1.Saudi Aramco (Saudi Aramco for short): Founded in 1988 and headquartered in dhahran, Saudi Arabia, it is the only company engaged in oil exploration and development in Saudi Arabia. At present, Saudi Aramco is the world's largest oil production company and the sixth largest oil refiner, with operations all over the Kingdom of Saudi Arabia and the world. Mainly engaged in oil exploration, development, production, refining, transportation and sales, with the world's largest onshore oil fields and offshore oil fields. In terms of revenue, manpower and assets, this company is the largest oil company in the Middle East.
2. Iranian Ministry of Oil: Established in 195 1 and headquartered in Tehran, it is in charge of all aspects of the oil industry on behalf of the Iranian government. The company has six subsidiaries, namely Iran National Offshore Oil Company, Iran National Drilling Company, Iran National Tanker Company, Iran National Petroleum Products Company, Kara Co., Ltd. and National Petroleum Engineering Development Company. There is also a Naftiran international trading company affiliated to Iran National Oil Company. The company's business scope includes oil exploration, development and production, as well as oil refining.
3. ExxonMobil: The company was formerly known as ExxonMobil, merged and reorganized on1October 30th, 1999 165438. The company is also the parent company of Exxon, Mobil and Esso's global branches. In addition, ExxonMobil, Shell, BP and Total are the four largest crude oil companies in the world. Exxon, founded in 1882, is the largest oil company in the United States and one of the seven oldest oil companies in the world. Founded in 1882, Mobil Company is a comprehensive multinational company integrating exploration and development, oil refining and petrochemical.
4. PETROLEO DE VENEZUELA S.A: Founded on August 30th, 1975, it is the largest state-owned enterprise in Venezuela and the largest enterprise in Latin America. Venezuela's national oil company is a multinational energy company, engaged in business and commercial operations at home and abroad, including oil and gas exploration, development, refining, transportation and distribution, as well as Orimulsion, chemical, petrochemical and coal industries.
5. China Petroleum and Natural Gas Co., Ltd. (CNPC) is a comprehensive energy company integrating oil and gas exploration and development, oil refining and chemical industry, oil product sales, oil and gas storage and transportation, oil trade, engineering and technical services and petroleum equipment manufacturing. In 2005, after China Petroleum acquired the overseas oil and gas assets of its parent company, its oil and gas reserves and output increased substantially, leading to an increase in its ranking, which was two places higher than that of the previous year.
6.BP: 1909, founded by William Knox D 'Arcy, was originally named Anglo-Persian Oil Company, 1954 was renamed BP, 1998 merged with Amoco, and in 2000, it acquired Amoco. At present, BP is the fourth largest multinational oil company with integrated upstream and downstream operations in the world, covering more than 100 countries and regions around the world, covering three major fields: oil and gas exploration and exploitation, petroleum refining and marketing, petrochemical industry, and also involving finance, solar energy and other aspects.
7. Royal Dutch/Shell Company Group (Shell): Founded in 1907, in order to compete with American Standard Oil Company, the largest oil company at that time, Royal Dutch Oil merged with British Shell Transportation Trading Co., Ltd. in 1907, with Royal Dutch Oil Company accounting for 60% and Shell Transportation Trading Company accounting for 40%. Shell is one of the so-called Seven Sisters, and it is still an important competitor in the fields of petroleum, energy, chemical industry and solar energy. Shell has five core businesses, including exploration and production, natural gas and electricity, coal gasification, chemicals and renewable energy. Shell has branches or businesses in more than 40 countries and regions around the world.
Conocophillips: Conocophillips was formed by the merger of Conocophillips and Conocophillips on August 30, 2002, and its headquarters is in Houston, Texas, USA. The merged new company inherits the rich experience of the two companies in the energy industry for more than 200 years and the excellent technology in the oil field, and is one of the outstanding companies in the world today. ConocoPhillips is mainly engaged in the exploration, production, processing and sales of oil and natural gas, as well as the production and sales of chemical and plastic products.
9. Chevron: the second largest oil company in the United States, 200 1 10. /kloc-in October, Chevron merged Texaco, one of its main competitors, into Chevron-Texaco, headquartered in the United States. On May 9, 2005, Chevron Texaco Company announced its name change to "Chevron Company". The company's business covers 180 countries and regions around the world, and it is one of the most competitive global energy companies today, covering all fields of the oil and gas industry, including exploration and development, oil refining, sales and transportation, production and sales of chemical products, and power generation.
10. Total: founded on 1924, French Total 10 merged with Belgian FINA, and in March 2000, Total Fina merged with French Elf. It consists of three brands: Total, FINA and Elf. The company is mainly engaged in oil and gas exploration, production, refining, sales and trade of refined oil, pigments and special chemical products, transportation of crude oil and its derivatives and transportation and sales of natural gas.