发明名称 |
Apparatus for providing a thrust force to an elongate body in a borehole |
摘要 |
A downhole tool for providing a thrust force to an elongate body extending in a borehole formed in an earth formation is provided. The tool comprises at least one rotatable body provided with a plurality of rollers, each roller being expandable against the borehole wall at a selected contact force between the roller and the borehole wall. The rollers are oriented when expanded against the borehole wall so as to roll along a helical path on the borehole wall, and a motor is provided to rotate each rotatable body. The tool further comprises a device to measure the thrust force provided by the tool and a control system to control the thrust force provided by the tool by regulating the rotative torque of the rotatable body, in response to the measured thrust force.
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申请公布号 |
US5960895(A) |
申请公布日期 |
1999.10.05 |
申请号 |
US19960606524 |
申请日期 |
1996.02.23 |
申请人 |
SHELL OIL COMPANY |
发明人 |
CHEVALLIER, SEBASTIEN ARNAUD;FAURE, ALBAN MICHEL;OOSTERLING, PETER |
分类号 |
E21B19/08;E21B17/10;E21B44/00;E21B44/02;(IPC1-7):E21B44/00;E21B4/00 |
主分类号 |
E21B19/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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