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124 条记录 (耗时 0.035 秒)

    Layered hardfacing, durable hardfacing for drill bits
    95.
    发明授权
    Layered hardfacing, durable hardfacing for drill bits 失效
    分层硬面，耐用的钻头硬化面

    公开(公告)号：US07373997B2

    公开(公告)日：2008-05-20

    申请号：US11061305

    申请日：2005-02-18

    申请人： Kumar T. Kembaiyan ,  Madapusi K. Keshavan ,  Alysia C. White ,  Brian A. White

    发明人： Kumar T. Kembaiyan ,  Madapusi K. Keshavan ,  Alysia C. White ,  Brian A. White

    IPC分类号： E21B10/46 ,  C23C30/00

    CPC分类号： E21B10/54

    摘要： A drill bit having a bit body having at least one blade thereon, at least one cutter pocket disposed on the at least one blade, at least one cutter disposed in the at least one cutter pocket, hardfacing applied to at least a selected portion of the drill bit is shown and described. The hardfacing includes a first hardfacing layer disposed on the selected portion of the drill bit, a second hardfacing layer disposed on the first hardfacing layer, wherein the first hardfacing layer has a hardness different than a hardness of the second hardfacing layer.

    摘要翻译： 一种具有位于其上的至少一个刀片的钻头体的钻头，设置在所述至少一个刀片上的至少一个切割器凹槽，设置在所述至少一个切割器凹槽中的至少一个切割器，至少施加到所述至少一个刀片的选定部分的硬化面 显示和描述钻头。 表面硬化包括设置在钻头的选定部分上的第一表面硬化层，设置在第一表面硬化层上的第二表面硬化层，其中第一表面硬化层具有与第二表面硬化层的硬度不同的硬度。

    Impregnated diamond cutting structures
    96.
    发明授权
    Impregnated diamond cutting structures 有权
    浸渍金刚石切割结构

    公开(公告)号：US07350599B2

    公开(公告)日：2008-04-01

    申请号：US10967651

    申请日：2004-10-18

    申请人： Greg Lockwood ,  Thomas W. Oldham ,  Anthony Griffo ,  Madapusi K. Keshavan ,  David A. Conroy

    发明人： Greg Lockwood ,  Thomas W. Oldham ,  Anthony Griffo ,  Madapusi K. Keshavan ,  David A. Conroy

    IPC分类号： 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。

    Rolling cone bit having gage and nestled gage cutter elements having enhancements in materials and geometry to optimize borehole corner cutting duty
    99.
    发明授权
    Rolling cone bit having gage and nestled gage cutter elements having enhancements in materials and geometry to optimize borehole corner cutting duty 失效
    具有量具和套管式切割器元件的滚动钻头具有增强的材料和几何形状以优化钻孔角切削功能

    公开(公告)号：US5967245A

    公开(公告)日：1999-10-19

    申请号：US879874

    申请日：1997-06-20

    申请人： Gary Edward Garcia ,  Gary Ray Portwood ,  James Carl Minikus ,  Per Ivar Nese ,  Dennis Cisneros ,  Chris Edward Cawthorne ,  Madapusi K. Keshavan

    发明人： Gary Edward Garcia ,  Gary Ray Portwood ,  James Carl Minikus ,  Per Ivar Nese ,  Dennis Cisneros ,  Chris Edward Cawthorne ,  Madapusi K. Keshavan

    IPC分类号： E21B10/16 ,  E21B10/52 ,  E21B17/10

    CPC分类号： E21B17/1092 ,  E21B10/16 ,  E21B10/52

    摘要： A rolling cone bit includes a cone cutter having a gage row and an adjacent nestled gage row of cutter elements that are positioned on gage so as to divide or share the borehole corner cutting duty. The wear resistance, hardness, toughness and shape of the cutter elements in the adjacent rows are optimized depending upon the type of cutting the respective rows perform, the characteristics of the formation being drilled and the drilling techniques being employed. In most applications, the nestled gage cutter elements will have cutting surfaces that are more wear resistant or harder than the cutting surfaces of the gage cutter elements which experience more bottom hole duty. The nestled gage cutter elements engage the borehole wall with a negative rake angle for increased durability. Preferably, the nestled gage cutter elements have continuously contoured and non-shearing cutting surfaces.

    摘要翻译： 滚动锥头包括锥形切割器，该切割器具有定位在量规上的量具行和相邻的切割器元件排列，以分割或共享钻孔角切削功能。 相邻行中的切割器元件的耐磨性，硬度，韧性和形状根据相应行执行的切割类型，被钻孔的特征和所采用的钻孔技术而优化。 在大多数应用中，配套的量具切割器元件将具有比经验更多的底坑功能的量规切割器元件的切割表面更耐磨或更硬的切割表面。 套管式切割器元件与具有负前角的钻孔壁接合以提高耐久性。 优选地，所述定位的量具切割器元件具有连续成型和非剪切切割表面。