Schlumberger NV engages in the provision of technology for reservoir characterization, drilling, production and processing to the oil and gas industry. It operates through the following business segments: Digital and Integration; Reservoir Performance; Well Construction; and Production Systems. The Digital and Integration segment combines the company's software and seismic businesses with its integrated offering of asset performance solutions. The Reservoir Performance segment consists of reservoir-centric technologies and services that are critical to optimizing reservoir productivity and performance. The Well Construction segment includes the full portfolio of products and services to optimize well placement and performance, maximize drilling efficiency, and improve wellbore assurance. The Production Systems segment develops technologies and provides expertise that enhances production and recovery from subsurface reservoirs to the surface, into pipelines, and to refineries. The company was founded by Conrad Schlumberger and Marcel Schlumberger in 1926 and is headquartered in Houston, TX.