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Diamond Offshore Drilling, Inc. provides contract drilling services to the energy industry worldwide. The company operates a fleet of 13 offshore drilling rigs, including four drillships and nine semisubmersible rigs. It serves independent oil and gas companies, and government-owned oil companies. The company was founded in 1953 and is headquartered in Houston, Texas. Diamond Offshore Drilling, Inc. is a subsidiary of Loews Corporation. On April 26, 2020, Diamond Offshore Drilling, Inc., along with its affiliates, filed a voluntary petition for reorganization under Chapter 11 in the United States Bankruptcy Court for the Southern District of Texas.

Pacific Drilling S.A., together with its subsidiaries, operates as an offshore drilling contractor in the United States, Nigeria, and internationally. It provides offshore drilling services to the oil and natural gas industry. The company contracts its fleet of rigs to drill wells for its customers. It has a fleet of seven drillships. Pacific Drilling S.A. was founded in 2006 and is headquartered in Houston, Texas. On October 30, 2020, Pacific Drilling S.A., along with its affiliates, filed a voluntary petition for reorganization under Chapter 11 in the U.S. Bankruptcy Court for the Southern District of Texas.

Petroteq Energy Inc., through its subsidiaries, engages in the oil sands mining and processing operations in the United States. It holds rights to mine, extract, and produce oil and associated hydrocarbons and minerals from oil sands containing heavy oil and bitumen under mineral leases covering approximately 1,671,91 acres in the Asphalt Ridge area of Utah, including 320 acres held under the TMC Mineral Lease and an additional 1,351.91 acres held under three Temple Mountain State of Utah's School and Institutional Trust Land Administration Leases. The company also operates rights under five leases covering lands consisting of approximately 5,960 acres situated in Uintah, Wayne, and Garfield Counties, Utah. In addition, it is developing a blockchain-powered supply chain management platform for the oil and gas industry. The company was formerly known as MCW Energy Group Limited and changed its name to Petroteq Energy Inc. in May 2017. Petroteq Energy Inc. was founded in 2010 and is based in Sherman Oaks, California.

Valaris Limited, together with its subsidiaries, provides offshore contract drilling services Gulf of Mexico, South America, North Sea, the Middle East, Africa, and the Asia Pacific. The company operates through four segments: Floaters, Jackups, ARO, and Other. It owns an offshore drilling rig fleet, which include drillships, dynamically positioned semisubmersible rigs, moored semisubmersible rig, and jackup rigs. It serves international, government-owned, and independent oil and gas. Valaris Limited was founded in 1975 and is based in Hamilton, Bermuda.

Western Energy Services Corp. operates as an oilfield service company in Canada and the United States. It operates through Contract Drilling and Production Services segments. The Contract Drilling segment provides contract drilling services using drilling rigs and auxiliary equipment. The Production Services segment offers well servicing rig and related equipment, as well as rental equipment services. Western Energy Services Corp. is headquartered in Calgary, Canada.