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Basin-centered gas systems: examples (view source)
Revision as of 22:47, 15 January 2015
, 22:47, 15 January 2015no edit summary
===General characteristics of the Lower Silurian Clinton-Medina-Tuscarora, Appalachian Basin BCGS===
===General characteristics of the Lower Silurian Clinton-Medina-Tuscarora, Appalachian Basin BCGS===
* Area: Clinton-Medina part is 45,000 mi<sup>2</sup> (116,550 km<sup>2</sup>); Tuscarora part is 30,000 mi<sup>2</sup> (77,700 km<sup>2</sup>).
* Area: Clinton-Medina part is 45,000 mi<sup>2</sup> (116,550 km<sup>2</sup>); Tuscarora part is 30,000 mi<sup>2</sup> (77,700 km<sup>2</sup>).
* Source rock: Ordovician Utica Shale.<ref name=Coleetal_1987>Cole, G. A., R. J. Drozd, R. A. Sedivy and H. I. Helpern, 1987, [http://archives.datapages.com/data/bulletns/1986-87/data/pg/0071/0007/0750/0788.htm Organic geochemistry and source-rock correlations, Paleozoic of Ohio]: AAPG Bulletin, v. 71, p. 788-809.</ref><ref name=Drozdandcole_1994>Drozd, R. J., and G. A. Cole, 1994, [http://archives.datapages.com/data/specpubs/methodo2/data/a077/a077/0001/0350/0387.htm Point Pleasant-Brassfield petroleum system, Appalachian basin, USA], ''in'' L. B. Magoon and W. G. Dow, eds., The petroleum system-from source to trap: AAPG Memoir 60, p. 387-398.</ref><ref name=Burrussandryder_1998 /><ref name=Ryderetal_1998 /> The Utica Shale contains type II kerogen and is thermally overmature (>1.3% R<sub>o</sub>).
* Source rock: Ordovician Utica Shale.<ref name=Coleetal_1987>Cole, G. A., R. J. Drozd, R. A. Sedivy and H. I. Helpern, 1987, [http://archives.datapages.com/data/bulletns/1986-87/data/pg/0071/0007/0750/0788.htm Organic geochemistry and source-rock correlations, Paleozoic of Ohio]: AAPG Bulletin, v. 71, p. 788-809.</ref><ref name=Drozdandcole_1994>Drozd, R. J., and G. A. Cole, 1994, [http://archives.datapages.com/data/specpubs/methodo2/data/a077/a077/0001/0350/0387.htm Point Pleasant-Brassfield petroleum system, Appalachian basin, USA], ''in'' L. B. Magoon and W. G. Dow, eds., The petroleum system-from source to trap: AAPG Memoir 60, p. 387-398.</ref><ref name=Burrussandryder_1998>Burruss, R. C., and R. T. Ryder, 1998, Composition of crude oil and natural gas produced from 10 wells in the Lower Silurian "Clinton" sands, Trumbull County, Ohio: U.S. Geological Survey Open-file Report 98-799, 50 p.</ref><ref name=Ryderetal_1998>Ryder, R. T., R. C. Burruss, and J. R. Hatch, 1998, [http://archives.datapages.com/data/bulletns/1998/03mar/0412/0412.htm Black shale source rocks and oil generation in Cambrian and Ordovician of the central Appalachian basin, USA]: AAPG Bulletin, v. 82, p. 412-441.</ref> The Utica Shale contains type II kerogen and is thermally overmature (>1.3% R<sub>o</sub>).
* Generation-migration-accumulation: Late Devonian-Early Mississippian (370-320 Ma)<ref name=Drozdandcole_1994 /><ref name=Laughreyandharper_1996 /><ref name=Nuccioetal_1997 /><ref name=Ryderetal_1998 /><ref name=Ryderandzagorski_2003 />
* Generation-migration-accumulation: Late Devonian-Early Mississippian (370-320 Ma)<ref name=Drozdandcole_1994 /><ref name=Laughreyandharper_1996>Laughrey, C. D., and J. A. Harper, 1996, Play Obe: Upper Ordovician Bald Eagle Formation fractured play, ''in'' J. B. Roen and B. J. Walker, eds., The atlas of major Appalachian gas plays: West Virginia Geological and Economic Survey Publication V-25, p. 164-167.</ref><ref name=Nuccioetal_1997>Nuccio, V. F., C. J. Wandrey, R. T. Ryder, and A. G. Harris, 1997, Thermal maturity and petroleum generation of Middle Ordovician black shale source rocks, central Appalachian basin-controls on oil and gas in Lower Silurian low permeability sandstone reservoirs (abs.): AAPG Bulletin v. 81, p. 1560.</ref><ref name=Ryderetal_1998 /><ref name=Ryderandzagorski_2003 />
* Reservoir rocks: Lower Silurian Clinton-Medina in eastern Ohio and western Pennsylvania and Tuscarora Sandstone in central Pennsylvania. The reservoir interval ranges in thickness from 100 to 600 ft (30-183 m).<ref name=Ryderandzagorski_2003 /> The thermal maturity of the reservoir ranges from 1.1 to 2.0% R<sub>o</sub>.<ref name=Wandreyetal_1997 />
* Reservoir rocks: Lower Silurian Clinton-Medina in eastern Ohio and western Pennsylvania and Tuscarora Sandstone in central Pennsylvania. The reservoir interval ranges in thickness from 100 to 600 ft (30-183 m).<ref name=Ryderandzagorski_2003 /> The thermal maturity of the reservoir ranges from 1.1 to 2.0% R<sub>o</sub>.<ref name=Wandreyetal_1997 />
* Porosity: 5-10%<ref name=Ryder_1998 /><ref name=Ryderandzagorski_2003 />
* Porosity: 5-10%<ref name=Ryder_1998 /><ref name=Ryderandzagorski_2003 />