China National Offshore Oil Corp announced on Monday the discovery of a high-production oil and gas well in the Bohai Sea, with a test daily output of nearly 1,400 cubic meters of oil and gas equivalents, a new record for daily production from deep-sea oil and gas exploration wells in China.

Located in the central part of the Bohai Sea, the well has a daily output of 855 cubic meters of crude oil and over 500,000 cubic meters of natural gas, indicating promising exploration prospects, it said.

In terms of China's marine oil and gas exploration practice, those buried more than 4,500 meters deep are usually referred to as ultra-deep layers. The well deployed by CNOOC is buried under more than 5,000 meters of seabed, a rare high-temperature, high-pressure ultra-deep oil and gas well in the country.

The successful drilling of the well further facilitates the offshore ultra-deep oil and gas exploration in China while accelerating the exploration process of ultra-deep layers in the Bohai Sea, it said.