Tracey J. Mercier Christopher J. Schenk Thomas E. Moore William A. Rouse Julie A. Dumoulin William H. Craddock Richard O. Lease Palma J. Botterell Margaret M. Sanders Rebecca A. Smith Christopher D. Connors Christopher P. Garrity Katherine J. Whidden Jared T. Gooley John W. Counts Joshua H. Long Christina A. DeVera David W. Houseknecht 2021 <p>Using a geology-based assessment methodology, the U.S. Geological Survey estimated a mean of 1,407 billion (1.4 trillion) cubic feet of gas in conventional accumulations in Upper Devonian to Lower Cretaceous strata of the western North Slope, Alaska.</p> application/pdf 10.3133/fs20213003 en U.S. Geological Survey Assessment of undiscovered gas resources in Upper Devonian to Lower Cretaceous strata of the western North Slope, Alaska, 2021 reports