Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 8.5 billion barrels of oil and 66 trillion cubic feet of gas in continuous accumulations in the Upper Cretaceous Eagle Ford Group and associated Cenomanian–Turonian strata in onshore lands of the U.S. Gulf Coast region, Texas.
Whidden, K. J., Pitman, J. K., Pearson, O. N., Paxton, S. T., Kinney, S. A., Gianoutsos, N. J., … Coast, U. S. G. (2018). Assessment of undiscovered oil and gas resources in the Eagle Ford Group and associated Cenomanian–Turonian Strata, U.S. Gulf Coast, Texas, 2018. Fact Sheet. https://doi.org/10.3133/fs20183033