- 专利标题: Ultra hard material cutter with shaped cutting surface
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申请号: US09731498申请日: 2000-12-07
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公开(公告)号: US06550556B2公开(公告)日: 2003-04-22
- 发明人: Stewart Middlemiss , Ronald K. Eyre
- 申请人: Stewart Middlemiss , Ronald K. Eyre
- 主分类号: E21B1046
- IPC分类号: E21B1046
摘要:
A cutting layer is provided having a radially extending depression formed on the exposed surface of the cutting element's cutting layer. A corresponding depression may be formed on the substrate end surface below the depression formed on the cutting layer. Furthermore, secondary shallower depressions may be formed on the cutting layer. The cutting element is typically mounted in a drag bit such that the cutting layer radially extending depression makes contact with the earth formations.
公开/授权文献
- US20020071729A1 Ultra hard material cutter with shaped cutting surface 公开/授权日:2002-06-13
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