25 Aug '11, 6pm

New USGS Marcellus Shale anaylsis drastically cuts DOE estimates

New USGS Marcellus Shale anaylsis drastically cuts DOE estimates

This week the USGS released a new assessment of gas resources in the Marcellus Shale, Appalachian Basin . The report is a reasonable effort by the USGS to sort out some of the wheat from the chaff. The 84 Tcf technically recoverable undiscovered resource for the Marcellus is a considerable downgrade from the 262 Tcf technically recoverable resource reported by NETL of the DOE in 2009 . Others have been using numbers for the Marcellus in the mid-400’s of Tcf – see for example Engelder (2009) who claims the Marcellus has 489 Tcf of P50 technically recoverable resources. This number fits with that of Powers, who was citing about 60 Tcf. 84 Tcf, which of course, is less than four years of US consumption. And the question is – how long would it take to produce it??? – and at what environmental costs??? As with all USGS estimates this is a probabilistic estimate, with 84 Tcf bei...

Full article: http://www.postcarbon.org/blog-post/464781-new-usgs-marce...

Tweets

Marcellus Shale Estimates Slashed by 80 Percent via @greentechmedia

Marcellus Shale Estimates Slashed by 80 Percent...

greentechmedia.com 25 Aug '11, 11pm

Maybe natural gas isn't as bountiful as some like to think. The United States Geological Survey this week issued a report ...

Fracking sadface: U.S. has one-fifth the shale ...

grist.org 25 Aug '11, 5pm

"Oops," says the United States Geological Survey, "We used to think the shale on the East coast of the U.S., which gas com...