Seadrill Limited is an offshore drilling contractor providing offshore drilling services to the oil and gas industry. The Company's primary business is the ownership and operation of drillships, semi-submersible rigs and jack-up rigs for operations in shallow-, mid-, deep-, and ultra deepwater areas, and in benign and harsh environments. The Company's segments are Floaters and Jack-ups. The Company offers services encompassing drilling, completion and maintenance of offshore exploration and production wells. The Company contracts its drilling units primarily on a dayrate basis to drill wells for its customers. The Company has a fleet of approximately 38 offshore drilling units consisting of over 12 semi-submersible rigs, approximately seven drillships and over 19 jack-up rigs in operation, and contracts for the construction of approximately 13 offshore drilling units. The Company also provides management services to certain unconsolidated companies in which its holds investments.