Energy Resources Program
Wednesday, February 08, 2012
USGS Publication: Fact Sheet 2012–3003
Using a geology-based assessment methodology, the U.S. Geological Survey assessed means of (1) 141 million barrels of oil (MMBO), 502 billion cubic feet of natural gas (BCFG), and 16 million barrels of natural gas liquids (MMBNGL) in the conventional Eagle Ford Updip Sandstone Oil and Gas Assessment Unit (AU); (2) 853 MMBO, 1,707 BCFG, and 34 MMBNGL in the continuous Eagle Ford Shale Oil AU; and (3) 50,219 BCFG and 2,009 MMBNGL in the continuous Eagle Ford Shale Gas AU in onshore lands and State waters of the Gulf Coast.
Sunday, January 01, 2012
USGS Publication: Open-File Report 2011–1237
In the Cook Inlet region, the USGS estimates mean undiscovered volumes of nearly 600 million barrels of oil, about 19 trillion cubic feet of gas, and about 46 million barrels of natural gas liquids.
Sunday, November 27, 2011
USGS Publication: Open-File Report 2011–1298
The USGS recently assessed the potential for natural gas resources in the Middle Devonian Marcellus Shale of the Appalachian Basin Province. This preliminary report provides some additional geologic information used in the Marcellus Shale assessment.
Thursday, November 17, 2011
USGS Publication: Scientific Investigations Report 2011–5163A new U.S. Geological Survey method was developed to assess the reserve-growth potential of technically recoverable crude oil and natural gas to be added to reserves under proven technology currently in practice within the trend or play, or which reasonably can be extrapolated from geologically similar trends or plays. This method currently is in use to assess potential additions to reserves in discovered fields of the United States.
Thursday, November 03, 2011
Outside Publication: Geological and Mining Institute of Spain, Boletín Geológico y Minero
USGS paper published in the Geological and Mining Institute of Spain, Boletín Geológico y Minero. New experimental methodology for assessing continuous gas resources is illustrated by evaluating a gas play in the Woodford Shale in the Arkoma Basin of Oklahoma.
Thursday, September 29, 2011
USGS Publication: Open-File Report 2011–1245
Departures of resistivity logs from a normal compaction gradient indicate that overpressure previously extended north of the present-day overpressured zone. These indicators of paleopressure, which are strongest in the deep basin, are mapped to the Kansas-Oklahoma border in shales of Desmoinesian age.
USGS Publication: Open-File Report 2011–1242
In 2010 the USGS assessed undiscovered oil and gas resources for the Anadarko Basin Province of Colorado, Kansas, Oklahoma, and Texas. The assessment included three continuous (unconventional) assessment units (AU). Mean undiscovered resources for the Devonian Woodford Shale Gas AU are about 16 trillion cubic feet of gas (TCFG) and 192 million barrels of natural gas liquids (MMBNGL); Woodford Shale Oil AU are 393 million barrels of oil (MMBO), 2 TCFG, and 59 MMBNGL; and Pennsylvanian Thirteen Finger Limestone–Atoka Shale Gas AU are 6.8 TCFG and 82 MMBNGL.
Tuesday, August 23, 2011
Press Release & Publication
In 2011, the USGS completed an assessment of the undiscovered oil and gas potential of the Devonian Marcellus Shale within the Appalachian Basin Province of the eastern United States. The Marcellus Shale contains about 84 trillion cubic feet of undiscovered, technically recoverable natural gas and 3.4 billion barrels of undiscovered, technically recoverable natural gas liquids according to the new assessment.
Thursday, August 11, 2011
USGS Publication: Open-File Report 2011–1167The U.S. Geological Survey (USGS) has developed a revised quantitative methodology for assessing resources in continuous (unconventional) petroleum deposits. Continuous petroleum resources include shale gas, coalbed gas, and other oil and gas deposits in low-permeability (“tight”) reservoirs.
The USGS Energy Resources Program provides periodic assessments of the oil and natural gas endowment of the United States. New, prioritized, assessment results, as part of the Energy Policy and Conservation Act (EPCA) and the current National Assessment are shown above. Additional EPCA and priority basin assessment results will be posted as they become available.
Inventory of Onshore Federal Oil and Natural Gas Resources and Restrictions to Their Development (Phase III Inventory - Onshore United States)
Scientific Inventory of Onshore Federal Lands' Oil and Gas Resources and the Extent and Nature of Restrictions or Impediments to Their Development (EPCA Phase II)
Scientific Inventory Onshore Federal Lands' Oil and Gas Resources and Reserves and the Extent and Nature of Restrictions or Impediments to their Development (EPCA Phase I)
Bureau of Ocean Energy Management (BOEM) Resource Assessment
American Association of Petroleum Geologists
Bureau of Land Management
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