Tidewater Inc., together with its subsidiaries, provides offshore support vessels and marine support services to the offshore energy industry through the operation of a fleet of marine service vessels worldwide. It provides services in support of offshore oil and gas exploration, field development, and production, as well as windfarm development and maintenance, including towing of and anchor handling for mobile offshore drilling units; transporting supplies and personnel necessary to sustain drilling, workover, and production activities; offshore construction, and seismic and subsea support; geotechnical survey support for windfarm construction; and various specialized services, such as pipe and cable laying. The company operates anchor handling towing supply vessels, platform supply vessels, crew boats, utility vessels, and offshore tugs. The company serves integrated and independent oil and gas exploration, field development, and production companies; mid-sized and smaller independent exploration and production companies; foreign government-owned or government-controlled organizations, and other related companies; offshore drilling contractors; and other companies, such as offshore construction, windfarm development, diving, and well stimulation companies. Tidewater Inc. was incorporated in 1956 and is headquartered in Houston, Texas.

Transocean Ltd., together with its subsidiaries, provides offshore contract drilling services for oil and gas wells worldwide. It contracts mobile offshore drilling rigs, related equipment, and work crews to drill oil and gas wells. The company operates a fleet of mobile offshore drilling units, consisting of ultra-deepwater floaters and harsh environment floaters. It serves integrated energy companies, government-owned or government-controlled energy companies, and other independent energy companies. The company was founded in 1926 and is based in Steinhausen, Switzerland.

Seadrill Limited provides offshore contract drilling services to the oil and gas industry worldwide. The company owns and operates drill ships, semi-submersible rigs, and jack-up rigs for operations in shallow and ultra-deep-water in benign and harsh environments. It serves oil super-majors, state-owned national oil companies, and independent oil and gas companies. Seadrill Limited was formerly known as Seadrill 2021 Limited. The company was founded in 2005 and is based in Hamilton, Bermuda.

Helix Energy Solutions Group, Inc., together with its subsidiaries, an offshore energy services company, provides specialty services to the offshore energy industry in Brazil, the Gulf of Mexico, the East Coast of the United States, North Sea, the Asia Pacific, and West Africa regions. The company operates through four segments: Well Intervention, Robotics, Production Facilities, and Shallow Water Abandonment segments. It engages in the installation of flowlines, control umbilicals, and manifold assemblies and risers; trenching and burial of pipelines; installation and tie-in of riser and manifold assembly; commissioning, testing, and inspection activities; and provision of cable and umbilical lay, and connection services. The company also provides well intervention, intervention engineering, and production enhancement services; coiled tubing operations; inspection, repair, and maintenance of production structures, trees, jumpers, risers, pipelines, and subsea equipment; and related support services. In addition, it offers reclamation and remediation services; well plug and abandonment services; pipeline, cable and umbilical abandonment services; and site inspections. Additionally, the company offers oil and natural gas processing facilities and services; and fast response system, as well as site clearance and subsea support services. Further, it provides offshore oilfield decommissioning and reclamation, project management, engineered solutions, intervention, maintenance, repair, heavy lift, and commercial diving services. It serves independent oil and gas producers and suppliers, pipeline transmission companies, renewable energy companies, and offshore engineering and construction firms. The company was formerly known as Cal Dive International, Inc. and changed its name to Helix Energy Solutions Group, Inc. in March 2006. Helix Energy Solutions Group, Inc. was incorporated in 1979 and is headquartered in Houston, Texas.

Borr Drilling Limited operates as an offshore shallow-water drilling contractor to the oil and gas industry worldwide. The company owns, contracts, and operates jack-up drilling rigs for operations in shallow-water areas, including the provision of related equipment and work crews to conduct oil and gas drilling and workover operations for exploration and production. It serves oil and gas exploration and production companies, such as integrated oil companies, state-owned national oil companies, and independent oil and gas companies. The company was formerly known as Magni Drilling Limited and changed its name to Borr Drilling Limited in December 2016. Borr Drilling Limited was incorporated in 2016 and is based in Hamilton, Bermuda.

Nabors Industries Ltd. provides drilling and drilling-related services for land-based and offshore oil and natural gas wells in the United States and internationally. The company operates through four segments: U.S. Drilling, International Drilling, Drilling Solutions, and Rig Technologies. It provides tubular running services, including casing and tubing running, and torque monitoring; managed pressure drilling services; and drilling-bit steering systems and rig instrumentation software. The company also offers drilling systems comprising ROCKit, a directional steering control system; SmartNAV, a collaborative guidance and advisory platform; SmartSLIDE, a directional steering control system; and RigCLOUD, a digital infrastructure to integrate applications to deliver real-time insight into operations across the rig fleet. In addition, it operates a fleet of land-based drilling rigs and marketed platforms rigs; manufactures and sells top drives, catwalks, wrenches, drawworks, and other drilling related equipment, such as robotic systems and downhole tools; and provides aftermarket sales and services for the installed base of its equipment. Nabors Industries Ltd. was founded in 1952 and is based in Hamilton, Bermuda.

Oil States International, Inc., through its subsidiaries, provides engineered capital equipment and products for the energy, industrial, and military sectors worldwide. The company operates through three segments: Well Site Services, Downhole Technologies, and Offshore/Manufactured Products. The Well Site Services segment offers a range of equipment and services that are used to drill for, establish, and maintain the flow of oil and natural gas from a well throughout its lifecycle. It also provides wireline support, frac stacks, isolation tools, downhole and extended reach activity, well testing and flowback operations, sand control, and land drilling services. The Downhole Technologies segment provides oil and gas perforation systems, and downhole tools in support of completion, intervention, wireline, and well abandonment operations. This segment also designs, manufactures, and markets its consumable engineered products to oilfield service, and exploration and production companies. The Offshore/Manufactured Products segment designs, manufactures, and markets capital equipment utilized on floating production systems, subsea pipeline infrastructure, and offshore drilling rigs and vessels. Its products include flexible bearings, advanced connector systems, high-pressure riser systems, managed pressure drilling systems, deepwater mooring systems, cranes, subsea pipeline products, and blow-out preventer stack integration products. This segment also provides short-cycle products, such as valves, elastomers, and other specialty products that are used in the land-based drilling and completion markets; and other products for use in industrial, military, alternative energy, and other applications. In addition, it offers specialty welding, fabrication, cladding and machining, offshore installation, and inspection and repair services. The company was incorporated in 1995 and is headquartered in Houston, Texas.

Diamond Offshore Drilling, Inc. provides contract drilling services to the energy industry worldwide. As of December 31, 2023, the company operated a fleet of 13 offshore drilling rigs, including four drillships, seven semisubmersible rigs, and two managed rigs. It serves independent oil and gas companies, and government-owned oil companies. Diamond Offshore Drilling, Inc. was founded in 1953 and is headquartered in Houston, Texas.