发明授权
- 专利标题： High-strength, high-toughness matrix bit bodies
- 专利标题（中）： 高强度，高韧性矩阵钻头体
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申请号： US11343225申请日： 2006-01-30
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公开(公告)号： US07475743B2公开(公告)日： 2009-01-13
- 发明人: Dah-Ben Liang , Anthony Griffo , Thomas W. Oldham , Gregory T. Lockwood
- 申请人： Dah-Ben Liang , Anthony Griffo , Thomas W. Oldham , Gregory T. Lockwood
- 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： Osha • Liang LLP
- 主分类号： E21B10/00
- IPC分类号： E21B10/00
摘要：
A drill bit that includes a bit body formed from a matrix powder and at least one cutting element for engaging a formation, wherein the matrix powder included (a) stoichiometric tungsten carbide particles, (b) cemented tungsten carbide particles, and (c) cast tungsten carbide particles, and wherein after formation with the matrix powder, the bit has an erosion rate of less than 0.001 in/hr, a toughness of greater than 20 ksi(in0.5), and a transverse rupture strength of greater than 140 ksi is disclosed.
公开/授权文献
- US20070175669A1 High-strength, high-toughness matrix bit bodies 公开/授权日：2007-08-02
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