Invention Grant
US08191657B2 Rotary drag bits for cutting casing and drilling subterranean formations
有权
用于切割套管和钻探地下地层的旋转拖曳钻头
- Patent Title: Rotary drag bits for cutting casing and drilling subterranean formations
- Patent Title (中): 用于切割套管和钻探地下地层的旋转拖曳钻头
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Application No.: US12473980Application Date: 2009-05-28
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Publication No.: US08191657B2Publication Date: 2012-06-05
- Inventor: Volker Richert , Henning Finke
- Applicant: Volker Richert , Henning Finke
- Applicant Address: US TX Houston
- Assignee: Baker Hughes Incorporated
- Current Assignee: Baker Hughes Incorporated
- Current Assignee Address: US TX Houston
- Agency: TraskBritt
- Main IPC: E21B10/43
- IPC: E21B10/43 ; E21B10/46
Abstract:
A drill bit for cutting casing employing a plurality of discrete, abrasive particulate-impregnated cutting structures having cutting structures therein extending upwardly from abrasive particulate-impregnated blades, which define a plurality of fluid passages therebetween on the bit face. Additional cutting elements may be placed in the inverted cone of the bit surrounding the centerline thereof.
Public/Granted literature
- US20100300673A1 SIDE TRACK BIT Public/Granted day:2010-12-02
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