USGS Energy Resources Program provides periodic assessments of the oil and natural gas endowment of the United States and the World. This website provides access to new, prioritized, assessment results and supporting data for the United States, as part of the Energy Policy and Conservation Act (EPCA).

Energy and Minerals Mission Area, Energy Resources Program, Central Energy Resources Science Center

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August 6, 2024

United States Assessments of Undiscovered Oil and Gas Resources

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Below are data or web applications associated with this project.

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December 19, 2019

LAS digital data files for the U.S.Geological Survey Alcova AR-1-13 core hole, Natrona County, Wyoming

In 2013 the U.S. Geological Survey (USGS) drilled and logged a continuous core located on the northeast flank of the Alcova anticline in the southeastern part of the Wind River Basin, Wyoming to evaluate the source rock potential of the Lower and lowermost Upper Cretaceous marine shales (fig. 1). The well, named the Alcova Reservoir AR-1-13, was spud in the lower part of the Frontier Formation and

Central Energy Resources Science Center

Below are publications associated with this project.

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October 20, 2015

U.S. Geological Survey assessments of continuous (unconventional) oil and gas resources, 2000 to 2011

From 2000 to 2011, the U.S. Geological Survey conducted 139 quantitative assessments of continuous (unconventional) oil and gas accumulations within the United States. This report documents those assessments more fully than previously done by providing detailed documentation of both the assessment input and output. This report also compiles the data into spreadsheet tables that can be more readily

Authors

Energy Resources Program, Central Energy Resources Science Center

December 22, 2014

Map of assessed coalbed-gas resources in the United States, 2014

This report presents a digital map of coalbed-gas resource assessments in the United States as part of the U.S. Geological Survey’s (USGS) National Assessment of Oil and Gas Project. Using a geology-based assessment methodology, the USGS quantitatively estimated potential volumes of undiscovered, technically recoverable natural gas resources within coalbed-gas assessment units (AUs). This is the t

Authors

Laura R. H. Biewick

Energy Resources Program, Central Energy Resources Science Center

August 18, 2009

Total Petroleum Systems and Geologic Assessment of Oil and Gas Resources in the Powder River Basin Province, Wyoming and Montana

The U.S. Geological Survey completed an assessment of the undiscovered oil and gas potential of the Powder River Basin in 2006. The assessment of undiscovered oil and gas used the total petroleum system concept, which includes mapping the distribution of potential source rocks and known petroleum accumulations and determining the timing of petroleum generation and migration. Geologically based, it

May 3, 2008

Areas of historical oil and gas exploration and production in the United States

This report contains maps and associated spatial data showing historical oil and gas exploration and production in the United States. Because of the proprietary nature of many oil and gas well databases, the United States was divided into cells one-quarter square mile and the production status of all wells in a given cell was aggregated. Base-map reference data are included, using the U.S. Geologi

Authors

Laura Biewick

Energy Resources Program, Central Energy Resources Science Center

January 1, 2008

Assessment of the Mowry Shale and Niobrara Formation as Continuous Hydrocarbon Systems, Powder River Basin, Montana and Wyoming

A recent U.S. Geological Survey (USGS) oil and gas assessment of the Powder River Basin , Wyoming and Montana, identified the Upper Cretaceous Mowry Shale and Niobrara Formation as the primary hydrocarbon sources for Cretaceous conventional and unconventional reservoirs. Cumulative Mowry-sourced petroleum production is about 1.2 BBO (billion barrels of oil) and 2.2 TCFG (trillion cubic feet of gas

Authors

Lawrence O. Anna, Troy A. Cook

Energy Resources Program, Central Energy Resources Science Center

January 1, 2006

Assessment of undiscovered oil and gas resources of the Powder River Basin Province of Wyoming and Montana— 2006 update

Using a geology-based assessment method, the U.S. Geological Survey estimated means of 16.6 trillion cubic feet of undiscovered natural gas, 639 million barrels of undiscovered oil, and 131 million barrels of natural gas liquids in the Powder River Basin Province.

Authors

Energy Resources Program

July 1, 2004

Total petroleum system and assessment of coalbed gas in the Powder River Basin Province, Wyoming and Montana

No abstract available.

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December 1, 2002

Assessment of undiscovered oil and gas resources of the Powder River basin Province of Wyoming and Montana, 2002

No abstract available.

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March 1, 1995

1995 National Assessment of United States oil and gas resources: Results, methodology, and supporting data

This revised CD-ROM summarizes the results, released in 1995, of the 3-year study of the oil and gas resources of the onshore and state waters of the United States. Minor errors in the original DDS-30 (listed in DDS-35 and DDS-36) are corrected in this revised version and in the data files now released in DDS-35 and DDS-36. Estimates are made of technically recoverable oil, including measured (pro

Authors

Donald L. Gautier, Gordon Dolton, Kenneth I. Takahashi, Katharine L. Varnes

Energy Resources Program, Central Energy Resources Science Center

Overview

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas potential of the Powder River Basin Province 5033.