"Billions in Potential Value" is how this article from centralohio.com describes the possible resource recovery from the Utica Shale in Ohio. "In a presentation to the Ohio Oil and Gas Association last month, Larry Wickstrom, the state's geologist, estimated producers could recover as much as 15.7 trillion cubic feet of natural gas and 5.5 billion barrels of oil from Ohio's share of the Utica Shale." And that's a conservative estimate.