Schlumberger Limited supplies technology products and services to the oil and gas exploration and production industry worldwide. The company’s Reservoir Characterization Group segment provides reservoir interpretation and data processing services; open and cased-hole services; slickline services; exploration and production pressure and flow-rate measurement services at the surface and downhole; software integrated solutions, such as software, consulting, information management, and IT infrastructure services; consulting services for reservoir characterization, field development planning, and production enhancement; and petrotechnical data services and training solutions, as well as integrated management services. Its Drilling Group segment designs, manufactures, and markets roller cone and fixed cutter drill bits; supplies drilling fluid systems; provides pressure drilling and underbalanced drilling solutions, and environmental services and products, as well as mud logging, and land drilling rigs and support services; and offers well planning and drilling, engineering, supervision, logistics, procurement, contracting, and drilling rig management services, as well as bottom-hole-assembly, borehole-enlargement technologies, impact tools, tubulars, and tubular services. The company’s Production Group segment provides well services comprising pressure pumping, well cementing, and stimulation; hydraulic fracturing, multistage completions, perforating, coiled tubing equipment, and services; well completion services and equipment, such as packers, safety valves, and sand control technology; artificial lifts; and integrated production and production management services. Its Cameron Group segment offers integrated subsea production systems; surface systems; drilling equipment and services; and valve products and measurement systems. The company was formerly known as Socie´te´ de Prospection E´lectrique. Schlumberger Limited was founded in 1926 and is based in Houston, Texas.