The Williams Companies, Inc., together with its subsidiaries, operates as an energy infrastructure company primarily in the United States. It operates through Transmission & Gulf of Mexico, Northeast G&P, West, and Gas & NGL Marketing Services segments. The Transmission & Gulf of Mexico segment comprises natural gas pipelines; Transco, Northwest pipeline, MountainWest, and related natural gas storage facilities; and natural gas gathering and processing, and crude oil production handling and transportation assets in the Gulf Coast region. The Northeast G&P segment engages in the midstream gathering, processing, and fractionation activities in the Marcellus Shale region primarily in Pennsylvania and New York, and the Utica Shale region of eastern Ohio. The West segment consists of gas gathering, processing, and treating operations in the Rocky Mountain region of Colorado and Wyoming, the Barnett Shale region of north-central Texas, the Eagle Ford Shale region of South Texas, the Haynesville Shale region of northwest Louisiana, the Mid-Continent region that includes the Anadarko and Permian basins, and the DJ Basin of Colorado; and operates natural gas liquid (NGL) fractionation and storage facilities in central Kansas near Conway. The Gas & NGL Marketing Services segment provides wholesale marketing, trading, storage, and transportation of natural gas for natural gas utilities, municipalities, power generators, and producers; asset management services; and transports and markets NGLs. The company owns and operates 33,000 miles of pipelines. The Williams Companies, Inc. was founded in 1908 and is headquartered in Tulsa, Oklahoma.

EOG Resources, Inc., together with its subsidiaries, explores for, develops, produces, and markets crude oil, natural gas liquids, and natural gas primarily in producing basins in the United States, the Republic of Trinidad and Tobago and internationally. The company was formerly known as Enron Oil & Gas Company. EOG Resources, Inc. was incorporated in 1985 and is headquartered in Houston, Texas.

Hess Corporation, an exploration and production company, explores, develops, produces, purchases, transports, and sells crude oil, natural gas liquids (NGLs), and natural gas. The company operates in two segments, Exploration and Production, and Midstream. It conducts production operations primarily in the United States, Guyana, the Malaysia/Thailand Joint Development Area, and Malaysia; and exploration activities principally offshore Guyana, the U.S. Gulf of Mexico, and offshore Suriname and Canada. The company is also involved in gathering, compressing, and processing natural gas; fractionating NGLs; gathering, terminaling, loading, and transporting crude oil and NGL through rail car; and storing and terminaling propane, as well as providing water handling services primarily in the Bakken Shale plays in the Williston Basin area of North Dakota. The company was incorporated in 1920 and is headquartered in New York, New York.

Coterra Energy Inc., an independent oil and gas company, engages in the development, exploration, and production of oil, natural gas, and natural gas liquids in the United States. The company's properties include the Marcellus Shale with approximately 186,000 net acres in the dry gas window of the play located in Susquehanna County, Pennsylvania; Permian Basin properties with approximately 296,000 net acres located in west Texas and southeast New Mexico; and Anadarko Basin properties with approximately 182,000 net acres located in Oklahoma. It also operates natural gas and saltwater gathering and disposal systems in Texas. The company sells its natural gas to industrial customers, local distribution companies, oil and gas marketers, major energy companies, pipeline companies, and power generation facilities. Coterra Energy Inc. was incorporated in 1989 and is headquartered in Houston, Texas.

EnLink Midstream, LLC provides midstream energy services in the United States. The company operates through Permian, Louisiana, Oklahoma, North Texas, and Corporate segments. It is involved in gathering, compressing, treating, processing, transporting, storing, and selling natural gas; fractionating, transporting, storing, and selling natural gas liquids; and gathering, transporting, stabilizing, storing, trans-loading, and selling crude oil and condensate, as well as providing brine disposal services. In addition, the company's midstream energy asset network includes natural gas processing plants; fractionators; barge and rail terminals; product storage facilities; and brine disposal wells. EnLink Midstream, LLC was incorporated in 2013 and is based in Dallas, Texas.

Liberty Energy Inc. provides hydraulic services and related technologies to onshore oil and natural gas exploration, and production companies in North America. The company offers hydraulic fracturing services, including complementary services, such as wireline services, proppant delivery solutions, field gas processing and treating, compressed natural gas (CNG) delivery, data analytics, related goods comprising sand mine operations, and technologies; and well site fueling and logistics. As of as of December 31, 2023, the company owned and operated a fleet of approximately 40 active hydraulic fracturing; and two sand mines in the Permian Basin. In addition, the company provides services primarily in the Permian Basin, the Williston Basin, the Eagle Ford Shale, the Haynesville Shale, the Appalachian Basin (Marcellus Shale and Utica Shale), the Western Canadian Sedimentary Basin, the Denver-Julesburg Basin (the DJ Basin), and the Anadarko Basin. Liberty Energy Inc. was formerly known as Liberty Oilfield Services Inc. and changed its name to Liberty Energy Inc. in April 2022. The company was founded in 2011 and is headquartered in Denver, Colorado.

RPC, Inc., through its subsidiaries, engages provision of a range of oilfield services and equipment for the oil and gas companies involved in the exploration, production, and development of oil and gas properties. The company operates through Technical Services and Support Services segments. The Technical Services segment offers pressure pumping, fracturing, acidizing, cementing, downhole tools, coiled tubing, snubbing, nitrogen, well control, wireline, pump down, and fishing services that are used in the completion, production, and maintenance of oil and gas wells. The Support Services segment provides a range of rental tools for onshore and offshore oil and gas well drilling, completion, and workover activities. This segment also offers oilfield pipe inspection, and pipe management and storage services, as well as well control training and consulting services. It operates in the United States, Africa, Canada, Argentina, China, Mexico, Latin America, the Middle East, and internationally. The company was incorporated in 1984 and is headquartered in Atlanta, Georgia.

Energy Services of America Corporation, together with its subsidiaries, provides contracting services for utilities and energy related companies in the United States. The company constructs, replaces, and repairs interstate and intrastate natural gas pipelines and storage facilities for utility companies and private natural gas companies; and provides services relating to pipeline, storage facilities, and plant works. It also offers electrical and mechanical installation, and repair services, including substation and switchyard, site preparation, equipment setting, pipe fabrication and installation, packaged buildings, transformers, and other ancillary works for the gas, petroleum power, chemical, water and sewer, and automotive industries. In addition, the company provides corrosion protection services, horizontal drilling services, liquid pipeline and pump station construction, production facility construction, water and sewer pipeline installation, and various maintenance and repair services, as well as other services related to pipeline construction. Further, it serves customers primarily in West Virginia, Virginia, Ohio, Pennsylvania, and Kentucky. Energy Services of America Corporation was incorporated in 2006 and is based in Huntington, West Virginia.