发明授权
- 专利标题: Thermally stable polycrystalline diamond cutting elements and bits incorporating the same
- 专利标题(中): 耐热稳定的多晶金刚石切割元件和结合其的钻头
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申请号: US11350620申请日: 2006-02-08
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公开(公告)号: US07533740B2公开(公告)日: 2009-05-19
- 发明人: Youhe Zhang , Yuelin Shen , Madapusi K. Keshavan , Mike Azar
- 申请人: Youhe Zhang , Yuelin Shen , Madapusi K. Keshavan , Mike Azar
- 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
- 代理机构: Christie, Parker & Hale, LLP
- 主分类号: E21B10/573
- IPC分类号: E21B10/573 ; E21B10/46
摘要:
Cutting elements are provided having substrates including end surfaces. TSP material layers extend over only a portion of the end surfaces or extend into the substrates below the end surfaces. Bits incorporating such cutting elements are also provided.
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