Invention Grant
- Patent Title: Drill bit with cutter element having crossing chisel crests
- Patent Title (中): 钻头与切割元件有交叉凿顶
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Application No.: US11947226Application Date: 2007-11-29
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Publication No.: US07798258B2Publication Date: 2010-09-21
- Inventor: Amardeep Singh , Mohammed Boudrare
- Applicant: Amardeep Singh , Mohammed Boudrare
- Applicant Address: US TX Houston
- Assignee: Smith International, Inc.
- Current Assignee: Smith International, Inc.
- Current Assignee Address: US TX Houston
- Agency: Christie, Parker & Hale, LLP
- Main IPC: E21B10/56
- IPC: E21B10/56

Abstract:
A drill bit for cutting a borehole comprises a bit body including a bit axis. In addition, the drill bit comprises a rolling cone cutter mounted on the bit body. Further, the drill bit comprises a cutter element having a base portion with a diameter and a cutting portion extending therefrom. The cutting portion comprising a first pair of flanking surfaces that taper towards one another to form a first elongate chisel crest, and a second pair of flanking surfaces that taper towards one another to form a second elongate chisel crest that intersects the first elongate chisel crest in top view. The first crest tangent angle at 10% of the diameter measured radially from the central axis on the first elongate chisel crest in profile view is greater than 75° and less than or equal to 90°.
Public/Granted literature
- US20080156544A1 DRILL BIT WITH CUTTER ELEMENT HAVING CROSSING CHISEL CRESTS Public/Granted day:2008-07-03
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