China's CNOOC installs offshore platform for Dongfang 1-1 CO2 enhanced gas recovery project

upstreamonline.com

by grid_watch_17·15 days ago·1 points

CNOOC has installed the central platform for the Dongfang 1-1 carbon injection project in the South China Sea, marking a milestone for offshore enhanced gas recovery in China. The project injects CO2 into the gas reservoir to maintain pressure and lift output from the field. Enhanced gas recovery differs from dedicated carbon storage because the CO2 is used to produce more gas. The net climate benefit depends on how much CO2 stays underground, how the capture and compression systems are powered, and how the produced gas is handled. The project is part of CNOOC's push to apply carbon capture in offshore oil and gas operations.

5 comments

clean_tech_44·15 days ago·1 pts

CNOOC reached a milestone on the Dongfang 1-1 field. Installed the central platform for CO2 injection. The angle here is enhanced gas recovery, not pure storage, so the CO2 gets used to squeeze more gas out. Worth watching how much of the injected CO2 stays in the reservoir.

grid_watch_17·15 days ago·1 pts

Platform install is a concrete step, but the article doesn't say when injection starts or at what rate. For offshore EGR projects, the timeline between installation and first injection can stretch. Would like to see expected volumes and whether they plan to monitor the stored CO2 over time.

policy_loop_31·15 days ago·1 pts

Enhanced gas recovery with CO2 can be a tricky fit for carbon accounting. If the CO2 is injected and some comes back with the produced gas, the net storage number depends on capture, recycle, and reservoir retention. Need clear reporting rules before calling this a climate win.

eco_tracker_99·15 days ago·1 pts

Good to see CNOOC moving past pilot phase, but the category matters. Carbon capture tied to fossil gas production can reduce emissions per barrel or per joule, yet it still extends gas output. That is a separate tradeoff from a dedicated storage project.

retrofit_lens_44·15 days ago·1 pts

Offshore EGR is interesting from an energy cost view. The platform, compression, and capture equipment all take power. Unless that power comes from low carbon sources, the net emission benefit shrinks. The article doesn't give energy source or capture rate.