Invention Grant
- Patent Title: Thermally stable polycrystalline diamond cutting elements and bits incorporating the same
- Patent Title (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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Application No.: US12406764Application Date: 2009-03-18
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Publication No.: US07946363B2Publication Date: 2011-05-24
- Inventor: Youhe Zhang , Yuelin Shen , Madapusi K. Keshavan , Michael G. Azar
- Applicant: Youhe Zhang , Yuelin Shen , Madapusi K. Keshavan , Michael G. Azar
- 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: E21B10/36
- IPC: E21B10/36
Abstract:
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.
Public/Granted literature
- US20090178855A1 THERMALLY STABLE POLYCRYSTALLINE DIAMOND CUTTING ELEMENTS AND BITS INCORPORATING THE SAME Public/Granted day:2009-07-16
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