公开(公告)号：US20240175323A1

公开(公告)日：2024-05-30

申请号：US18358016

申请日：2023-07-24

申请人： Southwest Petroleum University

发明人： Shiwei Niu ,  Yingxin YANG ,  Gao Li ,  Kuilin Huang ,  Chunliang Zhang ,  Haitao Ren ,  Lian Chen

IPC分类号： E21B4/10 ,  E21B4/00

CPC分类号： E21B4/10 ,  E21B4/006 ,  E21B10/54

摘要： A torque-adaptive impact tool suitable for a PDC (Polycrystalline Diamond Compact) bit is provided, which includes a PDC bit, a rotary-driving power device, and a torque-adaptive impact tool above the PDC bit. The torque-adaptive impact tool is located between the PDC bit and the rotary-driving power device, includes an outer housing, an upper end cover, a main shaft, an elastic element, an upper impact body, and a lower impact body. In a case of a normal operation of the bit, the tool does not impact the bit, but rotates along with the rotary-driving power device for drilling. In a case that a rock-breaking torque required by the bit exceeds a driving torque, the tool impact the bit.