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113 条记录 (耗时 0.016 秒)

    ORIENTED PYRAMID INSERTS
    2.
    发明公开
    ORIENTED PYRAMID INSERTS 审中-公开
    对齐的金字塔形插入

    公开(公告)号：EP2231994A2

    公开(公告)日：2010-09-29

    申请号：EP08866510.4

    申请日：2008-12-22

    申请人： Baker Hughes Incorporated

    发明人： PESSIER, Rolf Carl ,  FELDERHOFF, Floyd ,  BUSKE, Robert J.

    IPC分类号： E21B10/08 ,  E21B10/52 ,  E21B10/16

    CPC分类号： E21B10/52 ,  E21B10/16

    摘要： An earth boring drill bit comprising cones, each cone having rows of inserts, where the inserts are in the form of a pyramid with four sides. The insert includes ridges at the juncture of each adjacent side. The ridges extend to the top of the insert and meet at a crest. Oppositely disposed ridges on the insert lie substantially in the same plane, thereby forming two planes intersecting on the crest. The two planes are substantially perpendicular. The inserts are arranged on the cone such that one plane is substantially parallel with the insert row, and the other is substantially parallel with the cone axis.

    Earth roller dril bit with cutting structure
    5.
    发明公开
    Earth roller dril bit with cutting structure 失效
    地球旋转钻头具有切割结构

    公开(公告)号：EP0823535A3

    公开(公告)日：2002-10-09

    申请号：EP97113516.5

    申请日：1997-08-05

    申请人： BAKER HUGHES INCORPORATED

    发明人： Scott, Danny E. ,  Pessier, Rudolf Carl Otto

    IPC分类号： E21B10/16 ,  E21B10/52

    CPC分类号： E21B10/567 ,  E21B10/006 ,  E21B10/16 ,  E21B10/52 ,  E21B17/1092

    摘要： An earth-boring bit has a bit body and at least one cutter rotatably secured to the bit body. The cutter has a cutter shell surface including a gage surface and a heel surface. A plurality of cutting elements inserts are arranged in generally circumferential rows on the cutter. At least one scraper cutting element is secured at least partially to the heel surface of the cutter. The scraper cutting element includes an outermost surface, generally aligned with the gage surface of the cutter, that defines a plow edge or point for shearing engagement with the sidewall of the borehole while redirecting cuttings up the borehole.

    INSERTS AND COMPACTS HAVING COATED OR ENCRUSTED DIAMOND PARTICLES
    7.
    发明公开
    INSERTS AND COMPACTS HAVING COATED OR ENCRUSTED DIAMOND PARTICLES 审中-公开
    切削刀片和契约用涂-Or缀满钻石

    公开(公告)号：EP1047858A1

    公开(公告)日：2000-11-02

    申请号：EP99900377.5

    申请日：1999-01-04

    申请人： Dresser Industries Inc.

    发明人： BOYCE, James, Edward ,  BEATON, Michael, Steve ,  MITTAN, Richard, David

    IPC分类号： E21B10/52

    CPC分类号： E21B10/52

    摘要： The improved insert for a ground engaging tool, with a plurality of sockets for receiving a respective insert comprises a body having first and second portions and first and second zones. The first zone may consist of tungsten carbide and metallic cobalt, with preselected dimensions adapted for press fitting within a respective socket of the ground engaging tool. The second body portion may define an earth engaging portion. The second zone may consist of encrusted diamond pellets, tungsten carbide and metallic cobalt, fused together. The first and second zones may be fused together with the first zone being substantially free of encrusted diamond pellets.

    Earth-boring bit having shear-cutting heel elements
    10.
    发明公开
    Earth-boring bit having shear-cutting heel elements 失效
    Erdbohrmeissel mit Umfangsscherelementen

    公开(公告)号：EP0747566A1

    公开(公告)日：1996-12-11

    申请号：EP96304207.2

    申请日：1996-06-06

    申请人： BAKER HUGHES INCORPORATED

    发明人： Scott, Danny E. ,  Pessier, Rudolf C.O. ,  Isbell, Matthew R. ,  Besson, Alain ,  Meany, Nigel

    IPC分类号： E21B10/52

    CPC分类号： E21B10/5673 ,  E21B10/52 ,  E21B10/5676 ,  E21B10/5735 ,  E21B17/1092

    摘要： An earth-boring bit has a bit body and at least one cantilevered bearing shaft depending inwardly and downwardly from the bit body. A cutter is mounted for rotation on the bearing shaft and includes a plurality of cutting elements arranged in generally circumferential rows including an outer or heel row of cutting elements. At least one of the cutting elements in the heel row has an outermost surface at least partially formed of super-hard material that defines a cutting edge for shearing engagement with the sidewall of the borehole as the cutters roll and slide over the bottom of the borehole during drilling operations.

    摘要翻译： 钻头具有一个位体，并且至少一个悬臂轴承轴从钻头体向内和向下偏移。 安装有用于在轴承轴上旋转的切割器，并且包括多个切割元件，所述多个切割元件布置成大致圆周的行，包括外部或后排的切割元件。 脚跟行中的至少一个切割元件具有至少部分由超硬材料形成的最外表面，该超硬材料限定用于与钻孔的侧壁剪切接合的切割刃，因为切割器在钻孔底部滚动并滑动 在钻井作业中。