发明授权
- 专利标题: Steering device for downhole tools
- 专利标题(中): 井下工具转向装置
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申请号: US12423439申请日: 2009-04-14
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公开(公告)号: US08360172B2公开(公告)日: 2013-01-29
- 发明人: Bernd Santelmann
- 申请人: Bernd Santelmann
- 申请人地址: US TX Houston
- 专利权人: Baker Hughes Incorporated
- 当前专利权人: Baker Hughes Incorporated
- 当前专利权人地址: US TX Houston
- 代理机构: Cantor & Colburn LLP
- 主分类号: E21B7/04
- IPC分类号: E21B7/04
摘要:
An apparatus for drilling a wellbore may include a first section, a second section, and a third section, all of which are rotatably interconnected with pivot bearings and positioned along a drill string. The second section and the third section may be configured to form a controllable bend angle in the drill string. The first section, the second section, and the third section may be configured as sleeves that surround a portion of the drill string. One or more sections may include locking pads that selectively engage a wall of the wellbore. A hydraulic locking device for controlling a direction of rotation of the second section may include one or more brake elements and a reverse spinning sleeve. A first brake element may be used engage the reverse spinning sleeve and a second brake element may be used to engage a drive shaft.
公开/授权文献
- US20090260884A1 Steering Device for Downhole Tools 公开/授权日:2009-10-22
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