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    Thermally stable diamond cutting elements in roller cone drill bits
    3.
    发明申请
    Thermally stable diamond cutting elements in roller cone drill bits 失效
    滚子锥钻头中的热稳定金刚石切割元件

    公开(公告)号：US20070023206A1

    公开(公告)日：2007-02-01

    申请号：US11189425

    申请日：2005-07-26

    申请人： Madapusi Keshavan ,  Anthony Griffo

    发明人： Madapusi Keshavan ,  Anthony Griffo

    IPC分类号： E21B10/16

    CPC分类号： E21B10/16 ,  E21B10/567 ,  E21B17/1092

    摘要： A roller cone drill bit for drilling earth formations includes a bit body having at least one roller cone rotably attached to the bit body and a plurality of cutting elements disposed on the at least one roller cone in a plurality of rows arranged circumferentially around the at least one roller cone, wherein at least one cutting element in the gage row, the heel row, or a surface of the at least one roller cone bounded by the gage and heel rows comprises thermally stable polycrystalline diamond or a thermally stable polycrystalline diamond composite. The at least one cutting element may be a TSD insert or a TSD composite insert and may be formed by brazing, sintering, or bonding by other technologies known in the art a thermally stable polycrystalline diamond table to a substrate. The interface between the diamond table and the substrate may be non-planar. A roller cone drill bit includes a bit body, at least one roller cone rotably attached to the bit body, and a plurality of cutting elements disposed on the at least one roller cone, where at least one of the plurality of cutting elements comprises thermally stable polycrystalline diamond or a thermally stable polycrystalline diamond composite and a cutting surface, wherein at least a portion of the cutting surface is contoured.

    摘要翻译： 一种用于钻探地层的滚子锥钻头包括一个钻头体，该钻头体具有可旋转地连接到钻头体上的至少一个滚子锥体，以及设置在至少一个滚子锥体上的多个切割元件， 一个滚子锥体，其中，所述量规行中的至少一个切割元件，所述后跟行或由所述计量和所述后跟行限定的所述至少一个滚子圆锥的表面包括热稳定的多晶金刚石或热稳定的多晶金刚石复合材料。 至少一个切割元件可以是TSD插入件或TSD复合插入件，并且可以通过本领域已知的其它技术将热稳定的多晶金刚石台面钎焊，烧结或粘合形成到基底上。 金刚石台和基板之间的界面可以是非平面的。 滚子锥形钻头包括钻头体，可旋转地附接到钻头体的至少一个滚子锥体和设置在至少一个滚子锥体上的多个切割元件，其中多个切割元件中的至少一个包括热稳定的 多晶金刚石或热稳定多晶金刚石复合材料和切割表面，其中切割表面的至少一部分是轮廓。

    Impregnated diamond cutting structures
    5.
    发明申请
    Impregnated diamond cutting structures 有权
    浸渍金刚石切割结构

    公开(公告)号：US20060081402A1

    公开(公告)日：2006-04-20

    申请号：US10967651

    申请日：2004-10-18

    申请人： Greg Lockwood ,  Thomas Oldham ,  Anthony Griffo ,  Madapusi Keshavan ,  David Conroy

    发明人： Greg Lockwood ,  Thomas Oldham ,  Anthony Griffo ,  Madapusi Keshavan ,  David Conroy

    IPC分类号： E21B10/36

    CPC分类号： C22C26/00 ,  B22F2005/001 ,  C22C2026/006 ,  E21B10/46 ,  Y10T29/49885

    摘要： An insert for a drill bit that includes diamond particles disposed in a matrix material, wherein the diamond particles have a contiguity of 15% or less is disclosed. A method of forming a diamond-impregnated cutting structure, that includes loading a plurality of substantially uniformly coated diamond particles into a mold cavity, pre-compacting the substantially uniformly coated diamond particles using a cold-press cycle, and heating the compacted, substantially uniformly coated diamond particles with a matrix material to form the diamond impregnated cutting structure is also disclosed.

    摘要翻译： 一种用于钻头的插入件，其包括设置在基体材料中的金刚石颗粒，其中所述金刚石颗粒的接缝度为15％以下。 一种形成金刚石浸渍的切割结构的方法，其包括将多个基本上均匀涂覆的金刚石颗粒加载到模腔中，使用冷压循环对大致均匀涂覆的金刚石颗粒进行预压实，并加热压实的基本均匀的 还公开了具有基质材料以形成金刚石浸渍切割结构的涂覆金刚石颗粒。

    IMPREGNATED DIAMOND CUTTING STRUCTURES
    6.
    发明申请
    IMPREGNATED DIAMOND CUTTING STRUCTURES 有权
    镶嵌金刚石切割结构

    公开(公告)号：US20080128951A1

    公开(公告)日：2008-06-05

    申请号：US12021131

    申请日：2008-01-28

    申请人： Greg Lockwood ,  Thomas Oldham ,  Anthony Griffo ,  Madapusi Keshavan ,  David Conroy

    发明人： Greg Lockwood ,  Thomas Oldham ,  Anthony Griffo ,  Madapusi Keshavan ,  David Conroy

    IPC分类号： B22F3/12 ,  E21B10/46

    CPC分类号： C22C26/00 ,  B22F2005/001 ,  C22C2026/006 ,  E21B10/46 ,  Y10T29/49885

    摘要： An insert for a drill bit that includes diamond particles disposed in a matrix material, wherein the diamond particles have a contiguity of 15% or less is disclosed. A method of forming a diamond-impregnated cutting structure, that includes loading a plurality of substantially uniformly coated diamond particles into a mold cavity, pre-compacting the substantially uniformly coated diamond particles using a cold-press cycle, and heating the compacted, substantially uniformly coated diamond particles with a matrix material to form the diamond impregnated cutting structure is also disclosed.

    摘要翻译： 一种用于钻头的插入件，其包括设置在基体材料中的金刚石颗粒，其中所述金刚石颗粒的接缝度为15％以下。 一种形成金刚石浸渍的切割结构的方法，其包括将多个基本上均匀涂覆的金刚石颗粒加载到模腔中，使用冷压循环对大致均匀涂覆的金刚石颗粒进行预压实，并加热压实的基本均匀的 还公开了具有基质材料以形成金刚石浸渍切割结构的涂覆金刚石颗粒。

    Polycrystalline Diamond Constructions Having Improved Thermal Stability
    9.
    发明申请
    Polycrystalline Diamond Constructions Having Improved Thermal Stability 审中-公开
    具有改善热稳定性的多晶金刚石结构

    公开(公告)号：US20090173015A1

    公开(公告)日：2009-07-09

    申请号：US12399369

    申请日：2009-03-06

    申请人： Madapusi K. Keshavan ,  Anthony Griffo ,  Yuelin Shen ,  Youhe Zhang

    发明人： Madapusi K. Keshavan ,  Anthony Griffo ,  Yuelin Shen ,  Youhe Zhang

    IPC分类号： E21B10/46 ,  C04B37/00 ,  B01J3/06

    CPC分类号： B24D18/00 ,  B01J3/062 ,  B01J2203/062 ,  B01J2203/0655 ,  B01J2203/0685 ,  C04B35/645 ,  C04B37/026 ,  C04B2237/363 ,  C04B2237/401 ,  C04B2237/61 ,  Y10T156/10 ,  Y10T428/31678

    摘要： Polycrystalline diamond constructions include a diamond body comprising a matrix phase of bonded together diamond crystals formed at high pressure/high temperature conditions with a catalyst material. The sintered body is treated remove the catalyst material disposed within interstitial regions, rendering it substantially free of the catalyst material used to initially sinter the body. Accelerating techniques can be used to remove the catalyst material. The body includes an infiltrant material disposed within interstitial regions in a first region of the construction. The body includes a second region adjacent the working surface and that is substantially free of the infiltrant material. The infiltrant material can be a Group VIII material not used to initially sinter the diamond body. A metallic substrate is attached to the diamond body, and can be the same or different from a substrate used as a source of the catalyst material used to initially sinter the diamond body.

    摘要翻译： 多晶金刚石结构包括金刚石体，其包括在高压/高温条件下与催化剂材料结合的金刚石晶体的基体相。 处理烧结体去除设置在间隙区域内的催化剂材料，使其基本上不含用于初始烧结体的催化剂材料。 可以使用加速技术来除去催化剂材料。 身体包括设置在构造的第一区域中的间隙区域内的渗透材料。 主体包括邻近工作表面的第二区域，其基本上不含渗透材料。 渗透材料可以是不用于初始烧结钻石体的VIII族材料。 金属基底附接到金刚石体，并且可以与用作初始烧结金刚石体的催化剂材料的源的基底相同或不同。