Top Oil & Gas (Upstream, Midstream, Downstream and Refining) companies
The Oil & Gas sector within the Energy, Utilities & Environment industry encompasses the exploration, production, transportation, refining, and marketing of petroleum and natural gas resources. This sub-sector spans activities related to upstream exploration and production, midstream infrastructure, and downstream processing and retail operations. Upstream exploration and production focus on locating and extracting hydrocarbon reserves, involving geological surveys, drilling, and well development. Midstream activities include gathering, processing, storage, and transportation of hydrocarbons, ensuring efficient movement from production sites to refineries and distribution hubs through pipelines, shipping, rail, and trucking networks. Downstream operations involve refining crude oils, condensates, and natural gas liquids into finished fuels, chemicals, and other petroleum products, complemented by retail and marketing activities such as service stations and branded fuel outlets. The sector also encompasses specialized segments like petrochemicals and chemical feedstocks, lubricants and base oils, and the entire LNG value chain, including liquefaction, regasification, and trading. Collectively, these activities constitute the comprehensive chain that transforms raw hydrocarbons into end-user products, supporting global energy needs. The integration of these components plays a vital role in the energy industry’s operational efficiency, safety practices, and environmental management, with each segment contributing to the reliable supply of fuels, chemicals, and power across both industrial and consumer markets. This broad sector is essential for meeting energy demand while evolving to incorporate emerging technologies and sustainability considerations in a dynamic global environment.
10 companiesCompanyWebsiteHQ country
SLBSLB is the world's largest oilfield services and energy technology company, serving major international and national oil companies in 100+ countries through integrated digital platforms (Delfi, Lumi, Tela, Agora), AI-driven reservoir and production software, and traditional well construction, subsea, and production chemistry services.slb.comUnited States→
Baker HughesBaker Hughes is a Houston-based global energy technology company serving upstream, midstream, and industrial customers in 120+ countries with oilfield services, LNG and turbomachinery equipment, industrial technology, and digital platforms backed by AI and a 56,000-person workforce.bakerhughes.comUnited States→
BPBP p.l.c. is a global integrated energy company producing oil and gas, trading commodities, and operating retail fuel, lubricants, and EV charging businesses across more than 75 countries, serving national oil companies, industrial clients, and retail consumers.bp.comUnited Kingdom→
ShellShell plc is a London-headquartered global integrated energy company serving ~33 million daily retail consumers and 1M+ commercial customers across 70+ countries through upstream oil and gas, LNG, refining, lubricants, marketing, renewables, and one of the world's largest energy trading books.shell.comUnited Kingdom→
ChevronChevron is an integrated global energy supermajor operating upstream oil and gas production, downstream refining and marketing through branded fuel stations, and emerging dedicated power generation for AI data centers via Project Kilby serving hyperscale customers like Microsoft.chevron.comUnited States→
Energy Transfer PartnersEnergy Transfer LP is a Dallas-based Master Limited Partnership that owns approximately 140,000 miles of pipelines and NGL export terminals, providing fee-based natural gas, crude oil, and NGL transportation and storage services to producers, utilities, LNG exporters, and AI data center operators across North America.energytransfer.comUnited States→
Occidental PetroleumOccidental Petroleum is a Houston-based international oil and gas exploration and production company operating primarily in the Permian Basin and the Middle East, with adjacent carbon innovation businesses spanning direct air capture, CCUS, and direct lithium extraction for enterprise and government customers.oxy.comUnited States→
Kinder MorganKinder Morgan is the largest North American energy infrastructure operator, running ~78,000 miles of pipelines and 136 terminals that transport natural gas, refined products, and CO2 under long-term take-or-pay contracts serving LNG exporters, power generators, and AI data center developers.kindermorgan.comUnited States→
Saudi AramcoSaudi Aramco is a state-owned integrated energy and chemicals company producing crude oil, natural gas, refined products, and petrochemicals for national oil companies, joint-venture refineries, and industrial customers across more than 60 countries, with Asia representing over 50% of exports.aramco.comSaudi Arabia→
ExxonMobilExxonMobil is one of the world's largest integrated energy companies, operating upstream oil and gas, downstream refining, chemicals, and emerging low-carbon solutions across 54 countries under the Exxon, Mobil, and Esso brands, serving industrial customers, governments, and retail motorists globally.corporate.exxonmobil.comUnited States→
