Invention Grant
US08087478B2 Cutting elements including cutting tables with shaped faces configured to provide continuous effective positive back rake angles, drill bits so equipped and methods of drilling 有权
切割元件包括具有成形面的切割台,配置为提供连续有效的正后倾角,钻头如此装备和钻孔方法

  • Patent Title: Cutting elements including cutting tables with shaped faces configured to provide continuous effective positive back rake angles, drill bits so equipped and methods of drilling
  • Patent Title (中): 切割元件包括具有成形面的切割台,配置为提供连续有效的正后倾角,钻头如此装备和钻孔方法
  • Application No.: US12478806
    Application Date: 2009-06-05
  • Publication No.: US08087478B2
    Publication Date: 2012-01-03
  • Inventor: Suresh G. Patel
  • Applicant: Suresh G. Patel
  • Applicant Address: US TX Houston
  • Assignee: Baker Hughes Incorporated
  • Current Assignee: Baker Hughes Incorporated
  • Current Assignee Address: US TX Houston
  • Agency: Traskbritt
  • Main IPC: E21B10/16
  • IPC: E21B10/16 E21B10/52
Cutting elements including cutting tables with shaped faces configured to provide continuous effective positive back rake angles, drill bits so equipped and methods of drilling
Abstract:
A cutting element for a drag-type earth-boring drill bit includes a cutting table with a face including a region that is configured to cut into a formation at a positive back rake angle and to direct formation cuttings, or chips, that have been cut from the earth formation toward the hydraulics of the drill bit. Drill bits may include one or more cutting elements that have been configured in this manner. Such a drill bit may also include a wear pad for limiting the depth to which a cutting element penetrates a surface of a bore hole in an earth formation. Such a wear pad may have a substantially constant thickness.
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