DALLAS--(BUSINESS WIRE)-- Pioneer Southwest Energy Partners L.P. (PSE) (Pioneer Southwest) today announced a cash distribution of $0.52 per unit for the quarter ended June 30, 2012, on Pioneer Southwest's outstanding common units. This quarterly distribution equates to $2.08 per common unit on an annual basis.

The distribution is payable August 9, 2012, to unitholders of record at the close of business on August 2, 2012.

Pioneer Southwest is a Delaware limited partnership, headquartered in Dallas, Texas, with current production and drilling operations in the Spraberry field in West Texas. For more information, visit www.pioneersouthwest.com.

Pioneer Southwest Energy Partners L.P.
Investors
Frank Hopkins, 972-969-4065
or
Eric Pregler, 972-969-5756
or
Casey Edwards, 972-969-5759
or
Media and Public Affairs
Susan Spratlen, 972-969-4018
or
Suzanne Hicks, 972-969-4020

Source: Pioneer Southwest Energy Partners L.P.