SHARONLEE (SWD) 1 SHARONLEE (SLIGO) WAGNER OIL COMPANY 127105 SHARP, HARRY F. 1 H. THOMAS (CATAHOULA 2800) EAGLE ENERGY DEVELOPMENT CO 137773 SHAW SMITH 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 261075 SHAW/RAY 1 JOE FINGER (CATAHOULA) OSYKA OIL & GAS, INC. 172006 SHAW/RAY 02 JOE FINGER (CATAHOULA) DRILL-CO., INC. 192631 SHAW, JOHN 1 SAN DOMINGO, S. (1250) OSYKA OIL & GAS, INC. 151505 SHAW, JOHN B. B 4 SAN DOMINGO, S. (FRIO L) ADJ COMPANY 097231 SHAY 1 PHIL POWER (5050 FRIO) GULF COAST OPER. & ENG., INC. 129633 SHAY 1 REFUGIO OLD (6550 FRIO) ACOCK/ANAQUA OPERATING CO., LP 221898 SHAY 2 CIRCLE -A- (5100) CHARRO OPERATING, L.L.C. 221743 SHAY 'B' 2 PHIL POWER (4870) HILCORP ENERGY COMPANY 272318 SHAY "D" 5 PHIL POWER (4870) HILCORP ENERGY COMPANY 167853 SHAY TRACT 3 3 TEJAS (FRIO 5000) CHARRO OPERATING, L.L.C. 228737 SHAY, WALLACE 1 CLARKSON (FRIO 4450) BAYOU COMPANY, THE 102931 SHEFCIK ET AL GAS UNIT 1 BRUSHY CREEK (WILCOX CONS.) GCER ONSHORE, LLC 219751 SHEFCIK ET AL GAS UNIT 2 BRUSHY CREEK (WILCOX CONS.) GCER ONSHORE, LLC 262186 SHEFCIK ET AL GAS UNIT 3 BRUSHY CREEK (WILCOX CONS.) GCER ONSHORE, LLC 220084 SHEIVES, A. L. 3 NORMANNA (CONSOLIDATED) ALAMO OPERATING COMPANY, L. C. 229143 SHELLY 1 REFUGIO OLD OMELVENY, J. M., PROD. CO. 003938 SHELLY GRIFFITH A 2 PAPALOTE, W. (GRIFFITH RANCH) LEGACY EXPLORATION, INC. 137843 SHELLY, T. P. 7 REFUGIO HEARD (4600) WYRICK & HUGHES 003914 SHELTON 5 LAKE PASTURE (FT-690) KEBO OIL & GAS, INC. 233811 SHELTON 7 LAKE PASTURE (FT-660) KEBO OIL & GAS, INC. 257928 SHELTON 9 LAKE PASTURE (E-223) KEBO OIL & GAS, INC. 262157 SHELTON 11 WILDCAT KEBO OIL & GAS, INC. 265952 SHELTON 16 LAKE PASTURE (FT-585) KEBO OIL & GAS, INC. 276406 SHELTON HEIRS 3 PLACEDO, EAST (6200 SAND) ACOCK/ANAQUA OPERATING CO., LP 217369


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SHELTON-WEST UNIT "B" 1 PALO ALTO (6150) CREST PETROLEUM, LLC 162822 SHELTON/HEIRS 2 PLACEDO (5200) ACOCK/ANAQUA OPERATING CO., LP 247720 SHELTON, BEN 10 BEN SHELTON (7350) ALEGRE ENERGY, INC. 177912 SHELTON, BEN 11 BEN SHELTON (6400) ALEGRE ENERGY, INC. 194133 SHELTON, BEN -A- 1 PLACEDO, EAST (6000, STRAY) ACOCK/ANAQUA OPERATING CO., LP 188445 SHELTON, BEN -A- 2 BEN SHELTON (6650) ACOCK/ANAQUA OPERATING CO., LP 170666 SHELTON, BEN -A- 4 PLACEDO, EAST (5600 SD.) ACOCK/ANAQUA OPERATING CO., LP 177973 SHELTON, J. ISABELLA B 3 MISSION RIVER (6000) ACOCK/ANAQUA OPERATING CO., LP 190357 SHELTON, J. ISABELLA B 11 MISSION RIVER (5800) ACOCK/ANAQUA OPERATING CO., LP 059027 SHELTON, J. ISABELLA -D- B 2 MISSION RIVER (6100) HIGH PLAINS GAS SYSTEMS, INC. 187985 SHELTON, NANCY 2 PLACEDO (6050) PEGASUS OPERATING, INC. 176044 SHEPPARD A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264158 SHEPPARD GAS UNIT 2 BUCHEL (EDWARDS) PIONEER NATURAL RES. USA, INC. 148430 SHINER 1 HALLETTSVILLE, S. (YEGUA 3650) LGDC CORPORATION 245905 SHINN GAS UNIT 1 TULETA (CATAHOULA "A" 1230) SHINN RANCH 134424 SHOFNER, W. A. 1 SHERIFF (F-3) FORMATION RESOURCES LLC 033750 SHOFNER, W. A. 3 SHERIFF (F-1) FORMATION RESOURCES LLC 044475 SHOFNER, W. A. 9 SHERIFF (F-2) FORMATION RESOURCES LLC 033748 SHOFNER, W. A. 13 SHERIFF (F-2) FORMATION RESOURCES LLC 134155 SHOFNER, W.A. 2 SHERIFF (CONSOLIDATED) FORMATION RESOURCES LLC 151889 SIBLEY 1 SALEM, EAST (2400) INLAND OCEAN, INC. 254598 SIBLEY ESTATE 4 ESPERANZA (DAGG) XTO ENERGY INC. 274577 SIBLEY ESTATE 5 ESPERANZA (12000 SAND) XTO ENERGY INC. 175323 SIBLEY ESTATE 6 ESPERANZA (YEGUA) XTO ENERGY INC. 175908 SIBLEY ESTATE 8 ESPERANZA (DAGG) XTO ENERGY INC. 177228 SIBLEY ESTATE 8 ESPERANZA (10560) XTO ENERGY INC. 272583 SIBLEY ESTATE 10 WILDCAT XTO ENERGY INC. 181632 SIBLEY ESTATE 11 ESPERANZA (WILCOX 7800) XTO ENERGY INC. 269091 SIENKIEWICS UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 262109 SIENKIEWICZ UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 268782 SIENKIEWICZ UNIT 6H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 266858 SIEVERS 1 L CEDAR BRUSH (3RD MASSIVE WILCOX) BEACH OIL & GAS, INC. 132550 SIEVERS 1 U CEDAR BRUSH (WILCOX) BEACH OIL & GAS, INC. 132573 SIEVERS 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 261037 SIEVERS 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268942 SIEVERS, ALVIN F. 1 BELITZ (9000 WILCOX) BETTIS, BOYLE & STOVALL 128481 SIEVERS, EDWALD ET AL 1 HOLLY (YEGUA 4600 UP.) WILSON HYDROCARBON INC. 062039 SIEVERS, EDWALD ET AL 3 C HOLLY (VICKSBURG 3900) WILSON HYDROCARBON INC. 078999 SIEVERS, EDWALD ET AL 3 T HOLLY (COOK MOUNTAIN 5150) WILSON HYDROCARBON INC. 078998 SILLIMAN GAS UNIT 1 C GANADO (3700 -A-) KD ENERGY, LLC 001644 SILLIMAN GAS UNIT 1 T GANADO (4000) KD ENERGY, LLC 001653 SILLIMAN GAS UNIT 5 GANADO, DEEP (5650) KD ENERGY, LLC 236787 SILLIMAN GAS UNIT 12 H GANADO (3800) KD ENERGY, LLC 254064 SILLIMAN GAS UNIT 14 GANADO (FRIO 5550) KD ENERGY, LLC 248396 SILLIMAN GAS UNIT 15 GANADO (5270) KD ENERGY, LLC 162199 SIMEK-COOK UNIT 1 YOAKUM (WILCOX 7300) ABRAXAS PETROLEUM CORPORATION 221061 SIMMONS GAS UNIT 1 AUSTIN (NITA) XTO ENERGY INC. 169091 SIMMONS GAS UNIT 1-L AUSTIN (WILCOX MASSIVE E) XTO ENERGY INC. 185204 SIMMONS GAS UNIT 1-U AUSTIN (WILCOX MASSIVE) XTO ENERGY INC. 174752 SIMMONS GAS UNIT 2 AUSTIN (WILCOX MASSIVE E) XTO ENERGY INC. 185198 SIMMONS GAS UNIT 4-L AUSTIN (WILCOX MASSIVE E) XTO ENERGY INC. 182772


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SIMMONS GAS UNIT 4-U AUSTIN (WILCOX MASSIVE) XTO ENERGY INC. 182490 SIMMONS GAS UNIT 5 L AUSTIN (WILCOX MASSIVE E) XTO ENERGY INC. 198686 SIMMONS GAS UNIT 5-L AUSTIN (WILCOX G-9TH AUSTIN) XTO ENERGY INC. 180294 SIMMONS GAS UNIT 5-U AUSTIN (WILCOX MASSIVE) XTO ENERGY INC. 180299 SIMMONS GAS UNIT 6 AUSTIN (WILCOX MASSIVE) SIANA OIL & GAS 228545 SIMMONS GAS UNIT 7 AUSTIN (WILCOX MASSIVE) XTO ENERGY INC. 237080 SIMMONS GAS UNIT 2 AUSTIN (WILCOX MASSIVE) XTO ENERGY INC. 200929 SIMMONS SUBDIVISION UNIT 1 SHARONLEE (SLIGO) NEWFIELD EXPLORATION COMPANY 254612 SIMMONS UNIT 1 WEESATCHE, NE. (LITTLE SAND) MILAGRO EXPLORATION, LLC 220875 SIMMONS, MRS. M. 1 ANAQUA MINN-TEX OIL CO. 000557 SIMONS 1 CARMICHAEL (2720) ALTA MESA SERVICES, LP 214391 SIMONS, M. K. 3 F TEXANA (6550) MCDANIEL, D. L. 034783 SIMONS, M. K. 3 I TEXANA (6450) MCDANIEL, D. L. 034836 SIMONS, T. K. 1 TEXANA, NORTH (5800) SEQUOIA FOSSIL FUELS, INC. 034930 SIMONS, T. K. 2 TEXANA, NORTH (5550) SEQUOIA FOSSIL FUELS, INC. 165416 SIMPSON 1 CHRISTMAS (12300) WINN EXPLORATION CO., INC. 245470 SIMPSON -G- 4 PRIDHAM LAKE, SOUTH (FRIO 4300) MANDARIN OIL & GAS COMPANY 116984 SINAST GAS UNIT 1 CHRISTMAS, DEEP (WILCOX 10400) LRE OPERATING, LLC 223862 SINAST GAS UNIT 2 WARMSLEY (VAUGHN) LRE OPERATING, LLC 255291 SINAST GAS UNIT 3 CHRISTMAS, SOUTH (GANSON) LRE OPERATING, LLC 230791 SINCLAIR HUNT 1 STRAUCH-WILCOX (SLICK 7900) WALLIS ENERGY, INC. 140098 SINOR RANCH 5 SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 254906 SINOR RANCH G. U. 2 THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 237240 SINOR RANCH G. U. 4 THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 238212 SINOR RANCH 01 06H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266603 SINOR RANCH 01 07H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266500 SINOR RANCH 01 08H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267764 SINOR RANCH 01 09H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267845 SINOR RANCH 02 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269191 SIPPEL 1 OAKVILLE (SLICK -A-) DEWBRE PETROLEUM CORPORATION 269203 SIPPEL 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266604 SISSON GAS UNIT 1 MISSION VALLEY, W.(WILCOX 10600) XTO ENERGY INC. 229832 SIXJAY 1 FRIAR RANCH, S. (CONSOLIDATED) PETROLEUM RESOURCE MANAGEMENT CO 124560 SJI 1 OAKVILLE (WILCOX CONS.) KEBO OIL & GAS, INC. 261786 SJOBERG 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 259885 SKAGGS BLOCK 84 1 CLAYTON (BLOCK 86 SD) HEDRICK PRODUCTION INC. 128170 SKALICKY, ET AL GAS UNIT 1 GANADO, DEEP (HULTQUIST NORTH) KD ENERGY, LLC 267660 SLAUGHTER GAS UNIT 1 1 SPEARY (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 254486 SLAUGHTER GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 270608 SLAUGHTER GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 269198 SLAUGHTER GAS UNIT 1 B 3H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 269011 SLAZENGER FRIO 1 MORALES (3260) BNP PETROLEUM CORPORATION 250785 SLICK SAND OIL UNIT 23 TULSITA-WILCOX MISSION RIVER SYSTEMS, INC. 225819 SLICK SAND OIL UNIT 24 TULSITA-WILCOX MISSION RIVER SYSTEMS, INC. 225825 SLONE B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 266748 SMAJSTRLA UNIT 1R WELDER RANCH (2950) CAMOIL, INC. 151159 SMITH 1 COLOGNE (4050) AMPAK OIL COMPANY 192835 SMITH GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 261021 SMITH GILL UNIT 1 SINGLETON, E. (WILSON) KEBO OIL & GAS, INC. 250401 SMITH-CAROTHERS 1 COLOGNE (4550) AMPAK OIL COMPANY 217485 SMITH, ALICE B. 1 L ARROYO ROJO (BURGHER) EXPRESS OIL CO. 112636


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SMITH, ALICE B. 1 U ARROYO ROJO (BALLARD) EXPRESS OIL CO. 112635 SMITH, ALICE B. 2 ARROYO ROJO (BALLARD) EXPRESS OIL CO. 138265 SMITH, JACK 1 WEESATCHE,WEST (HOLT SAND 10880) TEMA OIL AND GAS COMPANY 105753 SMITH, JACK 3 WEESATCHE, W. (JACKSON SD.) TRISTAR EXPLORATION, INC 188971 SMITH, M. E. 1 FREEMAN (PETTUS 4600) KOVAR OPERATING, LLC 188222 SMITH, M. L. M. 4 ANNA BARRE (-J-) MEGO RESOURCES, LLC 111795 SMITH, MARY LEE 1 AMADOR (MIOCENE 800) WALLIS ENERGY, INC. 093829 SMITH, SIDNEY 1 A BEEVILLE, NW. (HOCKLEY) TEXACAL, INC. 055637 SMITH, V. GAS UNIT 1 WORD (EDWARDS) CAPITAL STAR OIL & GAS, INC. 103566 SMITH, V. GAS UNIT 2 WORD (EDWARDS) CAPITAL STAR OIL & GAS, INC. 167836 SMITH, WILCOX VIRGINIA P. GU 1 WORD, N. (J-33) CAPITAL STAR OIL & GAS, INC. 145903 SMOLIK 2 WORD, N. (8500) TRIO CONSULTING & MANAGEMENT,LLC 245469 SMOLIK 'A' 3 WORD N. (9300) TRIO CONSULTING & MANAGEMENT,LLC 257124 SMOLIK 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267656 SMOLIK 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267747 SMOLIK 01 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267748 SMOLIK, ALBERT 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 101798 SMOLIK, ALBERT 2 WORD, N. (EDWARDS) WHITING OIL AND GAS CORPORATION 087460 SMOLIK, ALBERT 3 WORD, N. (EDWARDS) WHITING OIL AND GAS CORPORATION 096320 SMOLIK, ALBERT 4 WORD, N. (EDWARDS) WHITING OIL AND GAS CORPORATION 101678 SMOTHERS 1 RENGER (WILCOX 7900) CANTERA OPERATING, LLC 213290 SMOTHERS 2 MOOSE OIL & GAS (FRIO 2775) MOOSE OPERATING CO., INC. 170224 SMOTHERS 3 SPEAKS (3200) MOOSE OPERATING CO., INC. 174769 SMOTHERS 4 SPEAKS (2200) MOOSE OPERATING CO., INC. 170226 SOBOTIK, F. GAS UNIT #1 1 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 083971 SOBOTIK, F. GAS UNIT #1 2 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 088607 SOCONY MOBIL OIL COMPANY FEE 1 CLAYTON (BLOCK 86 SD) HEDRICK PRODUCTION INC. 107770 SOUTH GRISSOM 1 CAESAR, SOUTH (9600) TIDAL PETROLEUM, INC. 245520 SOUTH GRISSOM 1 COSDEN, WEST (WILCOX 9500) TIDAL PETROLEUM, INC. 259631 SOUTH TEXAS CHILDRENS HOME 1 MINERAL, NORTH (9750) WOFFORD, C. J. 101273 SOUTH TEXAS CHILDRENS HOME 2 MINERAL, NORTH (9850) WOFFORD, C. J. 138926 SOUTHERN STATES 1 SWINNEY SWITCH, EAST(YEGUA 6100) WELDER EXPLORATION & PROD., INC. 265526 SPACEK, FRANK 11 GANADO, WEST (5100) PREMIER NATURAL RESOURCES, LLC 158569 SPARKMAN, PORTER 1WI MINERAL, NORTH (9750) WOFFORD, C. J. 129066 SPARKMAN, R. L. 1 CLAY WEST (WILCOX LOWER) CIMAREX ENERGY CO. OF COLORADO 060928 SPEAR REYNOLDS UNIT A G 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 260033 SPEARY FAMILY TRUST UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268979 SPEARY GAS UNIT 1 SPEARY (ROEDER 9100) OKIE OPERATING COMPANY, LTD. 030566 SPECIAL 1 TYNAN, EAST (3100) GREAT TEXAS CRUDE INC. 178889 SPENCER 1 CORDELE, EAST (2700) JOHNSON, W. R. TRUSTEE 001393 SPIEKERMAN, E. J. 1 SLIVA (2800) NEW HORIZON INVESTMENTS LTD. 164694 SPIEKERMAN, H. F. 1 SLIVA (3600) NEW HORIZON INVESTMENTS LTD. 004152 SPIELHAGEN, B. U. 14 BURNELL (WILCOX 7800) TRINITY RIVER ENERGY OPER, LLC 186468 SPIELHAGEN, E. J. 1 COSDEN (WILCOX LULING 7200) UNION SULPHUR CO. 001416 SPIES, CLIFFORD F. G. U. #1 1 YORKTOWN, S (WILCOX 11100) MAGNUM PRODUCING, LP 053255 SPIES, CLIFFORD F. G. U. #1 2 YORKTOWN, S (WILCOX 11100) MAGNUM PRODUCING, LP 059225 SPIES, CLIFFORD F. G. U. #2 1 YORKTOWN, SOUTH (ROEDER) MAGNUM PRODUCING, LP 138470 SPILLER GAS UNIT 1R LONG MOTT, SOUTH (FRIO, UPPER) RAWHIDE OPERATING, INC. 166235 SPILLER, CLAUDIE 3 LONG MOTT, SOUTH (FRIO, LOWER) RAWHIDE OPERATING, INC. 059694 SPINDLETOP 2 NORMANNA (CONSOLIDATED) SPINDLETOP OIL & GAS COMPANY 220065 SPINDLETOP GAS UNIT 1 NORMANNA (CONSOLIDATED) GULFSTAR PROPERTIES, INC. 207222


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SPINN UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266841 SPINN UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271443 SPRADLEY, G. B. 1 RAMIRENA, N. (PETTUS) ELLIOTT OIL & GAS OPERATING CO. 050159 SPUR T GAS UNIT 2 KUESTER (WILCOX 8070) FINLEY RESOURCES, INC. 253882 ST. JOHN -A- 1 MARY ELLEN OCONNOR (4175) M. E. OPERATING 059983 ST. JOHNS HEIRS 1 WOODSBORO (BOENIG) M. E. OPERATING 041111 STACK, B. 2 LOLITA (MITCHELL ZONE) MCGOWAN WORKING PARTNERS, INC. 041834 STANCHOS UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268805 STANCHOS UNIT A 3 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266876 STANCHOS, VIOLA 'A' 1 WILDCAT SUNBURST, INC. 275737 STANCHOS, VIOLA "A" 1 RUNGE, E. (HACKNEY) PROEX ENERGY MANAGEMENT, L.L.C. 222452 STANFORD, FRED S. 1 L TORO GRANDE (FB-A, 9200 SD.) BARCO OIL & GAS CO. 126345 STANFORD, FRED S. 1 U TORO GRANDE (FB-B, 8800 YEGUA) BARCO OIL & GAS CO. 126346 STANGE 1 F COLLETOVILLE CREEK (MIOCENE 1100 CML EXPLORATION, LLC 223485 STANGE 1D COLLETOVILLE CREEK (CATAH. 2450) CML EXPLORATION, LLC 250559 STANLEY PAWLIK GAS UNIT 2 FANT (WILCOX 10000) OXY USA INC. 163882 STAPLES 1 TULETA, N (WILCOX 9200) SAXUM OIL & GAS, LLC 219857 STAPLES, J. JR. 1 TULETA (4400) SAXUM OIL & GAS, LLC 175984 STAPLES, J. JR. 2 TULETA (4400) SAXUM OIL & GAS, LLC 194719 STAPLES, J. JR. 3 TULETA, SOUTH (1250) SAXUM OIL & GAS, LLC 214165 STAPLES, J. JR. 4 TULETA, SOUTH (2050) SAXUM OIL & GAS, LLC 213988 STATE OF TEXAS TRACT 209 1 APPLING, N. (7550) RESERVE OPERATING CORP. 081846 STATE OF TEXAS 33724 5AU POWDERHORN (3) BEP OPERATING, LLC 151394 STATE OF TEXAS 33724 18 POWDERHORN (3) BEP OPERATING, LLC 219040 STATE OF TEXAS 33724 19 POWDERHORN (5200 SAND) BEP OPERATING, LLC 187388 STATE TRACT -210- 6 GRASS ISLAND (FARWELL -R-) LINC GULF COAST PETROLEUM, INC. 183621 STATE TRACT D 1 WILDCAT DAVIS GULF COAST, INC. 230291 STATE TRACT 10 1 PORT LAVACA, EAST (MARG.) NEUMIN PRODUCTION COMPANY 234218 STATE TRACT 100 1 MOSQUITO POINT, N. (FRIO F) LAMAR OIL & GAS, INC. 266396 STATE TRACT 105 11 MATAGORDA BAY (2100) HIGH ISLAND GAS LLC 150659 STATE TRACT 106, S/2 1 MATAGORDA BAY (2600) HIGH ISLAND GAS LLC 184227 STATE TRACT 141 1 SOUTHPAW (MIOCENE 6000) COASTLAND OPERATIONS, LLC 174711 STATE TRACT 150 2 MATAGORDA BAY (BOL MEX) SONTERRA OPERATING, INC. 216125 STATE TRACT 150-1 1ST MATAGORDA BAY (BOL MEX) SONTERRA OPERATING, INC. 252274 STATE TRACT 209 1 APPLING, NORTH (MELBOURNE) CORUM PRODUCTION COMPANY 263470 STATE TRACT 224 1 GRASS ISLAND (SALURIA -D-) LINC GULF COAST PETROLEUM, INC. 181012 STATE TRACT 254 1 APPLING DEEP, SW (FRIO) HEMCO DEVELOPMENT, LLC 217956 STATE TRACT 26 3 LAVACA BAY (F-39) NEUMIN PRODUCTION COMPANY 106801 STATE TRACT 26 6 LAVACA BAY (F-34) NEUMIN PRODUCTION COMPANY 153920 STATE TRACT 38 3 LAVACA BAY (F-46) NEUMIN PRODUCTION COMPANY 138463 STATE TRACT 38 4 LAVACA BAY (F-43) NEUMIN PRODUCTION COMPANY 140016 STATE TRACT 38 6 LAVACA BAY (F-34) NEUMIN PRODUCTION COMPANY 149951 STATE TRACT 45 1 ZOLLER, EAST (FRIO -F-) JOVIAN PETROLEUM CORPORATION 185209 STATE TRACT 59 2 MAUDE B. TRAYLOR (F-41-61, DEEP) HILCORP ENERGY COMPANY 229647 STATE TRACT 596-L NE/4 3 SHERMAN OFFSHORE (1700) GULF ENERGY EXPLORATION CORP. 255449 STATE TRACT 629-L SW/4 1UT MATAGORDA BLOCK 629 (4300) WHITE MARLIN OPERATING CO, LLC 092197 STATE TRACT 629-L SW/4 4 MATAGORDA BLOCK 629 (4300) WHITE MARLIN OPERATING CO, LLC 106159 STATE TRACT 659-L NW/4 3 L MATAGORDA BLOCK 629 (PLAYA B) WHITE MARLIN OPERATING CO, LLC 157076 STATE TRACT 707-S 1 U SHERMAN OFFSHORE (3900) GULF ENERGY EXPLORATION CORP. 060757 STATE TRACT 719-S 1 L SHERMAN OFFSHORE (2900 A) GULF ENERGY EXPLORATION CORP. 132259 STATE TRACT 719-S 1 U SHERMAN OFFSHORE, W.(1700 MIO.) GULF ENERGY EXPLORATION CORP. 131844


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ STATE TRACT 72 1 SAN ANTONIO BAY, N. (D-3) CREST PETROLEUM, LLC 047204 STATE TRACT 720-S 2-L SHERMAN OFFSHORE, W. (4000) GULF ENERGY EXPLORATION CORP. 125218 STATE TRACT 720-S 2-U SHERMAN OFFSHORE, W.(1700 MIO.) GULF ENERGY EXPLORATION CORP. 149096 STATE TRACT 721-S 1 SHERMAN OFFSHORE (2900 A) GULF ENERGY EXPLORATION CORP. 121577 STATE TRACT 721-S 1 L SHERMAN OFFSHORE (4100) GULF ENERGY EXPLORATION CORP. 061329 STATE TRACT 721-S 1 U SHERMAN OFFSHORE (3000) GULF ENERGY EXPLORATION CORP. 061145 STATE TRACT 77 1 MAUDE B. TRAYLOR (7700) RINCON PETROLEUM CORPORATION 255118 STATE TRACT 86 1 PANTHER REEF, SW. (FRIO E-4) NEUMIN PRODUCTION COMPANY 168365 STATE TRACT 89 1 PANTHER REEF, SW. (FRIO G-1) NEUMIN PRODUCTION COMPANY 193153 STATE TRACT 89 2 PANTHER REEF, S.W. (FRIO H-2) NEUMIN PRODUCTION COMPANY 198833 STATE TRACT 89 002 PANTHER REEF, S.W. (FRIO G-3) NEUMIN PRODUCTION COMPANY 269199 STAUSS 1 HOCKLEY (3535) REPUBLIC RESOURCES, LLC. 188810 STAUSS 1 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 232263 STAUSS 1 TULETA, W. (12910) BRITANCO, L.L.C. 244744 STAUSS 2 TULETA, WEST (VICKSBURG G) REPUBLIC RESOURCES, LLC. 184659 STAUSS-NELSON 1 TULETA, WEST (VICKSBURG F) REPUBLIC RESOURCES, LLC. 184290 STAUSS-NELSON 1 TULETA, WEST (VICKSBURG G) REPUBLIC RESOURCES, LLC. 182555 STAUSS, IDA ET AL UNIT 1 C RAY-WILCOX (LULING) BRITANCO, L.L.C. 003860 STAUSS, IDA ET AL UNIT 1 T RAY-WILCOX (MASSIVE 1ST) BRITANCO, L.L.C. 003865 STAUSS, IDA ET AL UNIT 2 RAY-WILCOX (WALTON MASSIVE) BRITANCO, L.L.C. 003867 STCH 1 MARSHALL (FRIO 3000) MODERN EXPLORATION, INC. 205517 STEED, J. E. 5 BURNELL (SLICK) CYMRI, L.L.C. 223076 STEELE PARTNERS B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264783 STEEN A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 262171 STEEN, JOHN 1 SITTON (MIOCENE 1900) GULF SANDS OIL CO. 078579 STEFANIE UNIT 1 DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 263763 STEFFEK UNIT 1 BRESLAU (WILCOX 8395) MASCOT OIL COMPANY 266064 STEINDORF 1 WILDCAT ELLIOTT OIL & GAS OPERATING CO. 272354 STEINMAN 6 PROVIDENT CITY, NE. (3390) FIELDWOOD ONSHORE LLC 247726 STEINMAN, ALFRED 2 PROVIDENT CITY, NE. (FRIO 3550) FIELDWOOD ONSHORE LLC 258809 STEINMAN, ALFRED 3 PROVIDENT CITY (MIOCENE 2040) FIELDWOOD ONSHORE LLC 179363 STEINMANN 2H YOAKUM (EDWARDS) ABRAXAS PETROLEUM CORPORATION 171588 STEINMANN A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267475 STEINMANN A 2H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267476 STEINMANN ESTATE 1 BRUSHY CREEK (WILCOX -S-1-11200) CRIMSON EXPLORATION OPER., INC. 173808 STEINMANN ESTATE GAS UNIT #1 1 BRUSHY CREEK, S. (WILCOX 13900) CRIMSON EXPLORATION OPER., INC. 178808 STEINMEYER 1 RACKLEY (FRIO) QNK ENERGY,INC. 220188 STEINMEYER, A. H. 1 HOUDMAN (COLE 1700) BRIGHT NORTH EXPLORATIONS LTD. 143522 STEINOCHER GAS UNIT 1 WORD, N. (7200) CAPITAL STAR OIL & GAS, INC. 149730 STERNBERG, MAGGIE 1 SPEAKS, S. (LOWER WILCOX) CANTERA OPERATING, LLC 198693 STEVENS 1 KASPAR (LOWER WILCOX, 12400) HILCORP ENERGY COMPANY 226917 STEWART 1 MARSHALL, S. (COOK MTN, II) DIRNETT, INC. 220036 STEWART 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268511 STILES GAS UNIT 1 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 236034 STILES GAS UNIT "A" 1 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 237662 STILES GAS UNIT "A" NO 1 2 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 245441 STILES GAS UNIT NO 1 2 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 239168 STILES GAS UNIT NO 1 3 MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 252026 STOCKTON GAS UNIT 1 REA-GOL (13300 SD) GAITHER PETROLEUM CORPORATION 241167 STOCKTON GAS UNIT 1 1 PAWNEE (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 250361 STOFER, M. A. 1 C COLOMA CREEK, NORTH (7700) COLOMA OIL & GAS CORP. 001364


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ STOLDT 1 ANNA BARRE, N. (YEGUA 5260) A & D EXPLORATION COMPANY 176165 STOLTE GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 265096 STOLTZFUS 6 TULETA, WEST (3300) STAPLES, JAMES W. PROD. CO. 118371 STOLTZFUS, C. B. 3 FORTITUDE (800) TYLER, EARL W. 069941 STORMONT 1 BRUSHY CREEK (FRIO 4200) COASTLINE EXPLORATION, INC. 250472 STOUDT 1 WILDCAT SIGNAL OIL AND GAS COMPANY 212460 STOVALL 1 CRANDALL RUBIE (WILCOX CONS.) CRIMSON EXPLORATION OPER., INC. 200146 STOVALL 2 CRANDALL RUBIE (MAGNOLIA) CRIMSON EXPLORATION OPER., INC. 192576 STOVALL 3 CRANDALL RUBIE (WILCOX CONS.) CRIMSON EXPLORATION OPER., INC. 221466 STRADER UNIT 1 RUDMAN (CANNAN SD. 9720) HUGHES, DAN A. COMPANY, L.P. 228741 STRAUBE UNIT 1H KAWITT (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 219963 STRAUBE UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 266780 STRAUBE UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 269503 STRAUBE 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 261038 STRAUBE 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 268667 STRAUCH 1 STRAUCH-WILCOX (9600) HUGHES, DAN A. COMPANY, L.P. 245917 STRAUCH 1 STRAUCH-WILCOX (10800) HUGHES, DAN A. COMPANY, L.P. 213963 STRAUCH, GEORGE EST. 1 REFUGIO OLD VANCE, S.R. 051187 STRAUSS 18 LA WARD, NORTH (4700) KD ENERGY, LLC 240932 STRAUSS 19 LA WARD, NORTH (4700) KD ENERGY, LLC 238938 STRAUSS 24 MAURBRO (PRITCHETT) KD ENERGY, LLC 256612 STRAUSS, MIKE 20 F MAURBRO (5620 SAND) KD ENERGY, LLC 187959 STRENK A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 265469 STRIDDE-SMITH GAS UNIT 1 GOEBEL (9600) KALER ENERGY CORP. 255446 STRIEBECK, W. H. JR. 1 L ELMS (SLICK, LOWER) OMEGA ENERGY, LLC 001519 STRIEBECK, W. H. JR. 1 U ELMS (SLICK, UPPER) OMEGA ENERGY, LLC 001516 STRIEBER 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 264856 STRIKE 1 PENA (YEGUA 4700) B D PRODUCTION CO., INC. 208166 STRIKE 4 PENA (YEGUA 4700) B D PRODUCTION CO., INC. 220962 STRIKE TWO 1 CHOATE, S. (WILCOX 8500) CB ENERGY, LLC 179407 STRIP 1 LAKE PASTURE (L-202) T-C OIL COMPANY, LLC 226309 STRMISKA GAS UNIT 1 A 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 271606 STRMISKA GAS UNIT 1 A 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 271126 STRONG GAS UNIT 1 BEGO (CONSOLIDATED) CODY ENERGY LLC 164492 STRONG GAS UNIT 2 BEGO (CONSOLIDATED) CODY ENERGY LLC 169126 STRONG GAS UNIT 3 BEGO (CONSOLIDATED) CODY ENERGY LLC 166374 STRONG GAS UNIT 4 BEGO (CONSOLIDATED) CODY ENERGY LLC 169254 STRONG GAS UNIT 6 BEGO (CONSOLIDATED) CODY ENERGY LLC 190858 STRONG GAS UNIT 8 BEGO (CONSOLIDATED) CODY ENERGY LLC 192192 STRONG GAS UNIT 9 BEGO (CONSOLIDATED) CODY ENERGY LLC 203413 STULGIS A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 265508 SUGAR -A- 1 YOUGEEN, WEST (3800) SUGAREK FARMS 100764 SUGAR LOAF 1 WILDCAT MARATHON OIL EF LLC 231109 SUGAREK 1 WILDCAT OMEGA ENERGY, LLC 151640 SUGAREK 2 YOUGEEN (FRIO 3610) MARWELL PETROLEUM LTD PARTNRSHIP 170980 SUGAREK 2 YOUGEEN (STILLWELL 4100) OMEGA ENERGY, LLC 157889 SUGAREK 2 YOUGEEN, SOUTH (3800) MARWELL PETROLEUM LTD PARTNRSHIP 167203 SUGAREK 3 YOUGEEN (STILLWELL 4100) OMEGA ENERGY, LLC 159364 SUGAREK, ED 1 YOUGEEN (STILLWELL 4150) WELDER EXPLORATION & PROD., INC. 269316 SULLIVAN UNIT 8 MAXINE, EAST (9100) BRANDER, SAM H. 221029 SULLIVAN UNIT 10 MAXINE, EAST (9100) BRANDER, SAM H. 149025


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ SULLIVAN UNIT 11 MAXINE, EAST (8700) BRANDER, SAM H. 149739 SULLIVAN UNIT 12 MAXINE, EAST (9100) BRANDER, SAM H. 250834 SULLIVAN UNIT 13T MAXINE, EAST (8700) BRANDER, SAM H. 138099 SULLIVAN, JAMES D. 9 MAXINE, EAST (8700) BRANDER, SAM H. 146943 SUSTR, JIM J. UNIT 1 MOULTON (JACKSON) SOUTHERN OIL & GAS CO, LTD. 075225 SWANSON ET AL 2A TEXAM (COLE) ORIGIN PRODUCTION GROUP LLC 123680 SWETLICK 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268916 SWICKHEIMER 2 JOBAR (YEGUA) TIDEWATER MINERALS CORPORATION 168737 SWICKHEIMER A 1 BEGO (CONSOLIDATED) BLAKENERGY OPERATING, LLC 178738 SWICKHEIMER ESTATE 1 JOBAR (YEGUA) TIDEWATER MINERALS CORPORATION 167799 SWICKHEIMER, G. G. ESTATE 1 AUSTIN (NITA) ENERGYQUEST II, LLC 186780 SWIERC 3 TOM LYNE, EAST (BASAL LULING) TRADITION RESOURCES OPER, LLC 249432 SWIERC G. U. 1-C TOM LYNE, EAST (WILCOX 8400) TRADITION RESOURCES OPER, LLC 161997 SWIERC G. U. 1T TOM LYNE, EAST (SLICK) TRADITION RESOURCES OPER, LLC 193210 SWIERC G. U. 2 TOM LYNE (LULING 8800 EAST) TRADITION RESOURCES OPER, LLC 178849 SWIERC G.U. 4 TOM LYNNE, EAST (1ST MAS. STRGR) TRADITION RESOURCES OPER, LLC 217640 SWIERC SWD 1 TOM LYNE (LULING 8800) TRADITION RESOURCES OPER, LLC 187063 SWISHER 1 COQUAT (12700) MILAGRO EXPLORATION, LLC 240703 SYRING, R. J. 2 KENEDY, CENTRAL (EDWARDS) JONES, EDWIN M. OIL CO. 134421 T BIRD 1H SUGARKANE (EAGLE FORD) SABINE OIL & GAS CORPORATION 260636 T BIRD UNIT 2H SUGARKANE (EAGLE FORD) SABINE OIL & GAS CORPORATION 271336 T BIRD UNIT 3H SUGARKANE (EAGLE FORD) SABINE OIL & GAS CORPORATION 271350 T BIRD UNIT 4H SUGARKANE (EAGLE FORD) SABINE OIL & GAS CORPORATION 271348 T BIRD UNIT 5H SUGARKANE (EAGLE FORD) SABINE OIL & GAS CORPORATION 271442 T. J. LYNE - PVOG 9 TOM LYNE NE. (HOCKLEY) HILCORP ENERGY COMPANY 243871 T. J. LYNE-PVOG 5 TOM LYNE (REAGAN -C-) HILCORP ENERGY COMPANY 240652 T. L. G. 1 BERCLAIR (LULING) WELDER EXPLORATION & PROD., INC. 203164 T.K.E. UNIT 1 TOM LYNE, NE. (HOCKLEY E) AWP OPERATING COMPANY 239144 T.L.G. 2 WILDCAT WELDER EXPLORATION & PROD., INC. 263804 T-C OIL CO. -O'CONNOR 65 LAKE PASTURE (E-279) T-C OIL COMPANY, LLC 261265 T-C OIL CO. -O'CONNOR 65 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 225512 T-C OIL CO.-O'CONNER 30 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 189304 T-C OIL CO.-O'CONNOR 3 LAKE PASTURE (FS-545) T-C OIL COMPANY, LLC 194589 T-C OIL CO.-O'CONNOR 19 LAKE PASTURE (FS-545) T-C OIL COMPANY, LLC 140262 T-C OIL CO.-O'CONNOR 63 LAKE PASTURE (L-202) T-C OIL COMPANY, LLC 239367 T-C OIL CO.-O'CONNOR 84 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 222237 T-C OIL CO.-OCONNOR 21 LAKE PASTURE (FS-503) T-C OIL COMPANY, LLC 002595 T-C OIL CO.-OCONNOR 44 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 061345 T-C OIL CO.-OCONNOR 60 LAKE PASTURE (M-330) T-C OIL COMPANY, LLC 114875 T-C OIL CO.-OCONNOR 64 LAKE PASTURE (FS-503) T-C OIL COMPANY, LLC 126467 T-C OIL COMPANY-O'CONNOR 4-L LAKE PASTURE (FS-545) T-C OIL COMPANY, LLC 138805 T-C OIL COMPANY-O'CONNOR 4-U LAKE PASTURE (FS-523) T-C OIL COMPANY, LLC 138332 TABOR GAS UNIT 1 PORTER, N. (REKLAW) BAY ROCK OPERATING COMPANY 059484 TALI 1 NURSERY (3260) CML EXPLORATION, LLC 250859 TALK GAS UNIT 2 MALO DOMINGO (TALK D) DUNE OPERATING COMPANY 109272 TAYLOR 1 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 226432 TAYLOR 2 POWDER RIVER (CONSOLIDATED) HOUSTON GULF ENERGY CORPORATION 226479 TAYLOR FARMS, INC. 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 260245 TAYLOR FARMS, INC. 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272307 TE KENEDY SWD 1 SUGARKANE (EAGLE FORD) SABLE ENVIRONMENTAL, LLC 265860 TEAGUE, J & I 1 FRIENDSHIP CHURCH (HOCKLEY) NELSON, JAMES L. 260577


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ TECHNIK 5 CAMPBELL CREEK (9700) INLAND OCEAN, INC. 271492 TECHNIK, JULIUS UNIT #2 2 CHARLIE DAUBERT (9700) INLAND OCEAN, INC. 121019 TELTSCHICK 2 RYAN (WILCOX 10,600) UNION GAS OPERATING COMPANY 254300 TEN CATE 2 C LOLITA (5800) MCGOWAN WORKING PARTNERS, INC. 002650 TERRELL 1 BERCLAIR (LULING) CML EXPLORATION, LLC 261913 TERRELL 1 DALLAS HUSKY, NE. (MACKHANK) CML EXPLORATION, LLC 257555 TERRELL "B" 5RR COLETTO CREEK (2100) PETRA OLEUM CORP. 146088 TERRELL -B- 3 COLETTO CREEK (2250 STRAY) PETRA OLEUM CORP. 108585 TERRELL -B- 7 COLETTO CREEK (2600) PETRA OLEUM CORP. 200071 TERRELL -B- 10 COLETTO CREEK (2350) PETRA OLEUM CORP. 274359 TERRELL "A" 2 COLETTO CREEK (1400 MIOCENE) PETRA OLEUM CORP. 177191 TERRELL "B" 5R COLETTO CREEK (1400 MIOCENE) PETRA OLEUM CORP. 146046 TERRELL A 6 COLETTO CREEK (4550) PETRA OLEUM CORP. 138313 TERRELL, ETTA A 2 GAFFNEY (5300) ARKANSAS FUEL OIL CORP. 001631 TERRELL, ETTA -C- 1A COLETTO CREEK (3800 FRIO) PETRA OLEUM CORP. 131651 TERRELL, ETTA "A" 17 TERRELL POINT (4050) RINCON PETROLEUM CORPORATION 177212 TERRELL, ETTA C. 4 COLETTO CREEK (2300) PETRA OLEUM CORP. 202781 TERRELL, ETTA E 16 COLETTO CREEK (4550) PETRA OLEUM CORP. 221969 TERRY-GOTT 1D CLARKS CREEK (MIOCENE) STRATCO OPERATING CO., INC. 229756 TERRY-GOTT GAS UNIT 2 HOPE (VICKSBURG 3200) STRATCO OPERATING CO., INC. 228063 TERRY-GUTIERREZ UNIT 2 HOPE, NE. (1100) STRATCO OPERATING CO., INC. 238232 TEXACO PEL-TEX SCHREINER TRUST 1 SHARONLEE, N.E. (SLIGO) WAGNER OIL COMPANY 122850 TEXACO-PEL-TEX BLANCHE HERRING 1 SHARONLEE (SLIGO) UMMA RESOURCES, LLC 117743 THIELE GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 267309 THIEME 1 MEYERSVILLE, E. (3000) ROBERTSON RESOURCES, INC. 175416 THIEME 3 MEYERSVILLE, E. (3100) ROBERTSON RESOURCES, INC. 184333 THIEME GAS UNIT 1 1A SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 257844 THIEME GAS UNIT 1 1H MORAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 262900 THIEME GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 266142 THIEME GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 267630 THOMAS O'CONNOR -A- A 9 TOM OCONNOR (4600) T-C OIL COMPANY, LLC 208132 THOMAS O'CONNOR -B- B 19 TOM OCONNOR (4950) T-C OIL COMPANY, LLC 212287 THOMAS O'CONNOR -B- B 25 TOM OCONNOR (4950) T-C OIL COMPANY, LLC 176367 THOMAS O'CONNOR -B- B 39 TOM OCONNOR (4950) T-C OIL COMPANY, LLC 205812 THOMAS O'CONNOR -E- E 17 TOM O'CONNOR (4925) T-C OIL COMPANY, LLC 261775 THOMAS O'CONNOR -E- E 21 TOM OCONNOR (4200) T-C OIL COMPANY, LLC 149301 THOMAS O'CONNOR -E- E 22 TOM O'CONNOR (4925) T-C OIL COMPANY, LLC 258686 THOMAS O'CONNOR -E- E 43 TOM OCONNOR (4950) T-C OIL COMPANY, LLC 258690 THOMAS O'CONNOR -E- E 54 TOM OCONNOR (4950) T-C OIL COMPANY, LLC 266301 THOMAS O'CONNOR 'A' 71 TOM OCONNOR (5400 SAND) HILCORP ENERGY COMPANY 271491 THOMAS O'CONNOR 'C' 98 TOM OCONNOR (5450 SAND) HILCORP ENERGY COMPANY 274911 THOMAS O'CONNOR 'D' 5 MELON CREEK HILCORP ENERGY COMPANY 182449 THOMAS O'CONNOR "B" 32 MARY ELLEN OCONNOR (FT-18 SAND) HILCORP ENERGY COMPANY 257764 THOMAS O'CONNOR "B" 55 MARY ELLEN OCONNOR (FS-1) HILCORP ENERGY COMPANY 266668 THOMAS O'CONNOR "B" 56 MELON CREEK (5870) HILCORP ENERGY COMPANY 270895 THOMAS O'CONNOR "C" 50 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 267124 THOMAS O'CONNOR "C" 66 GRETA (L-10) HILCORP ENERGY COMPANY 261017 THOMAS O'CONNOR "D" 4 MELON CREEK HILCORP ENERGY COMPANY 250850 THOMAS, ANNE 4 WEESATCHE,WEST (HOLT SAND 10880) KEBO OIL & GAS, INC. 108593 THOMAS, ANNE 5 WEESATCHE, WEST (10700) KEBO OIL & GAS, INC. 113191 THOMAS, ANNE FRIAR 1 WILDCAT HILCORP ENERGY COMPANY 248630


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ THOMSON-BARROW 4 MASSINGILL, W. (CHAMBERLAIN) DEWBRE PETROLEUM CORPORATION 143884 THOMSON, LAURA D. "B" 3 HEARD RANCH (4400) MARWELL PETROLEUM LTD PARTNRSHIP 136457 THREE RIVERS GAS UNIT 1 1 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 262915 THREE RIVERS GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 267564 THREE RIVERS SWD 2 THREE RIVERS (EDWARDS) PIONEER NATURAL RES. USA, INC. 237846 THREE SISTERS 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 259504 THREE SISTERS 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267710 THREE SISTERS 01 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267862 THREE SISTERS 01 04H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267864 THREE SISTERS 01 05H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266605 THREE SISTERS 01 06H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268690 THREE SISTERS 01 07H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 265494 THREE SISTERS 01 08H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268550 THREE SISTERS 01 09H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 267708 THREE SISTERS 01 10H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269581 THREE SISTERS 01 11H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268743 THREE SISTERS 01 12H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268740 THREE SISTERS 01 13H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268739 THREE SISTERS 01 14H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268653 THREE SISTERS 01 15H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 273532 THREE SISTERS 01 16H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 273705 THREE SISTERS 01 17H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 273013 THREE SISTERS 01 18H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 273488 THREE SISTERS 01 20H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 275851 THREE SISTERS 01 21H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 275247 THUNDERBIRD 1 R BIG 12 (11,900) SUE-ANN OPERATING, L.C. 246671 THWING GAS UNIT 1 OCONNOR RANCH (FRIO CONS.) AMERICO ENERGY RESOURCES, LLC 198541 TIETZ 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 270914 TINDOL UNIT 1 GEORGE WEST, WEST (10430) KAISER-FRANCIS OIL COMPANY 111972 TIPTON 2 ORD (WILCOX J-1 SAND) MAGNUM PRODUCING, LP 189915 TIPTON, IDA E. 2 BOYCE (RECKLAW) NELSON, JAMES L. 000972 TITTIZER UNIT 1 TORO GRANDE (8700 SD) MARQUEE CORPORATION 273436 TOLLET, CHAS. 2 BERCLAIR (2100) WOLFE, HAROLD E. 000847 TOM O'CONNOR "A" 37 TOM OCONNOR (5275) HILCORP ENERGY COMPANY 261129 TOM O'CONNOR(5600 FOOT SAND)UNIT W203B TOM O'CONNOR (5600 FOOT SAND) HILCORP ENERGY COMPANY 192700 TOM OCONNOR (5800) FIELD UNIT Q842W GRETA (L- 2) HILCORP ENERGY COMPANY 087746 TOM-HOLLAND 1 TYNAN (1300) GULF SANDS OIL CO. 127298 TOM, BETTY 1 TYNAN (2520) KEN PETROLEUM CORPORATION 143157 TOMASEK GAS UNIT 1 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 003546 TOMASEK GAS UNIT 3 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 141991 TOMASEK GAS UNIT 3SW PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 237844 TOMASEK GAS UNIT 4 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 147064 TOMASEK GAS UNIT 5 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 178453 TOMASEK GAS UNIT 6 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 180893 TOMASEK GAS UNIT 7 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 185265 TOMASEK GAS UNIT 9 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 253305 TOMASEK GAS UNIT 10 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 247126 TOMASEK GAS UNIT 11 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 249344 TOMASEK GAS UNIT 12 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 242630 TOMASEK GU 8 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 220284 TONEY, M. H. 36D WEST RANCH (3800) HILCORP ENERGY COMPANY 237557


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ TONEY, M. H. 77 D WEST RANCH (WARD) HILCORP ENERGY COMPANY 069560 TONEY, M. H. MRS. 73 WEST RANCH (WARD) HILCORP ENERGY COMPANY 233537 TONEY, M. H., MRS. 82 D WEST RANCH (TONEY) HILCORP ENERGY COMPANY 253229 TONEY, MRS. M. H. 20 WEST RANCH (3470) HILCORP ENERGY COMPANY 100627 TOSTENSON GAS UNIT 3 TULETA, WEST (HOCKLEY 3100) WAGNER OIL COMPANY 273603 TOSTENSON, A. O. UNIT #1 1 TULETA-WILCOX, SOUTH (LULING) WAGNER OIL COMPANY 004505 TPR SCHOVAJASA "A" 1 PLACEDO (6700) PEGASUS OPERATING, INC. 210505 TRACT 72 2 REFUGIO-FOX (6400) KEBO OIL & GAS, INC. 150100 TRACT 72 4 REFUGIO-FOX (1675) KEBO OIL & GAS, INC. 171983 TRAYLOR 1 PROVIDENT CITY (WILCOX 8,800) B D PRODUCTION CO., INC. 126973 TRAYLOR ESTATE 1 EL TORO BUENO (AY-3) HOLLIMON OIL CORPORATION 239970 TRAYLOR-MILLER 2 PROVIDENT CITY (YEGUA -P-) FIELDWOOD ONSHORE LLC 194124 TRAYLOR, A.V. 9 PROVIDENT CITY (YEGUA L) FIELDWOOD ONSHORE LLC 139511 TRAYLOR, ALMA V. 2 PROVIDENT CITY (FRIO 3100) FIELDWOOD ONSHORE LLC 170653 TRAYLOR, ALMA V. 6 PROVIDENT CITY (FRIO 3410) FIELDWOOD ONSHORE LLC 170625 TRAYLOR, ALMA V. 7 PROVIDENT CITY (FRIO 3360) FIELDWOOD ONSHORE LLC 190771 TRAYLOR, GENE C. 1 T LAURA (8100) FULLER, ANCIL T. 126956 TRAYLOR, M. B., EST. 3 MAUDE B. TRAYLOR (F-41-61, DEEP) WHITE MARLIN OPERATING CO, LLC 233313 TRAYLOR, M.B. "B" 5 MAUDE B. TRAYLOR, CENTRAL (40) TAOS RESOURCES OPERATING CO LLC 158527 TRAYLOR, M.B. EST. 2 MAUDE B. TRAYLOR (F-41-61, DEEP) WHITE MARLIN OPERATING CO, LLC 127387 TRAYLOR, M.B. ESTATE 1 MAUDE B. TRAYLOR (F-41-61, DEEP) WHITE MARLIN OPERATING CO, LLC 154264 TRAYLOR, M.B., EST. 2 MAUDE B. TRAYLOR (8150 SAND) WHITE MARLIN OPERATING CO, LLC 237206 TRAYLOR, MAUDE 8 L MAUDE B. TRAYLOR, NORTH (30) TAOS RESOURCES OPERATING CO LLC 072084 TRAYLOR, MAUDE 14 MAUDE B. TRAYLOR, NORTH (30) TAOS RESOURCES OPERATING CO LLC 210541 TRAYLOR, MAUDE A 1 MAUDE B. TRAYLOR (F-41-61, DEEP) HILCORP ENERGY COMPANY 225770 TRAYLOR, MAUDE A 2 MAUDE B. TRAYLOR (F-41-61, DEEP) HILCORP ENERGY COMPANY 226803 TRAYLOR, MAUDE A 3ST MAUDE B. TRAYLOR (F-41-61, DEEP) HILCORP ENERGY COMPANY 239220 TRAYLOR, MAUDE B 3 MAUDE B. TRAYLOR (F-41-61, DEEP) WHITE MARLIN OPERATING CO, LLC 230380 TRAYLOR, MAUDE B 4 MAUDE B. TRAYLOR (F-41-61, DEEP) WHITE MARLIN OPERATING CO, LLC 248874 TRAYLOR, MAUDE B. 1 MAUDE B. TRAYLOR (F-41-61, DEEP) WHITE MARLIN OPERATING CO, LLC 106827 TRAYLOR, MAUDE B. 1 MAUDE B. TRAYLOR, NORTH (43) TAOS RESOURCES OPERATING CO LLC 129631 TRAYLOR, MAUDE B. 3 MAUDE B. TRAYLOR, NORTH (85) TAOS RESOURCES OPERATING CO LLC 157815 TRAYLOR, MAUDE B. 6 MAUDE B. TRAYLOR (7200) CIMAREX ENERGY CO. OF COLORADO 046118 TRAYLOR, MAUDE B. 7 MAUDE B. TRAYLOR, NORTH (28) TAOS RESOURCES OPERATING CO LLC 061402 TRAYLOR, MAUDE B. 9 MAUDE B. TRAYLOR (7500) CIMAREX ENERGY CO. OF COLORADO 203117 TRAYLOR, MAUDE B. 10 MAUDE B. TRAYLOR, NORTH (40) TAOS RESOURCES OPERATING CO LLC 133415 TRAYLOR, MAUDE B. 12 MAUDE B. TRAYLOR, NORTH (43) TAOS RESOURCES OPERATING CO LLC 200557 TRAYLOR, MAUDE B. 13 MAUDE B. TRAYLOR, NORTH (80) TAOS RESOURCES OPERATING CO LLC 151098 TRAYLOR, MAUDE B. 25 OLIVIA (7500, UPPER) CIMAREX ENERGY CO. OF COLORADO 202247 TRAYLOR, MAUDE B. 26 MAUDE B. TRAYLOR (F-41-61, DEEP) CIMAREX ENERGY CO. OF COLORADO 147633 TRAYLOR, MAUDE B. 27-L MAUDE B. TRAYLOR (F-41-61, DEEP) CIMAREX ENERGY CO. OF COLORADO 148603 TRAYLOR, MAUDE B. 28 MAUDE B. TRAYLOR (F-41-61, DEEP) CIMAREX ENERGY CO. OF COLORADO 198850 TRAYLOR, MAUDE B. 29 MAUDE B. TRAYLOR (7700) CIMAREX ENERGY CO. OF COLORADO 198232 TRAYLOR, MAUDE B. 30 MAUDE B. TRAYLOR (7700) CIMAREX ENERGY CO. OF COLORADO 181999 TRAYLOR, MAUDE B. 30C MAUDE B. TRAYLOR, S. (BECK, LO.) CIMAREX ENERGY CO. OF COLORADO 162579 TRAYLOR, MAUDE B. 36 MAUDE B. TRAYLOR (F-41-61, DEEP) CIMAREX ENERGY CO. OF COLORADO 166338 TRAYLOR, MAUDE B. 39 MAUDE B. TRAYLOR (7700) CIMAREX ENERGY CO. OF COLORADO 211823 TRAYLOR, MAUDE B. 40 MAUDE B. TRAYLOR (F-41-61, DEEP) CIMAREX ENERGY CO. OF COLORADO 232800 TRAYLOR, MAUDE B. 42 MAUDE B. TRAYLOR (F-41-61, DEEP) CIMAREX ENERGY CO. OF COLORADO 232884 TRAYLOR, MAUDE B. 45 MAUDE B. TRAYLOR (OATS) CIMAREX ENERGY CO. OF COLORADO 256605 TRAYLOR, MAUDE B. 'B' 1 MAUDE B. TRAYLOR, NORTH (78-A) TAOS RESOURCES OPERATING CO LLC 159322


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ TRAYLOR, MAUDE B. "B" 7 MAUDE B. TRAYLOR (F-41-61, DEEP) TAOS RESOURCES OPERATING CO LLC 234224 TRAYLOR, MAUDE B. "B" 8 MAUDE B. TRAYLOR (F-41-61, DEEP) TAOS RESOURCES OPERATING CO LLC 233750 TRAYLOR, MAUDE B. "B" 10 MAUDE B. TRAYLOR (F-41-61, DEEP) TAOS RESOURCES OPERATING CO LLC 248628 TRAYLOR, MAUDE B. "B" B 6 MAUDE B. TRAYLOR, NORTH (44) TAOS RESOURCES OPERATING CO LLC 168333 TRAYLOR, MAUDE B. MRS. 7 MAUDE B. TRAYLOR (F-41-61, DEEP) HILCORP ENERGY COMPANY 119772 TRAYLOR, MAUDE B. MRS. -A- 7 OLIVIA (7200) ACCIDIE EXPLORATION AND DEV.,INC 045685 TRAYLOR, T. P. -B- 4 HEYSER (4400) C.W. PICKERING, INC. 046943 TRAYLOR, T. P. -B- 5 HEYSER (4400) C.W. PICKERING, INC. 055750 TRAYLOR, T. P. -B- 7 HEYSER (4300) MCGOWAN WORKING PARTNERS, INC. 002092 TRAYLOR, T. P. -B- 8 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 091185 TRAYLOR, T. P. -B- 20 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 089901 TRAYLOR, T. P. -B- 21 HEYSER (4400) MCGOWAN WORKING PARTNERS, INC. 044114 TRAYLOR, T. P. -B- 26 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 089903 TRAYLOR, T. P. -B- 59 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 089906 TRAYLOR, T. P. -B- (PF) 1 HEYSER (5400 #2) MCGOWAN WORKING PARTNERS, INC. 090796 TRAYLOR, T. P. ETAL "B" 58 HEYSER MCGOWAN WORKING PARTNERS, INC. 168255 TRAYLOR, W. L. "D" 8 MAUDE B. TRAYLOR, NORTH (28) TAOS RESOURCES OPERATING CO LLC 231336 TREVINO 1 REFUGIO OLD (5300) MISSION RIVER SYSTEMS, INC. 177961 TRIAL 2 NORBEE (HOCKLEY 3700) ENCO EXPLORATION COMPANY 257813 TRULL 3 SPEAKS, SW. (3400) COASTAL PLAINS ENERGY, INC. 189315 TRULL 4 SPEAKS, SW. (FRIO) COASTAL PLAINS ENERGY, INC. 221823 TRULL 5 SPEAKS, S.W. (3600) COASTAL PLAINS ENERGY, INC. 221820 TRULL, B. W. 1 SPEAKS, SW. (WILCOX -A-) COASTAL PLAINS ENERGY, INC. 004205 TRULL, B. W. 2 SPEAKS, SW. (WILCOX -A-) COASTAL PLAINS ENERGY, INC. 117922 TRULL, R.B. 3 CARANCAHUA CREEK, E (MIOCENE B) SPINDLETOP OIL & GAS COMPANY 073374 TULLIS 1 TOM LYNE, NE (SLICK) HURD ENTERPRISES, LTD. 219633 TULLIS 1 C TOM LYNE NE. (HOCKLEY) AWP OPERATING COMPANY 076878 TULLIS -C- 1 TOM LYNE NE. (HOCKLEY) AWP OPERATING COMPANY 070191 TULLIS-WALKER 1 CROCKER (WX. 10,800) HURD ENTERPRISES, LTD. 274639 TULSITA RAY 94 RAY (VICKSBURG-HOCKLEY) SYDSON ENERGY, INC. 275680 TUMLINSON 1 BEGO (CONSOLIDATED) BLAKENERGY OPERATING, LLC 224197 TUNISON, F. V. NCT-1 17 MAYO (5300 FRIO) KD ENERGY, LLC 030585 TUNISON, F. V. NCT-1 19F GANADO (3900) KD ENERGY, LLC 096099 TUNISON, F. V. NCT-1 22F GANADO (4000) KD ENERGY, LLC 181982 TUNISON, F.V. NCT-1 22 H GANADO (4170) KD ENERGY, LLC 092873 TUNISON, F.V. NCT-1 27 GANADO (3900) KD ENERGY, LLC 093193 TURNBOW 1 RUDMAN (CANNAN SD. 9720) BRAZOS PRODUCTION SERVICES, INC. 164433 TURNBOW 2 RUDMAN (CANNAN SD. 9720) HUGHES, DAN A. COMPANY, L.P. 229400 TURNBULL UNIT D 18H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 270840 TURNER GAS UNIT 3 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 191433 TURNER GAS UNIT 3 YOAKUM (DEERSLAYER SAND) UNIT PETROLEUM COMPANY 224970 TURNER GAS UNIT 5 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 196809 TURNER GAS UNIT 6 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 200073 TURNER GAS UNIT 8 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 205878 TURNER GAS UNIT 9 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 214410 TURNER GAS UNIT 13 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 232931 TURNER GAS UNIT 14 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 228713 TURNER GU 7 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 202563 TURNER GU 10 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 215298 TURNER GU 11 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 221105 TURNER GU 12 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 220292


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ TURNER UNIT 1 YOAKUM (WILCOX 8300) UNIT PETROLEUM COMPANY 132395 TURNER-PLUMMER 1 WILDCAT CHESTNUT EXPLOR. AND PROD., INC. 271225 TURNER, E. A. "D" 3 WEST RANCH (FRIO 383) CHESTNUT EXPLOR. AND PROD., INC. 172144 TURNER, S. E. GAS UNIT 2 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 069021 TUSA, T. S. 1 PROVIDENT CITY (FRIO -A-) FIELDWOOD ONSHORE LLC 145100 TUSA, T. S. 2 PROVIDENT CITY (FRIO -A-) FIELDWOOD ONSHORE LLC 157153 TUSA, T. S. 4 PROVIDENT CITY (FRIO -A-) FIELDWOOD ONSHORE LLC 168734 TUSA, T. S. JR. 1 PROVIDENT CITY (WILCOX 11,900) FIELDWOOD ONSHORE LLC 170003 ULCAK-EDWARDS GAS UNIT 1 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 095081 ULRICH A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264531 UNDERWOOD ESTATE 1 SUBLIME, WEST (MIDWAY, U.) BALLARD EXPLORATION COMPANY,INC. 269437 UNION 1 HOPE (FRIO 2950) DJ EXPLORATION, INC. 245572 UNITAS, RUTH 1 GEORGE WEST, EAST (QUEEN CITY) FAULCONER, VERNON E., INC. 195910 UNITED SWD 2R SPEAKS, S.W. (2600) CRIMSON EXPLORATION OPER., INC. 192228 UNLIMITED RESOURCES 2 CLAYTON, NORTH (5780 SLICK) WEBB COUNTY UNLIMITED RES., LLC 265264 UPCHURCH 1 SPEAKS, SW. (RAINBOW) CRIMSON EXPLORATION OPER., INC. 169365 UPCHURCH, Z. 1 SPEAKS, SW. (WILCOX -A-) COASTAL PLAINS ENERGY, INC. 004204 URBAN-FOERSTER UNIT 1 POEHLER (SLICK-WILCOX 8000) NELSON, JAMES L. 089214 URBANCZYK A#1 1 PERSON (EDWARDS) MISSION RIVER SYSTEMS, INC. 180212 URRUTIA UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 260389 URRUTIA UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 274546 USZYNSKI GAS UNIT 1 1 SPEARY (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 256606 VANCE, JOHN T. 2 T TEXANA, N. (FRIO 6240) HARPER-SMITH & ASSOCIATES, INC. 038624 VANDENBERG & HILL 16 PLACEDO, EAST (5200) ACOCK/ANAQUA OPERATING CO., LP 095769 VANDENBERG & HILL 20 PLACEDO, EAST (4000) ACOCK/ANAQUA OPERATING CO., LP 134425 VANDENBERG & HILL 27 PLACEDO, EAST (4000) ACOCK/ANAQUA OPERATING CO., LP 192217 VANDENBERG & HILL 29 PLACEDO, EAST (5200) ACOCK/ANAQUA OPERATING CO., LP 192156 VANDENBERG & HILL 34 PLACEDO, EAST ACOCK/ANAQUA OPERATING CO., LP 205532 VANDENBERG & HILL 37 PLACEDO, EAST (5840) ACOCK/ANAQUA OPERATING CO., LP 211328 VANDENBERG & HILL 44 PLACEDO, EAST (5960) ACOCK/ANAQUA OPERATING CO., LP 270297 VANDENBERG, M. T. 11 HEYSER (2670 SAND) MCGOWAN WORKING PARTNERS, INC. 101559 VANDENBERGE & HILL 6 PLACEDO, EAST (3525) ACOCK/ANAQUA OPERATING CO., LP 106152 VANDENBERGE & HILL 10 PLACEDO (5300 SINTON) ACOCK/ANAQUA OPERATING CO., LP 145173 VANDENBERGE & HILL 11 PLACEDO, EAST (4000) ACOCK/ANAQUA OPERATING CO., LP 149145 VANDENBERGE & HILL SWD 30R PLACEDO, EAST (4700) ACOCK/ANAQUA OPERATING CO., LP 265345 VANDENBERGE, M. T. 12 HEYSER (F-37) MCGOWAN WORKING PARTNERS, INC. 088641 VANDENBERGE, M.T. 14 HEYSER (F-37) MCGOWAN WORKING PARTNERS, INC. 130359 VANDERBILT STATE 2 WEST RANCH (MITCHELL) HILCORP ENERGY COMPANY 061563 VANDERBILT STATE 17 WILDCAT HILCORP ENERGY COMPANY 155704 VANDERBILT STATE 28 WEST RANCH (BENNVIEW, NE.) HILCORP ENERGY COMPANY 184249 VANDERBILT STATE -B- 7 WEST RANCH (WARD) HILCORP ENERGY COMPANY 207291 VANDERBILT STATE -B- 10 WEST RANCH (FRIO 383) HILCORP ENERGY COMPANY 254348 VAQUERO 1 ROB WELDER (WILCOX 9100) SPINDLETOP DRILLING CO. 252942 VAQUERO "A" A 2 WELDER RANCH SPINDLETOP DRILLING CO. 252483 VAUGHN, G. 1 VAUGHN RANCH (HOSTETTER 13,250) ZENERGY, INC. 215896 VAUGHN, G. 2 VAUGHN RANCH (HOSTETTER 13,250) ZENERGY, INC. 222503 VERODA-SUGAREK UNIT 1 SLIVA (2850) DIRNETT, INC. 058001 VESELY 1 DRY HOLLOW (13,900 WILCOX) CANTERA OPERATING, LLC 198767 VESELY GU 1 2 DRY HOLLOW (13,900 WILCOX) CANTERA OPERATING, LLC 226826 VICKERS GAS UNIT 1 A 1H DE WITT (EAGLE FORD SHALE) STATOIL TEXAS ONSHORE PROP LLC 268217 VICTORIA REGIONAL AIRPORT 1 TELFERNER (4600) HOLLIMON OIL CORPORATION 184371


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ VICTORIA REGIONAL AIRPORT 3 TELFERNER (4600) HOLLIMON OIL CORPORATION 192017 VIDAURI "A" 1 PHIL POWER (5000) CHARRO OPERATING, L.L.C. 260560 VIDAURI "E" 13 VIDAURI, SW. (5100) CHARRO OPERATING, L.L.C. 242035 VIDAURI "F" 25 GRETA, NORTH (6500 SD.) CHARRO OPERATING, L.L.C. 244750 VIDAURI "F" 26 PHIL POWER (5550) CHARRO OPERATING, L.L.C. 244754 VIDAURI "F" 34 GRETA, NORTH (6300 FRIO) CHARRO OPERATING, L.L.C. 245908 VIKING 1 WILDCAT MARQUEE CORPORATION 246690 VIKING 2 SPEAKS, SW. (WILCOX 11,200) MARQUEE CORPORATION 257143 VIKING VENTURES 1 SPEAKS (3200) MOOSE OPERATING CO., INC. 174996 VIKING VENTURES 3 SPEAKS, SW. (5570) SOUNDLOGIC PROD. & EXPLOR., LLC 175902 VIKING VENTURES 4 SPEAKS (3200) SOUNDLOGIC PROD. & EXPLOR., LLC 175238 VIKING VENTURES "A" 2 SPEAKS (3200) MOOSE OPERATING CO., INC. 175000 VILLAFRANCA 1 D NURSERY (3440) FFA PETROLEUM SERVICES, INC. 222071 VILLAFRANCA 1 F NURSERY (3100) CML EXPLORATION, LLC 222069 VINCENT, KENNETH Z. 2 VIDAURI, WEST (4800) VANCE, S.R. 004593 VINCIK, ADOLPH 1 EL TORO, SW. (5830) OSYKA PERMIAN, LLC 177898 VINCIK, ADOLPH 2 L EL TORO, SW. (7000) OSYKA PERMIAN, LLC 053761 VIVIAN BORCHERS UNIT 2 14 BENBOW (LOWER WILCOX A) RAMTEX ENERGY LLC 245250 VOELKEL 1 WARMSLEY (VAUGHN) LRE OPERATING, LLC 229653 VOELKEL 2 NORDHEIM (PETTUS) LRE OPERATING, LLC 246694 VOELKEL GAS UNIT 2H WARMSLEY, S. (10550) WINN EXPLORATION CO., INC. 246892 VON ROSENBERG, MONTE GAS UNIT 1D WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 077595 VON ROSENBERG, MONTE GAS UNIT 2 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 074545 VON ROSENBERG, MONTE GAS UNIT #1 3 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 076036 VON ROSENBERG, MONTE GAS UNIT #1 4 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 097122 VON ROSENBERG, MONTE GAS UNIT #1 6 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 113561 VON ROSENBERG, MONTE GAS UNIT #1 7 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 133208 VON ROSENBERG, MONTE GAS UNIT #1 9 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 125843 VON ROSENBERG, MONTE GAS UNIT 1 10 WORD, N. (EDWARDS) CAPITAL STAR OIL & GAS, INC. 135009 W. A. BLACKWELL GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 273093 W. BUTLER A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 271536 W. J. FOX 'A' 16 REFUGIO-FOX (4700) HILCORP ENERGY COMPANY 272306 W. J. FOX 'A' 20 REFUGIO-FOX (3940) HILCORP ENERGY COMPANY 273209 W. J. FOX 'A' 34 HYNES RANCH (7160) HILCORP ENERGY COMPANY 274398 W. J. FOX 'A' 42 REFUGIO-FOX (6220) HILCORP ENERGY COMPANY 274975 W. J. FOX 'A' 44 REFUGIO-FOX (1675) HILCORP ENERGY COMPANY 272721 W. J. FOX 'A' 50 REFUGIO-FOX (6600) HILCORP ENERGY COMPANY 271692 W. T. BELL GAS UNIT 1A JENNIE BELL (WILCOX 11500) HILCORP ENERGY COMPANY 230406 W. T. BELL GAS UNIT 9 JENNIE BELL (WILCOX 11500) HILCORP ENERGY COMPANY 225246 W. T. BELL GAS UNIT 10 JENNIE BELL (WILCOX 11500) HILCORP ENERGY COMPANY 227723 W. T. BELL GAS UNIT 11 JENNIE BELL (WILCOX 11500) HILCORP ENERGY COMPANY 229732 W.B. FITZHENRY HEIRS GAS UNIT 1 DRY HOLLOW (UPPER ROCHELLE) CANTERA OPERATING, LLC 272364 WADE 1 HOPE (WILCOX 9350) ESCONDIDO PETROLEUM COMPANY, INC 250456 WADE MCNEILL SOUTH 1 JACKSON RANCH (YEGUA 5250) DOUBLE PLAY OIL & GAS, INC 257866 WAGNER A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 263810 WAGNER B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 264992 WAGNER GAS UNIT 1H KAWITT (EDWARDS) ABRAXAS PETROLEUM CORPORATION 072897 WAGNER GAS UNIT 2 H KAWITT (EDWARDS) ABRAXAS PETROLEUM CORPORATION 212224 WAITSCHIES, A. 1 FANNIN, NORTH (4100) STRATIGRAPHIC RESEARCH INC. 127473 WALKER LEASE 1 SPEAKS (10000 WILCOX) WOFFORD, C. J. 145256 WALKER LEASE 2 SPEAKS, SW. (WILCOX 11960) WOFFORD, C. J. 127146


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WALKER LEASE 2 SPEAKS, S.W. (5800) WOFFORD, C. J. 116116 WALKER, ACE 2 FT. MERRILL, NORTH (11800) JAMEX, INC. 206754 WALKER, ACE 4 WILDCAT JAMEX, INC. 226827 WALKER, GARLAND H. 1 SPEAKS, SE. (LOWER WILCOX) XTO ENERGY INC. 173094 WALLACE 1 MEYERSVILLE, E. (3000) ROBERTSON RESOURCES, INC. 137536 WALLEK, CLARISSA M. 1 LITTLE JOHN (3970) GASPER RICE RESOURCES, LTD. 093626 WALLIS A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 265660 WALSTON-PETTUS 1 DALLAS HUSKY, NE. (MACKHANK) WELDER EXPLORATION & PROD., INC. 236915 WALSTON-PETTUS A 3 DALLAS HUSKY, NE. (MASSIVE WX) WELDER EXPLORATION & PROD., INC. 242641 WALTER DIETZEL 0001 COLLETOVILLE CREEK (FRIO 3800) B.P. PRODUCTIONS INC. 258242 WALTER RUSCHHAUPT UNIT 1 MISSION VALLEY (10,220) WALTER EXPLORATION COMPANY 208143 WALTER RUSCHHAUPT UNIT 1 MISSION VALLEY, W.(WILCOX 10600) WALTER EXPLORATION COMPANY 207885 WALTER WERNLI 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271138 WALTERS, DOROTHY 1 VIENNA (WILCOX 14,000) DEVON ENERGY PRODUCTION CO, L.P. 187118 WALTERS, DOROTHY 2 VIENNA (WILCOX, MIDDLE U) TEXAS INDEPENDENT EXPLOR LTD. 154952 WALTERS, DOROTHY 3 PROVIDENT CITY (2150) FIELDWOOD ONSHORE LLC 178245 WALTERS, DOROTHY 4-C PROVIDENT CITY (YEGUA 5770) FIELDWOOD ONSHORE LLC 152258 WALTERS, DOROTHY 4-T PROVIDENT CITY (5800) FIELDWOOD ONSHORE LLC 152259 WALTERS, DOROTHY 6 PROVIDENT CITY (FRIO 2750) FIELDWOOD ONSHORE LLC 168751 WALTON 1 RAY (VICKSBURG-HOCKLEY) SYDSON ENERGY, INC. 263092 WALTON 2 RAY (VICKSBURG-HOCKLEY) SYDSON ENERGY, INC. 265536 WARKEN, LENA H. 3 PLACEDO, EAST (5200) BROWN, CLAUDE V. 003649 WARLING 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 265013 WARLING 01 02H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 276392 WARLING 01 03H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 276393 WARLING 01 05H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 273207 WARLING 01 06H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 275911 WARNER 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268095 WARNER 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271806 WARNER 01 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271726 WARNKEN, LENA 2 PLACEDO, EAST (5600 SD.) PEGASUS OPERATING, INC. 109552 WARWAS UNIT 1 ARNECKEVILLE, S (Y-7) RINCON PETROLEUM CORPORATION 274954 WARZECHA 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 266606 WASHINGTON, R. L. EST. 1 MORALES (3850) STRATCO OPERATING CO., INC. 161315 WASKOW (WILCOX) GAS UNIT 2 KAWITT (SECOND ROEDER) STATOIL TEXAS ONSHORE PROP LLC 210503 WASKOW, HENRY A 1 NORDHEIM (WILCOX 9900) FAULCONER, VERNON E., INC. 089213 WATSON 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268524 WATT 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268676 WATT 02 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269376 WATTS-GISLER 1 MISSION VALLEY (10,220) UNION GAS OPERATING COMPANY 177966 WATTS-GISLER 2 MISSION VALLEY, W.(WILCOX 10600) UNION GAS OPERATING COMPANY 203504 WATTS-GISLER 3 MISSION VALLEY, W.(WILCOX 10600) UNION GAS OPERATING COMPANY 203502 WAYNE O. ZENGERLE GAS UNIT 5 GUN POINT, S. (WILCOX, LOWER) URBAN OIL & GAS GROUP, LLC 233643 WAYNE, JOHN 1 TYNAN, EAST (2240) GREAT TEXAS CRUDE INC. 169335 WEARDEN 1 BRUSHY CREEK (WILCOX CONS.) JAMEX, INC. 219217 WEARDEN 1 WEARDEN (4450) VAQUERO OPERATING 230673 WEARDEN 2 BRUSHY CREEK (WILCOX CONS.) JAMEX, INC. 236106 WEARDEN 2 WEARDEN (4450) VAQUERO OPERATING 229496 WEARDEN B 1 C WEARDEN (FRIO) VAQUERO OPERATING 251052 WEARDEN B 1 T WEARDEN (4450) VAQUERO OPERATING 251053 WEARDEN BFE 1 CORDELE, EAST (2800) VAQUERO OPERATING 219455


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WEARDEN CORPORATION 1 WEARDEN (FRIO) FREDCO 211482 WEARDEN CORPORATION 1 A CORDELE, EAST (YEGUA) FREDCO 155072 WEATHERSBEE, JULIA 1 HIGHLINE (13850) HUGHES, DAN A. COMPANY, L.P. 223542 WEATHERSBEE, JULIA 1 HOLZMARK (13800 CONSOLIDATED) HUGHES, DAN A. COMPANY, L.P. 216684 WEATHERSBY 1 MOUNT LUCAS, N.W. (HOCKLEY-A-) DENNIS, L.W. & ASSOCIATES, INC. 107086 WEBB, OLLIE -A- 3 WESER (RECKLAW 7600) ADVANTAGE OIL & GAS, INC. 035035 WEBERNICK ET AL GAS UNIT 1 BRUSHY CREEK (WILCOX CONS.) GCER ONSHORE, LLC 219620 WEBERNICK ET AL GAS UNIT 2 BRUSHY CREEK (WILCOX CONS.) GCER ONSHORE, LLC 221239 WEBERNICK G.U. 1 BRUSHY CREEK (WILCOX CONS.) FFA PETROLEUM SERVICES, INC. 124054 WEBERNICK UNIT 1 BRUSHY CREEK (WILCOX CONS.) TRI-C RESOURCES, LLC 210142 WEBERNICK UNIT 2 BRUSHY CREEK (WILCOX CONS.) TRI-C RESOURCES, LLC 212024 WEBERNICK-GOFF 1 BRUSHY CREEK (WILCOX CONS.) TRI-C RESOURCES, LLC 210147 WEED 1 WEED (LOWER FRIO) HILCORP ENERGY COMPANY 218584 WEED A 1 FRANCITAS, SOUTH (10,100) TEXAS INDEPENDENT EXPLOR LTD. 245483 WEED, J. F. 20 FRANCITAS, SOUTH ( 9,850) TEXAS INDEPENDENT EXPLOR LTD. 234410 WEISE 2 WEESATCHE, WEST (COOK MT.) SUE-ANN OPERATING, L.C. 196686 WEISE, ANNIE 1 WEESATCHE, W. (J SAND) TEMA OIL AND GAS COMPANY 210500 WEISE, BRUCE 1 WEESATCHE, WEST (COOK MT.) COASTLINE EXPLORATION, INC. 212488 WEISE, FRITZ 1 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 208012 WEISE, FRITZ 2 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 212577 WEISE, FRITZ 3 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 243806 WEISE, FRITZ 4 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 231382 WEISE, FRITZ 9 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 236999 WEISE, FRITZ "A" 5 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 236083 WEISE, FRITZ GU "A" 1 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 219641 WEISE, FRITZ GU "A" 3 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 235582 WEISE, FRITZ GU "A" 4 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 232875 WEISE, FRITZ GU "A" 7 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 241841 WEISE, FRITZ GU "A" 10 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 242925 WELDER 1 KATIE WELDER (F-4) B&L EXPLORATION, L.L.C. 275703 WELDER - COLE 1 DANIEL RANCH (YEGUA) SURE FLOW OIL & GAS, INC. 159805 WELDER 'C' 10 SHARPS LAKE, N. (5040) HILCORP ENERGY COMPANY 234179 WELDER 'C' 19 PHIL POWER (4870) HILCORP ENERGY COMPANY 250307 WELDER 'C' 23 23 VIDAURI (2760) HILCORP ENERGY COMPANY 272317 WELDER "A" 53 HEYSER (F-34) XOG OPERATING LLC 172865 WELDER "A" 53 HEYSER (5400 #1) XOG OPERATING LLC 172562 WELDER "B" 3 VIDAURI (2760) HILCORP ENERGY COMPANY 160760 WELDER "B" 3 VIDAURI, WEST (4800) HILCORP ENERGY COMPANY 158433 WELDER "B" 7L KATIE WELDER (K-3) XOG OPERATING LLC 147783 WELDER "B" 10 KATIE WELDER (G-13) XOG OPERATING LLC 216683 WELDER "B" 12U HEYSER (F-34) XOG OPERATING LLC 143119 WELDER "B" 13-L KATIE WELDER (K-3) XOG OPERATING LLC 144064 WELDER "C" 4 VIDAURI (2760) HILCORP ENERGY COMPANY 158719 WELDER "C" 6 PHIL POWER (5050 FRIO) HILCORP ENERGY COMPANY 198832 WELDER "C" 6 PHIL POWER (5200-B) HILCORP ENERGY COMPANY 172720 WELDER "C" 19 PHIL POWER (5200-B) HILCORP ENERGY COMPANY 162521 WELDER "C" 23 PHIL POWER (4870) HILCORP ENERGY COMPANY 224616 WELDER "C" 24 VIDAURI, SW. (5100) HILCORP ENERGY COMPANY 220243 WELDER "J" 36 PHIL POWER (4830) HILCORP ENERGY COMPANY 175887 WELDER B 12 L HEYSER, SE. (6250) XOG OPERATING LLC 133407 WELDER B 14 KATIE WELDER (M-5) XOG OPERATING LLC 140094


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WELDER B 16 HEYSER, SE. (6250) XOG OPERATING LLC 141138 WELDER C 187 LA ROSA, SOUTH (FRIO 8300 B) MCGOWAN WORKING PARTNERS, INC. 209910 WELDER HEIRS "A" A 5 HELEN GOHLKE ( FRIO 3250) FINLEY RESOURCES, INC. 172717 WELDER HEIRS "E" 2 NURSERY, SE. (900) FINLEY RESOURCES, INC. 164642 WELDER J 36 PHIL POWER (5200-B) HILCORP ENERGY COMPANY 166884 WELDER RANCH A 2 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 222477 WELDER-CLIBURN 3 T WELDER RANCH, S. (FRIO 3840) PERFORMANCE DYNAMICS CORP. 060953 WELDER-CLIBURN 3C MOSQUITO POINT, NE. (FRIO G-2) HENDRIK'S HOLDING USA LTD. 061276 WELDER-COLE 3 DANIEL RANCH (YEGUA) SURE FLOW OIL & GAS, INC. 175895 WELDER-TERRELL 5 DEVILS RUN (CHAMBERLAIN 3A) C & E OPERATING, INC. 230170 WELDER, E. H. MRS. 6 HEYSER (5400 #2) XOG OPERATING LLC 090355 WELDER, E. H. MRS. 16 HEYSER (5400 #1) XOG OPERATING LLC 138292 WELDER, J. J., -B- 1 WELDER RANCH (5700) WELDER, JOHN J., ETAL 004680 WELDER, JANE 1 CAMERON-ALLEN (FRIO 4000) SWOPE CORP. 132081 WELDER, M S EST 14 MARCADO CREEK (4290 FRIO) CUMMINS & WALKER OIL CO., INC. 208147 WELDER, M S EST 18 PATRICIA (2800 CATAHOULA) CUMMINS & WALKER OIL CO., INC. 192703 WELDER, M. S. EST. 3 LONNIE GLASSCOCK (OAKVILLE, LO.) CUMMINS & WALKER OIL CO., INC. 172091 WELDER, M. S. EST. 5 NOMECO (4360 FRIO) CUMMINS & WALKER OIL CO., INC. 173804 WELDER, M. S. EST. 10 PATRICIA (2800 CATAHOULA) CUMMINS & WALKER OIL CO., INC. 189327 WELDER, M. S. EST. 20 PATRICIA (MASSIVE CATAHOULA) CUMMINS & WALKER OIL CO., INC. 200773 WELDER, M.S. ESTATE 24 PATRICIA, S. (FRIO 4150) CUMMINS & WALKER OIL CO., INC. 223541 WELDER, MINNIE EST 15 MARCADO CREEK (4290 FRIO) CUMMINS & WALKER OIL CO., INC. 221031 WELDER, MINNIE S. EST 6 NOMECO (4250 FRIO) CUMMINS & WALKER OIL CO., INC. 174973 WELDER, MINNIE S. EST. 9 MARCADO CREEK (4675) CUMMINS & WALKER OIL CO., INC. 226305 WELDER, MRS. E.H. 15 HEYSER (F-34) XOG OPERATING LLC 141533 WELDER, P. H. -A- 6 D HEYSER (5400 #2) XOG OPERATING LLC 090361 WELDER, P. H. -A- 9 HEYSER (5400 #2) XOG OPERATING LLC 100559 WELDER, P. H. -A- 11 HEYSER (5400 #2) XOG OPERATING LLC 090363 WELDER, P. H. -A- 14 HEYSER (5400 #2) XOG OPERATING LLC 090365 WELDER, P. H. -A- 17 HEYSER (F-39) XOG OPERATING LLC 084814 WELDER, P. H. -B- 13 HEYSER (5400 #2) XOG OPERATING LLC 090368 WELDER, P. H. -C- 4 HEYSER (5400 #2) FREDCO 130936 WELDER, P. H. -C- 5 HEYSER (5400 #2) FREDCO 060569 WELDER, P. H. -C- 17 HEYSER (5400 #2) FREDCO 091867 WELDER, P. H. -C- (PF) 1 HEYSER (5400 #2) FREDCO 090801 WELDER, P. H. 'A' 10 HEYSER (5400 #1) XOG OPERATING LLC 140657 WELDER, P. H. 'A' 13 HEYSER (5400 #1) XOG OPERATING LLC 139894 WELDER, P. H. "B" 7 HEYSER (3400) XOG OPERATING LLC 181634 WELDER, P. H.-C- 14 HEYSER (3900) FREDCO 045858 WELDER, P.H -C- 15 HEYSER (5400 #1) FREDCO 131493 WELDER, P.H. -C- 2D HEYSER (3900) FREDCO 128537 WELDER, P.H. -C- 8 HEYSER (GRETA STRINGER) FREDCO 203202 WELDER, P.H. -C- 16 HEYSER (4400) FREDCO 131628 WELDER, P.H. "A" 2 HEYSER (5400 #1) XOG OPERATING LLC 135157 WELDER, P.H. "C" 6 HEYSER (5400 #1) FREDCO 148647 WELDER, P.H. "C" 7 HEYSER (4400) FREDCO 162516 WELDER, P.H. "C" 12 HEYSER (5400 #1) FREDCO 145852 WELDER, PATRICK H. 5 WELDER RANCH (5300) WINRIGHT OIL COMPANY, LLC 265973 WELDER, PATRICK H. -A- 35 HEYSER (F-34) XOG OPERATING LLC 114992 WELDER, PATRICK H. -A- 41 HEYSER (F-40) XOG OPERATING LLC 113506 WELDER, PATRICK H. -A- 51 D HEYSER (3900) XOG OPERATING LLC 112885


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WELDER, PATRICK H. 'A' 6-F HEYSER (5400 #1) XOG OPERATING LLC 138667 WELDER, ROB DUNE ENERGY 1 MCFADDIN (5700) SPINDLETOP DRILLING CO. 207651 WELHAUSEN A 1 WILDCAT PENN VIRGINIA OIL & GAS, L.P. 265202 WENDEL, A. 1R SCHROEDER (FRIO 2830) CORE E & P CORP. 182103 WENDEL, ALONZO ET UX 1 REICHERT (FRIO 3530) CORE E & P CORP. 146730 WENDEL, ALONZO ET UX 2A REICHERT (FRIO 3040) CORE E & P CORP. 145896 WENDT 1 YOAKUM, N. (UPR. WILCOX) SHIDLER, MARK L., INC. 198016 WENDTLAND 1 HELEN GOHLKE, N.E. (FRIO 2970) G E OPERATING, INC. 168758 WERCKLE 1 WEBER, W. (3280) BLUE WING ENERGY, INC. 263022 WERLAND 1 TERRYVILLE, W. (YEGUA 5200) AMPAK OIL COMPANY 132581 WERNLI GU #1 2 KENEDY, SW. (EDWARDS) PIONEER NATURAL RES. USA, INC. 127476 WERNLI GU #1 3 KENEDY, SW. (EDWARDS) PIONEER NATURAL RES. USA, INC. 199006 WERNLI GU 1 4 KENEDY, S.W., (WILCOX 8100) PIONEER NATURAL RES. USA, INC. 264849 WERNLI UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266480 WERNLI UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272413 WERNLI 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268779 WESLEY DEBORD GAS UNIT 1 HOPE (MIOCENE 3300) MOOSE OPERATING CO., INC. 168348 WESSENDORF 2 WESSENDORF (LULING) CRAWFORD HUGHES OPERATING CO. 195877 WESSENDORF 4 L WESSENDORF (LULING) CRAWFORD HUGHES OPERATING CO. 199104 WESSENDORFF GAS UNIT 1 1 SPEARY (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 222947 WESSENDORFF GAS UNIT 1 2 SPEARY (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 249352 WESSENDORFF GAS UNIT 2 1 SPEARY (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 227682 WESSENDORFF GAS UNIT 3 1 SPEARY (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 244741 WESSENDORFF GAS UNIT 4 1 SPEARY (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 244751 WESSENDORFF GAS UNIT 4 2 SPEARY (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 245387 WESSENDORFF GAS UNIT 5 1 SPEARY (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 253110 WESSENDORFF GAS UNIT 5 2 SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 265092 WESSENDORFF GAS UNIT 6 1 SPEARY (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 244762 WESSENDORFF GAS UNIT 6 B 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 266140 WESSENDORFF 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266608 WESSENDORFF 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269540 WESSENDORFF 01 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269548 WESSENDORFF 01 04H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 269547 WESSENDORFF 01 05H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 272373 WESSENDORFF 01 06H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 272383 WESSENDORFF 01 07H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 272374 WESSENDORFF 02 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266609 WESSENDORFF 02 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271720 WESSENDORFF 02 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271423 WESSENDORFF 02 04H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 271207 WESSENDORFF 3-ESCONDIDO CREEK (S B 5H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 271702 WESSENDORFF 4-SLAUGHTER (SA) B 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 270218 WESSENDORFF 4-SLAUGHTER (SA) B 3H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 270219 WESSENDORFF 5-ALEX-WESS 2 (SA) A 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 274434 WESSENDORFF 5-ALEX-WESS 2 (SA) A 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 274290 WESSENDORFF 5-MAGARIGAL (SA) B 3H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 272515 WESSENDORFF 5-WESS 7-WESS 2 (SA) A 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 272512 WESSENDORFF 5-WESSENDORFF 7 (SA) B 3H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 268975 WESSENDORFF 6-WESSENDORFF 1 C 3H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 272513 WESSENDORFF 6-WESSENDORFF 1 (SA) C 4H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 272709 WESSENDORFF 6-WESSENDORFF 1 (SA) C 5H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 275368


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WESSENDORFF 6-WESSENDORFF 1 (SA) D 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 273130 WESSENDORFF 6-WESSENDORFF 1 (SA) D 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 272674 WESSENDORFF 6-WESSENDORFF 8 (SA) C 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 272675 WESSENDORFF 6-WESSENDORFF 8 (SA) C 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 274951 WESSENDORFF3-ESCONDIDO CREEK (SA B 4H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 272511 WESSENDORFF3-ESCONDIDO CREEK (SA B 6H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 271808 WESSON & COX 2 LOLITA (TONEY ZONE) MCGOWAN WORKING PARTNERS, INC. 121471 WEST 1 NURSERY (2800) CAMOIL, INC. 088602 WEST 1 PROVIDENT CITY (FRIO 3260) FIELDWOOD ONSHORE LLC 173015 WEST 1 VIENNA (8450) MAGNUM PRODUCING, LP 187890 WEST 2 VIENNA (8450) MAGNUM PRODUCING, LP 089385 WEST 3 ALBERT, WEST (6800) INLAND OCEAN, INC. 222482 WEST 3 LIMES (WILCOX 7900) INLAND OCEAN, INC. 232116 WEST 3 OAKVILLE (WILCOX CONS.) INLAND OCEAN, INC. 216235 WEST MINERALS 1 SPEAKS, N. (2800 SD) KEBO OIL & GAS, INC. 244743 WEST RANCH -A- 16 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 051199 WEST RANCH -A- 29 WEST RANCH (WARD) HILCORP ENERGY COMPANY 205337 WEST RANCH -A- 42 WEST RANCH (WARD) HILCORP ENERGY COMPANY 203552 WEST RANCH -A- 44 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 087621 WEST RANCH -A- 47 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 214458 WEST RANCH -A- 54 WEST RANCH (TONEY) HILCORP ENERGY COMPANY 059309 WEST RANCH -A- 116 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 085921 WEST RANCH -A- 136 WEST RANCH (WARD) HILCORP ENERGY COMPANY 206871 WEST RANCH -A- 137 WEST RANCH (WARD) HILCORP ENERGY COMPANY 228980 WEST RANCH -A- 140 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200838 WEST RANCH -A- 145 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200921 WEST RANCH -A- 155 WEST RANCH (WARD) HILCORP ENERGY COMPANY 111110 WEST RANCH -A- 162 WEST RANCH (WARD) HILCORP ENERGY COMPANY 199966 WEST RANCH -A- 165 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200825 WEST RANCH -A- 171 WEST RANCH (WARD) HILCORP ENERGY COMPANY 228982 WEST RANCH -A- 172 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200575 WEST RANCH -A- 180 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 110403 WEST RANCH -A- 202 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200756 WEST RANCH -A- 212 WEST RANCH (WARD) HILCORP ENERGY COMPANY 205852 WEST RANCH -A- 213 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200908 WEST RANCH -A- 225 WEST RANCH (WARD) HILCORP ENERGY COMPANY 202825 WEST RANCH -A- 257 U WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 043037 WEST RANCH -A- 287 WEST RANCH (WARD) HILCORP ENERGY COMPANY 184360 WEST RANCH -A- 302 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200209 WEST RANCH -A- 328 WEST RANCH (WARD) HILCORP ENERGY COMPANY 212261 WEST RANCH -A- 330 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 254815 WEST RANCH -A- 333 WEST RANCH (WARD) HILCORP ENERGY COMPANY 228988 WEST RANCH -A- 334 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200909 WEST RANCH -A- 336 WEST RANCH (WARD) HILCORP ENERGY COMPANY 184570 WEST RANCH -A- 347 WEST RANCH (WARD) HILCORP ENERGY COMPANY 184564 WEST RANCH -A- 349 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 271763 WEST RANCH -A- 360 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 220113 WEST RANCH -A- 362 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 214457 WEST RANCH -A- 363 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 229486 WEST RANCH -A- 364 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 214462 WEST RANCH -A- 368 WEST RANCH (WARD) HILCORP ENERGY COMPANY 194726


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WEST RANCH -A- 376 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 214060 WEST RANCH -A- 377 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 214446 WEST RANCH -A- 403 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 212276 WEST RANCH -A- 413 WEST RANCH (WARD) HILCORP ENERGY COMPANY 203538 WEST RANCH -A- 430 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 214463 WEST RANCH -A- 433 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 230810 WEST RANCH -A- 453 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200820 WEST RANCH -A- 472 WEST RANCH (WARD) HILCORP ENERGY COMPANY 190308 WEST RANCH -A- 484 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 207955 WEST RANCH -A- 485 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200526 WEST RANCH -A- 493 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 230655 WEST RANCH -A- 494 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 214470 WEST RANCH -A- 495 WEST RANCH (WARD) HILCORP ENERGY COMPANY 184632 WEST RANCH -A- 502 WEST RANCH (WARD) HILCORP ENERGY COMPANY 205519 WEST RANCH -A- 517 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 214357 WEST RANCH -A- 523 WEST RANCH (WARD) HILCORP ENERGY COMPANY 199049 WEST RANCH -A- 540 H WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 250900 WEST RANCH -A- 541 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 214344 WEST RANCH 'A' 26 WEST RANCH (41-A & 98-A CONS.) HILCORP ENERGY COMPANY 232763 WEST RANCH 'A' 72 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 144535 WEST RANCH 'A' 76 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 147676 WEST RANCH 'A' 109 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 151651 WEST RANCH 'A' 115 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 155493 WEST RANCH 'A' 279 WEST RANCH (DISCORBIS) HILCORP ENERGY COMPANY 245393 WEST RANCH 'A' 288 WEST RANCH (ARMSTRONG) HILCORP ENERGY COMPANY 147983 WEST RANCH 'A' 336 WEST RANCH (MUSQUEZ) HILCORP ENERGY COMPANY 159362 WEST RANCH 'A' 378 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 235328 WEST RANCH 'A' 384 WEST RANCH (ARMSTRONG) HILCORP ENERGY COMPANY 145258 WEST RANCH 'A' 415 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 150476 WEST RANCH 'A' 510 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 149063 WEST RANCH 'A' 520 WEST RANCH (DISCORBIS) HILCORP ENERGY COMPANY 146173 WEST RANCH 'A' 522 WEST RANCH (TONEY) HILCORP ENERGY COMPANY 146234 WEST RANCH 'A' 528 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 155740 WEST RANCH 'A' 531 WEST RANCH (DISCORBIS) HILCORP ENERGY COMPANY 160719 WEST RANCH 'A" 372 WEST RANCH (MENEFEE 5500) HILCORP ENERGY COMPANY 232871 WEST RANCH "A" 9 WEST RANCH (TONEY) HILCORP ENERGY COMPANY 103565 WEST RANCH "A" 13 WEST RANCH (WARD) HILCORP ENERGY COMPANY 194705 WEST RANCH "A" 32 WEST RANCH (VANDERBILT SAND) HILCORP ENERGY COMPANY 139746 WEST RANCH "A" 35 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 212289 WEST RANCH "A" 36 WEST RANCH (WARD) HILCORP ENERGY COMPANY 114055 WEST RANCH "A" 103 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 142731 WEST RANCH "A" 112 WEST RANCH (3800) HILCORP ENERGY COMPANY 137599 WEST RANCH "A" 174 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 158871 WEST RANCH "A" 175 WEST RANCH (DISCORBIS) HILCORP ENERGY COMPANY 158870 WEST RANCH "A" 188 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 139852 WEST RANCH "A" 215 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 133734 WEST RANCH "A" 278 WEST RANCH (WARD) HILCORP ENERGY COMPANY 114885 WEST RANCH "A" 305 WEST RANCH (WARD) HILCORP ENERGY COMPANY 109255 WEST RANCH "A" 342 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 212779 WEST RANCH "A" 344 WEST RANCH (3800) HILCORP ENERGY COMPANY 135480 WEST RANCH "A" 346 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 206746


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WEST RANCH "A" 351 WEST RANCH (ARMSTRONG) HILCORP ENERGY COMPANY 250218 WEST RANCH "A" 357 WEST RANCH (3800) HILCORP ENERGY COMPANY 120538 WEST RANCH "A" 375 L WEST RANCH (WARD) HILCORP ENERGY COMPANY 114005 WEST RANCH "A" 383 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200548 WEST RANCH "A" 384 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 206749 WEST RANCH "A" 386 U WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 136096 WEST RANCH "A" 389 WEST RANCH (WARD) HILCORP ENERGY COMPANY 121517 WEST RANCH "A" 390 WEST RANCH (DISCORBIS) HILCORP ENERGY COMPANY 141106 WEST RANCH "A" 391 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 206745 WEST RANCH "A" 394 WEST RANCH (WARD) HILCORP ENERGY COMPANY 200547 WEST RANCH "A" 399 WEST RANCH (WARD) HILCORP ENERGY COMPANY 221410 WEST RANCH "A" 404 WEST RANCH (MUSQUEZ) HILCORP ENERGY COMPANY 137602 WEST RANCH "A" 429 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 158914 WEST RANCH "A" 447 WEST RANCH (FRIO 449) HILCORP ENERGY COMPANY 097778 WEST RANCH "A" 448 WEST RANCH (DIXON SAND) HILCORP ENERGY COMPANY 109256 WEST RANCH "A" 460 WEST RANCH (WARD) HILCORP ENERGY COMPANY 209721 WEST RANCH "A" 486 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 142732 WEST RANCH "A" 499 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 108139 WEST RANCH "A" 501 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 145768 WEST RANCH "A" 503 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 141390 WEST RANCH "A" 504 WEST RANCH (WARD) HILCORP ENERGY COMPANY 206736 WEST RANCH "A" 513 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 135481 WEST RANCH "A" 519 WEST RANCH (WARD) HILCORP ENERGY COMPANY 156873 WEST RANCH A 349 WEST RANCH (WARD) HILCORP ENERGY COMPANY 190446 WEST RANCH A 361 WEST RANCH (WARD) HILCORP ENERGY COMPANY 167480 WEST RANCH A 446 WEST RANCH (ARMSTRONG) HILCORP ENERGY COMPANY 099700 WEST RANCH A 483 WEST RANCH (MARGINULINA 5000) HILCORP ENERGY COMPANY 109076 WEST RANCH STATE O & G UNIT #1 5 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 155621 WEST RANCH STATE OIL & GAS UNIT1 15 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 148606 WEST RANCH STATE OIL & GAS UNIT1 18 WEST RANCH, S. (FRIO 7200) HILCORP ENERGY COMPANY 262922 WEST RANCH STATE OIL & GAS UNIT2 1 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 079660 WEST RANCH STATE OIL & GAS UT. 2 2 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 156826 WEST RANCH STATE OIL & GAS UT. 2 3 WEST RANCH (NOBLE) HILCORP ENERGY COMPANY 155600 WEST, CLAY 1 KITTY BURNS (10,400) KEBO OIL & GAS, INC. 232942 WEST, CLAY 2 KITTY BURNS ( WILCOX UPPER) KEBO OIL & GAS, INC. 207896 WEST, GEORGE ESTATE 1 GEORGE WEST, WEST (7500 WILCOX) PRIDE ENERGY COMPANY 040776 WEST, GEORGE ESTATE 3 U GEORGE WEST, WEST (8300) MOHICAN OPERATING, L.L.C. 083676 WEST, GEORGE ESTATE 4 GEORGE WEST, WEST (10900 WILCOX) PRIDE ENERGY COMPANY 152273 WEST, GEORGE ESTATE 5 GEORGE WEST, WEST (7300) PRIDE ENERGY COMPANY 155947 WEST, JOHN 1 NURSERY, S. (1000) CAMOIL, INC. 064284 WESTHOFF RANCH 1 TEXANA, N. (FRIO 6175) JL RESOURCES, LLC 269677 WESTHOFF SWD 1 DE WITT (EAGLE FORD SHALE) CWR MANAGMENT LLC 265668 WESTHOFF, A. E. 1 WESTHOFF (COMBINED ASSOCIATED) PINTAIL OIL & GAS, LLC 162254 WESTHOFF, A. E. 2 WESTHOFF (COMBINED ASSOCIATED) PINTAIL OIL & GAS, LLC 155763 WESTHOFF, A. E. 4 WESTHOFF (COMBINED ASSOCIATED) PINTAIL OIL & GAS, LLC 196683 WESTHOFF, A. E. 6 WESTHOFF (COMBINED ASSOCIATED) PINTAIL OIL & GAS, LLC 194618 WESTHOFF, A. E. 7 WESTHOFF (COMBINED ASSOCIATED) PINTAIL OIL & GAS, LLC 200918 WESTHOFF, A. E. 9 WESTHOFF (COMBINED ASSOCIATED) PINTAIL OIL & GAS, LLC 203592 WESTHOFF, A. E. 17 WESTHOFF (COMBINED ASSOCIATED) PINTAIL OIL & GAS, LLC 221934 WESTON 1 SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 254609 WESTON 1 WESTON (PETTUS) VARI ENTERPRISES, INC. 061991


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WESTON 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 274914 WESTON GAS UNIT 1 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270338 WESTON GAS UNIT 1 10H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 270480 WESTON GAS UNIT 1 11H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270393 WESTON GAS UNIT 1 12H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 270975 WESTON-HENKE UNIT 5H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270486 WHD UNIT 1 LAVACA RIVER (4000 FRIO) ZACHRY EXPLORATION, LLC 247325 WHELESS, J. W. 9 PLACEDO (5900, W.) PEGASUS OPERATING, INC. 169737 WHIDDON-SEGER GAS UNIT 1 LINKE (5900) POCO LLC 266292 WHIDDON-SEGER GAS UNIT 2 SKIDMORE, WEST (4500) POCO LLC 250646 WHIDDON-SEGER GAS UNIT 3 LINKE (5900) POCO LLC 271493 WHIPP 1 MARSHALL (MIDDLE WILCOX) ETOCO, L.P. 216661 WHITE 1 COOK (9730) THUNDERBIRD ENERGY, INC. 137095 WHITE, S. L. 1 FRIAR RANCH, S. (CONSOLIDATED) HILCORP ENERGY COMPANY 237085 WHITESIDE 335 1 HYSAW (EDWARDS) HAWTHORN ENERGY PARTNERS, LLC 262992 WHITFIELD 2 NORDHEIM, SW. (11,400) ARCADIA OPERATING, LLC 252967 WHITTINGTON 2 GOLIAD, WEST (WILCOX 12,180) CICO OIL & GAS COMPANY 190498 WHITTINGTON 2 HERNDON (3200 FRIO) VENTEX OPERATING CORP. 221086 WIATREK, G 1 PERSON (EDWARDS) MISSION RIVER SYSTEMS, INC. 150153 WIATREK, P. V. 1 PERSON (EDWARDS) BLACKBRUSH O & G, LLC 045852 WICK GAS UNIT 1 SWEET HOME (EDWARDS) LEWIS PETRO PROPERTIES, INC. 225155 WICK UNIT 1 GOOD HOPE (WICK 10100) BRITANCO, L.L.C. 122617 WICKER, E. H. 1 TEN-TEN (FRIO 3600) DURANGO RESOURCES CORP. 172086 WICKER, E. H. B 1 TEN-TEN (FRIO 3600) DURANGO RESOURCES CORP. 176130 WIEDING 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268549 WIEDING-WESTON UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 266839 WIEDING-WESTON UNIT 2H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 275693 WIEDING-WESTON UNIT AC 1H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 276362 WIEDING-WESTON UNIT AC 2H SUGARKANE (AUSTIN CHALK) MARATHON OIL EF LLC 276368 WIGGINS, A.C. ET AL 1 YORKTOWN (WILCOX 10100) WINN EXPLORATION CO., INC. 111415 WILBUR EDEN 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268843 WILBUR EDEN 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 275609 WILBURN 1 SWINNEY SWITCH (HOCKLEY, UPPER) CHISHOLM OIL & GAS, LC 216118 WILBURN 1C HAILEY (PETTUS) CHISHOLM OIL & GAS, LC 172732 WILBURN 2 SWINNEY SWITCH (HOCKLEY, UPPER) CHISHOLM OIL & GAS, LC 223777 WILBURN-RUTLEDGE UNIT 1 SWINNEY SWITCH (HOCKLEY, UPPER) WELDER EXPLORATION & PROD., INC. 256102 WILCOX HALLETTSVILLE GAS UNIT 1 HALLETSVILLE (SIMMONS) CAPITAL STAR OIL & GAS, INC. 142681 WILD UNIT A 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 264715 WILD UNIT A 2 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 273521 WILD 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 267976 WILHELM, J. B. GAS UNIT 1 WILHELM (FRIO 3100) NORTEX OIL & GAS CORP. 004743 WILKINSON 1 BERCLAIR (LULING) WELDER EXPLORATION & PROD., INC. 259995 WILKINSON 1 BERCLAIR, NORTHWEST (YEGUA 4700) MARWELL PETROLEUM LTD PARTNRSHIP 102450 WILKINSON, BERTHA & CARLYYLE -B- 1 BERCLAIR (2100) WILKINSON, ROBERT P. 000846 WILLBERN 1 PORTER PREMIUM EXPLORATION COMPANY 112738 WILLBERN-BUEGELER UNIT 1H SUGARKANE (EAGLE FORD) MARATHON OIL EF LLC 270334 WILLEFORD, B. R. 1 SCHWARTZ (700) WILLEFORD, BILLY RAY 004101 WILLEKE UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 265472 WILLEKE UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266823 WILLEKE UNIT B 1 DE WITT (EAGLE FORD SHALE) BURLINGTON RESOURCES O & G CO LP 268699 WILLEMIN 1 COLLETOVILLE CREEK (CATAH. 2450) DESANA DEVELOPMENT CORPORATION 198576


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WILLIAM HOLLAND 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268839 WILLIAM KELLY 01 01H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 266610 WILLIAM KELLY 01 02H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 268954 WILLIAM KELLY 01 03H SUGARKANE (EAGLE FORD) PIONEER NATURAL RES. USA, INC. 272352 WILLIAMS 1 HOPE (WILCOX MASSIVE) LAMAY CORPORATION 235534 WILLIAMS 1 MORALES, N. (9250) MAGNUM PRODUCING, LP 224928 WILLIAMS 1 TERRYVILLE (4800) NEW CENTURY EXPLORATION, INC. 216497 WILLIAMS 1D HOPE (WILCOX 8800) MESSY OIL AND GAS, LLC 175395 WILLIAMS A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 263755 WILLIAMS B 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267042 WILLIAMS UNIT 1 MAURITZ, WEST (5600 FRIO) MARQUEE CORPORATION 274197 WILLIAMS, C. M. 1 HOPE (WILCOX MASSIVE) NORTH AMERICAN DRILLING CORP 220624 WILLIAMS, L. D. 2 HEYSER (5400 #2) PONTIAC OIL, INC. 089894 WILLIAMS, L. D. (PF) 1 HEYSER (5400 #2) PONTIAC OIL, INC. 089495 WILLIAMS, MAUDDE ET AL "A" D 27 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 221265 WILLIAMS, MAUDE ET AL -A- 10 LAKE PASTURE (FS-509) HILCORP ENERGY COMPANY 043430 WILLIAMS, MAUDE ET AL -A- 14 LAKE PASTURE (E-221) HILCORP ENERGY COMPANY 086351 WILLIAMS, MAUDE ET AL -A- 67 TOM OCONNOR (4950) HILCORP ENERGY COMPANY 081723 WILLIAMS, MAUDE ET AL -A- 76 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 135290 WILLIAMS, MAUDE ET AL -A- D 54 D LAKE PASTURE (E-221) HILCORP ENERGY COMPANY 090092 WILLIAMS, MAUDE ET AL -A- D 54 J LAKE PASTURE (M-307) HILCORP ENERGY COMPANY 080490 WILLIAMS, MAUDE ET AL -A- D 60 LAKE PASTURE (FS-545) HILCORP ENERGY COMPANY 123972 WILLIAMS, MAUDE ET AL -A- D 75 H LAKE PASTURE (M-330) HILCORP ENERGY COMPANY 002584 WILLIAMS, MAUDE ET AL -A- D 92 D LAKE PASTURE (E-233) HILCORP ENERGY COMPANY 105213 WILLIAMS, MAUDE ET AL -A- D 92 F LAKE PASTURE (E-288) HILCORP ENERGY COMPANY 105214 WILLIAMS, MAUDE ET AL -A- D 92 H LAKE PASTURE (E-293) HILCORP ENERGY COMPANY 105215 WILLIAMS, MAUDE ET AL -A- D103 F LAKE PASTURE (E-282) HILCORP ENERGY COMPANY 086293 WILLIAMS, MAUDE ET AL -A- D106 F LAKE PASTURE (E-288) HILCORP ENERGY COMPANY 083423 WILLIAMS, MAUDE ET AL -A- D107 H LAKE PASTURE (L-200) HILCORP ENERGY COMPANY 116636 WILLIAMS, MAUDE ET AL -A- D108 D LAKE PASTURE (E-293) HILCORP ENERGY COMPANY 080485 WILLIAMS, MAUDE ET AL -A- D108 F LAKE PASTURE (M-295) HILCORP ENERGY COMPANY 064547 WILLIAMS, MAUDE ET AL 'A' 26 TOM O'CONNOR(4900) HILCORP ENERGY COMPANY 163135 WILLIAMS, MAUDE ET AL 'A' 35 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 176646 WILLIAMS, MAUDE ET AL 'A' 60 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 170973 WILLIAMS, MAUDE ET AL 'A' 77 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 171177 WILLIAMS, MAUDE ET AL 'A' D 17 LAKE PASTURE (M-318) HILCORP ENERGY COMPANY 171736 WILLIAMS, MAUDE ET AL 'A' D 20 LAKE PASTURE (M-330) HILCORP ENERGY COMPANY 176369 WILLIAMS, MAUDE ET AL 'A' D 34-D LAKE PASTURE (FS-523) HILCORP ENERGY COMPANY 178482 WILLIAMS, MAUDE ET AL 'A' D 54F LAKE PASTURE (E-235) HILCORP ENERGY COMPANY 171638 WILLIAMS, MAUDE ET AL 'A' D 61 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 161853 WILLIAMS, MAUDE ET AL 'A' D 75D LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 183230 WILLIAMS, MAUDE ET AL 'A' D107 F LAKE PASTURE (E-235) HILCORP ENERGY COMPANY 174397 WILLIAMS, MAUDE ET AL 'A' D120 LAKE PASTURE (M-338) HILCORP ENERGY COMPANY 268051 WILLIAMS, MAUDE ET AL 'A' D136 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 161854 WILLIAMS, MAUDE ET AL "A" 4 TOM O'CONNOR (4910) HILCORP ENERGY COMPANY 215224 WILLIAMS, MAUDE ET AL "A" 7 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 181575 WILLIAMS, MAUDE ET AL "A" 37 TOM OCONNOR (5050, EAST) HILCORP ENERGY COMPANY 210577 WILLIAMS, MAUDE ET AL "A" 78 TOM OCONNOR (4200) HILCORP ENERGY COMPANY 136550 WILLIAMS, MAUDE ET AL "A" D 1G LAKE PASTURE (M-338) HILCORP ENERGY COMPANY 212510 WILLIAMS, MAUDE ET AL "A" D 4 LAKE PASTURE (H-484) HILCORP ENERGY COMPANY 269184 WILLIAMS, MAUDE ET AL "A" D 10 LAKE PASTURE (M-330) HILCORP ENERGY COMPANY 156796


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WILLIAMS, MAUDE ET AL "A" D 12A LAKE PASTURE (C-406) HILCORP ENERGY COMPANY 221844 WILLIAMS, MAUDE ET AL "A" D 15 LAKE PASTURE (E-284) HILCORP ENERGY COMPANY 216805 WILLIAMS, MAUDE ET AL "A" D 16 LAKE PASTURE (C-406) HILCORP ENERGY COMPANY 221964 WILLIAMS, MAUDE ET AL "A" D 22 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 225515 WILLIAMS, MAUDE ET AL "A" D 32F LAKE PASTURE (M-325) HILCORP ENERGY COMPANY 160706 WILLIAMS, MAUDE ET AL "A" D 34 F LAKE PASTURE (E-259) HILCORP ENERGY COMPANY 112901 WILLIAMS, MAUDE ET AL "A" D 59 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 225901 WILLIAMS, MAUDE ET AL "A" D 64 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 206559 WILLIAMS, MAUDE ET AL "A" D 72 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 225051 WILLIAMS, MAUDE ET AL "A" D 81 LAKE PASTURE (M-358) HILCORP ENERGY COMPANY 231414 WILLIAMS, MAUDE ET AL "A" D 84 LAKE PASTURE (FT-690) HILCORP ENERGY COMPANY 239232 WILLIAMS, MAUDE ET AL "A" D 89 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 225068 WILLIAMS, MAUDE ET AL "A" D103D LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 190737 WILLIAMS, MAUDE ET AL "A" D106 H LAKE PASTURE (H-484) HILCORP ENERGY COMPANY 135657 WILLIAMS, MAUDE ET AL "A" D106D LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 191219 WILLIAMS, MAUDE ET AL "A" D107 D LAKE PASTURE (FS-545) HILCORP ENERGY COMPANY 152954 WILLIAMS, MAUDE ET AL "A" D107D LAKE PASTURE (M-358) HILCORP ENERGY COMPANY 235864 WILLIAMS, MAUDE ET AL "A" D110D LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 236183 WILLIAMS, MAUDE ET AL "A" D110H LAKE PASTURE (H-484) HILCORP ENERGY COMPANY 145887 WILLIAMS, MAUDE ET AL "A" D117 LAKE PASTURE (M-330) HILCORP ENERGY COMPANY 244759 WILLIAMS, MAUDE ET AL "A" D122 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 217537 WILLIAMS, MAUDE ET AL "A" D123 LAKE PASTURE (C-406) HILCORP ENERGY COMPANY 156173 WILLIAMS, MAUDE ET AL "A" D128 LAKE PASTURE (C-406) HILCORP ENERGY COMPANY 234919 WILLIAMS, MAUDE ET AL "A" D130 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 212185 WILLIAMS, MAUDE ET AL "A" D138 LAKE PASTURE (E-273) HILCORP ENERGY COMPANY 162401 WILLIAMS, MAUDE ET AL "A" D140 LAKE PASTURE (C-406) HILCORP ENERGY COMPANY 206493 WILLIAMS, MAUDE ET AL "A" D164 LAKE PASTURE (M-358) HILCORP ENERGY COMPANY 226854 WILLIAMS, MAUDE ET AL "A" D166 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 220062 WILLIAMS, MAUDE ET AL "A" D180 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 206550 WILLIAMS, MAUDE ET AL "A" D181 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 206553 WILLIAMS, MAUDE ET AL "A" D184 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 228640 WILLIAMS, MAUDE ET AL "A" D189 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 228530 WILLIAMS, MAUDE ET AL "A" D201R LAKE PASTURE (VICKSBURG 8100) HILCORP ENERGY COMPANY 205741 WILLIAMS, MAUDE ET AL "A" D203 LAKE PASTURE (VICKSBURG 8100) HILCORP ENERGY COMPANY 214334 WILLIAMS, MAUDE ET AL "A" D204 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 239871 WILLIAMS, MAUDE ET AL "A" D54 H LAKE PASTURE (E-244) HILCORP ENERGY COMPANY 158418 WILLIAMS, MAUDE ET AL "B" 10 TOM OCONNOR (5300, EAST) HILCORP ENERGY COMPANY 195374 WILLIAMS, MAUDE ETAL -A- D 80 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 127581 WILLIAMS, MAUDE ETAL -A- D 97 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 129359 WILLIAMS, MAUDE, ETAL "A" D 40 LAKE PASTURE (H-434) HILCORP ENERGY COMPANY 228245 WILLOW CREEK -B- 4 WILLOW CREEK (8000) T-C OIL COMPANY, LLC 234324 WILLOW CREEK-B- 1 WILLOW CREEK (8000) T-C OIL COMPANY, LLC 231739 WILSON HEARD "B" 8 TOM OCONNOR (6300) HILCORP ENERGY COMPANY 261303 WILSON UNIT 1 HOPE (MIOCENE 2550) SUNCOAST TECHNICAL SERVICES INC 269823 WILSON, WILLIETT UNIT 1 SHERIFF EAST (8400) WOOLVERINE PRODUCTION COMPANY 060670 WINDBERG, DALHART 1 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 198681 WINDBERG, DALHART 2 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 199096 WINDBERG, DALHART 3 MARSHALL (MIDDLE WILCOX) HILCORP ENERGY COMPANY 200642 WINDHAM A 1H SUGARKANE (EAGLE FORD) BHP BILLITON PET(TXLA OP) CO 260385 WINFORD EXTENDER CADDIS 1 BRUSHY CREEK (WILCOX -S-1-11200) ARRINGTON OIL&GAS OPERATING LLC 256381 WINFORD EXTENDER CADDIS A 2 BRUSHY CREEK (WILCOX -S-1-11200) ARRINGTON OIL&GAS OPERATING LLC 264415


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WINGO 1 FLASH GORDON (3490) AMPAK OIL COMPANY 219622 WINNIE MADGE GOING GAS UNIT 3 PAWNEE (EDWARDS) PIONEER NATURAL RES. USA, INC. 233614 WINSAUER, ALBERT 1 LITTLE JOHN (2900) GULF SANDS OIL CO. 094553 WITHERS 1 TULETA, WEST (HOCKLEY 3100) INLAND OCEAN, INC. 200550 WITT, THEODORE A. 1 HARRIS (TARA) TX ENERGY SERVICES, LLC 129569 WITTE A 1H DE WITT (EAGLE FORD SHALE) DEVON ENERGY PRODUCTION CO, L.P. 267046 WITTENBURG UNIT 1 JACK STARR (FRIO 4410) ZACHRY EXPLORATION, LLC 234416 WLP 4 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 161248 WLP 5 G LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 046979 WLP G 3 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 187888 WLP G 9 LAKE PASTURE (H-434) T-C OIL COMPANY, LLC 180383 WOFFORD GAS UNIT 1 TYL (WILCOX 9550) WOFFORD, C. J. 187320 WOFFORD, R.L. 1 SLICK (PETTUS) CHISHOLM OIL & GAS, LC 130075 WOLF-COWLING "A" 2 KOERTH (WILCOX 11150) TRIO CONSULTING & MANAGEMENT,LLC 246334 WOLF, WALTER 1 ARNECKEVILLE (WOLF) RAMTEX ENERGY LLC 172067 WOLFF UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266266 WOLFF UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 273491 WOLTERS 1 SLIVA, SOUTHWEST (4070 SAND) CHISHOLM OIL & GAS, LC 139163 WOLTERS 2 SLIVA, SOUTHWEST (STILLWELL) CHISHOLM OIL & GAS, LC 239192 WOLTERS 3 SLIVA, SOUTHWEST (FRIO SUGAREK) CHISHOLM OIL & GAS, LC 246457 WOLTERS 4R SLIVA, SOUTHWEST (2970) CHISHOLM OIL & GAS, LC 246459 WOLTERS, R. & J. 2 SLIVA (3100) NEW HORIZON INVESTMENTS LTD. 004151 WOLTERS, R. E. 1 MINOAK (SLICK 7300) ROCK RESOURCES, INC. 064534 WOMACK, J. Y. 1 MCFADDIN, NORTH (5200) AMERICO ENERGY RESOURCES, LLC 190352 WOMACK, W. 3 MCFADDIN, EAST (5610) AMERICO ENERGY RESOURCES, LLC 183828 WOOD 1 BLANCONIA, S.E. (2700) FREEHOL-E GAS COMPANY 105342 WOOD 1D CLAYTON, NORTH (5780 SLICK) BELLOWS OPERATING CO., L. C. 262140 WOOD 58 SARCO CREEK (2800) CHARRO OPERATING, L.L.C. 181582 WOOD 59 SARCO CREEK (5000) CHARRO OPERATING, L.L.C. 177197 WOOD 67-C SARCO CREEK (5000) CHARRO OPERATING, L.L.C. 182277 WOOD 77 SARCO CREEK (5000) CHARRO OPERATING, L.L.C. 191194 WOOD 81 SARCO CREEK (4100) CHARRO OPERATING, L.L.C. 182275 WOOD 93 SARCO CREEK (4800) CHARRO OPERATING, L.L.C. 212522 WOOD 108 SARCO CREEK (4800) CHARRO OPERATING, L.L.C. 214332 WOOD 'E' 124 SARCO CREEK (4800) CHARRO OPERATING, L.L.C. 272725 WOOD "E" 101 SARCO CREEK (4800) CHARRO OPERATING, L.L.C. 214333 WOOD "H" 87 SARCO CREEK (4800) CHARRO OPERATING, L.L.C. 190438 WOOD F 69 SARCO CREEK (4100) CHARRO OPERATING, L.L.C. 190206 WOOD RIVER RANCH 'D' 4 WOODSBORO (4000) KEBO OIL & GAS, INC. 274196 WOOD RIVER RANCH "D" 1 WOODSBORO (FRIO 6300) KEBO OIL & GAS, INC. 257147 WOOD, CARRIE 34-C SARCO CREEK (2800) CHARRO OPERATING, L.L.C. 160369 WOOD, CARRIE 34-T SARCO CREEK (4500) CHARRO OPERATING, L.L.C. 163054 WOOD, CARRIE G. 15 C SARCO CREEK (4700) CHARRO OPERATING, L.L.C. 004092 WOOD, CARRIE G. 15 T SARCO CREEK (4140, STRAY) CHARRO OPERATING, L.L.C. 053837 WOOD, CARRIE G. 36-C SARCO CREEK (4100) CHARRO OPERATING, L.L.C. 156537 WOOD, CARRIE G. 36-T SARCO CREEK (4240) CHARRO OPERATING, L.L.C. 160543 WOOD, CARRIE G. 55 SARCO CREEK (5000) CHARRO OPERATING, L.L.C. 178798 WOOD, CARRIE G. 63 SARCO CREEK (4800) CHARRO OPERATING, L.L.C. 190198 WOOD, J.L. ET AL 2 WOODSBORO (3100) CUMMINS & WALKER OIL CO., INC. 139305 WOOD, L. EST "C" 5 WOODSBORO, WEST (3500 MIOCENE) CUMMINS & WALKER OIL CO., INC. 175039 WOOD, L. EST. 3 MURPHY L. (3400 MIOCENE) CUMMINS & WALKER OIL CO., INC. 173631


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ WOOD, L. EST. "C" 6 WOODSBORO (5000 A) CUMMINS & WALKER OIL CO., INC. 194696 WOODRUFF 1 NURSERY (YEGUA 5700) EVEREST RESOURCE COMPANY 262893 WOODRUFF 3 NURSERY (YEGUA 5700) RODEO RESOURCES, L.L.C. 169356 WOODRUFF, A. P. 1 LA WARD, NORTH (4700) WELSH OIL & GAS COMPANY 002498 WOODS 1 MAYO (5930) SPINDLETOP OIL & GAS COMPANY 162504 WORLEY, JAMES 1 GOTTSCHALT (PETTUS) PITCHFORK OIL & GAS, INC. 156128 WORSHAM GAS UNIT 1 AUSTIN, W. (UPPER WILCOX B) XTO ENERGY INC. 177614 WOYTEK EDWARDS GAS UNIT 3H WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 224375 WOYTEK-EDWARDS 2 WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 104738 WOYTEK-EDWARDS UNIT 1E WORD, N. (EDWARDS) PIONEER NATURAL RES. USA, INC. 090502 WRIGHT MATERIALS INC 3 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 220033 WRIGHT MATERIALS INC. 1 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 153964 WRIGHT MATERIALS INC. 2 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 233310 WRIGHT MATERIALS INC. 9 LIONS (CORONA CONSOLIDATED) MILAGRO EXPLORATION, LLC 237637 WRIGHT MATERIALS INC. UNIT 1 SLICK, S. (WILCOX "J") NELSON, JAMES L. 096917 WTU HALL 4 TULETA, WEST (9570) WEST TULETA OPERATING CORP. 137905 WTU HALL 5 TULETA, WEST (SLICK-WILCOX 7500) WEST TULETA OPERATING CORP. 169299 WTU ROBINSON 5 TULETA, WEST (SLICK-WILCOX 7900) WEST TULETA OPERATING CORP. 209990 WTU-GILL 1 TULETA, WEST (SLICK-WILCOX 7900) WEST TULETA OPERATING CORP. 255898 WUENSCH 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 265971 WYNNE 2 WILDCAT MATAGORDA RESOURCES CO., INC. 231748 WYNNE GAS UNIT 1 WORD, N. (EDWARDS) BOPCO, L.P. 091213 WYNNE GAS UNIT 2 WORD, N. (EDWARDS) BOPCO, L.P. 094865 WYNNE GAS UNIT 3 WORD, N. (EDWARDS) BOPCO, L.P. 111417 WYNNE GAS UNIT 4 WORD, N. (EDWARDS) BOPCO, L.P. 120138 WYNNE GAS UNIT 5 WORD, N. (EDWARDS) BOPCO, L.P. 139857 WYNNE GAS UNIT 6 WORD, N. (EDWARDS) BOPCO, L.P. 145076 WYNNE GAS UNIT 7 WORD, N. (EDWARDS) BOPCO, L.P. 145245 WYNNE GAS UNIT 8 WORD, N. (EDWARDS) BOPCO, L.P. 153586 WYNNE GAS UNIT 9 WORD, N. (EDWARDS) BOPCO, L.P. 170258 YANTA CATTLE CO. 1 WILDCAT SUNBURST, INC. 215070 YANTA CATTLE CO. A-288 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 260701 YANTA CATTLE CO. A-288 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 259789 YANTA CENTRAL 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 262174 YANTA CENTRAL 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 261900 YANTA, GUSSIE 7 PERSON (EDWARDS) BLACKBRUSH O & G, LLC 196964 YAUSSI B 1 CORDELE, WEST (TRAYLOR, LOWER) N S P OPERATING GROUP LLC 147164 YAUSSI B 20 CORDELE, WEST (JOE) N S P OPERATING GROUP LLC 159960 YAUSSI -A- 3 CORDELE, W. (BUSHMONKEY) N S P OPERATING GROUP LLC 130670 YAUSSI -A- 4 CORDELE, WEST (TREPAS) N S P OPERATING GROUP LLC 131252 YAUSSI -A- 13 C CORDELE (1750 PINHEAD) N S P OPERATING GROUP LLC 131624 YAUSSI -A- 13 T CHULA VISTA (1800' SAND) N S P OPERATING GROUP LLC 132634 YAUSSI -B- B 8 CORDELE (1750 PINHEAD) N S P OPERATING GROUP LLC 130974 YAUSSI -B- B 12 C CORDELE, WEST (STRAY 2250) N S P OPERATING GROUP LLC 129595 YAUSSI -B- B 12 T CORDELE (3190) N S P OPERATING GROUP LLC 129596 YAUSSI "A" 6 CORDELE, W. (CLONE) N S P OPERATING GROUP LLC 141055 YAUSSI "A" 7 CORDELE, WEST (TRAYLOR, UPPER) N S P OPERATING GROUP LLC 139806 YAUSSI B 19 CORDELE, WEST (STRAY 3000) N S P OPERATING GROUP LLC 161316 YAUSSI B SWD 1 CORDELE, W. (3730) N S P OPERATING GROUP LLC 131025 YBANEZ 1 CHARLINE (FORNEY) SANDEL OPERATING COMPANY 107031 YEGUA EAST 1 HOPE (MIOCENE 2970) BIG LAKE CORPORATION 235974


------------------------------------------------------------------------------------------------------------------------------------ LEASE NAME WELL FIELD NAME ORGANIZATION GAS ID NUMBER NAME------------------------------------------------------------------------------------------------------------------------------------ YEGUA EAST 1 C HOPE (FRIO 3079) BIG LAKE CORPORATION 216492 YEGUA EAST 1 T HOPE (YEGUA 4850) BIG LAKE CORPORATION 216501 YEGUA EAST 2 HOPE (MIOCENE 2660) BIG LAKE CORPORATION 232310 YENDREY 1 BIG 12 (YEGUA AY-3) SUE-ANN OPERATING, L.C. 168912 YNA 1 WILDCAT ALTA MESA SERVICES, LP 272997 YORK 1 HOLZMARK (PETTUS 4150) DONNA-LYNNE OIL CO. 199482 YORK 1 HOLZMARK (WHITSETT) DONNA-LYNNE OIL CO. 256923 YORK 2-C REDMAR (HOCKLEY D) AMERICAN SHORELINE, INC. 198930 YOUNG GAS UNIT 1 A 3H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 270568 YOUNG GAS UNIT 1 B 1H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 275682 YOUNG GAS UNIT 1 B 2H SUGARKANE (EAGLE FORD) STATOIL TEXAS ONSHORE PROP LLC 275451 YOUNG, J. W. 1 WESTHOFF RANCH (5400) PRODUCTION SERVICE OIL CORP. 004736 YOUNG, S.E. ET AL 1 COSDEN (Z-12) WELDER EXPLORATION & PROD., INC. 094179 YOUNTS 1 ROLLEM (1ST REAGAN) TRINITY RIVER ENERGY OPER, LLC 181300 YOWARD 8 YOWARD (8275) BAR D OIL CORPORATION 087256 ZAK "A" GAS UNIT 1 WILDCAT PIONEER NATURAL RES. USA, INC. 226385 ZAK GAS UNIT 1 STINGRAY (EDWARDS) PIONEER NATURAL RES. USA, INC. 221074 ZALMAN 1 SPEAKS, SW (MIDDLE WILCOX-CONS.) ARGENT ENERGY (US) HOLDINGS INC. 259997 ZALMAN 3 SPEAKS, SW (MIDDLE WILCOX-CONS.) CRIMSON EXPLORATION OPER., INC. 185148 ZALMAN 4 SPEAKS, SW. (SIMPSON) CRIMSON EXPLORATION OPER., INC. 204004 ZENGERLE 1 BRANDT (WILCOX DEEP) MAGNUM PRODUCING, LP 200152 ZENGERLE 3 ARNECKEVILLE (FRIO 2520) ROBERTSON RESOURCES, INC. 163945 ZENGERLE GAS UNIT 1 MARSHALL (MIDDLE WILCOX) WINN EXPLORATION CO., INC. 227370 ZENGERLE, W.O. 1 ARNECKEVILLE (YEGUA 5275) MODERN EXPLORATION, INC. 098790 ZENGERLE, W.O. 2 ARNECKEVILLE (FRIO 2700) QUEST RESEARCH & DEV. CORP. 129728 ZENGERLE, WAYNE O. 2 ARNECKEVILLE (YEGUA 5290) URBAN OIL & GAS GROUP, LLC 085032 ZENGERLE, WAYNE O. ET UX 1 GUN POINT (WILCOX MIDDLE, 11000) URBAN OIL & GAS GROUP, LLC 124458 ZEPHYR 1 CLAYTON (QUEEN CITY) MODERN EXPLORATION, INC. 274971 ZIEGLER A 1 MONT (WILCOX 10,900) TRIO CONSULTING & MANAGEMENT,LLC 275720 ZIMMER 4 E COLETTO CREEK (2300) PETRA OLEUM CORP. 257202 ZIMMER, J. 2 COLETTO CREEK (2100) PETRA OLEUM CORP. 166822 ZIMMER, JOHN 8 COLETTO CREEK (1450) PETRA OLEUM CORP. 166256 ZIMMER, JOHN 9 COLETTO CREEK (2100) PETRA OLEUM CORP. 053136 ZIMMERMAN 01 01H DE WITT (EAGLE FORD SHALE) PIONEER NATURAL RES. USA, INC. 271351 ZUNIGA GAS UNIT 1 PAWNEE (EDWARDS) STATOIL TEXAS ONSHORE PROP LLC 221593 1893 OIL & GAS, LTD. UNIT A 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266481 1893 OIL & GAS, LTD. UNIT A 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270915 1893 OIL & GAS, LTD. UNIT B 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266282 1893 OIL & GAS, LTD. UNIT B 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271846 1893 OIL & GAS, LTD. UNIT D 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271530 1893 OIL & GAS, LTD. UNIT D 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271609 1893 OIL & GAS, LTD. UNIT E 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 266451 1893 OIL & GAS, LTD. UNIT G 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 268796 1893 OIL & GAS, LTD. UNIT H 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270228 1893 OIL & GAS, LTD. UNIT I 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 270899 1893 OIL & GAS, LTD. UNIT J 1 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 271607 1893 OIL & GAS, LTD., UNIT E 2 SUGARKANE (EAGLE FORD) BURLINGTON RESOURCES O & G CO LP 272137 7Y 1 PROVIDENT CITY (WILCOX A-1) RINCON PETROLEUM CORPORATION 272722

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