ENSCO International is a premier worldwide offshore oil and gas drilling contractor. The company owns nearly 50 offshore rigs, and has three rigs under construction, servicing domestic and international markets. ENSCO is focused on the offshore contract drilling business that is essential to oil companies in their worldwide exploration and development efforts. It owns and operates one of the worlds largest and most capable fleets of premium rigs with more than 40 jackups. To address the deepwater market, the company owns a fifth generation, deepwater semisubmersible and has two ENSCO 8500 Series units under construction. Additionally, ENSCO owns one platform rig and one barge rig. The companys modern fleet serves most of the major oil and gas provinces of the world through three major business units, including North and South America, Europe and Africa and Asia and Pacific Rim. ENSCO International is headquartered in Dallas.