U.S. Geological Survey

U.S. Geological Survey Assessment Model
for Undiscovered Conventional
Oil, Gas, and NGL Resources—
The Seventh Approximation

By James W. Schmoker and Timothy R. Klett

U.S. Geological Survey Bulletin 2165

Version 1.0



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For more information about this report contact Jim Schmoker at schmoker@usgs.gov