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SandRidge Energy, Inc. (SandRidge) is an independent natural gas and oil company with its principal focus on exploration, development and production activities. The Company also owns and operates drilling rigs and a related oil field services company operating under the name Lariat Services, Inc.; gas gathering, marketing and processing facilities, and, through its wholly owned subsidiary PetroSource Energy Company, carbon dioxide (CO2) treating and transportation facilities and tertiary oil recovery operations. The Company is focused on exploration and exploitation of its significant holdings in West Texas that it refers to as the West Texas Overthrust (WTO), a natural gas prone geological region that includes the Pinon Field, and its South Sabino and Big Canyon prospects. SandRidge operates in four segments: exploration and production, drilling and oil field services, midstream gas services and other.