USGS Report Shows Oil, Gas Richness Of Eagle Ford

The U.S. Geological Survey (USGS) has deemed the Eagle Ford abundant in both oil and gas, estimating undiscovered, technically recoverable resources in the region at about 8.5 billion barrels (Bbbl) of oil, 66 trillion cubic feet (Tcf) of gas and 1.9 Bbbl of NGL. In a report released June 22, the USGS said the Eagle Ford contains one of the most prolific continuous accumulations of oil and gas in the U.S. The USGS described the Eagle Ford’s composition as mostly mudstone and calcareous mudstone (marl) with organic-rich intervals, deposited in outer shelf and upper slope environments during the Cenomanian–Turonian ages. “This assessment is a bit different than previous ones because it ranks in the top five of assessments we’ve done of continuous resources for both oil and gas,” USGS scientist Kate Whidden, lead author for the assessment, said in a statement about the report. “Usually, formations produce primarily oil or gas, but the Eagle Ford is rich in both.”

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