Seadrill Ltd is an offshore drilling contractor company. The company is engaged in providing offshore drilling services to the oil and gas industry. The primary business of the company is the ownership and operation of drillships, semi-submersible rigs, and jack-up rigs for operations in shallow to ultra-deepwater areas in both benign and harsh environments. The geographical segments of the company are the United States, Brazil, Angola, Norway, Canada and others. The company derives maximum revenue from the United States.