中国最大海上气田这样建成

Core Insights - The "Deep Sea No. 1" Phase II project has achieved full production, marking it as the largest offshore gas field in China with a maximum daily output of 15 million cubic meters [2][4] - This gas field is notable for being the deepest and most challenging to develop in terms of geological conditions, with 12 underwater wells exceeding 60,000 meters in total depth, temperatures reaching 138 degrees Celsius, and pressures up to 69 MPa [4][6] - The successful completion of the project is a significant milestone for China's deep-water high-pressure gas development, positioning the country among global leaders in this field [6][9] Production Capacity and Technical Challenges - The "Deep Sea No. 1" gas field consists of 23 underwater gas wells, all operational, contributing to a projected annual gas output of over 4.5 billion cubic meters [2][9] - The project faced extreme geological challenges, including high temperature and pressure, requiring innovative solutions and extensive research to ensure safe and efficient drilling operations [4][7] - The development of the underwater production system involved complex equipment and technology, with a focus on optimizing production management and simulating various operational scenarios [4][5] Technological Innovations and Achievements - The project has led to the creation of five world-first key technologies for drilling high-pressure wells, enhancing operational efficiency by over 30% [9] - A significant achievement includes the successful development of domestically produced high-density completion fluids, which saved nearly 100 million yuan in operational costs [7][9] - The establishment of a complete technical system for deep-water gas field development is expected to facilitate the economic and efficient development of other complex offshore oil and gas reserves in the future [10] Strategic Importance - The "Deep Sea No. 1" gas field is crucial for China's energy supply, with marine oil and gas production becoming a primary focus, accounting for approximately 80% of the national crude oil increase in 2024 [6][10] - The gas produced will support industrial and residential users in the Guangdong-Hong Kong-Macao Greater Bay Area and Hainan Free Trade Port, integrating into the national gas pipeline network [9][10]