Pioneer Natural Resources Announces Second Quarter 2011 Earnings Press Release Date and Conference Call.

DALLAS -- Pioneer Natural Resources Company ("Pioneer") (NYSE:PXD) today announced its second quarter 2011 earnings press release is scheduled to be issued after the close of trading on the New York Stock Exchange on Wednesday, August 3, 2011.

A conference call is scheduled for Thursday, August 4, 2011 at 10:00 a.m. CT to discuss the second quarter results. Instructions on how to listen to the call and view the accompanying presentation are shown below.

Internet: www.pxd.com

Select "Investors," then "Earnings Calls & Webcasts" to listen to the discussion and view the presentation.

Telephone: Dial (877) 741-4245 confirmation code: 3333505 five minutes before the call. View the presentation via Pioneer's internet address above.

A replay of the webcast will be archived on Pioneer's website. A telephone replay will be available through August 25 by dialing (888) 203-1112, confirmation code: 3333505.

Pioneer is a large independent oil and gas exploration and production company, headquartered in Dallas, Texas, with operations primarily in the United States. For more information, visit Pioneer's website at www.pxd.com.