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CNOOC Limited said Monday it made a mid-sized natural gas discovery at Bozhong 22-1 in Bohai.

The Bozhong 22-1 structure is located in south central Bohai with an average water depth of about 25 meters.

The discovery well Bozhong 22-1-2 was drilled and completed to a depth of 4,611 meters and encountered a gas reservoir with a total thickness of about 92 meters.

Gas production from  the well tested at around 14.2 million cubic feet per day.

CNOOC — the China National Offshore Oil Corporation — is the third-largest national oil company in China, after CNPC and China Petrochemical Corporation. It’s the biggest China producer of offshore oil and gas.

The discovery at Bozhong 22-1 “demonstrates the good prospects of buried hills for future gas exploration of south slope in Bozhong Sag,” CNOOC said.