The bottom-hole power hard rock coring drilling tool independently developed by the Institute of Exploration Technology of the Chinese Academy of Geological Sciences recently successfully completed sea trials in Shanwei waters. The hollow bottom-hole power drilling tool achieved drilling 10.1 meters in the seafloor granite formation for the first time, and cored 8.69 meters. meters, the coring rate reached 86.04%, far exceeding the IODP hard rock coring level. The success of this sea trial marks a breakthrough in my country's research on key equipment for hard rock coring in ocean drilling.

The successful sea trial of the bottom-hole power hard rock coring drilling tool is the world's first successful case of hollow screw hard rock coring. It solves the world's technical problem of "hollow screw + rope coring" and provides opportunities for ocean scientific drilling and Ultra-deep hole hard rock coring provides a new set of technological tools and provides strong technical support for my country's ocean drilling to penetrate the Moho and explore the mysteries of the deep earth.