‹ Analysis & Projections

Annual Energy Outlook 2012

Release Date: June 25, 2012   |  Next Early Release Date: December 5, 2012  |   Report Number: DOE/EIA-0383(2012)

Issues in focus

Table 21. Marcellus unproved technically recoverable resources: AEO2011, USGS 2011, and AEO2012
  Well spacing  
Estimate Area (square miles) Acres Wells per square mile Percent of area untested Percent of area with potential Average EUR (billion cubic feet per well) TRR (billion cubic feet)
AEO2011 (as of 1/1/2009)
Marcellus 94,893 80 8 99% 34% 1.62 410,374
USGS (2011 assessment)
Marcellus 104,067 132 4.9 99% 18% 0.93 84,198
Foldbelt 19,063 149 4.3 100% 5% 0.21 765
Interior 45,156 149 4.3 99% 37% 1.15 81,374
Western 39,844 117 5.5 99% 7% 0.13 2,059
AEO2012 (as of 1/1/2010)
Marcellus 104,067 132 4.9 99% 18% 1.56 140,541
Foldbelt 19,063 149 4.3 100% 5% 0.21 757
Interior 45,161 149 4.3 99% 37% 1.95 137,677
Western 39,844 117 5.5 100% 7% 0.13 2,107