Transocean Ltd. provides offshore contract drilling services for oil and gas wells. The company operates through two operating segments: Contract Drilling Services and Drilling Management Services. The Contract Drilling Services segment comprises mobile offshore drilling fleet, related equipment and work crews primarily on a day rate basis to drill oil and gas wells. It specializes in technically demanding regions of the offshore drilling business with a particular focus on deepwater and harsh environment drilling services. The segment consists of floaters, jack-ups and other rigs used in support of offshore drilling activities and offshore support services on a worldwide basis. The Drilling Management Services segment provides oil and gas drilling management services, as well as drilling engineering and drilling project management services. Transocean was founded in 1954 and is headquartered in Zug, Switzerland.