On January 2, CNOOC announced that China's largest offshore gas field, "Deep Sea No.1," has completed its 100th crude oil export shipment since commissioning, with the field's total oil and gas output for 2025 surpassing 45 million tons of oil equivalent. The "Deep Sea No.1" ultra-deepwater gas field is China's first independently developed offshore gas field with the greatest operational water depth, highest formation temperature and pressure, most challenging exploration and development conditions, and largest natural gas production capacity; its maximum operational water depth exceeds 1,500 meters, the highest formation temperature reaches 138 degrees Celsius, and its proven natural gas geological reserves exceed 150 billion cubic meters, with development planned in two phases.
The core installations of the two-phase project, the "Deep Sea No.1" energy station and the "Four Stars in a Row" platform cluster, both possess fundamental deep-sea oil and gas processing capabilities, enabling the separation and export of natural gas and crude oil to be completed offshore. Currently, "Deep Sea No.1" produces 15 million cubic meters of natural gas and over 1,600 tons of condensate oil daily. A portion of the condensate oil is stored in the oil storage tanks within the platform's four columns and is exported via shuttle tankers once a certain volume is reached.
The on-site operations team has been continuously upgrading the production equipment and facilities at "Deep Sea No.1," applying years of offshore gas field production management experience to optimize the process flow and maximize the production potential of the deepwater gas field. Presently, the operations team has independently established a complete set of production operation and maintenance technology systems for ultra-deepwater gas fields, reducing the crude oil export operation time for the "Deep Sea No.1" energy station to less than 8 hours.
Comments