Ten units that PetroChina is most difficult to enter.

The ten most difficult companies for PetroChina to enter include China Petroleum International Enterprise Co., Ltd., Petroleum Exploration and Development Research Institute, China Petroleum Exploration and Development Company, China Petroleum Technology Development Company, China Global Engineering Company, China Petroleum Central Asia Natural Gas Pipeline Co., Ltd., China Petroleum Group Engineering Design Co., Ltd., Beijing Oil and Gas Control Center, China Petroleum Group Economic and Technological Research Institute and Beijing Petroleum Management Cadre College.

1, China Petroleum International Enterprise Co., Ltd.

China Petroleum International Co., Ltd. and China United Petroleum Co., Ltd. implement the operation mode of one team and two brands. The reason why this company ranks first among the top companies is that all crude oil imports of PetroChina need to be imported through it.

2. China Petroleum Exploration and Development Research Institute

China Petroleum Exploration and Development Research Institute is a comprehensive research institution of China Petroleum and Natural Gas Group Company for global oil and gas exploration and development, including Beijing Branch, Langfang Branch, Northwest Branch and Hangzhou Geological Research Institute. The business scope covers oil and gas exploration, oil and gas field development, oil and gas well engineering, informationization and standardization, new energy exploration and development, technical training, postgraduate education, etc.

3. China Oil and Gas Exploration and Development Company

The pioneers of PetroChina's overseas oil and gas projects have traveled all over except the North and South Poles. In the pure Party A mode, a dozen people can handle a foreign block. Exploration and Development Company is a professional company that China Petroleum is responsible for the centralized management of overseas oil and gas exploration and development, oil refining and chemical industry, pipeline operation and other businesses.

4. China Petroleum Technology Development Company

China Petroleum Technology Development Company (CPTDC) is a wholly-owned subsidiary of China Petroleum and Natural Gas Group Corporation, a major supplier of materials and equipment for overseas projects of the Group Corporation, and a specialized company engaged in the export business of petroleum materials and equipment, aiming at ensuring the development of overseas oil and gas business of the Group Corporation and promoting the export of equipment manufacturing products.

5. China Qiu Huan Engineering Company

China Qiu Huan Engineering Company, affiliated to China Oil and Gas Group, is an international engineering company with technology as the guide and design as the leading factor, integrating consulting, R&D, design, procurement, construction management, equipment manufacturing and commissioning guidance, with comprehensive capabilities of project management general contracting and general contracting. It is an intellectual and technology-intensive state-owned key enterprise.

6. China Petroleum Central Asia Natural Gas Pipeline Co., Ltd.

CNPC Zhongya Natural Gas Pipeline Co., Ltd. is a wholly-owned subsidiary of China Petroleum and Natural Gas Group Corporation. Founded in August 2007, the company is mainly responsible for the construction and operation of natural gas pipelines in Central Asia, and its registered place is Beijing. At present, the company's business covers China, Kazakstan, Uzbekistan, Tajikistan, Kyrgyzstan and other countries and regions.

7. China Petroleum Group Engineering Design Co., Ltd.

China Petroleum Group Engineering Design Co., Ltd. ("CPE" for short) is a supplier of general contracting, project management consulting and technical equipment directly under China Petroleum and Natural Gas Group Corporation, with independent research and development capabilities, mainly focusing on upstream business.

8. Beijing Oil and Gas Control Center

Beijing Oil and Gas Control Center is a long-distance oil and gas pipeline control center formally established by China Petroleum on May 8, 2006 to optimize the pipeline operation management system and adapt to the rapid development of pipeline business. It is a directly affiliated unit of China Petroleum and Natural Gas Group Corporation. The main function of the center is remote monitoring, operation, dispatching management and emergency maintenance coordination of the long-distance oil and gas pipeline belonging to China Petroleum.

9. Economic and Technological Research Institute of China Petroleum Group

Economic and Technological Research Institute of China Petroleum Group is a scientific research institution directly under China Petroleum Group, which is mainly engaged in trend analysis and strategic research on petroleum industry development, petroleum science and technology, petroleum economy, petroleum market, overseas investment environment, policies and regulations, and provides a wide range of energy information consulting services. Its predecessor was the Institute of Science and Technology Information of the Ministry of Petroleum Industry, which was established in 1964.

10, Beijing Petroleum Management Cadre College

Beijing Petroleum Management Cadre College is an advanced training center and party school directly under China Petroleum and Natural Gas Group Corporation. Founded in 1984, the campus covers an area of nearly 100 mu. It mainly provides training services for middle and senior management cadres of group companies and subordinate enterprises and institutions, and can train 1200 people at the same time.

Reference to the above content: Baidu Encyclopedia-China Petroleum International Enterprise Co., Ltd.