China National Petroleum Corporation (hereinafter referred to as China National Petroleum Corporation) is a super-large petroleum and petrochemical enterprise group established on the basis of the former China National Petroleum Corporation in July 1998. The company's restructuring was completed in December 2017.

     PetroChina is a wholly state-owned company, a comprehensive international energy company integrating production, refining, transportation, storage, and trading. Its main businesses include oil and gas exploration and development at home and abroad, oil refining and chemical industry, oil and gas sales, pipeline transportation, international trade, engineering technology services, and engineering construction , Equipment manufacturing, financial services, new energy development, etc. In 2017, it ranked third in the comprehensive ranking of the world's 50 largest oil companies, and ranked fourth in the Fortune Global 500 ranking.