CNOOC confirms Caofeidian 6-4 in Bohai as midsized oil field

CNOOC Ltd. has drilled and completed the Caofeidian 6-4-1 discovery well in western Bohai at a depth of 3,100 m, encountering oil pay zones with total thickness of 180 m.

The well produces light crude oil tested at 5,750 b/d. CNOOC says Caofeidian 6-4-1 has set three records in the western Bohai exploration area in achieving maximum cumulative thickness, maximum single pay thickness of oil pay zones, and the highest test production in Paleogene clastic rocks.

The structure, discovered in 2014, lies in the western part of the Shijutuo Uplift in an average of 20 m of water.

“The successful appraisal of Caofeidian 6-4 structure not only represents a significant breakthrough after several years of exploration in the west of Bohai, but also provides important guidance in oil and gas exploration in similar areas,” the company said in Oct. 22 news release. “In addition, it also helps ensure reserves and production growth in Bohai.”

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