| 发明名称 |
Downhole Actuator Device |
| 摘要 |
A downhole actuator device comprises a central shaft formed with external threads; a sleeve formed with internal threads and placed substantially concentrically around the shaft and an electromotor arranged to rotate at least a first one of said shaft and said sleeve so that a second one of said shaft and said sleeve may be moved linearly relative to the first one of said shaft and said sleeve. The actuator further comprises a plurality of roller screws that are rotatingly supported between the shall and sleeve in engagement with said external threads on the shaft and said internal threads on the sleeve. |
| 申请公布号 |
US2015267491(A1) |
申请公布日期 |
2015.09.24 |
| 申请号 |
US201314436327 |
申请日期 |
2013.10.17 |
| 申请人 |
TARGET Intervention AS |
发明人 |
Bergland Kenneth;Bakke Stig;Berge Thomas |
| 分类号 |
E21B23/06;E21B33/128 |
主分类号 |
E21B23/06 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A downhole actuator device comprising:
a central shaft formed with external threads; a sleeve formed with internal threads placed substantial concentrically around the shaft; an electromotor arranged to rotate at least a first one of said shaft and said sleeve so that a second one of said shaft and said sleeve may be moved linearly relative to the first one of said shaft and said sleeve; and
a plurality of roller screws rotatingly supported between the shaft and sleeve in engagement with said external threads on the shaft and said internal threads on the sleeve; wherein the shaft is hollow. |
| 地址 |
Ålgård NO |
