Ross William Gallup

Rowan Cos., Inc. engages in the provision of contract drilling services to the oil and gas industry. The company was founded by Charles Rowan and Archibald Rowan in 1923 and is headquartered in Houston, TX.

Part of Valaris Ltd., Rowan (UK) Reliance Ltd. provides professional, scientific and technical services. The private company is based in London, UK.

Part of Valaris Ltd., Rowan (UK) Renaissance Ltd. is a British company that provides drilling services. The private company is based in London, UK.

Part of Valaris Ltd., Rowan (UK) Resolute Ltd. provides business support services. The private company is based in London, UK.

Part of Valaris Ltd., Rowan (UK) Relentless Ltd. is a British company that provides business support services. The private company is based in London, UK and was founded in 2013.

Noble Corp. Plc engages in the provision offshore drilling services for oil and gas industry. It focuses on a balanced fleet of floating and jackup rigs and the deployment of drilling rigs in oil and gas basins around the world. The company was founded by Lloyd Noble and Art Olson in 1921 and is headquartered in Sugar Land, TX.

Pride International, Inc. operates as an offshore drilling contractors. The firm provides contract drilling and related services to oil and gas companies. It offers services through the use of mobile offshore drilling rigs and rig management services on various rigs, including technical drilling assistance, personnel, repair and maintenance, and drilling operation management services. The company was founded in on June 24, 1988 and is headquartered in Houston, TX.