CNOOC delivers first oil from Weizhou 5-3 offshore China

June 9, 2025
CNOOC has started up production from its Weizhou 5-3 oilfield development in the South China Sea.

CNOOC has started up production from its Weizhou 5-3 oilfield development in the South China Sea.

The project, in 35 m water depth in Beibu Gulf basin, involved construction of a new self-installing wellhead platform that has been connected to nearby offshore infrastructure.

CNOOC plans a total of seven production wells, two water injectors and one gas injector, and is targeting peak production of about 10,000 boe/d next year. The oil is a medium crude.

The company operates the project with a 51% interest, in partnership with Smart Oil Investment (49%).