Schlumberger Limited supplies technology, integrated project management, and information solutions to the oil and gas exploration and production industry worldwide. Its Reservoir Characterization Group segment provides reservoir imaging, monitoring, and development services; wireline technologies for open and cased-hole services; exploration and production pressure and flow-rate measurement services comprising surface and downhole services; 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. The company’s 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; mud logging services; land drilling rigs and related support services; and 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. Its Production Group segment provides well services comprising pressure pumping, well cementing, stimulation, and intervention services; well completion services and equipment that include packers, safety valves, and sand control technology, as well as completions technology and equipment; artificial lifts; coiled tubing equipment and services, and slickline services; development, management, and environmental protection services for water resources; and integrated production and production management services. The company was founded in 1926 and is based in Paris, France.