| 发明名称 |
Torque Control Device For A Downhole Drilling Assembly |
| 摘要 |
This invention relates to a torque control device for a downhole drilling assembly, the torque control device being adapted for connection to a drill bit. The torque control device includes an outer sleeve and an inner shaft, the outer sleeve being movable longitudinally relative to the inner shaft. The torque control device has a cylinder, a piston located within the cylinder, and a rotary valve to control the volume of the cylinder. The volume of the cylinder can be changed by way of the rotary valve whereby to adjust the weight on bit and thereby control the torque upon the drill bit. |
| 申请公布号 |
US2016265292(A1) |
申请公布日期 |
2016.09.15 |
| 申请号 |
US201615161441 |
申请日期 |
2016.05.23 |
| 申请人 |
Smart Stabilizer Systems Limited |
发明人 |
Crowley Daniel Brendan;Walker Colin |
| 分类号 |
E21B21/10;E21B3/00 |
主分类号 |
E21B21/10 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A torque control device for a downhole drilling assembly, the torque control device being adapted for connection to a drill bit, the torque control device including an outer sleeve and an inner shaft, the outer sleeve being movable longitudinally relative to the inner shaft, the torque control device having a cylinder, a piston located within the cylinder, and a rotary valve to control the volume of the cylinder. |
| 地址 |
Ashchurch GB |
