Tracey J. Mercier Cheryl A. Woodall Marilyn E. Tennyson Thomas M. Finn Michael E. Brownfield Kristen R. Marra Phuong A. Le Ronald M. Drake II Scott A. Kinney Christopher J. Schenk 2020 <p>Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 4.6 billion barrels of oil and 561 trillion cubic feet of gas in the Lower Silurian Shale Total Petroleum System of the Arabian Peninsula.</p> application/pdf 10.3133/fs20193070 en U.S. Geological Survey Assessment of continuous oil and gas resources in Lower Silurian Shales of the Arabian Peninsula, 2019 reports