公开(公告)号：US20220213747A1

公开(公告)日：2022-07-07

申请号：US17309233

申请日：2018-11-12

Applicant: SHENZHEN UNIVERSITY ,  SICHUAN UNIVERSITY

Inventor： Mingzhong GAO ,  Heping XIE ,  Ling CHEN ,  Jun GUO ,  Zhilong ZHANG ,  Zetian ZHANG ,  Ru ZHANG ,  Yiqiang LU ,  Cong LI ,  Zhiqiang HE

IPC: E21B23/04 ,  E21B21/10 ,  E21B34/06 ,  E21B25/10

Abstract: A control mechanism of a core drilling rig has a central rod and an outer barrel. The central rod passes through, from the rear to the front, the inner cavities of a fluid channel activation module, an outer barrel unlocking module, a flow diverging module, and a coring barrel connecting module. The coring barrel connecting module has a core tube connecting pipe, a core ring bearing, a bearing inner ring, a ball A and a ball B. The core tube connecting pipe is connected at the front side thereof to the coring barrel. The bearing inner ring is inside the core tube connecting pipe. The core ring bearing is connected to an inner wall of the outer barrel. A ball slot A is formed on the inner wall of the core ring bearing. The core tube connecting pipe is provided with has a ball hole A and a ball slot B.

公开(公告)号：US20220213736A1

公开(公告)日：2022-07-07

申请号：US17309235

申请日：2018-11-12

Applicant: SHENZHEN UNIVERSITY ,  SICHUAN UNIVERSITY

Inventor： Mingzhong GAO ,  Heping XIE ,  Ling CHEN ,  Jun GUO ,  Zhilong ZHANG ,  Zetian ZHANG ,  Ru ZHANG ,  Yiqiang LU ,  Cong LI ,  Zhiqiang HE

IPC: E21B10/60 ,  E21B25/10 ,  E21B25/08

Abstract: A drilling fluid channel structure of a core drilling rig includes a fluid channel activation module, a pressure relief module, a flow diverging and blocking module, a driving fluid channel and a cooling fluid channel. The fluid channel activation module, the pressure relief module and the flow diverging and blocking module are connected sequentially from the rear to the front. The driving fluid channel and the cooling fluid channel are connected at the rear side thereof to the flow diverging and blocking module. The driving fluid channel includes a driving section located between a stator and a rotor of a driving motor. The driving fluid channel is provided with a driving fluid outlet at the front side of the driving section. The cooling fluid channel passes through a layer disposed between an integrity-preserving compartment and an outer barrel.