Devon Energy Corporation, an independent energy company, primarily engages in the exploration, development, and production of oil, natural gas, and natural gas liquids in the United States. It operates approximately 3,942 gross wells. Devon Energy Corporation was founded in 1971 and is headquartered in Oklahoma City, Oklahoma.

PBF Energy Inc., together with its subsidiaries, engages in refining and supplying petroleum products. The company operates in two segments, Refining and Logistics. It produces gasoline, ultra-low-sulfur diesel, heating oil, diesel fuel, jet fuel, lubricants, petrochemicals, and asphalt, as well as unbranded transportation fuels, petrochemical feedstocks, blending components, and other petroleum products. The company sells its products in Northeast, Midwest, Gulf Coast, and West Coast of the United States, as well as in other regions of the United States, Canada, and Mexico. It also offers various rail, truck, and marine terminaling services, as well as pipeline transportation and storage services. The company owns and operates six oil refineries and related assets. PBF Energy Inc. was founded in 2008 and is based in Parsippany, New Jersey.

Centennial Resource Development, Inc., an independent oil and natural gas company, focuses on the development of unconventional oil and associated liquids-rich natural gas reserves in the United States. The company's assets primarily focus on the Delaware Basin, a sub-basin of the Permian Basin. Its properties consist of acreage blocks primarily in Reeves County in West Texas and Lea County in New Mexico. As of December 31, 2020, it leased or acquired approximately 81,657 net acres; and owned 1,472 net mineral acres in the Delaware Basin. The company was formerly known as Silver Run Acquisition Corporation and changed its name to Centennial Resource Development, Inc. in October 2016. Centennial Resource Development, Inc. was incorporated in 2015 and is headquartered in Denver, Colorado.

Secure Energy Services Inc., an energy services company, provides specialized solutions to upstream oil and natural gas companies operating primarily in Western Canadian Sedimentary Basin and the United States. The company's Midstream Infrastructure segment provides services, such as clean oil terminalling, rail transloading, pipeline transportation, marketing and custom treating of crude oil, produced and waste water disposal, oilfield waste processing, and purchase/resale of oil services through its full service terminals, rail facilities, crude oil pipelines, crude oil terminalling facilities, water disposal facilities, and landfills. Its Environmental and Fluid Management segment offers pipeline integrity projects; demolition, decommissioning, reclamation, and remediation of former well sites, facilities, and commercial and industrial properties; environmental construction projects; onsite integrated fluid solutions for water management, recycling, pumping, and storage; naturally occurring radioactive material management; waste container services; and emergency response services. This segment also provides drilling, completion, and production operations for oil and gas producers; and design and implementation of drilling fluid systems for producers drilling for oil, bitumen, and natural gas, as well as equipment and chemical solutions that optimize well production. Secure Energy Services Inc. is headquartered in Calgary, Canada.

Kosmos Energy Ltd., a deepwater independent oil and gas exploration and production company, focuses along the Atlantic Margins. The company's primary assets include production offshore Ghana, Equatorial Guinea, and the U.S. Gulf of Mexico, as well as a gas development offshore Mauritania and Senegal. It also maintains a proven basin exploration program. The company was founded in 2003 and is headquartered in Dallas, Texas.

Halliburton Company provides a range of services and products to oil and natural gas companies worldwide. The company's Completion and Production segment offers production enhancement services, including stimulation and sand control services; and cementing services, such as well bonding and casing, as well as provides casing equipment. It also provides completion tools that offer downhole solutions and services, including well completion products and services, intelligent well completions, liner hanger and sand control systems, and service tools; production solutions comprising coiled tubing, hydraulic workover units, downhole tools, pumping services, and nitrogen services; and pipeline and process services, such as pre-commissioning, commissioning, maintenance, and decommissioning. In addition, this segment offers electrical submersible pumps, as well as artificial lift services. The company's Drilling and Evaluation segment provides drilling fluid systems, performance additives, completion fluids, solids control, specialized testing equipment, and waste management services; oilfield completion, production, and downstream water and process treatment chemicals and services; and drilling systems and services. It also offers wireline and perforating services, including open-hole logging, and cased-hole and slickline; and drill bits and services comprising roller cone rock bits, fixed cutter bits, hole enlargement, and related downhole tools and services, as well as coring equipment and services. In addition, this segment provides cloud based digital services and artificial intelligence solutions on an open architecture for subsurface insights, integrated well construction, and reservoir and production management; testing and subsea services, such as acquisition and analysis of reservoir information and optimization solutions; and project management and integrated asset management services. Halliburton Company was founded in 1919 and is based in Houston, Texas.

Tamarack Valley Energy Ltd. acquires, explores, develops, and produces crude oil, natural gas, and natural gas liquids in the Western Canadian sedimentary basin. It primarily holds interests in Alberta Cardium light oil plays in Wilson Creek/Alder Flats/Pembina, and Garrington and Lochend areas in Alberta; Viking light oil resource plays in Redwater in Alberta, as well as in the Veteran, Consort, and Esther area of southeast Alberta and North Hoosier, Milton, and Coleville area of southwest Saskatchewan; Barons and Banff light oil plays located in the Penny area of Southern Alberta; and heavy oil properties. The company was formerly known as Tango Energy Inc. and changed its name to Tamarack Valley Energy Ltd. in June 2010. Tamarack Valley Energy Ltd. is headquartered in Calgary, Canada.

Diamondback Energy, Inc., an independent oil and natural gas company, focuses on the acquisition, development, exploration, and exploitation of unconventional and onshore oil and natural gas reserves in the Permian Basin in West Texas. It primarily focuses on the development of the Spraberry and Wolfcamp formations of the Midland basin; and the Wolfcamp and Bone Spring formations of the Delaware basin, which are part of the Permian Basin in West Texas and New Mexico. As of December 31, 2020, the company's total acreage position was approximately 449,642 gross acres in the Permian Basin; and estimated proved oil and natural gas reserves were 1,316,441 thousand barrels of crude oil equivalent. It also held working interests in 4,326 gross producing wells, as well as royalty interests in 4,553 additional wells. In addition, the company owns mineral interests approximately 787,264 gross acres and 24,350 net royalty acres in the Permian Basin and Eagle Ford Shale; and owns, operates, develops, and acquires midstream infrastructure assets, including 927 miles of crude oil gathering pipelines, natural gas gathering pipelines, and an integrated water system in the Midland and Delaware Basins of the Permian Basin. Diamondback Energy, Inc. was founded in 2007 and is headquartered in Midland, Texas.

Baker Hughes Company provides a portfolio of technologies and services worldwide. The company operates through four segments: Oilfield Services (OFS), Oilfield Equipment (OFE), Turbomachinery & Process Solutions (TPS), and Digital Solutions (DS). The OFS segment offers exploration, drilling, wireline, evaluation, completion, production, and intervention services; and drilling and completions fluids, completions tools and systems, wellbore intervention tools and services, artificial lift systems, pressure pumping systems, and oilfield and industrial chemicals for oil and natural gas, and oilfield service companies. The OFE segment provides subsea and surface pressure control and production systems and services, capital drilling equipment and services, and flexible pipe systems for offshore and onshore applications; and provides well intervention solutions, as well as services related to onshore and offshore drilling and production operations. The TPS segment provides equipment and related services for mechanical-drive, compression, and power-generation applications across the oil and gas industry. Its product portfolio includes drivers, compressors, and turnkey solutions; and pumps, valves, and compressed natural gas and small-scale liquefied natural gas solutions. This segment serves upstream, midstream, onshore and offshore, and industrial, as well as engineering, procurement, and construction companies. The DS segment provides sensor-based measurement, non-destructive testing and inspection, turbine, generator and plant controls, and condition monitoring for oil and gas, power generation, aerospace, metals, and transportation industries. Baker Hughes Company has a strategic collaboration with Air Products and Chemicals, Inc. to develop hydrogen compression systems. The company was formerly known as Baker Hughes, a GE company and changed its name to Baker Hughes Company in October 2019. Baker Hughes Company is based in Houston, Texas.

Comstock Resources, Inc., an independent energy company, engages in the acquisition, exploration, development, and production of oil and natural gas primarily in North Louisiana and East Texas, the United States. As of December 31, 2021, the company had 6.1 trillion cubic feet of the natural gas equivalent of proved reserves. It also owns interests in 2,557 producing oil and natural gas wells. The company was incorporated in 1919 and is headquartered in Frisco, Texas.

Indraprastha Gas Limited engages in the distribution of natural gas in India. The company supplies compressed natural gas (CNG) to the transport sector; and piped natural gas to domestic, industrial, and commercial sectors in Delhi, Greater Noida, Ghaziabad, Hapur, Meerut, Shamli, Kanpur, Fatehpur, Hamirpur, Muzaffarnagar, Gurugram, Rewari, Karnal, Kaithal, Ajmer, Pali, and Rajsamand. As of March 31, 2021, it operated 612 CNG stations; and serves 16.85 Lakh households, and 6,687 commercial and industrial consumers. The company also operates 1,265 kilometers of steel pipeline network; and 15,262 kilometers MDPE network. Indraprastha Gas Limited was incorporated in 1998 and is headquartered in New Delhi, India.

Coterra Energy Inc., an independent oil and gas company, explores for, exploits, develops, produces, and markets oil and gas properties in the United States. It primarily focuses on the Marcellus Shale with approximately 175,000 net acres in the dry gas window of the play located in Susquehanna County, Pennsylvania. The company sells its natural gas to industrial customers, local distribution companies, gas marketers, and power generation facilities through gathering systems and pipelines. As of December 31, 2020, it had proved reserves of approximately 13,672 billion cubic feet of gas; and 15 thousand barrels of oil or other liquid hydrocarbons. Coterra Energy Inc. was incorporated in 1989 and is headquartered in Houston, Texas.

Japan Petroleum Exploration Co., Ltd., together with its subsidiaries, explores, develops, produces, and sells oil, natural gas, and other energy resources in Japan, Canada, Russia, Iraq, and internationally. The company operates 10 domestic oil and natural gas fields in onshore and offshore of Hokkaido, Akita, Yamagata, and Niigata prefectures. It also owns and manages a natural gas pipeline network with a total length of approximately 800 kilometers. In addition, the company is involved in well drilling and engineering contracting services; manufacturing and selling oil products; real estate management and insurance agency activities; sale and contracted transportation of crude oil; recycling of waste oil; and pipeline management and maintenance operations. Further, it engages in the geophysical exploration work contracting and geophysical exploration technology development; geophysical logging and mud logging work contract; exploration, development, and production of tight oil, oil sands, and shale gas; purchase and sale of LNG, petroleum products, etc.; provision of industrial disaster prevention and security services; manufacture and sale of drilling mud preparations and mud services; and operation and commissioning of natural power plants. The company was founded in 1955 and is headquartered in Tokyo, Japan.

Ranger Oil Corporation, an independent oil and gas company, engages in the onshore exploration, development, and production of crude oil, natural gas liquids, and natural gas in the United States. It primarily operates wells in the Eagle Ford Shale field in South Texas. As of December 31, 2020, it had total proved reserves of approximately 126 million barrels of oil equivalent; and 532 gross productive wells, as well as owned approximately 98,300 gross acres of leasehold and royalty interests. The company was formerly known as Penn Virginia Corporation and changed its name to Ranger Oil Corporation in October 2021. Ranger Oil Corporation was incorporated in 1882 and is headquartered in Houston, Texas.

Arch Resources, Inc. produces and sells thermal and metallurgical coal from surface and underground mines. As of December 31, 2020, the company operated seven active mines. It also owned or controlled primarily through long-term leases approximately 28,292 acres of coal land in Ohio; 1,060 acres of coal land in Maryland; 10,095 acres of coal land in Virginia; 306,253 acres of coal land in West Virginia; 81,470 acres of coal land in Wyoming; 234,437 acres of coal land in Illinois; 33,047 acres of coal land in Kentucky; 403 acres of coal land in Montana; 358 acres of coal land in Pennsylvania; and 19,146 acres of coal land in Colorado, as well as smaller parcels of property in Alabama, Indiana, Washington, Arkansas, California, Utah, and Texas. The company sells its products to utility, industrial, and steel producers in the United States, Europe, Asia, Central and South America, and Africa. The company was formerly known as Arch Coal, Inc. and changed its name to Arch Resources, Inc. in May 2020. Arch Resources, Inc. was founded in 1969 and is headquartered in St. Louis, Missouri.