CNOOC commissions China's 1st offshore CCS demonstration project

State-owned energy company CNOOC on June 1 announced the official commissioning of China's first offshore CCS demonstration project.

The project is an auxiliary part of the Enping 15-1 oilfields development. Enping 15-1 oilfield is located in the Pearl River Mouth basin, about 190 km southwest of Hong Kong, with an average water depth of approximately 80 m and has a high carbon dioxide content.

The CCS module can capture and process the CO₂ produced from the oilfield and inject it into the saline water layer at a depth of around 800 m under the seabed, CNOOC said.

“The successful commissioning of the project demonstrates that CNOOC Limited has a complete set of technology and equipment system for the capturing, processing, injection, sequestration and monitoring of carbon dioxide at offshore oil and gas fields, which fills the gap in China's offshore carbon dioxide storage technology,” the company said.

The project can store over 1.5mn metric tons of carbon dioxide, equivalent to planting nearly 14mn trees.