Schlumberger Limited engages in the provision of technology for the energy industry worldwide. The company operates through four divisions: Digital & Integration, Reservoir Performance, Well Construction, and Production Systems. The company provides field development and hydrocarbon production, carbon management, and integration of adjacent energy systems; reservoir interpretation and data processing services for exploration data; and well construction and production improvement services and products. It also offers subsurface geology and fluids evaluation information; open and cased hole services; exploration and production pressure, and flow-rate measurement services; and pressure pumping, well stimulation, and coiled tubing equipment solutions. In addition, the company offers mud logging, directional drilling, measurement-while-drilling, and logging-while-drilling services, as well as engineering support services; supplies drilling fluid systems; designs, manufactures, and markets roller cone and fixed cutter drill bits; bottom-hole-assembly and borehole enlargement technologies; well cementing products and services; well planning, well drilling, engineering, supervision, logistics, procurement, and contracting of third parties, as well as drilling rig management solutions; and drilling equipment and services, as well as land drilling rigs and related services. Further, it provides artificial lift production equipment and optimization services; supplies packers, safety valves, sand control technology, and various intelligent well completions technology and equipment; designs and manufactures valves, chokes, actuators, and surface trees; and OneSubsea, an integrated solutions, products, systems, and services, including wellheads, subsea trees, manifolds and flowline connectors, control systems, connectors, and services. The company was formerly known as Socie´te´ de Prospection E´lectrique. Schlumberger Limited was founded in 1926 and is based in Houston, Texas.

Halliburton Company provides products and services to the energy industry worldwide. It operates through two segments, Completion and Production, and Drilling and Evaluation. The Completion and Production segment offers production enhancement services that include stimulation and sand control services; cementing services, such as well bonding and casing, and casing equipment; and completion tools that offer downhole solutions and services, including well completion products and services, intelligent well completions, and service tools, as well as liner hanger, sand control, and multilateral systems. This segment also provides electrical submersible pumps, as well as artificial lift services; production solutions comprising coiled tubing, hydraulic workover units, downhole tools, and pumping and nitrogen services; pipeline and process services, such as pre-commissioning, commissioning, maintenance, and decommissioning; and specialty chemicals and services. The Drilling and Evaluation segment offers drilling fluid systems, performance additives, completion fluids, solids control, specialized testing equipment, and waste management services; drilling systems and services; wireline and perforating services consists of open-hole logging, and cased-hole and slickline; and drill bits and services comprising roller cone rock bits, fixed cutter bits, hole enlargement, and related downhole tools and services, as well as coring equipment and services. This segment also provides cloud based digital services and artificial intelligence solutions on an open architecture for subsurface insights, integrated well construction, and reservoir and production management; testing and subsea services, such as acquisition and analysis of reservoir information and optimization solutions; and project management and integrated asset management services. Halliburton Company was founded in 1919 and is based in Houston, Texas.

TechnipFMC plc engages in the energy projects, technologies, and systems and services businesses in Europe, Central Asia, North America, Latin America, the Asia Pacific, Africa, the Middle East, and internationally. It operates through two segments: Subsea and Surface Technologies. The Subsea segment engages in the design, engineering, procurement, manufacturing, fabrication, installation, and life of field services for subsea systems, subsea field infrastructure, and subsea pipe systems used in oil and gas production and transportation. It provides subsea production and processing system; flexible pipe; subsea umbilicals, risers, and flowlines; vessels; robotics; well and asset services; and Subsea Studio for optimizing the development, execution, and operation of current and future subsea fields. The Surface Technologies segment designs, manufactures, and services products and systems used in land and shallow water exploration and production of crude oil and natural gas. This segment offers drilling; surface wellheads and production trees systems; iComplete, a pressure control system; fracturing tree and manifold systems; flexible pipes; safety and integrity systems, multiphase meter modules, in-line separation and processing systems, and standard pumps; well control and integrity systems; separation and processing systems; skid systems; and flow measurement and automation solutions. It also offers planning, testing and installation, commissioning, operations, replacement and upgrade, maintenance, storage, preservation, intervention, integrity, decommissioning, and abandonment; and supplies flowline products and services. TechnipFMC plc was founded in 1884 and is headquartered in Houston, Texas.

Weatherford International plc, an energy services company, provides equipment and services for the drilling, evaluation, completion, production, and intervention of oil, geothermal, and natural gas wells worldwide. The company operates through three segments: Drilling and Evaluation; Well Construction and Completions; and Production and Intervention. It offers artificial lift systems, including reciprocating rod, progressing cavity pumping, gas, hydraulic, plunger, and hybrid lift systems, as well as related automation and control systems; pressure pumping and reservoir stimulation services, such as acidizing, fracturing, cementing, and coiled-tubing intervention; and software, automation and flow measurement solutions. The company also provides safety, downhole reservoir monitoring, flow control, and multistage fracturing systems, as well as sand-control technologies, and production and isolation packers; liner hangers to suspend a casing string in high-temperature and high-pressure wells; cementing products, including plugs, float and stage equipment, and torque-and-drag reduction technology for zonal isolation; and pre-job planning and installation services. In addition, it offers directional drilling services, and logging and measurement services while drilling; services related to rotary-steerable systems, high temperature and high pressure sensors, drilling reamers, and circulation subs; rotating control devices and advanced automated control systems, as well as closed loop drilling, air drilling, managed-pressure drilling, and underbalanced drilling services; open-hole and cased-hole logging services; and intervention and remediation services. Further, it provides tubular handling, management, and connection services; and re-entry, fishing, and well abandonment services, as well as patented bottom hole, tubular-handling equipment, pressure-control equipment, and drill pipe and collars. The company was incorporated in 1972 and is based in Houston, Texas.

Patterson-UTI Energy, Inc., through its subsidiaries, engages in the provision of contract drilling services to oil and natural gas operators in the United States and internationally. It operates through three segments: Drilling Services, Completion Services, and Drilling Products. The Contract Drilling Services segment provides contract and directional drilling services in onshore oil and natural gas basins, as well as engages in the service and re-certification of equipment for drilling contractors, and provision of electrical controls and automation to the energy, marine and mining industries. The Completion Services segment offers services for hydraulic fracturing, wireline and pumping, completion support, and cementing; and involved in the power solutions natural gas fueling, and logistics and storage businesses. The Drilling Products segment manufactures and distributes drill bits for energy and mining markets. It also provides software and services, such as MWD Survey FDIR, a data analytics technology to analyze MWD survey data in real-time and identify the position of a well; HiFi Nav, which enhances FDIR by targeting improved vertical placement of the directional well within the reservoir; HiFi Guidance, utilizes trajectory optimization to determine optimal steering recommendations and placement within the reservoir; and rents oilfield tools. The company was founded in 1978 and is headquartered in Houston, Texas.

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.

KLX Energy Services Holdings, Inc. provides drilling, completions, production, and well intervention services and products to the onshore oil and gas producing regions of the United States. The company operates through three segments: Southwest, Rocky Mountains, and Northeast/Mid-Con. It provides directional drilling services; downhole navigational and rental tools businesses and support services, including well planning, site supervision, accommodation rentals, and other drilling rentals; and various technologies, including gamma ray, azimuthal gamma ray, real-time continuous inclination and azimuth, rotary steerable, pressure-while-drilling, mode shifting, stick-slip and destructive dynamics, dynamic sequencing and real-time shock, and vibration modules. The company also offers coiled tubing and nitrogen services; wireline services, including pump down perforating, logging, and pipe recover; pressure control products and services; wellhead and hydraulic fracturing rental products and services; flowback and testing services; thru-tubing technologies and services; rig assist snubbing services; cementing products and services; acidizing and pressure pumping services; and downhole completion tools, such as toe sleeves, wet shoe cementing bypass subs, composite plugs, dissolvable plugs, liner hangers, stage cementing tools, inflatables, float and casing equipment, and retrievable completion tools. In addition, it provides production services comprising maintenance-related intervention services; production blow out preventers; mechanical wireline services; slick line services; hydro-testing services; premium tubulars; and other specialized production tools. Further, the company provides intervention services consisting of technicians and equipment that are focused on providing customers engineered solutions to downhole complications. KLX Energy Services Holdings, Inc. was incorporated in 2018 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.