2009-11-30 22:02:55 -

Pioneer Southwest Energy Partners L.P. (“Pioneer Southwest”) (NYSE:PSE) today announced that Rich Dealy, Executive Vice President and CFO, will present at the Pipeline and MLP Symposium on December 8, 2009 at 4:05 p.m. E.T.

Any interested person may listen to the live presentation and view the presentation slides during the conference, or hear an archived version afterwards, by logging on to Pioneer Southwest Energy's website www.pioneersouthwest.com : , selecting ‘Investors,’ and then selecting ‘Investor Presentations.’


Pioneer Southwest is a Delaware limited partnership headquartered in Dallas. Pioneer Natural Resources formed Pioneer Southwest to own and acquire oil and gas assets in its area of operations. This area includes onshore Texas and eight counties in the southeast region of New Mexico.



Pioneer

Southwest Energy Partners L.P.InvestorsFrank

Hopkins, 972-969-4065orNolan Badders, 972-969-3955orMedia
and Public AffairsSusan Spratlen, 972-969-4018orSam
Hicks, 972-969-4020