Sabine Oil & Gas Corporation, formerly Forest Oil Corporation, is an oil and natural gas company. The Company is engaged in the acquisition, development, exploitation and exploration of oil and natural gas properties in North America. The Company operates through the oil and gas exploration and production segment. Its properties are primarily focused in three geographic areas: East Texas, targeting the Cotton Valley Sand, Haynesville Shale and Pettet formations; South Texas, targeting the Eagle Ford Shale formation, and North Texas, targeting the Granite Wash formation. Its East Texas portion of properties is characterized by various productive horizons, such as the Cotton Valley Sand, Haynesville Shale, Haynesville Lime, Pettet, Bossier Shale, Travis Peak and other formations. It holds interests in approximately 272,100 gross (217,000 net) acres in East Texas, over 82,900 gross (53,400 net) acres in South Texas and approximately 33,900 gross (25,300 net) acres in North Texas.