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.

Expand Energy Corporation operates as an independent exploration and production company in the United States. It engages in acquisition, exploration, and development of properties to produce oil, natural gas, and natural gas liquids from underground reservoirs. The company holds interests in natural gas resource plays in the Marcellus Shale in the northern Appalachian Basin in Pennsylvania and the Haynesville/Bossier Shales in northwestern Louisiana. As of December 31, 2023, the company owns a portfolio of onshore U.S. unconventional natural gas assets, including interests in approximately 5,000 natural gas wells. The company was formerly known as Chesapeake Energy Corporation and changed its name to Expand Energy Corporation in October 2024. Expand Energy Corporation was founded in 1989 and is based in Oklahoma City, Oklahoma.

Antero Resources Corporation, an independent oil and natural gas company, engages in the development, production, exploration, and acquisition of natural gas, natural gas liquids (NGLs), and oil properties in the United States. It operates in three segments: Exploration and Development; Marketing; and Equity Method Investment in Antero Midstream. As of December 31, 2023, the company had approximately 515,000 net acres in the Appalachian Basin; and approximately 172,000 net acres in the Upper Devonian Shale. Its gathering and compression systems also comprise 631 miles of gas gathering pipelines in the Appalachian Basin. The company was formerly known as Antero Resources Appalachian Corporation and changed its name to Antero Resources Corporation in June 2013. Antero Resources Corporation was incorporated in 2002 and is headquartered in Denver, Colorado.

Ovintiv Inc., together with its subsidiaries, explores, develops, produces, and markets natural gas, oil, and natural gas liquids in the United States and Canada. The company operates through USA Operations, Canadian Operations, and Market Optimization segments. Its principal assets include Permian in west Texas and Anadarko in west-central Oklahoma; and Montney in northeast British Columbia and northwest Alberta. In addition, the company's upstream assets comprise Bakken in northwest North Dakota, and Uinta in central Utah; and Horn River in northeast British Columbia. The company was formerly known as Encana Corporation and changed its name to Ovintiv Inc. in January 2020. Ovintiv Inc. was incorporated in 2020 and is based in Denver, Colorado.

Mammoth Energy Services, Inc. operates as an energy services company in the United States, Canada, and internationally. The company operates in four segments: Well Completion Services, Infrastructure Services, Natural Sand Proppant Services, and Drilling Services. The company offers pressure pumping and hydraulic fracturing, sand hauling, and water transfer services; and master services agreements. It also provides a range of services on electric transmission and distribution, and networks and substation facilities, including engineering, design, construction, upgrade, maintenance, and repair of high voltage transmission lines, substations, and lower voltage overhead and underground distribution systems; storm repair and restoration services; and commercial services comprising installation, maintenance, and repair of commercial wiring. In addition, the company mines, processes, and sells natural sand proppant used for hydraulic fracturing; buys processed sand from suppliers on the spot market for resale; and provides logistics solutions to facilitate delivery of frac sand products. Further, it offers contract land and directional drilling services; and rig moving services. Additionally, the company offers aviation services, equipment rental, remote accommodation, and equipment manufacturing services. It serves government-funded, private, public investor-owned, and co-operative utilities; independent oil and natural gas producers; and land-based drilling contractors. The company was formerly known as Mammoth Energy Partners LP and changed its name to Mammoth Energy Services, Inc. in October 2016. Mammoth Energy Services, Inc. was founded in 2014 and is headquartered in Oklahoma City, Oklahoma.

Nine Energy Service, Inc. operates as an onshore completion services provider that targets unconventional oil and gas resource development in North American basins and internationally. It offers cementing services, including blending high-grade cement and water with various solid and liquid additives to create a cement slurry that is pumped between the casing and the wellbore of the well. The company also provides open hole and cemented completion tool products, such as liner hangers and accessories, fracture isolation packers, frac sleeves, stage one prep tools, casing flotation tools, specialty open hole float equipment, disk subs, composite cement retainers, and centralizers that provide pinpoint frac sleeve system technologies. In addition, it offers wireline services consisting of plug-and-perf completions, which is a multistage well completion technique for cased-hole wells that consists of deploying perforating guns and isolation tools to a specified depth; and coiled tubing services, which perform wellbore intervention operations utilizing a continuous steel pipe that is transported to the wellsite wound on a large spool. The company was formerly known as NSC-Tripoint, Inc. and changed its name to Nine Energy Service, Inc. in October 2011. Nine Energy Service, Inc. was incorporated in 2011 and is headquartered in Houston, Texas.

Enservco Corporation, through its subsidiaries, provides hot oiling and acidizing, and frac water heating services to the onshore oil and natural gas industry. It also water hauling and well site construction services. The company owns and operates specialized trucks, trailers, frac tanks, and other well-site related equipment. It operates in the DJ Basin/Niobrara area in Colorado and Wyoming; the San Juan Basin in northwestern New Mexico; the Marcellus and Utica Shale areas in Pennsylvania and Ohio; the Jonah area, Green River and Powder River Basins in Wyoming; and the Eagle Ford Shale and East Texas Oilfield in Texas. The company was incorporated in 1980 and is headquartered in Longmont, Colorado.

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.