Impregnated Bit with Improved Grit Protrusion
    9.
    发明申请
    Impregnated Bit with Improved Grit Protrusion 有权
    浸渍钻头与改进的砂砾突起

    公开(公告)号:US20100230174A1

    公开(公告)日:2010-09-16

    申请号:US12403734

    申请日:2009-03-13

    IPC分类号: E21B10/54 E21B10/42

    CPC分类号: E21B10/54

    摘要: A diamond impregnated drill bit features layered encapsulation of the diamond grit where the innermost layer is hardest or most abrasion resistant while succeeding layers are generally softer and less wear resistant. This can be accomplished by manipulating several variables in the encapsulation layers such as particle size or hard particle concentration. The outer layers can have added binder to make them softer. The encapsulated grit can be sintered or pre-sintered to make it less friable when handled. As a result the encapsulated diamonds are retained in the matrix longer with higher protrusion to improve bit longevity and penetration rates.

    摘要翻译: 金刚石浸渍钻头具有金刚石砂粒的分层封装,其中最内层是最硬的或最耐磨的,而后续的层通常更软和更少的耐磨性。 这可以通过操作诸如粒度或硬粒子浓度的封装层中的若干变量来实现。 外层可以添加粘合剂使其更柔软。 包封的砂砾可以烧结或预烧结,使其在处理时变得更不易碎。 因此,具有更高突出性的封装的钻石更长时间地保留在基体中,以提高钻头寿命和渗透速率。

    DOWNHOLE TOOL BEARING SYSTEM CONTAINING DIAMOND ENHANCED MATERIALS
    10.
    发明申请
    DOWNHOLE TOOL BEARING SYSTEM CONTAINING DIAMOND ENHANCED MATERIALS 审中-公开
    包含钻石增强材料的井下工具轴承系统

    公开(公告)号:US20090205873A1

    公开(公告)日:2009-08-20

    申请号:US12367787

    申请日:2009-02-09

    IPC分类号: E21B10/22

    CPC分类号: E21B10/22

    摘要: Downhole tool bearings are provided with diamond enhanced materials. The diamond enhanced materials comprise diamond grains in a matrix of tungsten or silicon carbide. A brazed diamond grit or diamond particles coated with a reactive braze may be utilized for bearing applications. Bearing rings formed at least in part with diamond enhanced material are installed on at least one of the bearing pin journal, the nose and the cone cavity. The bearing rings may be continuous rings or partial rings and attached to the journal pin or cone cavity. These may include thrust bearings, rollers, roller race, balls and ball races made of diamond enhanced material. These bearing surfaces also are formed at least in part with diamond enhanced material and attached to portions of the journal or cone bearing surfaces.

    摘要翻译: 井下工具轴承配有钻石增强材料。 金刚石增强材料包括在钨或碳化硅的基体中的金刚石晶粒。 用反应性钎焊涂覆的钎焊金刚石砂粒或金刚石颗粒可用于轴承应用。 至少部分形成有金刚石增强材料的轴承环安装在轴承销轴颈,鼻部和锥体腔中的至少一个上。 轴承圈可以是连续的环或部分环,并且连接到轴颈销或锥形腔。 这些可能包括由钻石增强材料制成的推力轴承,滚子,滚子赛,球和球赛。 这些轴承表面也至少部分地由金刚石增强材料形成,并且附接到轴颈或锥形轴承表面的部分。