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    • 2. 发明申请
    • Rolling Cone Drill Bit Having High Density Cutting Elements
    • 具有高密度切割元件的滚动钻头
    • US20090188724A1
    • 2009-07-30
    • US12351188
    • 2009-01-09
    • Gary PortwoodLuca TedeschiGiampaolo FerrariJosh GatellJohn ClunanAllen D. White
    • Gary PortwoodLuca TedeschiGiampaolo FerrariJosh GatellJohn ClunanAllen D. White
    • E21B10/16E21B10/08E21B10/52
    • E21B10/16
    • A rolling cone drill bit for drilling in earthen formations. In an embodiment, the drill bit comprises a plurality of rolling cone cutters. Each cone cutter includes a plurality of gage cutting elements, a first plurality of bottomhole cutting elements, and a second plurality of bottomhole cutter elements. Each of the first plurality of bottomhole cutting elements is staggered relative to the gage cutting elements on each cone cutter, and the profiles of the gage cutting elements and the first plurality of bottomhole cutting elements on each cone cutter overlap in rotated profile view. Each of the second plurality of bottomhole cutting elements is staggered relative to the first plurality of bottomhole cutting elements on at least one cone cutter, and the profiles of the first plurality of bottomhole cutting elements and the second plurality of bottomhole cutting elements on at least one cone cutter overlap in rotated profile view.
    • 一种用于在土层中钻孔的滚动钻头。 在一个实施例中,钻头包括多个滚动锥形切割器。 每个锥形切割器包括多个量具切割元件,第一多个井底切割元件和第二多个井底切割元件。 第一多个井底切割元件中的每一个相对于每个锥形切割器上的计量切割元件交错,并且每个锥形切割器上的量规切割元件的轮廓和第一多个井底切割元件在旋转轮廓视图中重叠。 第二多个井底切割元件中的每一个相对于至少一个锥形切割器上的第一多个井底切割元件交错,并且第一多个井底切割元件和第二多个井底切割元件的轮廓在至少一个 锥形切割器在旋转轮廓视图中重叠。