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.

Genesis Energy, L.P. provides integrated suite of midstream services in crude oil and natural gas industry in the United States. It operates through Offshore Pipeline Transportation, Soda and Sulfur Services, Marine Transportation, and Onshore Facilities and Transportation segments. The Offshore Pipeline Transportation segment engages in offshore crude oil and natural gas pipeline transportation and handling operations, as well as deep water pipeline servicing. This segment also owns interests in offshore crude oil and natural gas pipeline systems, platforms, and related infrastructure. The Soda and Sulfur Services segment produces, markets, and sells soda ash; and provides sulfur removal services. This segment also owns and operates soda ash production facilities, underground trona ore mines and brine solution mining operations and related equipment, and logistics and other assets; and sells sodium hydrosulfide and caustic soda to industrial and commercial companies involved in the mining of base metals. The Marine Transportation segment offers waterborne transportation of petroleum and crude oil in North America. This segment owns a fleet of 91 barges and 42 push/tow boats. The Onshore Facilities and Transportation segment offers onshore facilities and transportation services to crude oil refineries and producers by purchasing, transporting, storing, blending, and marketing crude oil and refined products; and operates trucks, trailers, railcars, and terminals and tankage in various locations along the Gulf Coast. This segment also transports crude oil, as well as owns four onshore crude oil pipeline systems and four operational crude oil rail unloading facilities. The company was incorporated in 1996 and is headquartered in Houston, Texas.

Innovex International, Inc. designs, manufactures, installs, rents, and sells a suite of well-centric engineered products to oil and gas industries worldwide. It offers well construction products, including centralizers, float equipment, inflatable packers, stage tools and cementing, specialty deployment, swivel tools, reamers, and other related products, as well as deepwater solutions; and well completion products, such as liner hangers, toe sleeves, frac plugs, casing flotation subs, production and service tools, and inflatable service and completion packers. The company also provides well production and intervention products comprising wellhead penetrators, wellhead hangers and adapters, and well intervention tools, as well as spooling services. In addition, it offers wellhead systems; drilling and deployment products; connectors and gas lift systems; and external and internal catchers, junk catchers, milling and cutting tools, stroking tools, safety joints, wireline equipment, and remedial and repair tools. The company's products are used in onshore and offshore oil and natural gas well applications. The company was founded in 2016 and is headquartered in Humble, Texas.

Solaris Energy Infrastructure, Inc. designs and manufactures specialized equipment for oil and natural gas operators in the United States. The company provides technician support, last mile, and mobilization logistics services. It is also involved in the transloading and storage of proppant or railcars at its transloading facility. In addition, the company develops Railtronix, an inventory management software; and all-electric equipment that automates the low pressure section of oil and gas well completion sites. It serves exploration and production, and oilfield services industries. The company was formerly known as Solaris Oilfield Infrastructure, Inc. and changed its name to Solaris Energy Infrastructure, Inc. in September 2024. Solaris Energy Infrastructure, Inc. was founded in 2014 and is headquartered in Houston, Texas.

Select Water Solutions, Inc., together with its subsidiaries, provides water management and chemical solutions to the energy industry in the United States. The company operates through three segments: Water Services, Water Infrastructure, and Chemical Technologies. The Water Services segment provides water-related services, including water sourcing, water transfer, flowback and well testing, water containment, fluids hauling, water monitoring, and water network automation; technology solutions comprising hydrographic mapping, water volume and quality monitoring, remote pit and tank monitoring, leak detection, asset and fuel tracking, and automated-equipment services, as well as various surface rental equipment and workforce accommodation services. The Water Infrastructure segment engages in the recycling, gathering, transferring, and disposal of water through a network of permanent pipeline infrastructure, semi-permanent pipeline infrastructure, water recycling facilities, earthen pits, water sources, and SWDs; provides solids management services; and develops, builds, and operates semi-permanent and permanent infrastructure solutions. The Chemical Technologies segment provides technical solutions, products, and services related to chemical applications in the oil and gas industry. This segment develops, manufactures, and manages logistics; and provides chemicals used in hydraulic fracturing, stimulation, cementing, and well completions for pressure pumpers and oil and gas producers, as well as offers production chemical solutions for underperforming wells, corrosion and scale monitoring, chemical inventory management, well failure analysis, and lab services. It primarily serves oil and gas producers. The company was formerly known as Select Energy Services, Inc. and changed its name to Select Water Solutions, Inc. in May 2023. Select Water Solutions, Inc. was incorporated in 2016 and is headquartered in Houston, Texas.

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.

Smart Sand, Inc., an integrated frac and industrial sand supply and services company, engages in the excavation, processing, and sale of sands or proppant for use in hydraulic fracturing operations in the oil and gas industry in the United States. It also provides proppant logistics services; and wellsite storage solutions through SmartSystems products and services. The company sells its products primarily to oil and natural gas exploration and production companies, oilfield service companies, and industrial manufacturers. Smart Sand, Inc. was incorporated in 2011 and is headquartered in Spring, Texas.

Adams Resources & Energy, Inc., through its subsidiaries, primarily engages in the marketing, transportation, terminalling, and storage of crude oil and other related products in the United States. The company operates through four segments: Crude Oil Marketing, Transportation, Pipeline and Storage, and Logistics and Repurposing. It purchases and sells crude oil to refiners and other customers primarily onshore in Texas, North Dakota, Michigan, Wyoming, Colorado, and Louisiana; owns and operates a fleet of 164 tractor-trailer rigs; and maintains pipeline inventory locations and injection stations. The company also transports liquid chemicals, pressurized gases, asphalt, and dry bulk on a hire basis in the United States, Canada, and Mexico; and operates truck terminals in Houston, Corpus Christi, Nederland, Freeport, Baton Rouge, St. Rose, Sterlington, Jacksonville, Tampa, Augusta, Mobile, Charlotte, Cincinnati, South Charleston, Memphis, East St. Louis, and Joliet. In addition, it operates crude oil and condensate pipeline system, which connects the Eagle Ford Basin to the Gulf Coast waterborne market; and transports crude oil, condensate, fuels, oils, and other petroleum products on a for hire basis in the Eagle Ford basin. The company was founded in 1947 and is headquartered in Houston, Texas.