FORT WORTH BASIN*
Red River Arch
Ro > 1.1%
Ro = 0. 9—1.1%
Ro = 0.6—0.9%
Mineral Wells Fault
La mpasas Arch
Ouachita Thrust Front
* Oil and gas-generation windows determined from mean vitrinite
refectance (Ro) and current study area.
Source: Modifed from Montgomery, S., Jarvie, D., Bowker, K. and R. Pollastro,
“Mississippian Barnett shale, Fort Worth Basin, north-central Texas: Gas-shale
play with multitrillion cubic foot potential,”
AAPG Bulletin, Vol. 89 (2005), No. 2, pp. 155–175.
• Calculation of volumetric original free gas in place
(OGIPfree) of 444 tcf for the 8,000-sq-mile study area.
• Technically recoverable resources for each square mile
ranging from about 100 bcf/sq mile in the top tiers to less
than 20 bcf/sq mile in the lower tiers, and field wide technically recoverable resources of about 86 tcf.
The BEG study examines production data from all individual
wells drilled 1995-2010 in the Barnett shale play in the Fort
Worth basin. The study compares its 2050 production fore-
cast to actual production through 2012. While other known
assessments of the Barnett have relied on aggregated average
production, offering a “top-down” approach to reserves and
production forecasting, the BEG study takes a “bottom-up”
approach, starting with the production history of every well
then determining what remains to be drilled under various
economic scenarios. The result is an
unprecedented, comprehensive view
of the field.