| 发明名称 |
Remote control method and device for actuating an equipment-application to a drill string |
| 摘要 |
The present invention relates to a device for actuating equipment from a distance through a flow variation of a fluid in a pipe. The device and method of this invention are suited for incorporation into a drill string.
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| 申请公布号 |
US5483987(A) |
申请公布日期 |
1996.01.16 |
| 申请号 |
US19940362952 |
申请日期 |
1994.12.23 |
| 申请人 |
INSTITUT FRANCAIS DU PETROLE |
发明人 |
AMAUDRIC DU CHAFFAUT, BENOIT;BOULET, JEAN |
| 分类号 |
E21B21/06;E21B7/06;E21B17/10;E21B21/12;E21B23/00;E21B23/04;E21B47/09;(IPC1-7):E21B34/10 |
主分类号 |
E21B21/06 |
| 代理机构 |
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代理人 |
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| 地址 |
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