HOUSTON — Western Gas Partners LP (NYSE: WES) is purchasing a natural
gas processing plant adjacent to its Fort Lupton plant from Encana Oil
& Gas (USA) Inc. Western Gas has agreed to pay Encana $303.3 million
for the plant, which has a current capacity of 84 million cubic feet
per day and is being expanded to 100 MMcf/d.

Under the acquisition agreement, Western Gas will also purchase
approximately 1,054 miles of pipeline, 18 compressors with a total of
14,306 horsepower, and other related assets in the Denver-Julesberg
Basin in northeastern Colorado.

“We are pleased to announce our first major third-party acquisition,”
said Western Gas Partners’ President and CEO Don Sinclair in announcing
the agreement Tuesday. “This transaction with a quality producer will
increase our position in what we believe is one of the most prolific and
exciting basins in North America.”

Western Gas, formed by Anadarko Petroleum Corp. to own, operate, acquire
and develop midstream energy assets, intends to finance the acquisition
under its $450 million revolving credit facility. The transaction is
expected to close in the first quarter of 2011, subject to regulatory
approval.

For more information visit www.westerngas.com.