Jon Osthus

Smedvig Ltd. specializes in the operation and management of mobile drilling rigs for offshore oil and gas exploration. The private company is based in London, UK. and has subsidiaries in United Kingdom.

Eastern Drilling AS owns and operates offshore oil rigs and drilling vessels. It is an offshore drilling company that develops semi-submersible drilling rigs for operations in harsh and deep water environments. The company was founded on March 4, 1997 and is headquartered in Stavanger, Norway.

Seadrill Ltd. engages in the provision of offshore drilling services to the oil and gas industry. It operates through the following segments: Harsh Environment, Floaters, Jack-up rigs, and Other. The Harsh Environment segment include both semi-submersibles and jack-ups that have a number of design modifications to be able to handle to weather conditions as seen in the North Sea and Canada. The Floaters segment encompasses drilling, completion, and maintenance of offshore exploration and production wells. the Jack-up Rigs segment includes drilling contracts relate to jack-up rigs for operations in harsh and benign environments in shallow water. The Other segment represents management services to third parties and related parties. The company was founded on May 10, 2005 and is headquartered in Hamilton, Bermuda.

Scorpion Offshore, Inc. provides offshore contract drilling services. The company is headquartered in Houston, TX.

Asia Offshore Drilling Ltd. owns and operates a fleet of modern high specification jack-up rigs. It intends to provide drilling services in shallow-water oil and gas exploration and production areas through the world. Asia Offshore Drilling was founded on October 29, 2010 and is headquartered in Hamilton, Bermuda.

Seadrill T-16 Ltd. owns, operates and acquires offshore drilling rigs. The company is headquartered in Hamilton, Bermuda.

Part of Seadrill Ltd., Seadrill Management Ltd. provides management and operational services relating to various drilling units. The private company is based in London, UK. The CEO of the British company is Simon William Johnson.

Part of Seadrill Ltd., Seadrill Tellus Ltd. is a Bermudian company that provides offshore deepwater drilling services.