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366 条记录 (耗时 0.018 秒)

    Packer mill
    71.
    发明公开
    Packer mill 失效
    封隔器磨

    公开(公告)号：EP0185466A1

    公开(公告)日：1986-06-25

    申请号：EP85308374.9

    申请日：1985-11-18

    申请人： SMITH INTERNATIONAL, INC.

    发明人： Furse, John Howard

    IPC分类号： E21B31/16 ,  E21B31/20

    CPC分类号： E21B31/16 ,  E21B31/20

    摘要： A milling tool for removing a packer from a well includes a releasable catcher for supporting remains of a milled packer (51). The catcher has a sleeve (26) with deflectable fingers (29) which normally support the remains of the packer. If the packer should become stuck, the fingers (29) press on a release ring (39) which has a ramp (43) that engages a complementary ramp (42) on a shoulder (41) on the mandrel (14) of the mill. The ramps cam the ring outwardly until the ring breaks in tension at a deliberately weakened location (52). This releases the sleeve (26) to slide downwardly and permit the fingers (29) to deflect inwardly into a recess (23). thereby clearing the bore of the stuck packer.

    Rock bit cutter cones having metallurgically bonded cutter inserts
    72.
    发明公开
    Rock bit cutter cones having metallurgically bonded cutter inserts 失效
    Konisches Gesteinsschneidwerkzeug mit metallisch gebundenenSchneideinsätzen。

    公开(公告)号：EP0142941A1

    公开(公告)日：1985-05-29

    申请号：EP84307183.8

    申请日：1984-10-18

    申请人： SMITH INTERNATIONAL, INC.

    发明人： Salesky, William Jeffrey ,  Ecer, Gunes Mustafa

    IPC分类号： E21B10/52 ,  E21B10/22 ,  B22F7/08

    CPC分类号： B22F7/064 ,  B22F2005/001 ,  B22F2998/00 ,  E21B10/22 ,  E21B10/52 ,  B22F7/08

    摘要： A rock bit cutter cone (10) for a drill bit (12) is disclosed wherein hard carbide cutter inserts (26) are metallurgically bonded into an interior core (28) of the cone through a cladding (34). The cladding (34) is bonded on to the exterior surface of the core (28) by a powder metallurgy process. The cladding (34) retains the inserts (26) in the core (28). A thin layer or coating (44) of a suitable metal, preferably nickel, is provided on the carbide insert (26) prior to mounting into the core (28). The coating (44) prevents degradation of the carbide through loss of carbon into the core (28) during the powder metallurgy process and accommodates mismatch of thermal expansion between the cutter insert (26) and the core (28). The interior of the cone is formed to provide bearing surfaces (34, 40) either by conventional techniques, or by powder metallurgy processes. Bearing surfaces formed in the interior of the core by powder metallurgy processes may be hard so as to permit an open bearing structure for the drill bit.

    摘要翻译： 公开了一种用于钻头（12）的钻头铣刀锥（10），其中硬质合金刀具刀片（26）通过包层（34）冶金地结合到锥体的内部芯（28）中。 包层（34）通过粉末冶金工艺结合在芯（28）的外表面上。 包层（34）将插入件（26）保持在芯部（28）中。 在安装到芯（28）之前，在碳化物插入件（26）上提供合适的金属（优选镍）的薄层或涂层（44）。 涂层（44）通过在粉末冶金过程期间通过将碳损失到芯（28）中来防止碳化物的降解，并且适应刀片插入件（26）和芯部（28）之间的热膨胀失配。 锥体的内部形成为通过常规技术或通过粉末冶金方法提供轴承表面（34,40）。 通过粉末冶金工艺在芯部内部形成的轴承表面可能是困难的，从而允许用于钻头的开放的轴承结构。

    CEMENTING WHIPSTOCK APPARATUS AND METHODS
    78.
    发明公开
    CEMENTING WHIPSTOCK APPARATUS AND METHODS 审中-公开
    粘接白炽灯装置和方法

    公开(公告)号：EP2817475A1

    公开(公告)日：2014-12-31

    申请号：EP13751961.7

    申请日：2013-02-21

    申请人： Smith International, Inc.

    发明人： DEWEY, Charles H. ,  CAMPBELL, John E. ,  SWADI, Shantanu N. ,  GREGUREK, Philip M.

    IPC分类号： E21B7/08 ,  E21B17/03

    CPC分类号： E21B7/061 ,  E21B17/06 ,  E21B23/04 ,  E21B33/13 ,  E21B33/14

    摘要： A system and method facilitate sidetracking by eliminating one or more trips downhole. A sidetracking system includes a whipstock assembly and a stinger assembly. The stinger assembly has a stinger which extends at least partially through the whipstock assembly. The stinger is coupled to a sub of the sidetracking system by a releasable latch mechanism, such as a shear pin or collet.

    摘要翻译： 系统和方法通过消除一个或多个井下行程来促进侧钻。 侧钻系统包括造斜器组件和托管架组件。 托管架组件具有至少部分地延伸穿过造斜器组件的托管架。 托管通过可释放的锁定机构（例如剪切销或夹头）连接到侧轨系统的子系统。