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    IMPREGNATED DRILL BIT
    21.
    发明申请
    IMPREGNATED DRILL BIT 审中-公开
    被打破的钻头

    公开(公告)号：WO2009140121A3

    公开(公告)日：2010-04-01

    申请号：PCT/US2009043060

    申请日：2009-05-07

    Applicant: SMITH INTERNATIONAL ,  DURAIRAJAN BALA ,  FULENCHEK JONAN ,  LOCKWOOD GREGORY T

    Inventor： DURAIRAJAN BALA ,  FULENCHEK JONAN ,  LOCKWOOD GREGORY T

    IPC: E21B10/46 ,  E21B10/50 ,  E21B10/52

    CPC classification number: E21B10/46 ,  E21B10/54 ,  E21B10/602

    Abstract: A drill bit that includes a body having a lower end face for engaging a rock formation, the end face having a plurality of raised ribs extending from the face of the bit body and separated by a plurality of channels therebetween; at least one of the plurality of ribs having a varying width along at least a portion of a rib height is disclosed.

    Abstract translation: 一种钻头，包括具有用于接合岩层的下端面的主体，所述端面具有从所述钻头体的所述表面延伸并由其间的多个通道分开的多个凸肋; 公开了沿着肋高度的至少一部分具有变化宽度的多个肋中的至少一个。

    DIAMOND IMPREGNATED BITS AND METHOD OF USING AND MANUFACTURING THE SAME
    23.
    发明申请
    DIAMOND IMPREGNATED BITS AND METHOD OF USING AND MANUFACTURING THE SAME 审中-公开
    金刚石印刷的位置及其使用和制造方法

    公开(公告)号：WO2009140122A3

    公开(公告)日：2010-04-01

    申请号：PCT/US2009043061

    申请日：2009-05-07

    Applicant: SMITH INTERNATIONAL ,  LOCKWOOD GREGORY T ,  FULENCHEK JONAN

    Inventor： LOCKWOOD GREGORY T ,  FULENCHEK JONAN

    IPC: E21B10/46 ,  E21B10/50 ,  E21B10/52

    CPC classification number: E21B10/46 ,  B22F7/02 ,  B22F2005/002 ,  C22C26/00 ,  C22C29/00 ,  C22C29/08 ,  E21B10/55

    Abstract: A drill bit that includes a body having a lower end face for engaging a rock formation, the end face having a plurality of raised ribs extending from the face of the bit body and separated by a plurality of channels therebetween; and at least one of the plurality of ribs having a cutting portion of the at least one rib comprising a first diamond impregnated matrix material and at least a portion of a gage surface region thereof comprising a second diamond impregnated matrix material, the gage surface region backed by a third matrix material is disclosed.

    Abstract translation: 一种钻头，包括具有用于接合岩层的下端面的主体，所述端面具有从所述钻头体的所述表面延伸并由其间的多个通道分开的多个凸肋; 并且所述多个肋中的至少一个肋具有所述至少一个肋的切割部分，所述切割部分包括第一金刚石浸渍基质材料，并且其至少一部分表面区域包含第二金刚石浸渍基质材料，所述表面区域支撑 公开了第三种基质材料。

    Method of manufacturing a drill bit
    26.
    发明专利
    Method of manufacturing a drill bit 未知

    公开(公告)号：GB2494810A

    公开(公告)日：2013-03-20

    申请号：GB201222451

    申请日：2009-05-07

    Applicant: SMITH INTERNATIONAL

    Inventor： LOCKWOOD GREGORY T ,  ZHANG YOUHE ,  SHEN YUELIN

    IPC: E21B10/42 ,  E21B10/55

    Abstract: A method of manufacturing a drill bit that includes a bit body having a plurality of blades extending radially therefrom comprises adhering a first matrix material to at least a portion of a mould cavity corresponding to an outer surface of the bit body, loading a second matrix material into the other portions of the mould cavity and heating the mould contents to forma matrix body drill bit.

    Matrix powder for matrix body fixed cutter bits
    28.
    发明专利
    Matrix powder for matrix body fixed cutter bits 未知

    公开(公告)号：GB2490049B

    公开(公告)日：2013-01-09

    申请号：GB201208391

    申请日：2012-05-14

    Applicant: SMITH INTERNATIONAL

    Inventor： LOCKSTEDT ALAN W ,  LOCKWOOD GREGORY T

    IPC: C01B32/949 ,  C22C19/07 ,  C22C29/08

    Abstract: A drill bit is disclosed that has a bit body with a plurality of blades extending radially therefrom and at least one cutting element for engaging a formation disposed on at least one of the plurality of blades. At least a portion of the plurality of blades has a first matrix region made of a plurality of first carbide particles separated by a first binder phase, wherein the plurality of first carbide particles have a mean free path of at least 40 microns.

    Matrix powder for drill bit body
    29.
    发明专利
    Matrix powder for drill bit body 未知

    公开(公告)号：GB2490049A

    公开(公告)日：2012-10-17

    申请号：GB201208391

    申请日：2012-05-14

    Applicant: SMITH INTERNATIONAL

    Inventor： LOCKSTEDT ALAN W ,  LOCKWOOD GREGORY T

    IPC: C01B32/949 ,  C22C19/07 ,  C22C29/08

    Abstract: A matrix powder for forming a matrix drill bit body comprises a plurality of carbide particles having a particle size distribution of ±20% or less of a median particle size and a plurality of metal binder particles. The metal binder may comprise 8 to 12 weight % of the matrix powder. Optionally, the carbide may be one of cast tungsten carbide, cemented tungsten carbide or macrocrystalline tungsten carbide. Preferably, the mean particle size of the carbide particles ranges from 50 to 840 microns. A drill bit comprises a bit body having a plurality of blades 10, at least a portion of the plurality of blades comprises a first matrix region (10a, Fig. 1b), wherein the first matrix region comprises a plurality of carbide particles, of narrow size distribution, separated by a binder phase. The carbide particles have a mean free path of at least 40 microns.

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