Schlumberger Limited is the largest oilfield services company in the world, providing a wide range of products and services from exploration to production. The company was founded in 1926 as the Société de Prospection Électrique, and was incoporated as a holding business in 1956. The company has operations in over 85 countries around the world and employs 120,000 workers. Schlumberger Limited is headquartered in Houston, Texas, U.S.