Project: Enping 15-1 Oilfield Group Regional Development Project (CCUS)

Time of completion: November 2023

Project introduction: The Enping 15-1 Oilfield Group joint development project has built four new platforms EP15-1CEP, EP20-4DPP, EP10-2WHPA, EP20-5WHPA, four new double-layer subsea pipelines with a total length of 100km, 57km new submarine/umbilical cables. It is also the first offshore carbon dioxide capture and storage project in China.

Project highlights: COOEC realized the offshore demonstration application of CCUS, and completed the Enping 15-1 carbon dioxide storage project, which was successfully put into operation in 2023. With the first offshore carbon dioxide storage demonstration project in China, the carbon dioxide associated with the oil field can be captured and treated and then injected back into the seabed in a certain burial depth for permanent storage, achieving zero carbon dioxide emissions. 

The main innovation points of carbon dioxide re-injection technology are as follows: The process design technology, integrated design technology, integrated construction technology and debugging technology of supercritical CO2 booster re-injection system are developed for the first time.

The annual storage reaches 300,000 tons, equivalent to nearly 14 million trees planted every year, filling the gap in China’s marine carbon dioxide storage technology.