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Digital Data Series 69–JJ

U.S. Geological Survey National Assessment of Oil and Gas Resources Project

Map of Assessed Continuous (Unconventional) Oil Resources in the United States, 2014

By U.S. Geological Survey National Assessment of Oil and Gas Resources Team, and Laura R.H. Biewick, compiler

Thumbnail of and link to report PDF (1.0 MB)Abstract

The U.S. Geological Survey (USGS) conducts quantitative assessments of potential oil and gas resources of the onshore United States and associated coastal State waters. Since 2000, the USGS has completed assessments of continuous (unconventional) resources in the United States based on geologic studies and analysis of well-production data and has compiled digital maps of the assessment units classified into four categories: shale gas, tight gas, coalbed gas, and shale oil or tight oil (continuous oil). This is the fourth digital map product in a series of USGS unconventional oil and gas resource maps; its focus being shale-oil or tight-oil (continuous-oil) assessments. The map plate included in this report can be printed in hardcopy form or downloaded in a Geographic Information System (GIS) data package, which includes an ArcGIS ArcMap document (.mxd), geodatabase (.gdb), and a published map file (.pmf). Supporting geologic studies of total petroleum systems and assessment units, as well as studies of the methodology used in the assessment of continuous-oil resources in the United States, are listed with hyperlinks in table 1. Assessment results and geologic reports are available at the USGS website

First posted February 9, 2015

For additional information, contact:
Director, Central Energy Resources Science Center
U.S. Geological Survey
Box 25046, MS-939
Denver Federal Center
Denver, CO 80225–0046

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Suggested citation:

U.S. Geological Survey National Assessment of Oil and Gas Resources Team, and Biewick, L.R.H., compiler, 2015, Map of assessed continuous (unconventional) oil resources in the United States, 2014: U.S. Geological Survey Digital Data Series 69–JJ, 14 p., 1 pl., GIS data package,


ISSN 2327-638X (online)




Synopsis of Continuous-Oil Assessments in the United States, 2013

Digital Maps and Data



References Cited

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