Schlumberger NV operates as an oilfield services company, which supplies technology, project management and information solutions for the oil and gas industry. The company operates through three segments: Reservoir Characterization Group, Drilling Group and Production Group. The Reservoir Characterization Group consists of the principal technologies involved in finding and defining of hydrocarbon deposits. The Reservoir Characterization Group consists of the principal technologies involved in finding and defining hydrocarbon deposits. These include WesternGeco, Wireline, Testing Services, Schlumberger Information Solutions and Data & Consulting Services. The WesternGeco is a geophysical services company, providing comprehensive worldwide reservoir imaging, monitoring and development services. The Wireline provides the information necessary to evaluate subsurface formation rocks and fluids to plan and monitor well construction, and to monitor and evaluate well production. It offers both open hole and cased hole services, including wireline perforating. The Testing Services provides exploration and production pressure and flow-rate measurement services both at the surface and down hole. The technology also provides tubing-conveyed perforating services. The Schlumberger Information Solutions provides software, consulting, information management and IT infrastructure services that support core oil and gas industry operational processes. The Data & Consulting Services supplies interpretation and integration of all exploration and production data types, as well as expert consulting services for reservoir characterization, production enhancement, field development planning and multi-disciplinary reservoir and production solutions. It also provides industry petrotechnical training solutions. The Drilling Group consists of the principal technologies involved in the drilling and positioning of oil and gas wells and comprises Bits & Advanced Technologies, M-I SWACO, Geoservices, Drilling & Measurements, PathFinder, Drilling Tools & Remedial, Dynamic Pressure Management and Integrated Project Management well construction projects. The Bits & Advanced Technologies designs, manufactures and markets roller cone and fixed cutter drill bits for all environments. The technologies leverage proprietary modeling and simulation software for the design of application-specific bits and cutting structures. The M-I SWACO supplies drilling fluid systems engineered to improve drilling performance by anticipating fluids-related problems, fluid systems and specialty equipment designed to optimize wellbore productivity and production technology solutions formulated to maximize production rates. The technology also includes environmental solutions that safely manage waste volumes generated in both drilling and production operations. The Geoservices supplies mud logging services for geological and drilling surveillance. The Drilling & Measurements and PathFinder supplies engineering support, directional-drilling, measurement-while-drilling and logging-while-drilling services for all well profiles. The Drilling Tools & Remedial provides a wide variety of bottom hole assembly drilling tools, borehole enlargement technologies and impact tools, as well as a comprehensive collection of tubulars and tubular services for oil and gas drilling operations. The Dynamic Pressure Management consolidates managed pressure drilling and underbalanced drilling into a single provider of engineered solutions for pressure drilling services. The Reservoir Production Group consists of the principal technologies involved in the lifetime production of oil and gas reservoirs and includes Well Services, Completions, Artificial Lift and Well Intervention, Subsea, Water Services, Carbon Services and Schlumberger Production Management field production projects. The Well Services provides services used during oil and gas well drilling and completion storage solutions, as well as those used to maintain optimal production throughout the life of a well. The services include pressure pumping, well cementing and stimulation operations as well as intervention activities. The Completions supplies well completion services and equipment that include packers, safety valves, sand control technology, as well as a range of intelligent well completions technology and equipment. The Artificial Lift provides production equipment and optimization services using electrical submersible pumps and gas lift equipment, as well as surface horizontal pumping systems. The Well Intervention develops coiled tubing equipment and services and provides slickline services for downhole mechanical well intervention, reservoir monitoring and downhole data acquisition. The Subsea offers solutions that are designed to improve reservoir recovery, optimize production and maximize production uptime of subsea assets. The Water Services is specialized in the development, management and environmental protection of water resources. The Carbon Services provides comprehensive geological storage solutions, including storage site characterization for carbon dioxide. The Schlumberger Oilfield Services also offers customers its services through business models known as Integrated Project Management and Schlumberger Production Management. These models combine the required services and products of the technologies with both drilling rig management expertise and project management skills to provide a complete solution to well construction and production improvement. The Distribution segment is a provider of pipes, valves and valve automation, fittings, mill and tool supplies, safety products and artificial lift systems to the energy and industrial markets. It also provides warehouse management, vendor integration and various inventory management services. The company was founded by Conrad Schlumberger and Marcel Schlumberger in 1926 and is headquartered in Houston, TX.