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    ROTARY DRAG BIT WITH INCREASED BACK RAKE ANGLE GAUGE CUTTER
    1.
    发明申请
    ROTARY DRAG BIT WITH INCREASED BACK RAKE ANGLE GAUGE CUTTER 审中-公开
    具有增加的反向角度角尺切割器的旋转拖轮位

    公开(公告)号：US20080190670A1

    公开(公告)日：2008-08-14

    申请号：US12029197

    申请日：2008-02-11

    申请人： Robert M. Welch ,  Floyd C. Felderhoff ,  Michael L. Doster

    发明人： Robert M. Welch ,  Floyd C. Felderhoff ,  Michael L. Doster

    IPC分类号： E21B10/52

    CPC分类号： E21B10/43

    摘要： A fixed cutter rotary drill bit having gauge cutting elements at large back rake angles are disclosed. The gauge is located at the outer diameter side wall portion of the bit that extends from the cutting end. The gauge and its cutting components contact the side wall of the bore hole during drilling operations. The gauge cutting elements may be configured at a back rake angle in a range of about 40° to 70°.

    摘要翻译： 公开了一种具有大后排前角的量规切割元件的固定式旋转钻头。 该量规位于从切割端延伸的钻头的外径侧壁部分。 测量仪及其切割部件在钻孔操作期间接触钻孔的侧壁。 量规切割元件可以构造在约40°至70°的范围内的后倾角。

    Staggered compact row on same land
    2.
    发明授权
    Staggered compact row on same land 有权
    在同一地方交错排列紧凑的行

    公开(公告)号：US07779936B2

    公开(公告)日：2010-08-24

    申请号：US12237602

    申请日：2008-09-25

    申请人： Floyd C. Felderhoff ,  Robert M. Welch ,  Yolanda V. Morse

    发明人： Floyd C. Felderhoff ,  Robert M. Welch ,  Yolanda V. Morse

    IPC分类号： E21B10/16

    CPC分类号： E21B10/16

    摘要： An earth boring drill bit comprising cones, each cone having a land on its mid portion with at least two rows of compacts that are staggered with respect to adjacent compacts on another row. The compacts of these two rows may also have the same size. The compacts of these two inner rows are closer to each other than to any other compacts on the cone.

    摘要翻译： 一种钻孔钻头，包括锥体，每个锥体在其中部具有至少两排相对于另一排上的相邻压块交错的压块的平台。 这两排的压块也可以具有相同的尺寸。 这两个内排的压块比锥体上的任何其它压块更紧密。

    Staggered Compact Row on Same Land
    3.
    发明申请
    Staggered Compact Row on Same Land 有权
    同一地块交错排列

    公开(公告)号：US20100071963A1

    公开(公告)日：2010-03-25

    申请号：US12237602

    申请日：2008-09-25

    申请人： Floyd C. Felderhoff ,  Robert M. Welch ,  Yolanda V. Morse

    发明人： Floyd C. Felderhoff ,  Robert M. Welch ,  Yolanda V. Morse

    IPC分类号： E21B10/00

    CPC分类号： E21B10/16

    摘要： An earth boring drill bit comprising cones, each cone having a land on its mid portion with at least two rows of compacts that are staggered with respect to adjacent compacts on another row. The compacts of these two rows may also have the same size. The compacts of these two inner rows are closer to each other than to any other compacts on the cone.

    摘要翻译： 一种钻孔钻头，包括锥体，每个锥体在其中部具有至少两排相对于另一排上的相邻压块交错的压块的平台。 这两排的压块也可以具有相同的尺寸。 这两个内排的压块比锥体上的任何其它压块更紧密。

    Methods for applying wear-resistant material to exterior surfaces of earth-boring tools and resulting structures
    4.
    发明授权
    Methods for applying wear-resistant material to exterior surfaces of earth-boring tools and resulting structures 有权
    将耐磨材料应用于镗孔工具和结构结构的外表面的方法

    公开(公告)号：US08104550B2

    公开(公告)日：2012-01-31

    申请号：US11864482

    申请日：2007-09-28

    申请人： James L. Overstreet ,  Michael L. Doster ,  Mark E. Morris ,  Kenneth E. Gilmore ,  Robert M. Welch ,  Danielle V. Roberts

    发明人： James L. Overstreet ,  Michael L. Doster ,  Mark E. Morris ,  Kenneth E. Gilmore ,  Robert M. Welch ,  Danielle V. Roberts

    IPC分类号： E21B10/36

    CPC分类号： E21B10/54 ,  E21B10/43

    摘要： Earth-boring tools include wear-resistant materials disposed in at least one recess formed in an exterior surface of a body thereof. Exposed surfaces of the wear-resistant material are substantially level with exterior surfaces of the body adjacent the wear-resistant material. In some embodiments, recesses may be formed in formation-engaging surfaces of blades of earth-boring rotary tools, adjacent one or more inserts secured to bodies of earth-boring tools, or adjacent one or more cutting elements secured to bodies of earth-boring tools. Methods of forming earth-boring tools include filling one or more recesses formed in an exterior surface of a body with wear-resistant material and causing exposed surfaces of the wear-resistant material to be substantially level with the exterior surface of the body.

    摘要翻译： 钻孔工具包括设置在形成在其本体的外表面中的至少一个凹部中的耐磨材料。 耐磨材料的露出表面与身体的与耐磨材料相邻的外表面基本平齐。 在一些实施例中，凹槽可以形成在钻孔旋转工具的叶片的形成接合表面中，邻近一个或多个插入件固定到钻孔工具的主体，或邻近的一个或多个切割元件固定到镗孔体 工具 形成钻孔工具的方法包括用耐磨材料填充形成在主体的外表面中的一个或多个凹部，并使耐磨材料的暴露表面与主体的外表面基本平齐。

    Drill bits and tools for subterranean drilling
    5.
    发明授权
    Drill bits and tools for subterranean drilling 有权
    钻头和工具用于地下钻孔

    公开(公告)号：US07836979B2

    公开(公告)日：2010-11-23

    申请号：US12260245

    申请日：2008-10-29

    申请人： James C. Green ,  Michael L. Doster ,  Jason E. Hoines ,  Robert M. Welch ,  Danielle V. Roberts

    发明人： James C. Green ,  Michael L. Doster ,  Jason E. Hoines ,  Robert M. Welch ,  Danielle V. Roberts

    IPC分类号： E21B10/42 ,  E21B10/46

    CPC分类号： E21B10/42 ,  E21B10/43

    摘要： A drill bit having a bit body includes a blade face surface on at least one blade extending longitudinally and radially outward over a face of the bit body. The blade face surface of the at least one blade includes a contact zone and a sweep zone. The sweep zone rotationally trails the contact zone with respect to a direction of intended bit rotation about a longitudinal axis of the bit body provides reduce rubbing contact when engaging with a subterranean formation.

    摘要翻译： 具有钻头体的钻头包括在钻头体的表面上纵向和径向向外延伸的至少一个刀片上的刀片表面。 所述至少一个叶片的叶片表面包括接触区域和扫掠区域。 扫掠区域相对于围绕钻头体的纵向轴线的预期钻头旋转的方向旋转地接触接触区域，并且当与地下地层接合时提供减少的摩擦接触。

    DRILL BITS AND TOOLS FOR SUBTERRANEAN DRILLING
    6.
    发明申请
    DRILL BITS AND TOOLS FOR SUBTERRANEAN DRILLING 有权
    钻井钻机和钻井工具

    公开(公告)号：US20090107730A1

    公开(公告)日：2009-04-30

    申请号：US12260245

    申请日：2008-10-29

    申请人： James C. Green ,  Michael L. Doster ,  Jason E. Hoines ,  Robert M. Welch ,  Danielle V. Roberts

    发明人： James C. Green ,  Michael L. Doster ,  Jason E. Hoines ,  Robert M. Welch ,  Danielle V. Roberts

    IPC分类号： E21B10/00

    CPC分类号： E21B10/42 ,  E21B10/43

    摘要： A drill bit having a bit body includes a blade face surface on at least one blade extending longitudinally and radially outward over a face of the bit body. The blade face surface of the at least one blade includes a contact zone and a sweep zone. The sweep zone rotationally trails the contact zone with respect to a direction of intended bit rotation about a longitudinal axis of the bit body provides reduce rubbing contact when engaging with a subterranean formation.

    摘要翻译： 具有钻头体的钻头包括在钻头体的表面上纵向和径向向外延伸的至少一个刀片上的刀片表面。 所述至少一个叶片的叶片表面包括接触区域和扫掠区域。 扫掠区域相对于围绕钻头体的纵向轴线的预期钻头旋转的方向旋转地接触接触区域，并且当与地下地层接合时提供减少的摩擦接触。

    Drill bit with continuously sharp edge cutting elements
    9.
    发明授权
    Drill bit with continuously sharp edge cutting elements 有权
    钻头采用连续尖锐的切割元件

    公开(公告)号：US09540884B2

    公开(公告)日：2017-01-10

    申请号：US14254473

    申请日：2014-04-16

    申请人： Robert M. Welch ,  Eric E. McClain ,  L. Allen Sinor

    发明人： Robert M. Welch ,  Eric E. McClain ,  L. Allen Sinor

    IPC分类号： E21B10/56 ,  E21B10/43

    CPC分类号： E21B10/56 ,  E21B10/43 ,  E21B2010/562

    摘要： A method of producing a drill bit, such as for drilling a well into an earth formation, includes forming a bit body having a plurality of blades. Each of the plurality of blades includes a forward facing face with respect to a direction of rotation of the bit. The forward facing face includes individual cutter pockets at least partially recessed into the forward facing face. The method also includes securing a cutting element at least partially within each of the individual cutter pockets. Each cutting element has an abrasion resistance. Each of the plurality of blades is formed of a blade material having an abrasion resistance that is less than the abrasion resistance of the cutting element.

    摘要翻译： 一种生产钻头的方法，例如用于将井钻入地层中的方法，包括形成具有多个叶片的钻头体。 多个叶片中的每一个相对于钻头的旋转方向包括前向面。 面向前的面包括至少部分地凹入到前向面中的单个切割器凹口。 该方法还包括至少部分地将切割元件固定在每个单独的切割器凹穴内。 每个切割元件都具有耐磨性。 多个叶片中的每一个由具有小于切割元件的耐磨性的耐磨性的刀片材料形成。