USGS Updates Survey Of Marcellus Resource Base

The Marcellus Shale contains about 84 Tcf of undiscovered, technically recoverable natural gas and 3.4 billion barrels of undiscovered, technically recoverable natural gas liquids according to a new assessment by the U.S. Geological Survey (USGS).  These gas estimates are significantly more than the last USGS assessment of the Marcellus Shale in the Appalachian Basin in 2002, which estimated a mean of about 2 Tcf and 0.01 billion barrels of natural gas liquids.