Colin A. Doolan Catherine B. Enomoto William H. Craddock James L. Coleman Jr. Michael E. Brownfield Stephanie B. Gaswirth Timothy R. Klett Phuong A. Le Heidi M. Leathers-Miller Kristen R. Marra Tracey J. Mercier Ofori N. Pearson Janet K. Pitman Christopher J. Schenk Marilyn E. Tennyson Katherine J. Whidden Cheryl A. Woodall Marc L. Buursink 2018 <p>Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean undiscovered, technically recoverable conventional resources of 100 million barrels of oil and 16.5 trillion cubic feet of gas in the downdip Paleogene formations in onshore lands and State waters of the U.S. Gulf Coast region.</p> application/pdf 10.3133/fs20183019 en U.S. Geological Survey Assessment of undiscovered conventional oil and gas resources in the downdip Paleogene formations, U.S. Gulf Coast, 2017 reports