On April 9th, according to China Offshore Oil, the "Deep Sea No.1" Phase II project has made remarkable progress in subsea engineering operations, successfully completing the installation of all three sets of deepwater subsea manifold systems. These manifold systems are not only the heaviest but also the most structurally complex.
This deepwater subsea multifunctional manifold system was entirely constructed by China independently and is being applied for the first time in the development of deepwater high-temperature and high-pressure oil and gas reservoirs, showcasing China's strong capabilities in deep-sea engineering.
It is understood that the "Deep Sea No.1" Phase II project is located approximately 70 kilometers away from the "Deep Sea No.1" energy station, with a water depth of nearly one kilometer. The project construction is massive, covering newly built comprehensive processing platforms, subsea production systems, seabed pipelines, umbilicals, and other key facilities.
Among them, the "Deep Sea No.1" Phase II project boasts a magnificent structure, with a total height of 136 meters, equivalent to nearly 49 floors of residential buildings, and a total weight exceeding 14,000 tons, equivalent to the combined weight of over 9,000 cars. The offshore production facility consists of east and west blocks, as well as ethylene glycol recovery and regeneration units and a stack bridge, with a total weight of over 7,500 tons. The projected area of the deck is large enough to cover five standard basketball courts.
It is worth mentioning that "Deep Sea No.1," as a deepwater gas field independently developed by China, faces the greatest exploration and development challenges and the deepest water depths domestically. Since its production, the gas field has accumulated over 7 billion cubic meters of gas production, making a huge contribution to national energy security.
With the commissioning of the "Deep Sea No.1" Phase II project, the peak annual production of the gas field is expected to increase by 50%, reaching an annual natural gas production of 4.5 billion cubic meters, adding new momentum to China's energy supply. This significant progress not only showcases China's strong capabilities in deep-sea oil and gas development but also provides strong support for the country's energy strategy.
