2009-09-09-2009-07-31-2009-09-01

Acquired operated interests in 67 wells in TX Austin chalk, gaining 22 Bcfe proved, 6.6 MMcfe/d.

EnerVest Ltd., Houston, has acquired operated interests in the Texas Austin chalk formation from Marathon Oil Corp., Houston, (NYSE: MRO) for $35.1 million. The assets include 100% working interest in 67 wells in Lee, Fayette and Brazos counties, Texas. Net proved reserves are 22 billion cubic feet equivalent. Production is 6.6 million cubic feet equivalent per day.