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    IMPREGNATED ROTARY DRAG BIT AND RELATED METHODS
    6.
    发明申请
    IMPREGNATED ROTARY DRAG BIT AND RELATED METHODS 审中-公开
    引入轮转位和相关方法

    公开(公告)号：WO2009059088A3

    公开(公告)日：2009-11-12

    申请号：PCT/US2008081927

    申请日：2008-10-31

    Applicant: BAKER HUGHES INC ,  MCCLAIN ERIC E ,  SKEEM MARCUS R

    Inventor： MCCLAIN ERIC E ,  SKEEM MARCUS R

    IPC: E21B10/43 ,  E21B10/54

    CPC classification number: E21B10/54 ,  E21B10/16 ,  E21B10/43

    Abstract: A drill bit (100) is provided that employs a plurality of discrete, post-like, abrasive, particulate-impregnated cutting structures (118) extending upwardly from the bit face. The cutting structures may be disposed on abrasive, particulate-impregnated blades (108) that also define a plurality of fluid passages (116) on the bit face (106). One or more of the cutting structures may include outermost ends that exhibit a cross-sectional geometry that is elongated in a direction along a defined axis. The cutting structures may be oriented such that the defined axis (132) is neither coplanar with, nor parallel to, an intended rotational path of the at least one discrete cutting structure during operation of the bit. In one embodiment, the cutting structure is oriented such that the defined axis is at an acute angle relative to a tangent of the intended rotational path for the associated cutting structure. Other or different features may include, for example, additional, differently configured cutting elements.

    Abstract translation: 提供了一种钻头（100），其采用从钻头面向上延伸的多个离散的，类似后，磨料的颗粒浸渍的切割结构（118）。 切割结构可以设置在研磨性颗粒浸渍的刀片（108）上，刀片也在钻头面（106）上限定多个流体通道（116）。 一个或多个切割结构可以包括表现出沿着限定的轴线的方向伸长的横截面几何形状的最外端。 切割结构可以被定向成使得在钻头的操作期间，限定的轴线（132）既不与至少一个离散切割结构的预期旋转路径共面，也不平行。 在一个实施例中，切割结构被定向成使得限定的轴线相对于相关切割结构的预期旋转路径的切线成锐角。 其他或不同的特征可以包括例如附加的不同构造的切割元件。

    ROTARY DRAG BIT
    8.
    发明专利
    ROTARY DRAG BIT 未知

    公开(公告)号：CA2675070C

    公开(公告)日：2012-05-29

    申请号：CA2675070

    申请日：2008-01-24

    Applicant: BAKER HUGHES INC

    Inventor： SNELL LANE E ,  GAVIA DAVID ,  HOINES JASON E ,  HANFORD RYAN J ,  ISBELL MATTHEW R ,  MCCLAIN ERIC E ,  DOSTER MICHAEL L

    IPC: E21B10/43

    Abstract: A rotary drag bit (110) includes a primary cutter row (143) comprising at least one primary" cutter (11) and a multiple backup cutter, group (153). The multiple backup cutter group comprises a first and second trailing cutter row (154, 155), each comprising at least one cutter positioned to follow the at least one primary cutter. The rotary drag bit life is extended by the multiple backup cutter group, making the bit more durable and extending the life of the cutters. Further, the cutters of the multiple backup cutter group are configured to selectively engage a subterranean formation material being drilled, providing improved bit life and reduced stress upon the cutters. Other embodiments of rotary drag bits are provided.

    REAMING TOOL SUITABLE FOR RUNNING ON CASING OR LINER AND METHOD OF REAMING
    9.
    发明专利
    REAMING TOOL SUITABLE FOR RUNNING ON CASING OR LINER AND METHOD OF REAMING 未知

    公开(公告)号：CA2651823A1

    公开(公告)日：2007-11-22

    申请号：CA2651823

    申请日：2007-05-14

    Applicant: BAKER HUGHES INC

    Inventor： LUND JEFFREY B ,  THOMAS JOHN C ,  CLARK LASTER I ,  MCCLAIN ERIC E

    IPC: E21B10/26 ,  E21B10/43 ,  E21B17/14

    Abstract: A reaming tool (10) includes a tubular body (12) having a nose portion (1 4) with a concave center. A plurality of blades (20) defining junk slots (24 ) therebetween extend axially behind the nose (14) and taper outwardly from the exterior of the tubular body. Rotationally leading edges of the blades ( 20) carry a plurality of cutting elements (30) from the axially leading ends . Selected surfaces and edges of the bear tungsten carbide, which may compri se crushed tungsten carbide. The shell of the nose (14) is configured to ens ure drill out from the centerline thereof toward the side wall (16) of the t ubular body. A method of drilling out a reaming tool is also disclosed.

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