On March 19, China's first independently designed offshore carbon dioxide injection well started drilling at Enping 15-1 platform, which will inject and seal up CO₂ generated during oil and gas exploration into the seabed. The project is expected to store 300,000 metric tons of CO₂ per year at its peak, with a cumulative storage of 1.5 million tons.

Enping 15-1 platform, Asia's largest offshore oil production platform equipped with China's first offshore CO₂ storage device, was put into operation in December 2022.

CNOOC has carried out research on key technologies related to geological reservoirs, drilling and completion as well as engineering integration suitable for offshore CO₂ storage, and finally decided to store the greenhouse gas in a domed geological structure about 3 kilometers away from Enping 15-1.

Filling a void in China's offshore CO₂ storage technology, the project provides a new choice for carbon reduction in subsequent oil and gas field development and large-scale emission reductions of coastal high-emission enterprises.