CNOOC Limited (the "Company", SEHK: 00883 (HKD Counter) and 80883 (RMB Counter), SSE: 600938) today announces that Luda 5-2 North Oilfield Phase II Development Project has commenced production.

The project is located in the central part of the Bohai Sea, with an average water depth of approximately 30 meters. The main production facilities include 1 new auxiliary production platform and 1 production wellhead platform. A total of 29 development wells are planned to be commissioned, including 28 production wells and 1 water source well. The project is expected to achieve a peak production of approximately 6,700 barrels of oil equivalent per day in 2026. The oil property is heavy crude.

Luda 5-2 North Oilfield is the first oilfield to produce from super heavy oil reservoirs through thermal recovery in China. Its Phase I Project had already commenced production in 2022. CNOOC Limited made major technological breakthroughs in this project and significantly enhanced the development efficiency of offshore super heavy oil. The Phase II Project will further tap the resources of the oilfield. Through optimized Jet Pump Injection-Production Technology, the project realized efficient and economic development of heavy crude, which could further enhance the Company's energy supply capacity.

CNOOC Limited holds 100% interest in this project and is the operator.