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    Rotary drag bit with multiple backup cutters
    1.
    发明授权
    Rotary drag bit with multiple backup cutters 有权
    旋转拖曳位与多个备份刀具

    公开(公告)号：US07861809B2

    公开(公告)日：2011-01-04

    申请号：US12019814

    申请日：2008-01-25

    申请人： David Gavia ,  Ryan J. Hanford ,  Lane E. Snell ,  Jason E. Hoines ,  Matthew R. Isbell ,  Eric E. McClain ,  Michael L. Doster

    发明人： David Gavia ,  Ryan J. Hanford ,  Lane E. Snell ,  Jason E. Hoines ,  Matthew R. Isbell ,  Eric E. McClain ,  Michael L. Doster

    IPC分类号： E21B10/43

    CPC分类号： E21B10/55 ,  E21B10/43

    摘要： A rotary drag bit includes a primary cutter row comprising at least one primary cutter and a multiple backup cutter group. The multiple backup cutter group comprises a first and second trailing cutter row, each comprising at least one cutter positioned to follow the at least one primary cutter. The rotary drag bit life is extended by the multiple backup cutter groups making the bit more durable and extending the life of the cutters. Further, the cutters of the multiple backup cutter group are configured to selectively engage a subterranean formation material being drilled, providing improved bit life and reduced stress upon the cutters. Other embodiments of rotary drag bits are provided.

    摘要翻译： 旋转牵引钻头包括主切割器行，其包括至少一个主切割器和多个备用切割器组。 多个备用切割器组包括第一和第二拖尾切割器排，每个包括至少一个定位成跟随至少一个主切割器的切割器。 旋转拖曳钻头寿命由多个支撑刀具组延长，使刀头更加耐用，延长刀具的使用寿命。 此外，多支撑切割器组的切割器构造成选择性地接合正被钻孔的地下地层材料，从而提供改善的钻头寿命并减小刀具上的应力。 提供旋转阻力钻头的其他实施例。

    ROTARY DRAG BIT
    2.
    发明申请
    ROTARY DRAG BIT 有权
    旋转拖轮位

    公开(公告)号：US20080179106A1

    公开(公告)日：2008-07-31

    申请号：US12019814

    申请日：2008-01-25

    申请人： David Gavia ,  Ryan J. Hanford ,  Lane E. Snell ,  Jason E. Hoines ,  Matthew R. Isbell ,  Eric E. McClain ,  Michael L. Doster

    发明人： David Gavia ,  Ryan J. Hanford ,  Lane E. Snell ,  Jason E. Hoines ,  Matthew R. Isbell ,  Eric E. McClain ,  Michael L. Doster

    IPC分类号： E21B10/43

    CPC分类号： E21B10/55 ,  E21B10/43

    摘要： A rotary drag bit includes a primary cutter row comprising at least one primary cutter and a multiple backup cutter group. The multiple backup cutter group comprises a first and second trailing cutter row, each comprising at least one cutter positioned to follow the at least one primary cutter. The rotary drag bit life is extended by the multiple backup cutter groups making the bit more durable and extending the life of the cutters. Further, the cutters of the multiple backup cutter group are configured to selectively engage a subterranean formation material being drilled, providing improved bit life and reduced stress upon the cutters. Other embodiments of rotary drag bits are provided.

    摘要翻译： 旋转牵引钻头包括主切割器行，其包括至少一个主切割器和多个备用切割器组。 多个备用切割器组包括第一和第二拖尾切割器排，每个包括至少一个定位成跟随至少一个主切割器的切割器。 旋转拖曳钻头寿命由多个支撑刀具组延长，使刀头更加耐用，延长刀具的使用寿命。 此外，多支撑切割器组的切割器构造成选择性地接合正被钻孔的地下地层材料，提供改善的钻头寿命并减小切割器上的应力。 提供旋转阻力钻头的其他实施例。

    ROTARY DRAG BIT AND METHODS THEREFOR
    3.
    发明申请
    ROTARY DRAG BIT AND METHODS THEREFOR 有权
    旋转拖动位及其方法

    公开(公告)号：US20080179108A1

    公开(公告)日：2008-07-31

    申请号：US12020492

    申请日：2008-01-25

    申请人： Eric E. McClain ,  David Gavia ,  Lane E. Snell ,  Jason E. Hoines ,  Matthew R. Isbell ,  Michael L. Doster

    发明人： Eric E. McClain ,  David Gavia ,  Lane E. Snell ,  Jason E. Hoines ,  Matthew R. Isbell ,  Michael L. Doster

    IPC分类号： E21B10/43

    CPC分类号： E21B10/55 ,  E21B10/43

    摘要： A rotary drag bit includes a primary cutter row comprising at least one primary cutter, and at least two additional cutters configured relative to one another. In one embodiment, the cutters are backup cutters of a cutter group located in respective first and second trailing cutter rows, oriented relative to one another, and positioned to substantially follow the at least one primary cutter. The rotary drag bit life is extended by the backup cutter group, making the bit more durable and extending the life of the cutters. In other of the embodiments, the cutters are configured to selectively engage a subterranean formation material being drilled, providing improved bit life and reduced stress upon the cutters. Still other embodiments of rotary drag bits include backup cutter configurations having different backrake angles and siderake angles, including methods therefor.

    摘要翻译： 旋转牵引钻头包括主切割器行，其包括至少一个主切割器，以及至少两个相对于彼此配置的附加切割器。 在一个实施例中，切割器是位于相应的第一和第二拖尾切割器行中的切割器组的备用切割器，其相对于彼此定向并且被定位成基本上跟随至少一个主切割器。 旋转拖曳钻头的寿命由后备刀具组延长，使钻头更耐用，延长刀具的使用寿命。 在其他实施例中，切割器被配置为选择性地接合正在钻孔的地下地层材料，提供改善的钻头寿命并减少切割器上的应力。 旋转拖曳钻头的其他实施例包括具有不同的反向角度和擒挡角度的后备刀具配置，包括其方法。

    Rotary drag bit and methods therefor
    4.
    发明授权
    Rotary drag bit and methods therefor 有权
    旋转阻力钻头及其方法

    公开(公告)号：US07762355B2

    公开(公告)日：2010-07-27

    申请号：US12020492

    申请日：2008-01-25

    申请人： Eric E. McClain ,  David Gavia ,  Lane E. Snell ,  Jason E. Hoines ,  Matthew R. Isbell ,  Michael L. Doster

    发明人： Eric E. McClain ,  David Gavia ,  Lane E. Snell ,  Jason E. Hoines ,  Matthew R. Isbell ,  Michael L. Doster

    IPC分类号： E21B10/46

    CPC分类号： E21B10/55 ,  E21B10/43

    摘要： A rotary drag bit includes a primary cutter row comprising at least one primary cutter, and at least two additional cutters configured relative to one another. In one embodiment, the cutters are backup cutters of a backup cutter group located in respective first and second trailing cutter rows, oriented relative to one another, and positioned to substantially follow the at least one primary cutter. The rotary drag bit life is extended by the backup cutter group, making the bit more durable and extending the life of the cutters. In other of the embodiments, the cutters are configured to selectively engage a subterranean formation material being drilled, providing improved bit life and reduced stress upon the cutters. Still other embodiments of rotary drag bits include backup cutter configurations having different backrake angles and siderake angles, including methods therefor.

    摘要翻译： 旋转牵引钻头包括主切割器行，其包括至少一个主切割器，以及至少两个相对于彼此配置的附加切割器。 在一个实施例中，切割器是位于相应的第一和第二拖尾切割器行中的备用切割器组的备用切割器，其相对于彼此定向并且被定位成基本上跟随至少一个主切割器。 旋转拖曳钻头的寿命由后备刀具组延长，使钻头更耐用，延长刀具的使用寿命。 在其他实施例中，切割器被配置为选择性地接合正在钻孔的地下地层材料，提供改善的钻头寿命并减少切割器上的应力。 旋转拖曳钻头的其他实施例包括具有不同的反向角度和擒挡角度的后备刀具配置，包括其方法。

    Earth-boring tools including abrasive cutting structures and related methods
    7.
    发明授权
    Earth-boring tools including abrasive cutting structures and related methods 有权
    钻孔工具包括磨料切割结构和相关方法

    公开(公告)号：US08177001B2

    公开(公告)日：2012-05-15

    申请号：US13095032

    申请日：2011-04-27

    申请人： Eric E. McClain ,  Michael L. Doster ,  John C. Thomas ,  Matthew R. Isbell ,  Jarod DeGeorge ,  Chad T. Jurica

    发明人： Eric E. McClain ,  Michael L. Doster ,  John C. Thomas ,  Matthew R. Isbell ,  Jarod DeGeorge ,  Chad T. Jurica

    IPC分类号： E21B10/43

    CPC分类号： E21B10/43 ,  E21B10/485 ,  E21B29/06

    摘要： A drill bit includes a bit body having a face on which two different types of cutters are disposed, the first type being cutting elements suitable for drilling at least one subterranean formation and the second type being at least one of an abrasive cutting structure and an abrasive cutting element suitable for drilling through a casing shoe, reamer shoe, casing bit, casing or liner string and cementing equipment or other components, as well as cement. Methods of forming earth-boring tools include disposing at least one abrasive cutting structure or element on the earth-boring tool. Methods of drilling with earth-boring tools including drilling with at least one abrasive cutting structure or element.

    摘要翻译： 钻头包括具有一个面的钻头体，其上设有两种不同类型的切割器，第一类型是适于钻取至少一个地下地层的切割元件，第二类型是磨料切割结构和研磨剂中的至少一种 适用于通过套管，扩孔器，套管钻头，套管或衬管线​​以及固井设备或其他部件以及水泥钻孔的切割元件。 形成钻孔工具的方法包括在钻孔工具上设置至少一个研磨切割结构或元件。 使用钻孔工具进行钻孔的方法，包括用至少一个研磨切割结构或元件进行钻孔。

    EARTH-BORING TOOLS INCLUDING ABRASIVE CUTTING STRUCTURES AND RELATED METHODS
    8.
    发明申请
    EARTH-BORING TOOLS INCLUDING ABRASIVE CUTTING STRUCTURES AND RELATED METHODS 有权
    包括磨料切割结构的地下工具及相关方法

    公开(公告)号：US20110198128A1

    公开(公告)日：2011-08-18

    申请号：US13095032

    申请日：2011-04-27

    申请人： Eric E. McClain ,  Michael L. Doster ,  John C. Thomas ,  Matthew R. Isbell ,  Jarod DeGeorge ,  Chad T. Jurica

    发明人： Eric E. McClain ,  Michael L. Doster ,  John C. Thomas ,  Matthew R. Isbell ,  Jarod DeGeorge ,  Chad T. Jurica

    IPC分类号： E21B7/00 ,  E21B10/36 ,  B23P15/28

    CPC分类号： E21B10/43 ,  E21B10/485 ,  E21B29/06

    摘要： A drill bit includes a bit body having a face on which two different types of cutters are disposed, the first type being cutting elements suitable for drilling at least one subterranean formation and the second type being at least one of an abrasive cutting structure and an abrasive cutting element suitable for drilling through a casing shoe, reamer shoe, casing bit, casing or liner string and cementing equipment or other components, as well as cement. Methods of forming earth-boring tools include disposing at least one abrasive cutting structure or element on the earth-boring tool. Methods of drilling with earth-boring tools including drilling with at least one abrasive cutting structure or element.

    摘要翻译： 钻头包括具有一个面的钻头体，其上设有两种不同类型的切割器，第一类型是适于钻取至少一个地下地层的切割元件，第二类型是磨料切割结构和研磨剂中的至少一种 适用于通过套管，扩孔器，套管钻头，套管或衬管线​​以及固井设备或其他部件以及水泥钻孔的切割元件。 形成钻孔工具的方法包括在钻孔工具上设置至少一个研磨切割结构或元件。 使用钻孔工具进行钻孔的方法，包括用至少一个研磨切割结构或元件进行钻孔。