Divestiture	3 Months Ended
Mar. 31, 2012
Divestiture Abstract
Divestiture	(2) DIVESTITURES In May 2012, we sold certain oil and natural gas leases, wells and gathering equipment in East Texas for approximately $175.0 million, excluding typical purchase price adjustments. The proceeds were deposited with a qualified intermediary to facilitate potential like-kind exchange transactions pursuant to Section 1031 of the Internal Revenue Code and, unless utilized for one or more like-kind exchange transactions, are restricted in their use until October 2012. The assets included in the sale represented all of our interests and related assets in the Overton Field in Smith County. Our net production from the sold assets was approximately 23.0 MMcfe per day as of the closing date and our net proved reserves were approximately 138.0 Bcfe at December 31, 2011. In May 2011, we sold certain oil and natural gas leases, wells and gathering equipment in East Texas for approximately $118.1 million. The sale included only the producing rights to the Haynesville and Middle Bossier Shale intervals in approximately 9,717 net acres. The net production from the Haynesville and Middle Bossier Shale intervals in this acreage was approximately 7.0 MMcf per day and proved net reserves were approximately 37.1 Bcf when the sale was closed in May 2011.

Divestiture

3 Months Ended

Mar. 31, 2012

(2) DIVESTITURES

In May 2012, we sold certain oil and natural gas leases, wells and gathering equipment in East Texas for

approximately $175.0 million, excluding typical purchase price adjustments. The proceeds were deposited with a qualified intermediary to facilitate potential like-kind exchange transactions pursuant to Section 1031 of the Internal Revenue Code and, unless utilized for one or more like-kind exchange transactions, are restricted in their use until October 2012. The assets included in the sale represented all of our interests and related assets in the Overton Field in Smith County. Our net production from the sold assets was approximately 23.0 MMcfe per day as of the closing date and our net proved reserves were approximately 138.0 Bcfe at December 31, 2011.

In May 2011, we sold certain oil and natural gas leases, wells and gathering equipment in East Texas for approximately $118.1 million. The sale included only the producing rights to the Haynesville and Middle Bossier Shale intervals in approximately 9,717 net acres. The net production from the Haynesville and Middle Bossier Shale intervals in this acreage was approximately 7.0 MMcf per day and proved net reserves were approximately 37.1 Bcf when the sale was closed in May 2011.