发明授权
- 专利标题: Drill bit steering assembly
- 专利标题(中): 钻头转向组件
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申请号: US12956915申请日: 2010-11-30
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公开(公告)号: US08820440B2公开(公告)日: 2014-09-02
- 发明人: David R. Hall , Scott Dahlgren , Jonathan Marshall
- 申请人: David R. Hall , Scott Dahlgren , Jonathan Marshall
- 代理商 Philip W. Townsend, III
- 主分类号: E21B7/04
- IPC分类号: E21B7/04 ; E21B7/08
摘要:
In one aspect of the present invention, a steering assembly for downhole directional drilling comprises an outer bit comprising a bore and an outer cutting area and in inner bit comprising an inner cutting area and connected to a shaft that is disposed within the bore. At least one biasing mechanism is disposed around the shaft. At least one fluid channel is disposed within the outer bit and redirects fluid to the at least one biasing mechanism causing the at least one biasing mechanism to push the shaft and alter an axis of the inner bit with respect to an axis of the outer bit.
公开/授权文献
- US20120080234A1 Drill Bit Steering Assembly 公开/授权日:2012-04-05
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