Berge Gerdt Larsen

Odfjell Drilling AS provides drilling, engineering, and well service contractors. It also owns and operates submersible drilling rigs. The company was founded on March 21, 2002 and is headquartered in Bergen, Norway.

Petrolia ASA charters and invests in drilling vessels for offshore oil and gas drilling. It is also involved in worldwide oilfield services related to rental of oilfield equipment, tubular running services, and other related services. It operates through the following segments: Oilfield Services, Drilling and Well, and Oil and Gas. The company was founded on March 17, 1997 and is headquartered in Oslo, Norway.

Larsen Oil & Gas AS engages in the development, construction, and operation of drilling and production platforms. The company was founded on November 11, 2016 and is headquartered in Oslo, Norway.

Petrojack ASA engages in drilling of oil and gas in shallow waters. The company's objective is purchase and operation of drilling vessels and everything that is connected herewith including partnership in other companies. The firm purpose is to secure the shareholders competitive return for the invested capital in the longer term. Petrojack was founded on October 4th, 2004 and is headquartered in Paradis, Norway.

PetroMena AS provides performance drilling units for the ultra deep water drilling market segment. It operates under management by Larsen Oil & Gas, which is an international drilling and production contractor. It specializes in the development, construction and operation of semi-submersibles and jack-up drilling platforms, FPSOs and mobile combined drilling and production platforms. The company was founded in January 2005 and is headquartered in Paradis, Norway.