Invention Grant
US08096372B2 Cutter geometry for increased bit life and bits incorporating the same
有权
刀具几何形状,增加钻头的寿命和结合相同的钻头
- Patent Title: Cutter geometry for increased bit life and bits incorporating the same
- Patent Title (中): 刀具几何形状,增加钻头的寿命和结合相同的钻头
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Application No.: US11781648Application Date: 2007-07-23
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Publication No.: US08096372B2Publication Date: 2012-01-17
- Inventor: Yuelin Shen , Youhe Zhang , Sujian Huang , Peter T. Cariveau
- Applicant: Yuelin Shen , Youhe Zhang , Sujian Huang , Peter T. Cariveau
- Applicant Address: US TX Houston
- Assignee: Smith International, Inc.
- Current Assignee: Smith International, Inc.
- Current Assignee Address: US TX Houston
- Agency: Osha Liang LLP
- Main IPC: E21B10/08
- IPC: E21B10/08

Abstract:
An improved cutter for fixed cutter drill bits includes a base portion with a longitudinal axis that extends through a center of the base portion and a cutting face which is generally centered with the base portion. The cutting face has a periphery edge geometry comprising a first arcuate segment and a second arcuate segment spaced apart and arranged opposite each other with linear edge segments disposed there between forming sides of the cutting face. The cutting face spans a maximum edge-to-edge dimension L in a first direction that corresponds to a major axis of the cutting face. The cutting face spans a maximum edge-to-edge dimension W in a second direction, which is perpendicular to the first direction, and W is less than L.
Public/Granted literature
- US20080296070A1 CUTTER GEOMETRY FOR INCREASED BIT LIFE AND BITS INCORPORATING THE SAME Public/Granted day:2008-12-04
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