Schlumberger Ltd., also known as Schlumberger NV, doing business as SLB, engages in the provision of energy technology. It operates through the following business segments: Digital and Integration, Reservoir Performance, Well Construction, and Production Systems. The Digital and Integration segment involves the combination of digital solutions and data products with its Asset Performance Solutions. The Reservoir Performance segment consists of technologies and services for productivity and performance optimization. The Well Construction segment includes the full portfolio of products and services for well placement and performance, drilling, and wellbore assurance. The Production Systems segment focuses on the development of technologies and provides services to 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.