Beijing, 2 January – China National Offshore Oil Corporation (CNOOC) announced on 2 January that the country’s largest offshore gas field, “Shanghai-1” (Deep Sea-1), has recently completed its 100th shipment of crude oil since commencing operations.
In 2025, the total oil and gas production from this gas field exceeded 4.5 million tonnes of standard oil, which is equivalent to the output of a medium-sized onshore oil field. This milestone indicates that China’s deep-sea gas field production and operation technologies have reached a world-class level.
“Shanghai-1” is the deepest offshore gas field independently developed by China to date. It operates at the greatest water depth, highest construction temperature, and pressure, and faces the most exploration and development challenges. It also has the largest proven natural gas production capacity among offshore gas fields. The project operates at maximum water depths exceeding 1,500 metres, with geological temperatures reaching up to 138 degrees Celsius, and proven natural gas geological reserves exceeding 15 billion cubic metres.
Currently, the “Shanghai-1” gas field produces 15 million cubic metres of natural gas and over 1,600 tonnes of condensate oil daily. Part of this condensate oil is stored in oil tanks located on the four pillars of the platform. Once a certain quantity is reached, the oil is transported out via shuttle tankers. This is one of the three world-class technologies employed at the “Shanghai-1” energy plant.
(Source – China Media Group, Beijing)
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