5 Biggest Private Oil Companies in the World

2. Sinopec Group

Annual Revenue 2021: $401.31 billion

Headquartered in Beijing, China, Sinopec Group is one of the world’s largest oil and gas companies. The domestic operations of the company include the exploration and production of oil and gas, refining operations, chemical production, and marketing. The international operations of Sinopec Group comprise investments in 46 oil and gas exploration and production projects in 23 countries. Sinopec Group operates over 30,000 gas stations across the country.