Repsol S.A. is a Spanish multinational energy and petrochemical company based in Madrid. It is engaged in worldwide upstream and downstream activities. In the 2021 Forbes Global 2000, Repsol was ranked as the 683rd-largest public company in the world. As of 2021, it has more than 24,000 employees worldwide.
Shell plc is a British multinational oil and gas company headquartered in London, England. Shell is a public limited company with a primary listing on the London Stock Exchange and secondary listings on Euronext Amsterdam and the New York Stock Exchange.
TotalEnergies SE is a French multinational integrated energy and petroleum company founded in 1924 and one of the seven supermajor oil companies.
Chevron Corporation is an American multinational energy corporation. One of the successor companies of Standard Oil, and originally known as the Standard Oil Company of California, it is headquartered in San Ramon, California, and active in more than 180 countries.
Tatneft is a Russian vertically integrated oil and gas company with headquarters in the city of Almetyevsk, Republic of Tatarstan, Russian Federation. It is the fifth largest oil company in Russia and the eighth largest listed company in Russia by market capitalization.