Chinese deep-sea drilling system achieves milestone at 1,500-meter depth

The trial's focus was the newly developed deep-sea engineering geological sampling and in-situ detection system, Wan said. This system can accurately measure cone tip resistance, side friction, and pore water pressure of seabed formations at depths up to 1,500 meters, while also enabling efficient sampling and real-time wireless data transmission.

The team conducted a series of critical tests, including assessments of geological core sampling quality, in-situ cone penetration test detection capability, and wireless acoustic transmission of CPT data. All core indicators met project targets, confirming the reliability of this domestically developed deep-sea equipment.

In 2021, the Hainiu II deep-sea drilling rig set a world record by drilling down to 231 meters at nearly 2,000 meters beneath the South China Sea.