Anadarko's properties in the Southern & Appalachia region are located primarily in Texas and Pennsylvania and are focused on finding and developing natural gas resources from shales, tight sands and fractured-reservoir plays. Anadarko holds interest in approximately 600,000 net fairway acres in shale plays throughout the Southern region that hold an estimated 49 Trillion cubic feet of natural gas equivalent in total gross unrisked resources. These shales are located in the Marcellus play in north-central Pennsylvania, the Eagleford/Pearsall plays in southwest Texas and the Haynesville play in East Texas and western Louisiana. Anadarko also has active tight-gas and/or fractured-reservoir operations in the Bossier, Haley, Carthage, Chalk, South Texas and Ozona areas in Texas, and the Hugoton area in southern Kansas.
View Anadarko's quarterly operations report and investor presentations for our most recent activity in the U.S. Southern region.
Pennsylvania
Bringing our recognized environmental programs and best practices to Pennsylvania, Anadarko holds approximately 715,000 gross acres in the Marcellus Shale. We continue to build the Marcellus program with encouraging results. Increased activity in the Marcellus play brings economic activity to the Commonwealth and presents net unrisked resource potential that equals all of Anadarko's total proved reserves of 2.3 billion BOE as of year-end 2009.
South Texas and Hugoton
Other areas in the Southern region include the Ozona properties in South Texas, and the Eagleford and Pearsall shales in the Maverick Basin of southwest Texas. Anadarko holds approximately 400,000 gross acres and a strategic position in the Maverick. The company is steadily increasing its activity in this area where a high liquids component in the Eagleford significantly enhances the value of the product stream. The company also remains active in the Hugoton area of southern Kansas, a long-life, slow-decline asset with opportunity for future activity.
East Texas
Production and development activities at Anadarko's properties in East Texas are concentrated in the Bossier and Carthage areas, as well as the Haynesville Shale. Anadarko is continuing its Cotton Valley infill and pilot horizontal drilling programs in the Carthage area. Anadarko's East Texas Chalk activity is focused on horizontal drilling in Tyler and Jasper counties. In the Haynesville, Anadarko holds approximately 80,000 net acres, the vast majority of which is held by production. Along with partners, we continue to evaluate opportunities in this play.
West Texas
Anadarko's operations in West Texas are concentrated on increasing production and reserves in the tight-gas play of the Haley field. During 2007, Anadarko entered into a joint venture on a portion of the Haley field to reduce risk and increase acreage in the Delaware Basin.