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    High Stiffness Tool For Expanding A Wellbore
    2.
    发明申请
    High Stiffness Tool For Expanding A Wellbore 审中-公开
    用于扩展井筒的高刚度工具

    公开(公告)号：US20150008041A1

    公开(公告)日：2015-01-08

    申请号：US14322420

    申请日：2014-07-02

    申请人： SMITH INTERNATIONAL, INC.

    发明人： David R. Hall ,  Jonathan D. Marshall ,  Adam R. Aquino ,  Scott S. Dahlgren

    IPC分类号： E21B10/32 ,  E21B7/28

    CPC分类号： E21B10/322

    摘要： A downhole tool may be used to enlarge and widen a wellbore. The downhole tool may include a reamer with a mandrel that includes a rib extending radially outward from a cylindrical body of the mandrel. The rib may define one or more grooves. A cutter block or other expandable member may be positioned adjacent the rib and may include one or more extensions that mate with the grooves. The rib and cutter block may be positioned within a slot of a housing. The housing may also include one or more grooves on a surface along the slot. The grooves along the slot and the grooves on rib may mate with extensions on opposing sides of the expandable member to define a path by which the expandable member moves between expanded and retracted positions.

    摘要翻译： 井下工具可用于扩大和扩大井筒。 井下工具可以包括具有心轴的扩孔器，所述心轴包括从心轴的圆柱体径向向外延伸的肋。 肋可以限定一个或多个凹槽。 切割器块或其它可膨胀构件可以邻近肋定位并且可以包括与凹槽配合的一个或多个延伸部。 肋和切割器块可以定位在壳体的槽内。 壳体还可以包括沿着槽的表面上的一个或多个凹槽。 沿着槽的凹槽和肋上的凹槽可以与可扩张构件的相对侧上的延伸部配合，以限定可扩展构件在伸展位置和缩回位置之间移动的路径。

    POLYCRYSTALLINE DIAMOND CUTTING ELEMENTS WITH TRANSITION ZONES AND DOWNHOLE CUTTING TOOLS INCORPORATING THE SAME
    4.
    发明申请
    POLYCRYSTALLINE DIAMOND CUTTING ELEMENTS WITH TRANSITION ZONES AND DOWNHOLE CUTTING TOOLS INCORPORATING THE SAME 审中-公开
    具有过渡区域的多晶金刚石切割元件和与其同时进行的切割工具

    公开(公告)号：US20150129322A1

    公开(公告)日：2015-05-14

    申请号：US14533716

    申请日：2014-11-05

    申请人： SMITH INTERNATIONAL, INC.

    发明人： David R. Hall ,  Ronald B. Crockett ,  Neil Cannon ,  Dwain Norris ,  Madapusi K. Keshavan

    IPC分类号： E21B10/573 ,  E21B10/55 ,  E21B10/567 ,  B24D18/00 ,  B24D3/06

    CPC分类号： E21B10/5735 ,  B24D3/06 ,  B24D18/0009 ,  E21B10/52 ,  E21B10/55 ,  E21B10/567 ,  E21B10/5673

    摘要： A cutting element may include a substrate including a plurality of metal carbide particles and a first metal binder having a first metal binder content; an outer layer of polycrystalline diamond material at an end of the cutting element, the polycrystalline diamond material including a plurality of interconnected diamond particles; and a plurality of interstitial regions disposed among the interconnected diamond particles, the plurality of interstitial regions containing a second metal binder having a second metal binder content. The cutting element also includes at least one transition zone between the substrate and the outer layer, the at least one transition zone including a plurality of refractory metal carbide particles and a third metal binder having a third metal binder content, the third metal binder content being less than the first metal binder content and the second metal binder content.

    摘要翻译： 切割元件可以包括包括多个金属碳化物颗粒的基材和具有第一金属粘合剂含量的第一金属粘合剂; 在切割元件的端部处的多晶金刚石材料的外层，所述多晶金刚石材料包括多个互连的金刚石颗粒; 以及布置在相互连接的金刚石颗粒之间的多个间隙区域，所述多个间隙区域包含具有第二金属粘结剂含量的第二金属粘合剂。 所述切割元件还包括在所述基底和所述外层之间的至少一个过渡区，所述至少一个过渡区包括多个难熔金属碳化物颗粒和具有第三金属粘合剂含量的第三金属粘合剂，所述第三金属粘合剂含量为 小于第一金属粘合剂含量和第二金属粘合剂含量。