CNOOC discovered a volcanic rock high-yield oil and gas well during ultra-deep stratigraphic drilling of more than 5,000 meters in the Bohai Sea, marking a major breakthrough in the field of offshore ultra-deep natural gas exploration. The well is located in the central waters of the Bohai Sea, close to the Bohai Sea's largest hydrocarbon-rich depression, the Bozhong Depression. It has accumulated over 120 meters of natural gas layers in volcanic rock strata, and completed drilling at a depth of 5,770 meters. After testing, the well produces about 800,000 cubic meters of natural gas per day, showing broad exploration prospects in the field of ultra-deep volcanic rock at sea, and strongly promoting the natural gas exploration process in the Bozhong Depression. Xu Changgui, chief scientist and chief geologist of CNOOC, said that in recent years, CNOOC has continued to step up theoretical innovation and key technical research on deep-ultra-deep oil and gas accumulation in high-heat flow active basins, and China's marine exploration has achieved a major leap from shallow to deep to ultra-deep. The successful drilling of this well has opened up a new offshore ultra-deep natural gas exploration zone and expanded the space for deep oil and gas exploration in the Bohai Sea. It is of positive significance in speeding up the ultra-deep exploration process in the Bohai Sea and building the Bohai Sea trillion-square atmospheric zone. (Financial Services Association)

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