发明授权
- 专利标题： Wellbore consolidating tool for rotary drilling applications
- 专利标题（中）： 用于旋转钻井应用的Wellbore固结工具
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申请号： US12277881申请日： 2008-11-25
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公开(公告)号： US07810559B2公开(公告)日： 2010-10-12
- 发明人: Iain Cooper , Claude Vercaemer , William Lesso , Benjamin Peter Jeffryes , Michael Charles Sheppard
- 申请人： Iain Cooper , Claude Vercaemer , William Lesso , Benjamin Peter Jeffryes , Michael Charles Sheppard
- 申请人地址： US CT Ridgefield
- 专利权人： Schlumberger Technology Corporation
- 当前专利权人： Schlumberger Technology Corporation
- 当前专利权人地址： US CT Ridgefield
- 代理商 James McAleenan; Vincent Loccisano; Brigid Laffey
- 主分类号： E21B37/02
- IPC分类号： E21B37/02 ; E21B12/06
摘要：
A subpart of a drill string is described having an outer circumferential surface which is contoured and adapted to engage the wall of the borehole with a small angle of attack while exerting during rotary drilling operations an compacting pressure on mud cake and/or cuttings present in the annulus between the drill string and the borehole.