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Cook Inlet 2011 Assessment, OFR 2011-1237

	The U.S. Geological Survey (USGS) has completed an assessment of the volumes of undiscovered, technically recoverable oil and gas resources in conventional and continuous accumulations in Cook Inlet. The assessment used a geology-based methodology and results from new scientific research by the USGS...
Sunday, January 01, 2012  Type: Publication

U.S. Geological Survey Information Relevant to the U.S. Geological Survey Assessment of the Middle Devonian Marcellus Shale of the Appalachian Basin Province, 2011

	The USGS recently assessed the potential for natural gas resources in the Middle Devonian Marcellus Shale of the Appalachian Basin Province. The Marcellus Shale was assessed as a continuous gas accumulation using a methodology identical to that used in the assessment of shale...
Sunday, November 27, 2011  Type: Publication

New U.S. Geological Survey Method for the Assessment of Reserve Growth

	Reserve growth is defined as the estimated increases in quantities of crude oil, natural gas, and natural gas liquids that have the potential to be added to remaining reserves in discovered accumulations through extension, revision, improved recovery efficiency, and additions of new pools or...
Thursday, November 17, 2011  Type: Publication

Formulation of a correlated variables methodology for assessment of continuous gas resources with an application to the Woodford play, Arkoma Basin, eastern Oklahoma

	USGS paper published in the Geological and Mining Institute of Spain, Boletín Geológico y Minero.  New experimental methodology is illustrated by evaluating a gas play in the Woodford Shale in the Arkoma Basin of Oklahoma. …
Thursday, November 03, 2011  Type: Outside Publication

Evolution of overpressured and underpressured oil and gas reservoirs, Anadarko Basin of Oklahoma, Texas, and Kansas—Overview

	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...
Thursday, September 29, 2011  Type: Publication

Undiscovered Petroleum Resources for the Woodford Shale and Thirteen Finger Limestone–Atoka Shale Assessment Units, Anadarko Basin

	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 (1) Devonian Woodford Shale Gas AU...
Thursday, September 29, 2011  Type: Publication

Assessment of Undiscovered Oil and Gas Resources of the Devonian Marcellus Shale of the Appalachian Basin Province

	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.
Tuesday, August 23, 2011  Type: Press Release

USGS Methodology for Assessing Continuous Petroleum Resources

	The U.S. Geological Survey (USGS) has developed a new 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...
Thursday, August 11, 2011  Type: Publication

Geodatabase of Wyoming statewide oil and gas drilling activity to 2010

	The U.S. Geological Survey (USGS) compiled a geographic information system (GIS) of Wyoming statewide historical oil and gas drilling activity for the Wyoming Landscape Conservation Initiative (WLCI). The WLCI is representative of the partnerships being formed by the USGS with other Department of...
Thursday, August 11, 2011  Type: Publication

Gas, Oil, and Water Production from Wattenberg Field in the Denver Basin, Colorado

	Tight gas sandstones are now an important contributor to gas production in the United States. Despite this success, many questions remain concerning the nature of fluids in tight (low-permeability) gas systems...
Tuesday, August 09, 2011  Type: Publication

Overview

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.

Christopher Schenk
Project Chief

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