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.

Western Midstream Partners, LP, together with its subsidiaries, operates as a midstream energy company primarily in the United States. It is involved in gathering, compressing, treating, processing, and transporting natural gas; gathering, stabilizing, and transporting condensate, natural gas liquids (NGLs), and crude oil; and gathering and disposing produced water. The company also buys and sells natural gas, NGLs, and condensate. It operates assets located in Texas, New Mexico, the Rocky Mountains, and North-central Pennsylvania. Western Midstream Holdings, LLC operates as the general partner of the company. The company was formerly known as Western Gas Equity Partners, LP and changed its name to Western Midstream Partners, LP in February 2019. Western Midstream Partners, LP was incorporated in 2007 and is based in The Woodlands, 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.

Kodiak Gas Services, Inc. operates contract compression infrastructure for customers in the oil and gas industry in the United States. It operates in two segments, Compression Operations and Other Services. The Compression Operations segment operates company-owned and customer-owned compression infrastructure to enable the production, gathering, and transportation of natural gas and oil. The Other Services segment provides a range of contract services, including station construction, maintenance and overhaul, and other ancillary time and material-based offerings. The company was formerly known as Frontier TopCo, Inc. Kodiak Gas Services, Inc. was founded in 2010 and is headquartered in The Woodlands, 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.

Enerflex Ltd. offers energy infrastructure and energy transition solutions to natural gas markets in North America, Latin America, and the Eastern Hemisphere. The company provides natural gas compression infrastructure, processing, and treated water infrastructure under contract to oil and natural gas customers; power generation rental solutions; custom and standard compression packages for reciprocating and screw compressor applications; re-engineering, re-configuration, and re-packaging of compressors for various field applications; integrated turnkey power generation, gas compression, processing facilities, natural gas compression, processing, and electric power solutions; after-market mechanical services and parts distribution, as well as maintenance solutions to the oil and natural gas industry, operations, and overhaul services; and equipment supply, parts supply, and general asset management. It also designs, engineers, manufactures, constructs, and installs modular natural gas processing equipment, low-carbon solutions, cryogenic systems, electric power solutions, and treated water solutions; and engages in the engineering, design, procurement, project management, and construction services for compression, process, treated water, and power generation equipment, as well as after-market service, parts, and operations and maintenance services for gas compression, processing, and treated water facilities in the region. The company was formerly known as Enerflex Systems Income Fund and changed its name to Enerflex Ltd. in January 2010. Enerflex Ltd. was founded in 1980 and is headquartered in Calgary, Canada.

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.

NCS Multistage Holdings, Inc. provides engineered products and support services for oil and natural gas well completions and construction, and field development strategies in the United States, Canada, and internationally. It offers fracturing systems, which include casing-installed sliding sleeves, downhole frac isolation assemblies, and sand jet perforating products; enhanced recovery products, such as sliding sleeve, as well as Terrus system, an injection control device; repeat precision products comprising composite frac plugs and bridge plugs, single-use disposable setting tools, express systems, and related products; chemical and radioactive tracer diagnostics services; and well construction products, including AirLock casing buoyancy system, Vecturon and Vectraset liner hanger systems, and Toe initiation sleeves. It offers its products and services primarily to exploration and production companies for use in onshore wells through technically-trained sales force, and operating partners or sales representatives. The company was formerly known as Pioneer Super Holdings, Inc. and changed its name to NCS Multistage Holdings, Inc. in December 2016. NCS Multistage Holdings, Inc. was founded in 2006 and is headquartered in Houston, Texas.