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    EARTH-BORING METAL MATRIX ROTARY DRILL BIT
    43.
    发明申请
    EARTH-BORING METAL MATRIX ROTARY DRILL BIT 审中-公开
    接地金属矩阵旋转钻头

    公开(公告)号：US20100193255A1

    公开(公告)日：2010-08-05

    申请号：US12534810

    申请日：2009-08-03

    申请人： John H. Stevens ,  Jimmy W. Eason

    发明人： John H. Stevens ,  Jimmy W. Eason

    IPC分类号： E21B10/54 ,  E21B10/42 ,  E21B10/55

    CPC分类号： E21B10/54 ,  B22F3/26 ,  B22F7/06 ,  B22F2005/001 ,  B22F2998/10 ,  B22F3/093

    摘要： An earth-boring rotary drill bit includes a bit body, with a first region configured to carry a plurality of cutters for engaging a subterranean earth formation of a first particle-matrix composite material and a second region configured for attachment to a drill string of a second particle-matrix composite material having a second material composition, and an annular shank extending from the second region. Each of the first particle-matrix composite material and second particle-matrix composite material has a cast microstructure. A method of making an earth-boring rotary drill bit includes providing a plurality of hard particles in a mold to define a particle precursor; infiltrating the particle precursor sequentially with a plurality of molten matrix materials to form a corresponding plurality of layers, each comprising a particle-matrix mixture; and cooling the plurality of particle-matrix mixtures to solidify the matrix materials and form the bit body.

    摘要翻译： 钻头旋转钻头包括钻头体，第一区域构造成承载多个切割器，用于接合第一颗粒 - 基质复合材料的地下地层，以及第二区域，所述第二区域构造成用于附接到钻柱 具有第二材料组合物的第二颗粒 - 基质复合材料和从第二区域延伸的环形柄。 第一颗粒 - 基质复合材料和第二颗粒 - 基质复合材料中的每一种具有铸态微结构。 制造钻地旋转钻头的方法包括在模具中提供多个硬颗粒以限定颗粒前体; 用多个熔融基体材料顺序地渗透颗粒前体以形成相应的多个层，每个层包含颗粒 - 基质混合物; 并冷却多个颗粒 - 基质混合物以固化基质材料并形成钻头体。

    BONDING AGENTS FOR IMPROVED SINTERING OF EARTH-BORING TOOLS, METHODS OF FORMING EARTH-BORING TOOLS AND RESULTING STRUCTURES
    44.
    发明申请
    BONDING AGENTS FOR IMPROVED SINTERING OF EARTH-BORING TOOLS, METHODS OF FORMING EARTH-BORING TOOLS AND RESULTING STRUCTURES 有权
    用于改进接地工具烧结的接合剂，形成接地工具和结构的方法

    公开(公告)号：US20090031863A1

    公开(公告)日：2009-02-05

    申请号：US11831814

    申请日：2007-07-31

    申请人： Nicholas J. Lyons ,  Jimmy W. Eason ,  Redd H. Smith ,  John H. Stevens

    发明人： Nicholas J. Lyons ,  Jimmy W. Eason ,  Redd H. Smith ,  John H. Stevens

    IPC分类号： B21K5/04

    CPC分类号： E21B10/567 ,  B22F7/062 ,  B22F2005/001 ,  B22F2005/002 ,  Y10T428/12229 ,  Y10T428/12493 ,  Y10T428/12896 ,  Y10T428/12944

    摘要： Methods for forming earth-boring tools include providing a metal or metal alloy bonding agent at an interface between a first element and a second element and sintering the first element, the second element, and the boding agent to form a bond between the first element and the second element at the interface. The methods may be used, for example, to bond together portions of a body of an earth-boring tool (which may facilitate, for example, the formation of cutting element pockets) or to bond cutting elements to a body of an earth-boring tool (e.g., a bit body of a fixed-cutter earth-boring drill bit or a cone of a roller cone earth-boring drill bit). At least partially formed earth-boring tools include a metal or metal alloy bonding agent at an interface between two or more elements, at least one of which may comprise a green or brown structure.

    摘要翻译： 用于形成钻孔工具的方法包括在第一元件和第二元件之间的界面处提供金属或金属合金粘结剂，并烧结第一元件，第二元件和引导剂以形成第一元件和 接口的第二个元素。 这些方法可以用于例如将钻孔工具的主体的部分（其可以促进例如切割元件凹坑的形成）或将切割元件接合到地球钻孔的主体上 工具（例如，固定刀具钻孔钻头的一个主体或滚子锥形钻孔钻头的锥体）。 至少部分形成的钻孔工具在两个或更多个元件之间的界面处包括金属或金属合金粘合剂，其中至少一个可以包括绿色或棕色结构。

    Bonding agents for improved sintering of earth-boring tools, methods of forming earth-boring tools and resulting structures
    46.
    发明授权
    Bonding agents for improved sintering of earth-boring tools, methods of forming earth-boring tools and resulting structures 有权
    用于改善钻孔工具烧结的粘结剂，形成钻孔工具和所得结构的方法

    公开(公告)号：US08268452B2

    公开(公告)日：2012-09-18

    申请号：US11831814

    申请日：2007-07-31

    申请人： Nicholas J. Lyons ,  Jimmy W. Eason ,  Redd H. Smith ,  John H. Stevens

    发明人： Nicholas J. Lyons ,  Jimmy W. Eason ,  Redd H. Smith ,  John H. Stevens

    IPC分类号： B32B15/04 ,  B32B15/16 ,  B32B9/00 ,  B22F7/00 ,  B22F7/06 ,  E21B10/00 ,  E21B10/08 ,  E21B10/36

    CPC分类号： E21B10/567 ,  B22F7/062 ,  B22F2005/001 ,  B22F2005/002 ,  Y10T428/12229 ,  Y10T428/12493 ,  Y10T428/12896 ,  Y10T428/12944

    摘要： Methods for forming earth-boring tools include providing a metal or metal alloy bonding agent at an interface between a first element and a second element and sintering the first element, the second element, and the boding agent to form a bond between the first element and the second element at the interface. The methods may be used, for example, to bond together portions of a body of an earth-boring tool (which may facilitate, for example, the formation of cutting element pockets) or to bond cutting elements to a body of an earth-boring tool (e.g., a bit body of a fixed-cutter earth-boring drill bit or a cone of a roller cone earth-boring drill bit). At least partially formed earth-boring tools include a metal or metal alloy bonding agent at an interface between two or more elements, at least one of which may comprise a green or brown structure.

    摘要翻译： 用于形成钻孔工具的方法包括在第一元件和第二元件之间的界面处提供金属或金属合金粘结剂，并烧结第一元件，第二元件和引导剂以形成第一元件和 接口的第二个元素。 这些方法可以用于例如将钻孔工具的主体的部分（其可以促进例如切割元件凹坑的形成）或将切割元件结合到钻孔的主体上 工具（例如，固定刀具钻孔钻头的一个主体或滚子锥形钻孔钻头的锥体）。 至少部分形成的钻孔工具在两个或更多个元件之间的界面处包括金属或金属合金粘合剂，其中至少一个可以包括绿色或棕色结构。

    Carburized monotungsten and ditungsten carbide eutectic particles, materials and earth-boring tools including such particles, and methods of forming such particles, materials, and tools
    47.
    发明授权
    Carburized monotungsten and ditungsten carbide eutectic particles, materials and earth-boring tools including such particles, and methods of forming such particles, materials, and tools 有权
    渗碳的单钨和二次碳化钨共晶颗粒，包括这种颗粒的材料和钻孔工具以及形成这种颗粒，材料和工具的方法

    公开(公告)号：US08220566B2

    公开(公告)日：2012-07-17

    申请号：US12261730

    申请日：2008-10-30

    申请人： Jimmy W. Eason ,  John H. Stevens ,  James L. Overstreet

    发明人： Jimmy W. Eason ,  John H. Stevens ,  James L. Overstreet

    IPC分类号： E21B10/36

    CPC分类号： C22C1/1005 ,  B22F2005/001 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  E21B10/00 ,  E21B10/46 ,  B22F3/26 ,  B22F7/06 ,  C22C29/08 ,  B22F3/02 ,  B22F3/10 ,  B22F2201/30 ,  B22F2207/07 ,  B22F2202/15

    摘要： Earth-boring tools for drilling subterranean formations include a particle-matrix composite material comprising a plurality of at least partially carburized monotungsten carbide and ditungsten carbide eutectic particles dispersed throughout a matrix material. In some embodiments, the particles are at least substantially fully carburized monotungsten carbide and ditungsten carbide eutectic particles. In further embodiments, the particles are generally spherical or at least substantially spherical. Methods of forming such particles include exposing a plurality of monotungsten carbide and ditungsten carbide eutectic particles to a gas containing carbon. Methods of manufacturing such tools include providing a plurality of at least partially carburized monotungsten carbide and ditungsten carbide eutectic particles or at least substantially completely carburized monotungsten carbide and ditungsten carbide eutectic particles within a matrix material.

    摘要翻译： 用于钻探地下地层的钻孔工具包括颗粒 - 基质复合材料，其包含分散在基体材料中的多个至少部分渗碳的单碳化钨和二碳化钨共晶颗粒。 在一些实施方案中，颗粒是至少基本上完全渗碳的单碳化钨和二碳化钨共晶颗粒。 在另外的实施方案中，颗粒通常为球形或至少基本上为球形。 形成这种颗粒的方法包括将多个单碳化钨和二碳化钨共晶颗粒暴露于含碳气体。 制造这种工具的方法包括在基体材料内提供多个至少部分渗碳的单碳化钨和二碳化钨共晶颗粒或至少基本上完全渗碳的单碳化钨和二碳化钨共晶颗粒。

    METHODS OF FORMING EARTH-BORING ROTARY DRILL BITS
    49.
    发明申请
    METHODS OF FORMING EARTH-BORING ROTARY DRILL BITS 审中-公开
    形成地球旋转钻头的方法

    公开(公告)号：US20100276205A1

    公开(公告)日：2010-11-04

    申请号：US12831608

    申请日：2010-07-07

    申请人： James A. Oxford ,  Jimmy W. Eason ,  Redd H. Smith ,  John H. Stevens ,  Nicholas J. Lyons

    发明人： James A. Oxford ,  Jimmy W. Eason ,  Redd H. Smith ,  John H. Stevens ,  Nicholas J. Lyons

    IPC分类号： E21B10/14 ,  B22F7/04 ,  B22F1/00

    CPC分类号： E21B10/00 ,  B22F7/062 ,  B22F7/08 ,  B22F2003/245 ,  B22F2005/001 ,  B22F2005/002 ,  B22F2998/10 ,  C22C29/08 ,  E21B10/62 ,  B22F3/1021 ,  B22F3/162

    摘要： Methods of forming earth-boring rotary drill bits include providing a bit body, providing a shank that is configured for attachment to a drill string, and attaching the shank to the bit body. Providing a bit body includes providing a green powder component having a first region having a first composition and a second region having a second, different composition, and at least partially sintering the green powder component. Other methods include providing a powder mixture, pressing the powder mixture to form a green component, and sintering the green component to a final density. A shank is provided that includes an aperture, and a feature is machined in a surface of the bit body. The aperture is aligned with the feature, and a retaining member is inserted through the aperture. An earth-boring bit includes a bit body comprising a particle-matrix composite material including a plurality of hard particles dispersed throughout a matrix material. A shank is attached to the bit body using a retaining member.

    摘要翻译： 形成钻孔旋转钻头的方法包括提供钻头体，提供构造成用于附接到钻柱的柄，以及将柄连接到钻头体上。 提供有点体包括提供具有第一组分的第一区域和具有第二不同组成的第二区域并且至少部分地烧结绿色粉末组分的绿色粉末组分。 其他方法包括提供粉末混合物，挤压粉末混合物以形成绿色组分，并将绿色组分烧结至最终密度。 提供了一种柄，其包括孔，并且特征被加工在钻头体的表面中。 孔与该特征对准，并且保持构件插入穿过该孔。 一种钻孔钻头包括一个包括一颗粒基复合材料的钻头体，该复合材料包括分散在基体材料中的多个硬颗粒。 使用保持构件将柄连接到钻头体上。

    Methods of forming earth-boring rotary drill bits
    50.
    发明授权
    Methods of forming earth-boring rotary drill bits 有权
    形成钻孔旋转钻头的方法

    公开(公告)号：US07802495B2

    公开(公告)日：2010-09-28

    申请号：US11271153

    申请日：2005-11-10

    申请人： James A. Oxford ,  Jimmy W. Eason ,  Redd H. Smith ,  John H. Stevens ,  Nicholas J. Lyons

    发明人： James A. Oxford ,  Jimmy W. Eason ,  Redd H. Smith ,  John H. Stevens ,  Nicholas J. Lyons

    IPC分类号： B21K5/04 ,  E21B10/54

    CPC分类号： E21B10/00 ,  B22F7/062 ,  B22F7/08 ,  B22F2003/245 ,  B22F2005/001 ,  B22F2005/002 ,  B22F2998/10 ,  C22C29/08 ,  E21B10/62 ,  B22F3/1021 ,  B22F3/162

    摘要： Methods of forming earth-boring rotary drill bits include providing a bit body, providing a shank that is configured for attachment to a drill string, and attaching the shank to the bit body. Providing a bit body includes providing a green powder component having a first region having a first composition and a second region having a second, different composition, and at least partially sintering the green powder component. Other methods include providing a powder mixture, pressing the powder mixture to form a green component, and sintering the green component to a final density. A shank is provided that includes an aperture, and a feature is machined in a surface of the bit body. The aperture is aligned with the feature, and a retaining member is inserted through the aperture. An earth-boring bit includes a bit body comprising a particle-matrix composite material including a plurality of hard particles dispersed throughout a matrix material. A shank is attached to the bit body using a retaining member.

    摘要翻译： 形成钻孔旋转钻头的方法包括提供钻头体，提供构造成用于附接到钻柱的柄，以及将柄连接到钻头体上。 提供有点体包括提供具有第一组分的第一区域和具有第二不同组成的第二区域并且至少部分地烧结绿色粉末组分的绿色粉末组分。 其他方法包括提供粉末混合物，挤压粉末混合物以形成绿色组分，并将绿色组分烧结至最终密度。 提供了一种柄，其包括孔，并且特征被加工在钻头体的表面中。 孔与该特征对准，并且保持构件插入穿过该孔。 一种钻孔钻头包括一个包括一颗粒基复合材料的钻头体，该复合材料包括分散在基体材料中的多个硬颗粒。 使用保持构件将柄连接到钻头体上。