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    Methods to repair worn or eroded PDC cutters, cutters so repaired, and use of repaired PDC cutters in drill bits or other tools
    1.
    发明授权
    Methods to repair worn or eroded PDC cutters, cutters so repaired, and use of repaired PDC cutters in drill bits or other tools 有权
    修复磨损或腐蚀的PDC刀具，如此修理的刀具以及在钻头或其他工具中使用修理的PDC刀具的方法

    公开(公告)号：US09375827B2

    公开(公告)日：2016-06-28

    申请号：US14139302

    申请日：2013-12-23

    申请人： Varel International Ind., L.P.

    发明人： Marvin Windsor Amundsen ,  Charles Daniel Johnson

    IPC分类号： B24D18/00 ,  E21B10/573 ,  E21B10/567 ,  E21B10/56

    CPC分类号： B24D18/0054 ,  E21B10/567 ,  E21B10/5735 ,  E21B2010/561

    摘要： A repaired polycrystalline diamond cutter and method for fabricating the same. The cutter includes a damaged substrate that includes at least one void therein, a polycrystalline diamond table coupled to the damaged substrate, and a paste compound disposed within the voids formed about the damaged substrate. The damaged substrate and the paste compound collectively form a full circumference. The method includes obtaining a damaged cutter that includes a polycrystalline diamond table coupled to a damaged substrate having at least one void formed therein, applying a paste compound within the at least one void, melting the paste compound via induction heating, bonding the paste compound to the substrate and forming a processed PDC cutter, and grinding at least a portion of the paste compound from the processed PDC cutter to form the repaired cutter.

    摘要翻译： 一种修复的多晶金刚石刀具及其制造方法。 切割器包括损坏的基底，其中包括至少一个空隙，与损坏的基底相连的多晶金刚石台，以及设置在形成在受损的基底周围的空隙内的糊状化合物。 受损的基材和糊料化合物共同形成整周。 该方法包括获得损伤的切割器，其包括结合到其上形成有至少一个空隙的受损基材的多晶金刚石台，在所述至少一个空隙内施加糊料化合物，通过感应加热熔化所述浆料化合物， 并且形成经处理的PDC切割器，并且从处理的PDC切割器研磨至少一部分糊状化合物以形成修复的切割器。

    Method for repairing or reinforcing cutter pockets of a drill bit
    2.
    发明授权
    Method for repairing or reinforcing cutter pockets of a drill bit 有权
    修理或加固钻头刀柄的方法

    公开(公告)号：US09289864B2

    公开(公告)日：2016-03-22

    申请号：US13766640

    申请日：2013-02-13

    申请人： Varel International Ind., L.P.

    发明人： Charles Daniel Johnson ,  Marvin Windsor Amundsen

    IPC分类号： B23K10/02 ,  B23P15/28 ,  B23P6/00 ,  E21B10/46 ,  B23P25/00 ,  E21B10/55

    CPC分类号： B23P15/28 ,  B23P6/00 ,  B23P25/00 ,  E21B10/46 ,  E21B10/55 ,  Y10T29/49737 ,  Y10T29/49742

    摘要： A method for forming pockets of a drill bit includes inserting a displacement plug in a cutter pocket defined by a substrate of a drill bit. A hardfacing material is applied to the substrate and the displacement plug using a plasma arc welding torch. The heat from the plasma arc welding torch reduces an oxide layer on the outer surface of the displacement plug, and the molten hardfacing material flows over the displacement plug and wets against the displacement plug. The displacement plug is then removed to reveal a final cutter pocket configured to receive a cutter compact. The cutter compact is secured to the final cutter pocket by brazing.

    摘要翻译： 用于形成钻头穴的方法包括将位移塞插入由钻头的基底限定的刀具槽中。 使用等离子体电弧焊炬将表面材料施加到基板和位移塞。 来自等离子体电弧焊炬的热量减少位移塞的外表面上的氧化物层，并且熔融的表面硬化材料流过位移塞并润湿位移塞。 然后移除位移塞，以露出配置成接收切割器紧凑件的最终切割器凹口。 刀具紧固件通过钎焊固定到最终刀具槽。

    METHOD FOR REPAIRING OR REINFORCING CUTTER POCKETS OF A DRILL BIT
    4.
    发明申请
    METHOD FOR REPAIRING OR REINFORCING CUTTER POCKETS OF A DRILL BIT 有权
    修复或加固钻头切割器口袋的方法

    公开(公告)号：US20130206483A1

    公开(公告)日：2013-08-15

    申请号：US13766640

    申请日：2013-02-13

    申请人： Varel International Ind., L.P.

    发明人： Charles Daniel Johnson ,  Marvin Windsor Amundsen

    IPC分类号： B23P6/00 ,  B23P25/00 ,  E21B10/46

    CPC分类号： B23P15/28 ,  B23P6/00 ,  B23P25/00 ,  E21B10/46 ,  E21B10/55 ,  Y10T29/49737 ,  Y10T29/49742

    摘要： A method for forming pockets of a drill bit includes inserting a displacement plug in a cutter pocket defined by a substrate of a drill bit. A hardfacing material is applied to the substrate and the displacement plug using a plasma arc welding torch. The heat from the plasma arc welding torch reduces an oxide layer on the outer surface of the displacement plug, and the molten hardfacing material flows over the displacement plug and wets against the displacement plug. The displacement plug is then removed to reveal a final cutter pocket configured to receive a cutter compact. The cutter compact is secured to the final cutter pocket by brazing.

    摘要翻译： 用于形成钻头穴的方法包括将位移塞插入由钻头的基底限定的刀具槽中。 使用等离子体电弧焊炬将表面材料施加到基板和位移塞。 来自等离子体电弧焊炬的热量减少位移塞的外表面上的氧化物层，并且熔融的表面硬化材料流过位移塞并润湿位移塞。 然后移除位移塞，以露出配置成接收切割器紧凑件的最终切割器凹口。 刀具紧固件通过钎焊固定到最终刀具槽。

    Use of tungsten carbide tube rod to hard-face PDC matrix
    6.
    发明授权
    Use of tungsten carbide tube rod to hard-face PDC matrix 有权
    使用碳化钨管棒硬化PDC基体

    公开(公告)号：US09435158B2

    公开(公告)日：2016-09-06

    申请号：US13649830

    申请日：2012-10-11

    申请人： Varel International Ind., L.P.

    发明人： Charles Daniel Johnson

    IPC分类号： E21B10/54 ,  E21B10/42 ,  E21B17/10 ,  B22F7/06 ,  C22C29/06 ,  C22C29/08 ,  C22C1/05 ,  C22C1/10 ,  C22C29/12 ,  C22C29/16

    CPC分类号： E21B10/54 ,  B22F7/06 ,  C22C1/051 ,  C22C1/1036 ,  C22C29/06 ,  C22C29/08 ,  C22C29/12 ,  C22C29/16 ,  C22C2204/00 ,  E21B10/42 ,  E21B17/1085

    摘要： A hardfaced infiltrated matrix downhole tool and a method for hardfacing such items. The hardfaced infiltrated matrix downhole tool includes a body, an intermediate base coat coupled to at least a portion of the surface of the body, and a hardfacing material coupled to at least a portion of the intermediate base coat. The body is composed of at least a carbide material and an infiltrating binder material. The intermediate base coat bonds to the surface of the body and to the hardfacing material. The method includes obtaining an infiltrated matrix downhole tool, applying and bonding the intermediate base coat to at least a portion of the surface of the infiltrated matrix downhole tool, and applying and bonding the hardfacing material to at least a portion of the intermediate base coat.

    摘要翻译： 一种硬化渗透的矩阵井下工具和一种用于表面处理这些物品的方法。 硬化渗透的矩阵井下工具包括主体，联接到主体表面的至少一部分的中间基底涂层以及耦合到中间基底涂层的至少一部分的表面硬化材料。 身体至少由碳化物材料和渗透粘合剂材料组成。 中间基底涂层结合到身体的表面和表面硬化材料。 该方法包括获得渗透的井下工具，将中间基底涂层施加并粘合到渗透的基体井下工具的表面的至少一部分上，以及将表面硬化材料施加并粘合到中间基底涂层的至少一部分上。