Petter Tomren

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.

ProSafe Drilling Services AS provides oil and gas drilling services. It offers semi-submersible accommodation services and operates floating production and storage vessels. The company is headquartered in Bergen, Norway.

COSL Holding AS provides offshore drilling services. It has three jack-up drilling rigs and three semi submersible drilling rigs under construction at yards in Singapore and China. The company operates in the United Kingdom, Norway, Saudi Arabia, Australia, and Vietnam. It was founded in January 2005 and is headquartered in Oslo, Norway.

Tracid AS utilizes radio-frequency identification technology within the oil and gas industry. It solutions AutoTally creates drill string tally in real time. Its TracASSET is a hardware and software solution for asset management utilizing RFID technology, designed for the oil and gas industry and other harsh environments. It also offers TracTag and TracPlates, which is used when electronic identification technology is applied to assets and resources in addition to the more common physical identification tags. The company was founded in 2005 and is headquartered in Stavanger, Norway.

Interwell AS manufactures and distributes tools for gas and oil industry. It supplies mechanical downhole products for the well barrier. The firm's products include bridge plugs, wire line products, coiled tubing products, completion products, straddle, and packer solutions. It also provides customer and technical support; design and development; workshop; and operations. The company was founded in 1992 and is headquartered in Hafrsfjord, Norway.

Norshore Holding AS provides drilling and well services. Its services include top hole drilling, riserless drilling, riserless plug and abandonment, well intervention, and sub-sea construction. The firm also manages and operates a multi-functional vessel, submersible rigs,and offshore equipment. The company was founded on April 17, 2008 and is headquartered in Straume, Norway.