Exxon Mobil Corporation engages in the exploration and production of crude oil and natural gas in the United States and internationally. It operates through Upstream, Energy Products, Chemical Products, and Specialty Products segments. The Upstream segment explores for and produces crude oil and natural gas. The Energy Products segment offers fuels, aromatics, and catalysts, as well as licensing services. It sells its products under the Exxon, Esso, and Mobil brands. The Chemical Products segment manufactures and markets petrochemicals including olefins, polyolefins, and intermediates. The Specialty Products segment offers performance products, including lubricants, basestocks, waxes, synthetics, elastomers, and resins. The company also involves in the manufacturing, trade, transport, and sale of crude oil, natural gas, petroleum products, petrochemicals, and other specialty products; and pursuit lower-emission business opportunities, including carbon capture and storage, hydrogen, lower-emission fuels, and lithium. Exxon Mobil Corporation was founded in 1870 and is based in Spring, Texas.

Chevron Corporation, through its subsidiaries, engages in the integrated energy and chemicals operations in the United States and internationally. The company operates in two segments, Upstream and Downstream. The Upstream segment is involved in the exploration, development, production, and transportation of crude oil and natural gas; processing, liquefaction, transportation, and regasification of liquefied natural gas; transportation of crude oil through pipelines; transportation, storage, and marketing of natural gas; and carbon capture and storage, as well as a gas-to-liquids plant. The Downstream segment refines crude oil into petroleum products; markets crude oil, refined products, and lubricants; manufactures and markets renewable fuels, commodity petrochemicals, plastics for industrial uses, and fuel and lubricant additives; and transports crude oil and refined products by pipeline, marine vessel, motor equipment, and rail car. The company was formerly known as ChevronTexaco Corporation and changed its name to Chevron Corporation in 2005. Chevron Corporation was founded in 1879 and is headquartered in San Ramon, California.

Shell plc operates as an energy and petrochemical company Europe, Asia, Oceania, Africa, the United States, and Rest of the Americas. The company operates through Integrated Gas, Upstream, Marketing, Chemicals and Products, and Renewables and Energy Solutions segments. It explores for and extracts crude oil, natural gas, and natural gas liquids; markets and transports oil and gas; produces gas-to-liquids fuels and other products; and operates upstream and midstream infrastructure to deliver gas to market. The company also markets and trades natural gas, liquefied natural gas (LNG), crude oil, electricity, carbon-emission rights; and markets and sells LNG as a fuel for heavy-duty vehicles. In addition, it trades in and refines crude oil and other feed stocks, such as low-carbon fuels, lubricants, bitumen, sulphur, gasoline, diesel, aviation fuel, and marine fuel; produces and sells petrochemicals for industrial use; and manages oil sands activities. Further, the company produces base chemicals comprising ethylene, propylene, and aromatics, as well as intermediate chemicals, such as styrene monomer, propylene oxide, solvents, detergent alcohols, ethylene oxide, and ethylene glycol. Additionally, it generates electricity through wind and solar resources; produces and sells hydrogen; and provides electric vehicle charging services. The company was formerly known as Royal Dutch Shell plc and changed its name to Shell plc in January 2022. Shell plc was founded in 1907 and is headquartered in London, the United Kingdom.

TotalEnergies SE, a multi-energy company, produces and markets oil and biofuels, natural gas, green gases, renewables, and electricity in France, rest of Europe, North America, Africa, and internationally. It operates through five segments: Exploration & Production, Integrated LNG, Integrated Power, Refining & Chemicals, and Marketing & Services. The Exploration & Production segment is involved in the exploration and production of oil and natural gas. The Integrated LNG segment comprises the integrated gas chain, including upstream and midstream liquified natural gas (LNG) activities, as well as biogas, hydrogen, and gas trading activities. The Integrated Power segment includes generation, storage, electricity trading, and B2B-B2C distribution of gas and electricity. The Refining & Chemicals segment consists of refining, petrochemicals, and specialty chemicals. This segment also includes oil supply, trading, and marine shipping activities. The Marketing & Services segment supplies and markets petroleum products. The company was formerly known as TOTAL SE and changed its name to TotalEnergies SE in June 2021. TotalEnergies SE was founded in 1924 and is headquartered in Courbevoie, France.

Eni S.p.A. operates as an integrated energy company worldwide. The company engages in exploration, development, extracting, manufacturing, and marketing crude oil and natural gas, oil-based fuels, chemical products, and gas-fired power, as well as energy products from renewable sources. It operates through Exploration & Production; Global Gas & LNG Portfolio (GGP); Enilive, Refining and Chemicals; Plenitude & Power; and Corporate and Other Activities segments. The company engages in research, development, and production of oil, condensates, and natural gas. It is also involved in the supply and sale of wholesale natural gas through pipeline; and international transport, and purchase and marketing of liquefied natural gas. In addition, the company supplies bio-feedstock and crude oil; and stores, produces, distributes, and markets biofuels, oil products, biomethane, basic chemical and petrochemical products, intermediates, plastics and elastomers, and other chemicals, as well as provides smart mobility solutions and mobility services. Further, it engages in the retail marketing of gas, electricity, and related services; production and wholesale sale of electricity from thermoelectric and renewable plants; and provision of services for E-mobility. The company was founded in 1953 and is headquartered in Rome, Italy.

Ecopetrol S.A. operates as an integrated energy company. The company operates through four segments: Exploration and Production; Transport and Logistics; Refining, Petrochemical and Biofuels; and Electric Power Transmission and Toll Roads Concessions. It engages in the exploration and production of oil and gas; transportation of crude oil, motor fuels, fuel oil, and other refined products, including diesel, jet, and biofuels; processing and refining crude oil; distribution of natural gas and LPG; sale of refined and petrochemical products; supplying of electric power transmission services; design, development, construction, operation, and maintenance of road and energy infrastructure projects; and supplying of information technology and telecommunications services. As of December 31, 2022, the company had approximately 9,127 kilometers of crude oil and multi-purpose pipelines. It also produces and commercializes polypropylene resins and compounds, and masterbatches; and offers industrial service sales to customers and specialized management services. It has operations in Colombia, the United States, Asia, Central America and the Caribbean, Europe, and South America. The company was formerly known as Empresa Colombiana de Petróleos and changed its name to Ecopetrol S.A. in June 2003. Ecopetrol S.A. was incorporated in 1948 and is headquartered in Bogotá, Colombia.