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China’s First Offshore Carbon Dioxide Injection Well to Aid Carbon Neutrality Goals

BusinessChina's First Offshore Carbon Dioxide Injection Well to Aid Carbon Neutrality Goals

China National Offshore Oil Corp (CNOOC) has developed China’s first independently designed offshore carbon dioxide injection well, according to industry experts. The well will facilitate the Chinese government’s goal of achieving carbon neutrality by 2060 while filling a void in China’s offshore CO2 storage technology.

Located in the South China Sea, off the mouth of the Pearl River, the offshore CO2 injection well will inject and seal up CO2 generated during oil and gas exploitation into the seabed, storing 300,000 metric tons of the greenhouse gas per year at its peak and up to 1.5 million tons cumulatively. The well is equipped with China’s first offshore CO2 storage device, developed by CNOOC.

CNOOC’s Guo Yongbin said the company had initially developed a complete set of equipment capable of carrying out CO2 injection, storage, and monitoring, thereby filling a gap in China’s offshore CO2 storage technology. This project will provide guidance for subsequent oil and gas field development and large-scale emission reductions of coastal high-emission enterprises while opening up a new road of carbon reduction and environmental protection, said Lin Boqiang, head of the China Institute for Studies in Energy Policy at Xiamen University.

The Enping 15-1 facility, where the well is located, is Asia’s largest offshore oil production platform and was put into operation in December. CNOOC conducted research on key technologies related to geological reservoirs, drilling and completion, and engineering integration suitable for offshore CO2 storage before deciding to store the greenhouse gas in a domed geological structure about three kilometers away from Enping 15-1. The project will store CO2 produced by some high-emission enterprises in coastal areas and serve as a reference and guidance for subsequent large-scale CO2 injection wells.

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