发明名称 |
Process and universal downhole motor for driving a tool |
摘要 |
The process enables, while starting from the same basical members, assembled in two different arrangements, to drive an earth-boring tool such as a bit, a milling cutter, a core barrel or the like with a reduced speed or a fast speed, according to the prevailing boring conditions. The downhole motor comprises a shaft and a body constituted by two helicoidal gears arranged within each other, providing an encapsulation preferably of right-handed pitch and having K and K+1 teeth. For providing a reduced speed the body is rotatably mounted and the tool is connected to said body. The shaft is angularly fixed and free to undergo a nutation movement. The resulting speed is the relative speed of rotation between the said body and the said shaft. For providing a fast rotation speed, the body is angularly and radially fixed. The helicoidal shaft meshes with the body and is supported in order freely to rotate around a crank system. The tool is connected to the crank.
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申请公布号 |
US4011917(A) |
申请公布日期 |
1977.03.15 |
申请号 |
US19760671494 |
申请日期 |
1976.03.29 |
申请人 |
TIRASPOLSKY, WLADIMIR;ROUVIERE, ROGER FRANCOIS |
发明人 |
TIRASPOLSKY, WLADIMIR;ROUVIERE, ROGER FRANCOIS |
分类号 |
E21B4/02;F01C1/10;F04C13/00;(IPC1-7):E21B3/12 |
主分类号 |
E21B4/02 |
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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