发明申请
- 专利标题: DRILL BIT WITH CUTTER ELEMENT HAVING CROSSING CHISEL CRESTS
- 专利标题(中): 具有切割机组的刀具元件钻头
-
申请号: US11947226申请日: 2007-11-29
-
公开(公告)号: US20080156544A1公开(公告)日: 2008-07-03
- 发明人: Amardeep Singh , Mohammed Boudrare
- 申请人: Amardeep Singh , Mohammed Boudrare
- 申请人地址: US TX Houston
- 专利权人: SMITH INTERNATIONAL, INC.
- 当前专利权人: SMITH INTERNATIONAL, INC.
- 当前专利权人地址: US TX Houston
- 主分类号: E21B10/08
- IPC分类号: E21B10/08
摘要:
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°.
公开/授权文献
- US07798258B2 Drill bit with cutter element having crossing chisel crests 公开/授权日:2010-09-21
信息查询