The Blackstone Group L.P. (NYSE:BX) and Sanchez Energy Corporation (NYSE:SN) have entered a strategic 50-50 partnership and together they have signed a definitive purchase agreement to acquire Anadarko Petroleum Corporation's working interest in approximately 318,000 gross operated acres in the Western Eagle Ford. Angelo Acconcia, a Senior Managing Director at Blackstone Energy Partners who oversees their oil and gas investments, said, "We are excited to form this strategic partnership with Sanchez Energy, to help effectuate this transformative acquisition and to help Sanchez Energy grow and facilitate future acquisitions in the area. Sanchez Energy is a best in class operator, with a synergistic asset base and is uniquely positioned to drive significant value from these assets and future acquisitions in the area."