| 发明名称 |
Downhole assembly |
| 摘要 |
A piezo electric control system for use in a downhole assembly which is inserted into a borehole comprising an articulated mandrel, a passive and an active damping mechanism operating on said mandrel for exercising control over torsional stick-slip in which said piezo electric system exercises control. |
| 申请公布号 |
US2015176344(A1) |
申请公布日期 |
2015.06.25 |
| 申请号 |
US201313998925 |
申请日期 |
2013.12.23 |
| 申请人 |
McLoughlin Stephen John;Swietlik George |
发明人 |
McLoughlin Stephen John;Swietlik George |
| 分类号 |
E21B17/10;E21B17/07;E21B7/00;E21B12/00 |
主分类号 |
E21B17/10 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A downhole assembly comprising piezo electric members configured to output an electrical signal in response to vibration of the assembly and controlling means for controlling an aspect of said downhole assembly, wherein the assembly is configured to provide a proportional control voltage for the controlling means from the magnitude of the electric signal outputted from the piezo electric members. |
| 地址 |
Apse Heath GB |
