发明名称 |
Downhole Drive Shaft Connection |
摘要 |
In one aspect of the present invention, a section of a drill string has a drill bit with a body intermediate a shank and a working face, the working face having at least one cutting element. A jack element is disposed within the drill bit body and has a distal end substantially protruding from the working face. A drive shaft is in communication with the jack element and a rotary source. The drive shaft has a first portion secured within a bore of a tool string component in the tool string and a second portion secured within a bore of the drill bit. The first and second portions of the drive shaft are connected at a pin and box connection wherein the first and second portions are automatically connected as the tool string component is mechanically coupled to the drill bit.
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申请公布号 |
US2009152011(A1) |
申请公布日期 |
2009.06.18 |
申请号 |
US20070956623 |
申请日期 |
2007.12.14 |
申请人 |
HALL DAVID R;LUNDGREEN DAVID;TUMER PAULA;WISE DARYL;NELSON NATHAN;PILGRIM ANDREW;MYLER ROBERT |
发明人 |
HALL DAVID R.;LUNDGREEN DAVID;TUMER PAULA;WISE DARYL;NELSON NATHAN;PILGRIM ANDREW;MYLER ROBERT |
分类号 |
E21B7/08;E21B10/36 |
主分类号 |
E21B7/08 |
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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