Ronald R. Charpentier Christopher J. Schenk Michael D. Lewan Heidi M. Leathers-Miller Timothy R. Klett Stephanie B. Gaswirth Phuong A. Le Tracey J. Mercier Janet K. Pitman Marilyn E. Tennyson Kristen R. Marra 2015 <p>Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean volumes of 53 trillion cubic feet of shale gas, 172 million barrels of shale oil, and 176 million barrels of natural gas liquids in the Barnett Shale of the Bend Arch&ndash;Fort Worth Basin Province of Texas.</p> application/pdf 10.3133/fs20153078 en U.S. Geological Survey Assessment of undiscovered shale gas and shale oil resources in the Mississippian Barnett Shale, Bend Arch–Fort Worth Basin Province, North-Central Texas reports