NOV Inc. designs, constructs, manufactures, and sells systems, components, and products for oil and gas drilling and production, and industrial and renewable energy sectors in the United States and internationally. It operates through two segments, Energy Equipment, and Energy Products and Services. The company provides solids control and waste management equipment and services, managed pressure drilling, drilling fluids, premium drillpipe, wired pipe, drilling optimization services, tubular inspection and coating services, instrumentation, downhole tools, and drill bits. It also offers equipment and technologies for hydraulic fracture stimulation, including downhole multistage fracturing tools, pressure pumping trucks, blenders, sanders, hydration and injection units, flowline, and manifolds; coiled tubing units, and wireline units and tools; connections and liner hangers; onshore production consists of composite pipe, surface transfer and progressive cavity pumps, and artificial lift systems; and offshore production, such as floating production systems and subsea production technologies, as well as manufactures industrial pumps and mixers. In addition, the company provides substructures, derricks, and masts; cranes; jacking systems; pipe lifting, racking, rotating, and assembly systems; mud pumps; pressure control equipment; drives and generators; rig instrumentation and control systems; mooring, anchor, and deck handling machinery; equipment components for offshore wind construction vessels; and pipelay and construction systems. Further, the company offers spare parts, repair, and rentals as well as comprehensive remote equipment monitoring, technical support, field service, and customer training. The company was formerly known as National Oilwell Varco, Inc. and changed its name to NOV Inc. in January 2021. NOV Inc. was founded in 1862 and is based in Houston, Texas.

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.

Precision Drilling Corporation, a drilling company, provides onshore drilling, completion, and production services to exploration and production companies in the oil and natural gas and geothermal industries in North America and the Middle East. The company operates through Contract Drilling Services and Completion and Production Services segments. The Contract Drilling Services segment offers onshore well drilling services to exploration and production companies in the geothermal, oil and natural gas industry. This segment offers services include land and turnkey drilling; and procurement and distribution of oilfield supplies, as well as manufacture and repair of drilling and service rig equipment. In addition, it operates land drilling rigs in Canada, the United States, and the Middle East, as well as operates AlphaAutomation, AlphaApps, and AlphaAnalytics data services. The company offers EverGreen suite of environmental solutions comprising EverGreenMonitoring, EverGreenEnergy, and EverGreen Fuel Cell. The Completion and Production Services segment provides service rigs for well completion, workover, abandonment, maintenance, and re-entry preparation services; equipment rentals; and camp and catering services to oil and natural gas exploration and production companies. This segment operates well completion and workover service rigs in Canada and the United States. Precision Drilling Corporation was founded in 1951 and is headquartered in Calgary, Canada.

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.

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.

Independence Contract Drilling, Inc. provides land-based contract drilling services for oil and natural gas producers in the United States. It operates a fleet of pad-optimal and superspec AC powered rigs in the Permian Basin and the Haynesville Shale. The company was incorporated in 2011 and is headquartered in Houston, Texas.