CNOOC Limited announced that Jinzhou 31-1 gas field development project commenced production. Jinzhou 31-1 gas field locates in Liaodong Bay of Bohai Sea, with an average water depth of about 30 meters. The main production facilities include 1 subsea production system, 1 submarine transportation pipeline, and 1 umbilical cable.

It will fully utilize the existing processing facilities of Jinzhou 25-1 south platform and apply the first shallow-water Christmas tree independently developed in China. The project is expected to reach its peak production of approximately 14.8 million cubic feet of natural gas per day in 2023.