Double Sintered Thermally Stable Polycrystalline Diamond Cutting Elements
    1.
    发明申请
    Double Sintered Thermally Stable Polycrystalline Diamond Cutting Elements 审中-公开
    双烧结热稳定多晶金刚石切割元件

    公开(公告)号:US20100242375A1

    公开(公告)日:2010-09-30

    申请号:US12750526

    申请日:2010-03-30

    IPC分类号: E21B10/46 B24D3/00 E21B10/567

    摘要: Embodiments of the invention include a polycrystalline diamond compact comprising a plurality of double-sintered polycrystalline diamond segments. The polycrystalline diamond segments are configured to remain thermally stable at a first temperature. The polycrystalline diamond segments are positioned upon and bonded to a transition layer of single-sintered polycrystalline diamond that is configured to remain thermally stable at a second temperature lower than the first temperature. The transition layer is positioned upon and bonded to a substrate. Embodiments of the invention have improved thermally stability, resulting in fewer defects during manufacturing and improved longevity in use.

    摘要翻译: 本发明的实施例包括包含多个双烧结多晶金刚石段的多晶金刚石块。 多晶金刚石段被配置成在第一温度下保持热稳定。 多晶金刚石片段位于并结合到单烧结多晶金刚石的过渡层,其被配置为在低于第一温度的第二温度下保持热稳定。 过渡层位于基底上并结合到基底上。 本发明的实施方案具有改进的热稳定性,导致制造过程中的缺陷减少和使用寿命的延长。

    Insert in a downhole drill bit
    2.
    发明授权
    Insert in a downhole drill bit 有权
    插入井下钻头

    公开(公告)号:US07533738B1

    公开(公告)日:2009-05-19

    申请号:US12169288

    申请日:2008-07-08

    IPC分类号: E21B10/00 E21B10/36

    CPC分类号: E21B10/633

    摘要: A drill bit assembly has a bit body intermediate a shank and a working face. At least one wear resistant insert is press-fitted within a pocket formed in an outer surface of the bit. An urging element is disposed between the outer surface and a bore of the bit and the urging element is adapted to push the insert away from the bore.

    摘要翻译: 钻头组件具有位于柄部和工作面之间的钻头体。 至少一个耐磨插入件被压配合在形成在钻头的外表面中的凹穴内。 推动元件设置在钻头的外表面和钻孔之间,并且推动元件适于将刀片推离孔。