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Reservoir Quality of Tertiary & Mesozoic Sandstones, Bristol Bay Basin, Alaska Reservoir Quality of Tertiary & Mesozoic Sandstones, Bristol Bay Basin, Alaska 0.001 0.01 0.1 1 10 100 1000 10000 0 5 10 15 20 25 30 35 40 45 Permeability (md) Milky River Bear Lk ss Bear Lk oc Tachilni Unga Belkofski Stepovak Tolstoi Chignik Herendeen Naknek Shelikof Kialagvik Kaguyak Ugashik Porosity (%) Permeability (md) Sedimentary Basins of Alaska Sedimentary Basins of Alaska Tertiary and Mesozoic Stratigraphy Tertiary and Mesozoic Stratigraphy Proposed Area of 2005 Lease Sale Proposed Area of 2005 Lease Sale Bristol Bay ARCO N. Aleutian COST #1 9957.5’ MD; Stepovak Fm. Φ = 17.2%; K = 0.87 md Amoco Becharof State #1 7915.0’ MD; Stepovak Fm. Φ = 7.1 %; K = 0.12 md Outcrop Herendeen Fm. Φ = 4.6 %; K = 0.004 md ARCO N. Aleutian COST #1 8635.0’ MD; Stepovak Fm. Φ = 31.4 %; K = 709 md ARCO N. Aleutian COST #1 8087.0’ MD; Stepovak Fm. Φ = 32.9 %; K = 2358 md ARCO N. Aleutian COST #1 5234.0’ MD; Unga Fm. Φ = 34.2 %; K = 1607 md ARCO N. Aleutian COST #1 4198.0’ MD; Bear Lake Fm. Φ = 33.7 %; K = 18 md ARCO N. Aleutian COST #1 4197.0’ MD; Bear Lake Fm. Φ = 35.6 %; K = 16 md Amoco Becharof State #1 2734.5’ MD; Milky River Fm. Φ = 36.9 %; K = 3470 md Amoco Becharof State #1 2726.5’ MD; Milky River Fm. Φ = 43.2 %; K = 2040 md Outcrop Tolstoi Fm. Φ = 7.0 %; K = 0.005 md Outcrop Naknek Fm. Φ = 6.3 %; K = 3.38 md Outcrop Shelikof Fm. Φ = 3.6 %; K = 0.01 md Outcrop Kialagvik Fm. Φ = 9.7 %; K = 0.005 md Kenneth P. Helmold State of Alaska Department of Natural Resources Division of Oil and Gas 550 West 7 th Avenue, Suite 800 Anchorage, AK 99501-3560 907-269-8673 [email protected] Donald W. Brizzolara Donald W. Brizzolara State of Alaska State of Alaska Department of Natural Resources Department of Natural Resources Division of Oil and Gas Division of Oil and Gas 550 West 7 550 West 7 th th Avenue, Suite 800 Avenue, Suite 800 Anchorage, AK 99501 Anchorage, AK 99501 - - 3560 3560 907 907 - - 269 269 - - 8768 8768 [email protected] [email protected] For more information contact: Reservoir Sandstones Non-reservoir Sandstones B B BB B BBB B BB BBB B B BBB B BBBB B B B J JJ J JJ J J J J J J J J J J J JJ J JJJJ J J J JJ J J J JJ JJJ J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J FF F F F F F F FF F F F F FF F F F F F F F F F J J J JJJ J J JJJJ JJ J J JJ J J JJJ J J J J JJ J JJ JJ JJJ J JJ JJ JJ J J J JJJ JJ J J J J J JJJJ J J J J J J JJ J J J J JJ J J JJJJJJ JJ J J J J JJ JJ J J J J JJ J JJJ J J J JJ J JJ JJ J J J JJJ J J J J J JJ J JJ JJ JJ J J J J J J JJJ JJ JJ JJ J J J JJ JJ J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J F F F F F F F F F FF F F F F F F F F F F F F F F FF F F F FF F F F F F F F F F FF F F F F FFF FF F F F F FF FF F FF F F F F FF FF F F F FF F F F F F F F F F F F F F F F F F F F 18000 16000 14000 12000 10000 8000 6000 4000 2000 0 0 5 10 15 20 25 30 35 40 45 Porosity (%) B Milky River J Bear Lake F Unga J Stepovak F Tolstoi B BB B B BBBB BB BBB BB B B BB B BB B B B J J J J JJ J JJ J J J J J JJ J J J J JJ J J J J JJ J J J JJ J J JJJ J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J FF FF F FF F F F FF F F F F F F F F F F F F F F J JJ J J J J J J J J JJ J J J J J J J J J JJ J JJ J J J JJ JJ J J J J J J JJ J JJ J JJ J J J JJ J J J J J J J J J J J J JJ J J J J J J J J J J J J JJ J J JJ J J J J J JJ J J J J J J J J J J J J JJJ JJ J J JJ JJ JJJ J JJ J J J J J J J J J J J J J J J J J J J J J J J J J JJ JJ J J J J J JJ J J JJ J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J J F F FF F F F F F F F F F F F F F F F F F F F F F F FF F F FF F F F F F F FF F F F FF F F FF F F F F F F F F F F F FF F F F F F F F F F F F F F F F F F 18000 16000 14000 12000 10000 8000 6000 4000 2000 0 0.01 0.1 1 10 100 1000 10000 Permeability (md) B Milky River J Bear Lake F Unga J Stepovak F Tolstoi Porosity/Permeability vs Depth Reservoir Sandstones • High quality in Mio/Pliocene • Minor cementation and compaction • Fine grained to conglomeratic • High to moderate quartz component • Low Dmax Non-reservoir Sandstones • Mostly Eocene and older • High volcanic component • Arkosic composition • Zeolite cementation • Severe compaction • High Dmax Becharof #1

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Page 1: Reservoir Quality of Tertiary & Mesozoic Sandstones ...dog.dnr.alaska.gov/Documents/Publications/Leasing/AlaskaPeninsula/...Reservoir Quality of Tertiary & Mesozoic Sandstones, Bristol

Reservoir Quality of Tertiary & Mesozoic Sandstones, Bristol Bay Basin, AlaskaReservoir Quality of Tertiary & Mesozoic Sandstones, Bristol Bay Basin, Alaska

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Milky RiverBear Lk ssBear Lk ocTachilniUngaBelkofskiStepovakTolstoiChignikHerendeenNaknekShelikofKialagvikKaguyakUgashik

Porosity (%)

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Sedimentary Basins of AlaskaSedimentary Basins of Alaska

Tertiary and Mesozoic StratigraphyTertiary and Mesozoic Stratigraphy

Proposed Area of 2005 Lease SaleProposed Area of 2005 Lease Sale

Bristol Bay

ARCO N. Aleutian COST #19957.5’ MD; Stepovak Fm.Φ = 17.2%; K = 0.87 md

Amoco Becharof State #17915.0’ MD; Stepovak Fm.Φ = 7.1 %; K = 0.12 md

OutcropHerendeen Fm.Φ = 4.6 %; K = 0.004 md

ARCO N. Aleutian COST #18635.0’ MD; Stepovak Fm.Φ = 31.4 %; K = 709 md

ARCO N. Aleutian COST #18087.0’ MD; Stepovak Fm.Φ = 32.9 %; K = 2358 md

ARCO N. Aleutian COST #15234.0’ MD; Unga Fm.Φ = 34.2 %; K = 1607 md

ARCO N. Aleutian COST #14198.0’ MD; Bear Lake Fm.Φ = 33.7 %; K = 18 md

ARCO N. Aleutian COST #14197.0’ MD; Bear Lake Fm.Φ = 35.6 %; K = 16 md

Amoco Becharof State #12734.5’ MD; Milky River Fm.Φ = 36.9 %; K = 3470 md

Amoco Becharof State #12726.5’ MD; Milky River Fm.Φ = 43.2 %; K = 2040 md

OutcropTolstoi Fm.Φ = 7.0 %; K = 0.005 md

OutcropNaknek Fm.Φ = 6.3 %; K = 3.38 md

OutcropShelikof Fm.Φ = 3.6 %; K = 0.01 md

OutcropKialagvik Fm.Φ = 9.7 %; K = 0.005 md

Kenneth P. HelmoldState of AlaskaDepartment of Natural ResourcesDivision of Oil and Gas550 West 7th Avenue, Suite 800Anchorage, AK [email protected]

Donald W. BrizzolaraDonald W. BrizzolaraState of AlaskaState of AlaskaDepartment of Natural ResourcesDepartment of Natural ResourcesDivision of Oil and GasDivision of Oil and Gas550 West 7550 West 7thth Avenue, Suite 800Avenue, Suite 800Anchorage, AK 99501Anchorage, AK [email protected]@dnr.state.ak.us

For more information contact:

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Porosity/Permeability vs Depth

Reservoir Sandstones• High quality in Mio/Pliocene• Minor cementation and compaction• Fine grained to conglomeratic• High to moderate quartz component• Low Dmax

Non-reservoir Sandstones• Mostly Eocene and older• High volcanic component• Arkosic composition• Zeolite cementation• Severe compaction• High Dmax

Becharof #1

Provenance of Late Paleozoic-Mesozoic sandstones, Taimyr

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