December 21, 2025

China National Offshore Oil Corporation (CNOOC) on Sunday announced cumulative output from the offshore oil and gas at the Bohai Oilfield, China's largest crude oil production base, has exceeded 40 million tons, setting a new record and providing solid support for national energy security and high-quality economic and social development.

Bohai Oilfield is China's largest and most productive offshore oilfield. Since the beginning of the year, the oilfield has comprehensively strengthened its production capacity, promoted intelligent drilling and completion processes and the standardized upgrading of engineering systems, and many new projects have been rapidly completed and put into operation. The oilfield's conventional production areas have contributed more than 32 million tons of crude oil annually.

By tapping technological breakthroughs, the company's large-scale offshore heavy thermal recovery operations secured an annual output of 2 million tons, according to a CNOOC release sent to the Global Times.

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