China completes first 3,000-meter ultra-deep-water seismic exploration

China's independently developed "Haijing" system, a marine seismic exploration and acquisition equipment using submarine cables, completed the 3,000-meter ultra-deep-water seismic exploration for the first time, the China National Offshore Oil Corporation (CNOOC) said on Thursday. 　

The mission covered an area of 2,600 square kilometers in the ultra-deep water block located in the Pearl River Mouth Basin with an average operating depth of 2,000 meters and a maximum operating depth of 3,500 meters. 　

During the mission, the Haiyang Shiyou 720 vessel, a large deep-water geophysical exploration vessel owned by the CNOOC, deployed 10 submarine cables of the "Haijing" system to carry out the data collection work, each cable measuring more than eight kilometers. 　

Seismic exploration is the most direct way to find oil and gas resources in the vast depths of the ocean, and submarine cable-enabled seismic exploration technology is the most direct, cost-effective and efficient method for seabed geological structure detection. 　

(Reporter: Wang Enbo 　Editor: Ma Yuxuan)