SandRidge Energy, Inc. is an oil and natural gas company. The Company is engaged in the exploration, development and production of crude oil, natural gas and natural gas liquids. It operates through two segments: exploration and production, which is engaged in the exploration and production of oil and natural gas properties and includes its proportionate share of the activities of the SandRidge Mississippian Trust I, SandRidge Mississippian Trust II and SandRidge Permian Trust (the Royalty Trusts), and midstream services, which coordinates the delivery of electricity to its exploration and production operations in the Mid-Continent. It focuses on exploration and production activities in the Mid-Continent and Rockies regions of the United States. It owns and operates additional interests in west Texas. It also operates businesses and infrastructure systems, including a saltwater gathering and disposal system, and an electrical transmission system.