Kinder Morgan, Inc. operates as an energy infrastructure company primarily in North America. The company operates through Natural Gas Pipelines, Products Pipelines, Terminals, and CO2 segments. The Natural Gas Pipelines segment owns and operates interstate and intrastate natural gas pipeline, and storage systems; natural gas gathering systems and natural gas processing and treating facilities; natural gas liquids fractionation facilities and transportation systems; and liquefied natural gas gasification, liquefaction, and storage facilities. The Products Pipelines segment owns and operates refined petroleum products, and crude oil and condensate pipelines; and associated product terminals and petroleum pipeline transmix facilities. The Terminals segment owns and/or operates liquids and bulk terminals that stores and handles various commodities, including gasoline, diesel fuel, renewable fuel and feedstocks, chemicals, ethanol, metals, and petroleum coke; and owns tankers. The CO2 segment produces, transports, and markets CO2 to recovery and production crude oil from mature oil fields; owns interests in/or operates oil fields and gasoline processing plants; and operates a crude oil pipeline system in West Texas, as well as owns and operates RNG and LNG facilities. It owns and operates approximately 82,000 miles of pipelines and 139 terminals. The company was formerly known as Kinder Morgan Holdco LLC and changed its name to Kinder Morgan, Inc. in February 2011. Kinder Morgan, Inc. was founded in 1997 and is headquartered in Houston, Texas.

Energy Transfer LP provides energy-related services. The company owns and operates natural gas transportation pipeline, and natural gas storage facilities in Texas and Oklahoma; and approximately 20,090 miles of interstate natural gas pipeline. It also sells natural gas to electric utilities, independent power plants, local distribution and other marketing companies, and industrial end-users. In addition, the company owns and operates natural gas gathering pipelines, processing plant, and treating and conditioning facilities in Texas, New Mexico, West Virginia, Pennsylvania, Ohio, Oklahoma, Arkansas, Kansas, Montana, North Dakota, Wyoming, and Louisiana; natural gas gathering, oil pipeline, and oil stabilization facilities in South Texas; and transports and supplies water to natural gas producer in Pennsylvania. Further, it owns 5,700 miles of natural gas liquid (NGL) pipeline; NGL fractionation facilities; NGL storage facilities; and other NGL storage assets and terminal. Additionally, the company provides crude oil transportation, terminalling, acquisition, and marketing activities; owns and operates approximately 14,500 miles of crude oil trunk and gathering pipelines in the Southwest, Midcontinent, and Midwest United States; and sells and distributes gasoline, middle distillate, and motor fuels and other petroleum products. It also offers natural gas compression services; carbon dioxide and hydrogen sulfide removal services; and manages coal and natural resources properties, as well as sells standing timber, leases coal-related infrastructure facilities, collects oil and gas royalty, and generate electrical power. The company was formerly known as Energy Transfer Equity, L.P. and changed its name to Energy Transfer LP in October 2018. Energy Transfer LP was founded in 1996 and is headquartered in Dallas, Texas.

Archrock, Inc., together with its subsidiaries, operates as an energy infrastructure company in the United States. The company operates in two segments, Contract Operations and Aftermarket Services. It engages in the designing, sourcing, owning, installing, operating, servicing, repairing, and maintaining of its owned fleet of natural gas compression equipment to provide natural gas compression services. The company also sells over-the-counter parts and components; and provides operations, major and routine maintenance, overhaul, and reconfiguration services to customers who own compression equipment. It serves integrated and independent oil and natural gas processors, gatherers, and transporters. The company was formerly known as Exterran Holdings, Inc. and changed its name to Archrock, Inc. in November 2015. Archrock, Inc. was founded in 1990 and is headquartered in Houston, Texas.

USA Compression Partners, LP provides natural gas compression services in the United States. It offers compression services to oil companies and independent producers, processors, gatherers, and transporters of natural gas and crude oil. The company focuses on providing natural gas compression services to infrastructure applications, including centralized natural gas gathering systems and processing facilities, as well as gas lift applications for crude oil wells. As of December 31, 2023, it had 3,775,660 horsepower in its fleet. USA Compression Partners, LP was founded in 1998 and is headquartered in Austin, Texas.

Kinetik Holdings Inc. operates as a midstream company in the Texas Delaware Basin. The company operates through two segments, Midstream Logistics and Pipeline Transportation. It provides gathering, transportation, compression, processing, stabilization, treating, storage, and transportation services for companies that produce natural gas, natural gas liquids, and crude oil; and water gathering and disposal services. The company was founded in 2017 and is based in Houston, Texas.

Natural Gas Services Group, Inc. provides natural gas compression equipment and services to the energy industry in the United States. It engineers and fabricates, operates, rents, and maintains natural gas compressors for oil and natural gas production and plant facilities. It also designs, fabricates, and assembles compressor units for rental or sale; and designs, manufactures, and sells a line of reciprocating natural gas compressor frames, cylinders, and parts. In addition, the company offers flare stacks and related ignition and control devices for the onshore and offshore incineration of gas compounds, such as hydrogen sulfide, carbon dioxide, natural gas, and liquefied petroleum gases. Further, it provides aftermarket services for its compressor and flare sales business; and exchange and rebuild program for small horsepower screw compressors. It markets its products to exploration and production companies that utilize compressor units for artificial lift applications; and oil and natural gas exploration and production companies. Natural Gas Services Group, Inc. was incorporated in 1998 and is headquartered in Midland, 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.

CSI Compressco LP provides contract services for natural gas compression and treating in the United States, Latin America, Canada, Egypt, and internationally. The company offers natural gas compression services through low-, medium-, and high-horsepower compressor packages for oil and natural gas production, gathering, artificial lift, transmission, processing, and storage. It also provides treating services for natural gas producers and midstream companies, including providing equipment for lease or sale, equipment installation services, and the operation of equipment for removal of contaminants from a natural gas stream, and natural gas cooling to reduce the temperature of produced gas and liquids; well monitoring and sand separation services; and operation, maintenance, overhaul, and reconfiguration services for compression equipment. In addition, the company sells engine parts, compressor package parts, and other parts manufactured by third-party suppliers. The company was formerly known as Compressco Partners, L.P. and changed its name to CSI Compressco LP in December 2014. CSI Compressco LP was incorporated in 2008 and is headquartered in The Woodlands, Texas.