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United States Assessments of Undiscovered Oil and Gas Resources

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By Central Energy Resources Science Center August 6, 2024

Explore US Undiscovered Oil and Gas Assessment Provinces

Assessment results, publications, data and more are available

click here to launch

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).

Assessment Overview

Image shows a map of the assessment units of the 2018 Delaware Basin oil and gas assessment

The USGS assesses potential for undiscovered oil and gas resources in priority geologic provinces in the United States.  This website highlights conventional and unconventional (continuous) oil and gas assessments.

Summary of Continuous Assessments

Interactive map and chart highlighting USGS Domestic Continuous (Unconventional) Oil & Gas Assessments, 2000-Present

This applications shows maps and tables of all continuous assessments in the United States.

Click here to launch

Recent Assessments

Below are the latest US Assessments:

Browse Assessments

National Oil and Gas Assessment Methodology

The U.S. Geological Survey Energy Resources Program assesses the potential for undiscovered oil and gas resources in priority geologic provinces in the United States and around the world (click here for information about World Oil and Gas Assessments). Two methodologies are used by the USGS; one for assessing conventional oil and gas resources and one for assessing unconventional (continuous) oil and gas resources (such as shale gas and coalbed gas).  USGS publications detailing and explaining the conventional and continuous assessment methodologies are provided below.  These methodologies have been subjected to rigorous peer reviews by non federal panels, and the two panel reports are provided on this page.

 

Conventional Resources

USGS Reports

U.S. Geological Survey Assessment Concepts for Conventional Petroleum Accumulations
By James W. Schmoker and T.R. Klett

U.S. Geological Survey Input-Data Form and Operational Procedure for the Assessment of Conventional Petroleum Accumulations
By T.R. Klett, James W. Schmoker, and Ronald R. Charpentier

A Monte Carlo Simulation Method for the Assessment of Undiscovered, Conventional Oil and Gas
By Ronald R. Charpentier and T.R. Klett

 

Continuous Resources

USGS Reports

U.S. Geological Survey Assessment Concepts for Continuous Petroleum Accumulations
By James W. Schmoker

U.S. Geological Survey Input-Data Form and Operational Procedure for the Assessment Of Continuous Petroleum Accumulations, 2002
By T.R. Klett and James W. Schmoker

Analytic Resource Assessment Method for Continuous Petroleum Accumulations—The ACCESS Assessment Method
By Robert A. Crovelli

FORSPAN Model Users Guide
By T.R. Klett, and Ronald R. Charpentier
 

Methodology Revisions

Improved USGS methodology for assessing continuous petroleum resources.
Charpentier, R.R., and Cook, T.A.

Applying Probabilistic Well-Performance Parameters to Assessments of Shale-Gas Resources
By Ronald R. Charpentier and Troy Cook

Assembling Probabilistic Performance Parameters of Shale-Gas Wells
By Cook, Troy, and Charpentier, R.R.

USGS Methodology for Assessing Continuous Petroleum Resources
By Ronald R. Charpentier and Troy Cook

New U.S. Geological Survey Method for the Assessment of Reserve Growth
By Timothy R. Klett, Emil D. Attanasi, Ronald R. Charpentier, Troy A. Cook, Philip A. Freeman, Donald L. Gautier, Phuong A. Le, Robert T. Ryder, Christopher J. Schenk, Marilyn E. Tennyson, and Mahendra K. Verma (Reserve Growth Assessment Team)

Variability of Distributions of Well-Scale Estimated Ultimate Recovery for Continuous (Unconventional) Oil and Gas Resources in the United States 
By U.S. Geological Survey Oil and Gas Assessment Team

Peer Review

American Association of Petroleum Geologists Committee on Resource Evaluation (CORE) Subcommittee to review the United States Onshore Continuous (Unconventional) Gas Assessment Methodology Used by the USGS

 

Reserve Growth Methodology

USGS Reports

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

Reserve Growth of Oil and Gas Fields - Investigations and Applications
By Troy Cook

Peer Review

American Association of Petroleum Geologists Committee on Resource Evaluation (CORE) Subcommittee to review the Growth-to-Known Reserves

 

Below are a list of recent assessment areas.  You can also use the National Oil and Gas Assessment Map to browse these assessments.

Filter Total Items: 59
link
Province 5042 Pedernal Uplift National Oil and Gas Assessments

Pedernal Uplift Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Pedernal Uplift Province 5042.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
link

Pedernal Uplift Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Pedernal Uplift Province 5042.
Learn More
link
Province 5025 Southern Arizona-Southwestern New Mexico National Oil and Gas Assessments

Southern Arizona-Southwestern New Mexico Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Southern Arizona-Southwestern New Mexico Basin 5025.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
link

Southern Arizona-Southwestern New Mexico Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Southern Arizona-Southwestern New Mexico Basin 5025.
Learn More
link
Province 5026 South Central New Mexico National Oil and Gas Assessments

South-Central New Mexico Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the South-Central New Mexico Province 5026.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
link

South-Central New Mexico Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the South-Central New Mexico Province 5026.
Learn More
link
Province 5040 Las Animas Arch National Oil and Gas Assessments

Las Animas Arch Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Las Animas Arch Province 5040 of southeastern Colorado.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
link

Las Animas Arch Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Las Animas Arch Province 5040 of southeastern Colorado.
Learn More
link
Province 5029 Southwest Montana National Oil and Gas Assessments

Southwest Montana Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Southwest Montana Province 5029.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
link

Southwest Montana Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Southwest Montana Province 5029.
Learn More
link
Province 5038 Park Basin

Park Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Park Basins Province 5038 of Colorado.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
link

Park Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Park Basins Province 5038 of Colorado.
Learn More
link
Province 5032 Sioux Arch National Oil and Gas Assessments

Sioux Arch Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Sioux Arch Province 5032 in South Dakota.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
link

Sioux Arch Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Sioux Arch Province 5032 in South Dakota.
Learn More
link
Province 5018 Western Great Basin National Oil and Gas Assessments

Western Great Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered continuous oil and gas resources of the Western Great Basin Province 5018.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
link

Western Great Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered continuous oil and gas resources of the Western Great Basin Province 5018.
Learn More
link
Province 5024 Northern Arizona National Oil and Gas Assessments

Northern Arizona Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Northern Arizona Province 5024.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
link

Northern Arizona Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Northern Arizona Province 5024.
Learn More
link
Province 5023 Albuquerque-Santa Fe Rift National Oil and Gas Assessments

Albuquerque-Santa Fe Rift Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Albuquerque-Santa Fe Rift 5023.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
link

Albuquerque-Santa Fe Rift Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Albuquerque-Santa Fe Rift 5023.
Learn More
link
Province 5017 Idaho-Snake River Downwarp National Oil and Gas Assessments

Idaho-Snake River Downwarp Oil and Gas Assessments

The U.S. Geological Survey completed the following assessment of the Idaho-Snake River Downwarp Province 5017.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
link

Idaho-Snake River Downwarp Oil and Gas Assessments

The U.S. Geological Survey completed the following assessment of the Idaho-Snake River Downwarp Province 5017.
Learn More
link
Province 5011 Central Coastal National Oil and Gas Assessments

Central Coastal Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of the Central Coastal Province 5011.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
link

Central Coastal Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of the Central Coastal Province 5011.
Learn More

Below are datasets related to the National Oil and Gas Assessments.  

Legacy downloadable data
Filter Total Items: 47

USGS National and Global Oil and Gas Assessment Project - Northern Alaska Province, Western North Slope Assessment Unit Boundaries and Assessment Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of undiscovered oil and gas resources of strata older than the Torok Formation of the Western North Slope in the Northern Alaska province. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The...
By
Energy Resources Program, Geology, Energy & Minerals Science Center

USGS National and Global Oil and Gas Assessment Project - Wind River Basin, Mowry Shale Formation Assessment Unit Boundaries and Assessment Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of undiscovered oil and gas resources in the Mowry formation of the Wind River Basin Province in Wyoming. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project-Gulf Coast Mesozoic Province, Upper Cretaceous Austin Chalk Group and Tokio and Eutaw Formations Assessment Units and Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of oil and gas resources in the Upper Cretaceous Austin Chalk Group and Tokio and Eutaw Formations in Texas, Louisiana, Mississippi, Alabama, Florida and Arkansas. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project - San Juan Basin Province, Fruitland Total Petroleum System Assessment Units and Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of gas resources in the Fruitland Total Petroleum System of New Mexico and Colorado. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project - San Juan Basin Province, Lewis Shale Total Petroleum System Assessment Units and Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of gas resources in the Lewis Shale Total Petroleum System of New Mexico and Colorado. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project - San Juan Basin Province, Mancos-Menefee Composite Total Petroleum System and underlying Todilto Total Petroleum System Assessment Units and Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of Oil and Gas Resources in the Mancos-Menefee Composite and Underlying Todilto Total Petroleum Systems of New Mexico and Colorado. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit...
By
Central Energy Resources Science Center

USGS National and Global Assessment Project-Sacramento Basin, Conventional and Continuous Assessment Unit Boundaries and Assessment Input Forms

This data release contains the boundaries of assessment units and input data for the assessment of undiscovered gas resources of the Sacramento Basin province in California. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher-level...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project - Appalachian Basin Province, Middle Devonian Marcellus Shale Assessment Units and Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of undiscovered gas resources in the Middle Devonian Marcellus Shale of the Appalachian Basin Province, 2019. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project - Appalachian Basin Province, Point Pleasant Formation and Utica Shale Assessment Unit Boundaries and Assessment Input Data Forms

This data release contains the boundaries of assessment units and input data for the Assessment of undiscovered continuous oil and gas resources in the Upper Ordovician Point Pleasant Formation and Utica Shale of the Appalachian Basin Province, 2019. The Assessment Unit is defined within the context of the higher-level Total Petroleum System. The Assessment Unit is shown herein as a...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project-Michigan Basin Province, Collingwood-Utica Assessment Unit Boundaries and Assessment Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of continuous oil and gas resources in the Ordovician Collingwood Shale and Utica Shale formations in the Michigan Basin province. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project-Eastern Great Basin Province, Delle Phosphatic Member Shale Assessment Unit Boundaries and Assessment Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of continuous oil and gas resources in the Delle Phosphatic Member of the Mississippian Woodman Formation, western Utah, eastern Nevada and southeastern Idaho. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project-Southwestern Wyoming Province, Phosphoria Shale Gas Assessment Unit Boundaries and Assessment Input Data Forms

This data release contains the boundary of the assessment unit and input data for the assessment of continuous gas resources in the Phosphoria formation of the Southwestern Wyoming province. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the...
By
Central Energy Resources Science Center

Below are publications associated with this project.

Filter Total Items: 99

Assessment of continuous oil and gas resources in the Ordovician Collingwood Formation and Utica Shale of the Michigan Basin Province, 2019

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 290 milllion barrels of shale oil and 7.9 trillion cubic feet of shale gas in the Ordovician Collingwood-Utica Shale Total Petroleum System of the Michigan Basin Province.
Authors
Christopher J. Schenk, Tracey J. Mercier, Cheryl A. Woodall, Heidi M. Leathers-Miller, Thomas M. Finn, Phuong A. Le, Michael E. Brownfield, Kristen R. Marra, Geoffrey S. Ellis
By
Energy Resources Program, Central Energy Resources Science Center

Assessment of continuous oil and gas resources in the Mississippian Delle Phosphatic Member of the Woodman Formation in the Eastern Great Basin Province of Nevada, Utah, and Idaho, 2019

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 144 million barrels of shale oil and 559 billion cubic feet of shale gas in the Mississippian Delle Phosphatic Member of the Woodman Formation in the Eastern Great Basin Province of Nevada, Utah, and Idaho.
Authors
Christopher J. Schenk, Tracey J. Mercier, Thomas M. Finn, Kristen R. Marra, Phuong A. Le, Michael E. Brownfield, Heidi M. Leathers-Miller
By
Energy Resources Program, Central Energy Resources Science Center

Assessment of continuous gas resources in the Permian Phosphoria Formation of the Southwestern Wyoming Province, Wyoming, 2019

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 1.4 trillion cubic feet of continuous gas in the Phosphoria Formation of the Southwestern Wyoming Province, Wyoming.
Authors
Christopher J. Schenk, Tracey J. Mercier, Thomas M. Finn, Kristen R. Marra, Phuong A. Le, Heidi M. Leathers-Miller, Janet K. Pitman, Michael E. Brownfield, Ronald M. Drake
By
Energy Resources Program, Central Energy Resources Science Center

Assessment of undiscovered continuous oil and gas resources in the Upper Ordovician Point Pleasant Formation and Utica Shale of the Appalachian Basin Province, 2019

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable continuous mean resources of 1.8 billion barrels of oil and 117.2 trillion cubic feet of gas in the Upper Ordovician Point Pleasant Formation and Utica Shale of the Appalachian Basin Province.
Authors
Catherine B. Enomoto, Michael H. Trippi, Debra K. Higley, Ronald M. Drake, Stephanie B. Gaswirth, Tracey J. Mercier, Michael E. Brownfield, Heidi M. Leathers-Miller, Phuong A. Le, Kristen R. Marra, Marilyn E. Tennyson, Cheryl A. Woodall, Christopher J. Schenk
By
Energy Resources Program, Geology, Energy & Minerals Science Center, Central Energy Resources Science Center

Assessment of undiscovered gas resources in the Middle Devonian Marcellus Shale of the Appalachian Basin Province, 2019

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable continuous mean resources of 96.5 trillion cubic feet of gas in the Middle Devonian Marcellus Shale of the Appalachian Basin Province.
Authors
Debra K. Higley, Catherine B. Enomoto, Heidi M. Leathers-Miller, Geoffrey S. Ellis, Tracey J. Mercier, Christopher J. Schenk, Michael H. Trippi, Phuong A. Le, Michael E. Brownfield, Cheryl A. Woodall, Kristen R. Marra, Marilyn E. Tennyson
By
Energy Resources Program, Geology, Energy & Minerals Science Center, Central Energy Resources Science Center

Assessment of continuous oil resources in the Eastern Great Basin Province of Nevada, Utah, and Idaho, 2018

The U.S. Geological Survey (USGS) quantitatively assessed the potential for undiscovered, technically recoverable continuous oil and gas resources in the Eastern Great Basin Province (Anna and others, 2007) of Nevada, Utah, and Idaho (fig. 1). The assessment focused on the area of the province between the Roberts Mountains and Sevier thrust systems (Peterson, 1994). The major petroleum...
Authors
Christopher J. Schenk, Tracey J. Mercier, Cheryl A. Woodall, Thomas M. Finn, Stephanie B. Gaswirth, Kristen R. Marra, Phuong A. Le, Michael E. Brownfield, Heidi M. Leathers-Miller, Ronald M. Drake, Scott A. Kinney
By
Energy Resources Program, Central Energy Resources Science Center

Assessment of undiscovered continuous tight-gas resources in the Mesaverde Group and Wasatch Formation, Uinta-Piceance Province, Utah and Colorado, 2018

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 24 trillion cubic feet of gas in the Mesaverde Group and Wasatch Formation of the Uinta-Piceance Province in northeast Utah and northwest Colorado.
Authors
Ronald M. Drake, Christopher J. Schenk, Tracey J. Mercier, Phuong A. Le, Thomas M. Finn, Ronald C. Johnson, Cheryl A. Woodall, Stephanie B. Gaswirth, Kristen R. Marra, Janet K. Pitman, Heidi M. Leathers-Miller, Seth S. Haines, Marilyn E. Tennyson
By
Energy Resources Program, Central Energy Resources Science Center

Assessment of undiscovered oil and gas resources in the South Florida basin, 2016

Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean undiscovered, technically recoverable resources of 49 million barrels of oil and 18 billion cubic feet of gas in the onshore and State waters part of the South Florida basin.
Authors
Tina L. Roberts-Ashby, Paul C. Hackley, Celeste D. Lohr, Christopher J. Schenk, Tracey J. Mercier, Katherine J. Whidden, Phuong A. Le, Marilyn E. Tennyson, Stephanie B. Gaswirth, Cheryl A. Woodall, Michael E. Brownfield, Heidi M. Leathers-Miller, Kristen R. Marra, Thomas M. Finn
By
Energy Resources Program, Geology, Energy & Minerals Science Center, Central Energy Resources Science Center

Lithologic descriptions, geophysical logs, and source-rock geochemistry of the U.S. Geological Survey Alcova Reservoir AR–1–13 Core Hole, Natrona County, Wyoming

In 2013, a continuous 624-foot core hole was drilled and logged by the U.S. Geological Survey in Natrona County, Wyoming, with the goal to better understand Cretaceous source rocks in the Wind River Basin. The core hole, named the Alcova Reservoir AR–1–13, penetrated the interval extending from the upper part of the Lower Cretaceous Cloverly Formation to the lower part of the Upper...
Authors
Mark A. Kirschbaum, Thomas M. Finn, Christopher J. Schenk, Sarah J. Hawkins
By
Energy Resources Program, Central Energy Resources Science Center

Assessment of continuous oil and gas resources in the Niobrara interval of the Cody Shale, Wind River Basin Province, Wyoming, 2018

Using a geology-based assessment methodology, the U.S. Geological Survey estimated means of 389 million barrels of oil and 1.8 trillion cubic feet of gas in the Niobrara interval of the Cody Shale in the Wind River Basin Province, Wyoming.
Authors
Thomas M. Finn, Christopher J. Schenk, Tracey J. Mercier, Marilyn E. Tennyson, Phuong A. Le, Michael E. Brownfield, Kristen R. Marra, Heidi M. Leathers-Miller, Ronald M. Drake, Cheryl A. Woodall, Scott A. Kinney
By
Energy Resources Program, Central Energy Resources Science Center

Assessment of undiscovered continuous oil and gas resources in the Wolfcamp Shale and Bone Spring Formation of the Delaware Basin, Permian Basin Province, New Mexico and Texas, 2018

Using a geology-based assessment methodology, the U.S. Geological Survey assessed undiscovered, technically recoverable continuous mean resources of 46.3 billion barrels of oil and 281 trillion cubic feet of gas in the Wolfcamp shale and Bone Spring Formation of the Delaware Basin in the Permian Basin Province, southeast New Mexico and west Texas.
Authors
Stephanie B. Gaswirth, Katherine L. French, Janet K. Pitman, Kristen R. Marra, Tracey J. Mercier, Heidi M. Leathers-Miller, Christopher J. Schenk, Marilyn E. Tennyson, Cheryl A. Woodall, Michael E. Brownfield, Thomas M. Finn, Phuong A. Le
By
Energy Resources Program, Central Energy Resources Science Center, Oklahoma-Texas Water Science Center

U.S. Geological Survey input-data forms for the assessment of the Upper Jurassic Bossier Formation, U.S. Gulf Coast, 2016

IntroductionIn 2016, the U.S. Geological Survey (USGS) completed an updated assessment of undiscovered, technically recoverable oil and gas resources in the Upper Jurassic Bossier Formation of the onshore U.S. Gulf Coast Province (Paxton and others, 2017). The Bossier Formation was assessed using both the standard continuous (unconventional) and conventional methodologies established by...
Authors
Stanley T. Paxton, Janet K. Pitman, Scott A. Kinney, Nicholas J. Gianoutsos, Ofori N. Pearson, Katherine J. Whidden, Russell F. Dubiel, Christopher J. Schenk, Lauri A. Burke, Timothy R. Klett, Heidi M. Leathers-Miller, Tracey J. Mercier, Seth S. Haines, Brian A. Varela, Phuong A. Le, Thomas M. Finn, Stephanie B. Gaswirth, Sarah J. Hawkins, Kristen R. Marra, Marilyn E. Tennyson
By
Energy Resources Program, Central Energy Resources Science Center

Below are datasets related to the National Oil and Gas Assessments.  

Below are news stories associated with this project.

Below are FAQ associated with this project.

Below are partners associated with this project.

Bureau of Land Management (BLM)

Bureau of Ocean Energy Management (BOEM)

U.S. Department of Energy (DOE)

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).

Assessment Overview

Image shows a map of the assessment units of the 2018 Delaware Basin oil and gas assessment

The USGS assesses potential for undiscovered oil and gas resources in priority geologic provinces in the United States.  This website highlights conventional and unconventional (continuous) oil and gas assessments.

Summary of Continuous Assessments

Interactive map and chart highlighting USGS Domestic Continuous (Unconventional) Oil & Gas Assessments, 2000-Present

This applications shows maps and tables of all continuous assessments in the United States.

Click here to launch

Recent Assessments

Below are the latest US Assessments:

Browse Assessments

National Oil and Gas Assessment Methodology

The U.S. Geological Survey Energy Resources Program assesses the potential for undiscovered oil and gas resources in priority geologic provinces in the United States and around the world (click here for information about World Oil and Gas Assessments). Two methodologies are used by the USGS; one for assessing conventional oil and gas resources and one for assessing unconventional (continuous) oil and gas resources (such as shale gas and coalbed gas).  USGS publications detailing and explaining the conventional and continuous assessment methodologies are provided below.  These methodologies have been subjected to rigorous peer reviews by non federal panels, and the two panel reports are provided on this page.

 

Conventional Resources

USGS Reports

U.S. Geological Survey Assessment Concepts for Conventional Petroleum Accumulations
By James W. Schmoker and T.R. Klett

U.S. Geological Survey Input-Data Form and Operational Procedure for the Assessment of Conventional Petroleum Accumulations
By T.R. Klett, James W. Schmoker, and Ronald R. Charpentier

A Monte Carlo Simulation Method for the Assessment of Undiscovered, Conventional Oil and Gas
By Ronald R. Charpentier and T.R. Klett

 

Continuous Resources

USGS Reports

U.S. Geological Survey Assessment Concepts for Continuous Petroleum Accumulations
By James W. Schmoker

U.S. Geological Survey Input-Data Form and Operational Procedure for the Assessment Of Continuous Petroleum Accumulations, 2002
By T.R. Klett and James W. Schmoker

Analytic Resource Assessment Method for Continuous Petroleum Accumulations—The ACCESS Assessment Method
By Robert A. Crovelli

FORSPAN Model Users Guide
By T.R. Klett, and Ronald R. Charpentier
 

Methodology Revisions

Improved USGS methodology for assessing continuous petroleum resources.
Charpentier, R.R., and Cook, T.A.

Applying Probabilistic Well-Performance Parameters to Assessments of Shale-Gas Resources
By Ronald R. Charpentier and Troy Cook

Assembling Probabilistic Performance Parameters of Shale-Gas Wells
By Cook, Troy, and Charpentier, R.R.

USGS Methodology for Assessing Continuous Petroleum Resources
By Ronald R. Charpentier and Troy Cook

New U.S. Geological Survey Method for the Assessment of Reserve Growth
By Timothy R. Klett, Emil D. Attanasi, Ronald R. Charpentier, Troy A. Cook, Philip A. Freeman, Donald L. Gautier, Phuong A. Le, Robert T. Ryder, Christopher J. Schenk, Marilyn E. Tennyson, and Mahendra K. Verma (Reserve Growth Assessment Team)

Variability of Distributions of Well-Scale Estimated Ultimate Recovery for Continuous (Unconventional) Oil and Gas Resources in the United States 
By U.S. Geological Survey Oil and Gas Assessment Team

Peer Review

American Association of Petroleum Geologists Committee on Resource Evaluation (CORE) Subcommittee to review the United States Onshore Continuous (Unconventional) Gas Assessment Methodology Used by the USGS

 

Reserve Growth Methodology

USGS Reports

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

Reserve Growth of Oil and Gas Fields - Investigations and Applications
By Troy Cook

Peer Review

American Association of Petroleum Geologists Committee on Resource Evaluation (CORE) Subcommittee to review the Growth-to-Known Reserves

 

Below are a list of recent assessment areas.  You can also use the National Oil and Gas Assessment Map to browse these assessments.

Filter Total Items: 59
link
Province 5042 Pedernal Uplift National Oil and Gas Assessments

Pedernal Uplift Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Pedernal Uplift Province 5042.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
link

Pedernal Uplift Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Pedernal Uplift Province 5042.
Learn More
link
Province 5025 Southern Arizona-Southwestern New Mexico National Oil and Gas Assessments

Southern Arizona-Southwestern New Mexico Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Southern Arizona-Southwestern New Mexico Basin 5025.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
link

Southern Arizona-Southwestern New Mexico Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Southern Arizona-Southwestern New Mexico Basin 5025.
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link
Province 5026 South Central New Mexico National Oil and Gas Assessments

South-Central New Mexico Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the South-Central New Mexico Province 5026.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
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South-Central New Mexico Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the South-Central New Mexico Province 5026.
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Province 5040 Las Animas Arch National Oil and Gas Assessments

Las Animas Arch Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Las Animas Arch Province 5040 of southeastern Colorado.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
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Las Animas Arch Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Las Animas Arch Province 5040 of southeastern Colorado.
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Province 5029 Southwest Montana National Oil and Gas Assessments

Southwest Montana Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Southwest Montana Province 5029.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
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Southwest Montana Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Southwest Montana Province 5029.
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Province 5038 Park Basin

Park Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Park Basins Province 5038 of Colorado.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
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Park Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Park Basins Province 5038 of Colorado.
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Province 5032 Sioux Arch National Oil and Gas Assessments

Sioux Arch Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Sioux Arch Province 5032 in South Dakota.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
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Sioux Arch Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Sioux Arch Province 5032 in South Dakota.
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Province 5018 Western Great Basin National Oil and Gas Assessments

Western Great Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered continuous oil and gas resources of the Western Great Basin Province 5018.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
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Western Great Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered continuous oil and gas resources of the Western Great Basin Province 5018.
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Province 5024 Northern Arizona National Oil and Gas Assessments

Northern Arizona Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Northern Arizona Province 5024.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
link

Northern Arizona Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Northern Arizona Province 5024.
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Province 5023 Albuquerque-Santa Fe Rift National Oil and Gas Assessments

Albuquerque-Santa Fe Rift Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Albuquerque-Santa Fe Rift 5023.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
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Albuquerque-Santa Fe Rift Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Albuquerque-Santa Fe Rift 5023.
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Province 5017 Idaho-Snake River Downwarp National Oil and Gas Assessments

Idaho-Snake River Downwarp Oil and Gas Assessments

The U.S. Geological Survey completed the following assessment of the Idaho-Snake River Downwarp Province 5017.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
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Idaho-Snake River Downwarp Oil and Gas Assessments

The U.S. Geological Survey completed the following assessment of the Idaho-Snake River Downwarp Province 5017.
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Province 5011 Central Coastal National Oil and Gas Assessments

Central Coastal Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of the Central Coastal Province 5011.
By
Energy and Mineral Resources Mission Area, Energy Resources Program, Central Energy Resources Science Center
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Central Coastal Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of the Central Coastal Province 5011.
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Below are datasets related to the National Oil and Gas Assessments.  

Legacy downloadable data
Filter Total Items: 47

USGS National and Global Oil and Gas Assessment Project - Northern Alaska Province, Western North Slope Assessment Unit Boundaries and Assessment Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of undiscovered oil and gas resources of strata older than the Torok Formation of the Western North Slope in the Northern Alaska province. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The...
By
Energy Resources Program, Geology, Energy & Minerals Science Center

USGS National and Global Oil and Gas Assessment Project - Wind River Basin, Mowry Shale Formation Assessment Unit Boundaries and Assessment Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of undiscovered oil and gas resources in the Mowry formation of the Wind River Basin Province in Wyoming. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project-Gulf Coast Mesozoic Province, Upper Cretaceous Austin Chalk Group and Tokio and Eutaw Formations Assessment Units and Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of oil and gas resources in the Upper Cretaceous Austin Chalk Group and Tokio and Eutaw Formations in Texas, Louisiana, Mississippi, Alabama, Florida and Arkansas. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project - San Juan Basin Province, Fruitland Total Petroleum System Assessment Units and Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of gas resources in the Fruitland Total Petroleum System of New Mexico and Colorado. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project - San Juan Basin Province, Lewis Shale Total Petroleum System Assessment Units and Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of gas resources in the Lewis Shale Total Petroleum System of New Mexico and Colorado. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project - San Juan Basin Province, Mancos-Menefee Composite Total Petroleum System and underlying Todilto Total Petroleum System Assessment Units and Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of Oil and Gas Resources in the Mancos-Menefee Composite and Underlying Todilto Total Petroleum Systems of New Mexico and Colorado. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit...
By
Central Energy Resources Science Center

USGS National and Global Assessment Project-Sacramento Basin, Conventional and Continuous Assessment Unit Boundaries and Assessment Input Forms

This data release contains the boundaries of assessment units and input data for the assessment of undiscovered gas resources of the Sacramento Basin province in California. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher-level...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project - Appalachian Basin Province, Middle Devonian Marcellus Shale Assessment Units and Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of undiscovered gas resources in the Middle Devonian Marcellus Shale of the Appalachian Basin Province, 2019. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project - Appalachian Basin Province, Point Pleasant Formation and Utica Shale Assessment Unit Boundaries and Assessment Input Data Forms

This data release contains the boundaries of assessment units and input data for the Assessment of undiscovered continuous oil and gas resources in the Upper Ordovician Point Pleasant Formation and Utica Shale of the Appalachian Basin Province, 2019. The Assessment Unit is defined within the context of the higher-level Total Petroleum System. The Assessment Unit is shown herein as a...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project-Michigan Basin Province, Collingwood-Utica Assessment Unit Boundaries and Assessment Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of continuous oil and gas resources in the Ordovician Collingwood Shale and Utica Shale formations in the Michigan Basin province. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project-Eastern Great Basin Province, Delle Phosphatic Member Shale Assessment Unit Boundaries and Assessment Input Data Forms

This data release contains the boundaries of assessment units and input data for the assessment of continuous oil and gas resources in the Delle Phosphatic Member of the Mississippian Woodman Formation, western Utah, eastern Nevada and southeastern Idaho. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas...
By
Central Energy Resources Science Center

USGS National and Global Oil and Gas Assessment Project-Southwestern Wyoming Province, Phosphoria Shale Gas Assessment Unit Boundaries and Assessment Input Data Forms

This data release contains the boundary of the assessment unit and input data for the assessment of continuous gas resources in the Phosphoria formation of the Southwestern Wyoming province. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the...
By
Central Energy Resources Science Center

Below are publications associated with this project.

Filter Total Items: 99

Assessment of continuous oil and gas resources in the Ordovician Collingwood Formation and Utica Shale of the Michigan Basin Province, 2019

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 290 milllion barrels of shale oil and 7.9 trillion cubic feet of shale gas in the Ordovician Collingwood-Utica Shale Total Petroleum System of the Michigan Basin Province.
Authors
Christopher J. Schenk, Tracey J. Mercier, Cheryl A. Woodall, Heidi M. Leathers-Miller, Thomas M. Finn, Phuong A. Le, Michael E. Brownfield, Kristen R. Marra, Geoffrey S. Ellis
By
Energy Resources Program, Central Energy Resources Science Center

Assessment of continuous oil and gas resources in the Mississippian Delle Phosphatic Member of the Woodman Formation in the Eastern Great Basin Province of Nevada, Utah, and Idaho, 2019

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 144 million barrels of shale oil and 559 billion cubic feet of shale gas in the Mississippian Delle Phosphatic Member of the Woodman Formation in the Eastern Great Basin Province of Nevada, Utah, and Idaho.
Authors
Christopher J. Schenk, Tracey J. Mercier, Thomas M. Finn, Kristen R. Marra, Phuong A. Le, Michael E. Brownfield, Heidi M. Leathers-Miller
By
Energy Resources Program, Central Energy Resources Science Center

Assessment of continuous gas resources in the Permian Phosphoria Formation of the Southwestern Wyoming Province, Wyoming, 2019

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 1.4 trillion cubic feet of continuous gas in the Phosphoria Formation of the Southwestern Wyoming Province, Wyoming.
Authors
Christopher J. Schenk, Tracey J. Mercier, Thomas M. Finn, Kristen R. Marra, Phuong A. Le, Heidi M. Leathers-Miller, Janet K. Pitman, Michael E. Brownfield, Ronald M. Drake
By
Energy Resources Program, Central Energy Resources Science Center

Assessment of undiscovered continuous oil and gas resources in the Upper Ordovician Point Pleasant Formation and Utica Shale of the Appalachian Basin Province, 2019

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable continuous mean resources of 1.8 billion barrels of oil and 117.2 trillion cubic feet of gas in the Upper Ordovician Point Pleasant Formation and Utica Shale of the Appalachian Basin Province.
Authors
Catherine B. Enomoto, Michael H. Trippi, Debra K. Higley, Ronald M. Drake, Stephanie B. Gaswirth, Tracey J. Mercier, Michael E. Brownfield, Heidi M. Leathers-Miller, Phuong A. Le, Kristen R. Marra, Marilyn E. Tennyson, Cheryl A. Woodall, Christopher J. Schenk
By
Energy Resources Program, Geology, Energy & Minerals Science Center, Central Energy Resources Science Center

Assessment of undiscovered gas resources in the Middle Devonian Marcellus Shale of the Appalachian Basin Province, 2019

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable continuous mean resources of 96.5 trillion cubic feet of gas in the Middle Devonian Marcellus Shale of the Appalachian Basin Province.
Authors
Debra K. Higley, Catherine B. Enomoto, Heidi M. Leathers-Miller, Geoffrey S. Ellis, Tracey J. Mercier, Christopher J. Schenk, Michael H. Trippi, Phuong A. Le, Michael E. Brownfield, Cheryl A. Woodall, Kristen R. Marra, Marilyn E. Tennyson
By
Energy Resources Program, Geology, Energy & Minerals Science Center, Central Energy Resources Science Center

Assessment of continuous oil resources in the Eastern Great Basin Province of Nevada, Utah, and Idaho, 2018

The U.S. Geological Survey (USGS) quantitatively assessed the potential for undiscovered, technically recoverable continuous oil and gas resources in the Eastern Great Basin Province (Anna and others, 2007) of Nevada, Utah, and Idaho (fig. 1). The assessment focused on the area of the province between the Roberts Mountains and Sevier thrust systems (Peterson, 1994). The major petroleum...
Authors
Christopher J. Schenk, Tracey J. Mercier, Cheryl A. Woodall, Thomas M. Finn, Stephanie B. Gaswirth, Kristen R. Marra, Phuong A. Le, Michael E. Brownfield, Heidi M. Leathers-Miller, Ronald M. Drake, Scott A. Kinney
By
Energy Resources Program, Central Energy Resources Science Center

Assessment of undiscovered continuous tight-gas resources in the Mesaverde Group and Wasatch Formation, Uinta-Piceance Province, Utah and Colorado, 2018

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 24 trillion cubic feet of gas in the Mesaverde Group and Wasatch Formation of the Uinta-Piceance Province in northeast Utah and northwest Colorado.
Authors
Ronald M. Drake, Christopher J. Schenk, Tracey J. Mercier, Phuong A. Le, Thomas M. Finn, Ronald C. Johnson, Cheryl A. Woodall, Stephanie B. Gaswirth, Kristen R. Marra, Janet K. Pitman, Heidi M. Leathers-Miller, Seth S. Haines, Marilyn E. Tennyson
By
Energy Resources Program, Central Energy Resources Science Center

Assessment of undiscovered oil and gas resources in the South Florida basin, 2016

Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean undiscovered, technically recoverable resources of 49 million barrels of oil and 18 billion cubic feet of gas in the onshore and State waters part of the South Florida basin.
Authors
Tina L. Roberts-Ashby, Paul C. Hackley, Celeste D. Lohr, Christopher J. Schenk, Tracey J. Mercier, Katherine J. Whidden, Phuong A. Le, Marilyn E. Tennyson, Stephanie B. Gaswirth, Cheryl A. Woodall, Michael E. Brownfield, Heidi M. Leathers-Miller, Kristen R. Marra, Thomas M. Finn
By
Energy Resources Program, Geology, Energy & Minerals Science Center, Central Energy Resources Science Center

Lithologic descriptions, geophysical logs, and source-rock geochemistry of the U.S. Geological Survey Alcova Reservoir AR–1–13 Core Hole, Natrona County, Wyoming

In 2013, a continuous 624-foot core hole was drilled and logged by the U.S. Geological Survey in Natrona County, Wyoming, with the goal to better understand Cretaceous source rocks in the Wind River Basin. The core hole, named the Alcova Reservoir AR–1–13, penetrated the interval extending from the upper part of the Lower Cretaceous Cloverly Formation to the lower part of the Upper...
Authors
Mark A. Kirschbaum, Thomas M. Finn, Christopher J. Schenk, Sarah J. Hawkins
By
Energy Resources Program, Central Energy Resources Science Center

Assessment of continuous oil and gas resources in the Niobrara interval of the Cody Shale, Wind River Basin Province, Wyoming, 2018

Using a geology-based assessment methodology, the U.S. Geological Survey estimated means of 389 million barrels of oil and 1.8 trillion cubic feet of gas in the Niobrara interval of the Cody Shale in the Wind River Basin Province, Wyoming.
Authors
Thomas M. Finn, Christopher J. Schenk, Tracey J. Mercier, Marilyn E. Tennyson, Phuong A. Le, Michael E. Brownfield, Kristen R. Marra, Heidi M. Leathers-Miller, Ronald M. Drake, Cheryl A. Woodall, Scott A. Kinney
By
Energy Resources Program, Central Energy Resources Science Center

Assessment of undiscovered continuous oil and gas resources in the Wolfcamp Shale and Bone Spring Formation of the Delaware Basin, Permian Basin Province, New Mexico and Texas, 2018

Using a geology-based assessment methodology, the U.S. Geological Survey assessed undiscovered, technically recoverable continuous mean resources of 46.3 billion barrels of oil and 281 trillion cubic feet of gas in the Wolfcamp shale and Bone Spring Formation of the Delaware Basin in the Permian Basin Province, southeast New Mexico and west Texas.
Authors
Stephanie B. Gaswirth, Katherine L. French, Janet K. Pitman, Kristen R. Marra, Tracey J. Mercier, Heidi M. Leathers-Miller, Christopher J. Schenk, Marilyn E. Tennyson, Cheryl A. Woodall, Michael E. Brownfield, Thomas M. Finn, Phuong A. Le
By
Energy Resources Program, Central Energy Resources Science Center, Oklahoma-Texas Water Science Center

U.S. Geological Survey input-data forms for the assessment of the Upper Jurassic Bossier Formation, U.S. Gulf Coast, 2016

IntroductionIn 2016, the U.S. Geological Survey (USGS) completed an updated assessment of undiscovered, technically recoverable oil and gas resources in the Upper Jurassic Bossier Formation of the onshore U.S. Gulf Coast Province (Paxton and others, 2017). The Bossier Formation was assessed using both the standard continuous (unconventional) and conventional methodologies established by...
Authors
Stanley T. Paxton, Janet K. Pitman, Scott A. Kinney, Nicholas J. Gianoutsos, Ofori N. Pearson, Katherine J. Whidden, Russell F. Dubiel, Christopher J. Schenk, Lauri A. Burke, Timothy R. Klett, Heidi M. Leathers-Miller, Tracey J. Mercier, Seth S. Haines, Brian A. Varela, Phuong A. Le, Thomas M. Finn, Stephanie B. Gaswirth, Sarah J. Hawkins, Kristen R. Marra, Marilyn E. Tennyson
By
Energy Resources Program, Central Energy Resources Science Center

Below are datasets related to the National Oil and Gas Assessments.  

Below are news stories associated with this project.

Below are FAQ associated with this project.

Below are partners associated with this project.

Bureau of Land Management (BLM)

Bureau of Ocean Energy Management (BOEM)

U.S. Department of Energy (DOE)

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