Enping 15-1 CCS

The Enping 15-1 CCS project is an offshore carbon capture and storage development located in the Pearl River Mouth Basin, South China Sea, and operated by CNOOC. The project captures CO₂ produced during offshore oil and gas operations and reinjects it into subsurface reservoirs for permanent geologic storage, representing China’s first large-scale offshore CCS deployment. CO₂ separated from produced gas streams at the Enping 15-1 oilfield is compressed on offshore facilities and injected into deep saline formations via dedicated injection wells. The project is designed to reduce operational emissions associated with offshore hydrocarbon production while demonstrating offshore CCS technologies including capture, compression, transportation, and injection within a single integrated platform. Injection targets deep subsurface formations with suitable porosity and sealing capacity typical of the Pearl River Mouth Basin’s stacked sedimentary sequences.