California reduces recoverable shale oil by 96%

The U.S. Energy Information Administration (EIA) has reduced its estimate of recoverable oil in California’s Monterey shale formation from 13.7 billion barrels to just 0.6 billion barrels—a reduction of over 95%.

The original estimate were based on figures release in a 2011 report by the EIA which had stated that there was up to 15.4 billion barrels of recoverable tight oil in the state’s Monterey shale formation, 64% of the nation’s total.

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The over inflated figures figures sparked optimism for financial analysts over the state of California’s energy future.

The reduction in recoverable estimates were previously highlighted in a report, “Drilling California: A reality check on the Montery Shale” by geoscientist David Hughes. The report utilised empirical analysis of actual shale oil production data from the Monterey shale formation, basing its figures on data, rather than assumptions.

“We’re pleased that the EIA has corrected what was a groundless and highly misleading over-estimation of the potential of the Monterey,” said Asher Miller, Executive Director of Post Carbon Institute. “We hope that everyone—from the EIA to policymakers and the media—will learn a cautionary lesson from what transpired here in California as we wrestle with questions about what the future of American energy policy can and should be.