- 专利标题: TORQUE TRANSFER AND CONTROL APPARATUS FOR A DRILLING TOOL
-
申请号: US17600698申请日: 2020-04-03
-
公开(公告)号: US20220170328A1公开(公告)日: 2022-06-02
- 发明人: Andrew BEACH , Amir MOKARAMIAN
- 申请人: REFLEX INSTRUMENTS ASIA PACIFIC PTY LTD
- 申请人地址: AU Balcatta, Western Australia
- 专利权人: REFLEX INSTRUMENTS ASIA PACIFIC PTY LTD
- 当前专利权人: REFLEX INSTRUMENTS ASIA PACIFIC PTY LTD
- 当前专利权人地址: AU Balcatta, Western Australia
- 优先权: AU2019901165 20190404
- 国际申请: PCT/AU2020/050343 WO 20200403
- 主分类号: E21B17/043
- IPC分类号: E21B17/043 ; E21B17/07 ; F16D3/10 ; F16D7/02 ; F16D7/10
摘要:
There is disclosed a torque transfer apparatus for a mineral drilling tool used in a downhole assembly of a drill string. The drilling tool has a downhole drill bit and one or more uphole drill bits spaced apart from the downhole drill bit, with the torque transfer apparatus being located between them. The apparatus has an axial bore therethrough for fluid flow and comprises first and second members being rotatably joined to each other. The apparatus rotationally couples and transfers torque between the first and second members when a torque difference between torque on the downhole drill bit and torque on the uphole drill bit is below a threshold torque value. The apparatus disengages the rotational coupling while the torque difference exceeds the threshold torque value. The flow rate of drilling fluid flowing through the axial bore is altered when the apparatus engages and disengages the coupling.