Schlumberger NV engages in the business of information and technology. It provides integrated project management solutions to the international oil and gas exploration and production industries. The company operates through the following segments: Reservoir Characterization Group, Drilling Group, Production Group and Cameron Group. The Reservoir Characterization Group segment consists of the principal technologies involved in finding and defining hydrocarbon resources such as WesterGeco, Wireline, testing services, software integrated solutions and integrated services management. The Drilling Group segment refers to principal technologies engaged in the drilling and positioning of oil and gas wells such as bits and drilling tolls, drilling and measurement, land rigs, and integrated drilling services. The Production Group segment provides technologies involves in the lifetime production of oil and gas reservoirs such as well services, completions, artificial lift, well intervention, water service, integrated production services and others. The Cameron Group segment consists of the principal Technologies involved in pressure and flow control for drilling and intervention rigs, oil and gas wells and production facilities. The company was founded by Conrad Schlumberger and Marcel Schlumberger in 1926 and is headquartered in Houston, TX.