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公开(公告)号：US07703557B2
公开(公告)日：2010-04-27
申请号：US11760933
申请日：2007-06-11
IPC分类号： E21B10/43
CPC分类号： E21B10/43
摘要： A drill bit for drilling a borehole comprises a bit body having a bit face. In addition, the drill bit comprises a plurality of primary blades. Further, the drill bit comprises a plurality of primary cutter elements mounted to each primary blade and at least one backup cutter element mounted to each primary blade. Still further, the drill bit comprises a plurality of secondary blades. Moreover, the drill bit comprises a plurality of primary cutter elements mounted to each secondary blade. The ratio of the total number of backup cutter elements mounted to the plurality of primary blades to the total number of backup cutter elements mounted to the plurality of secondary blades is greater than 2.0. Each backup cutter element on each primary blade has substantially the same radial position as one of the primary cutter elements on the same primary blade.
摘要翻译： 用于钻孔的钻头包括具有钻头面的钻头体。 另外，钻头包括多个主叶片。 此外，钻头包括安装到每个主叶片的多个主切割器元件和安装到每个主叶片的至少一个支撑切割器元件。 此外，钻头包括多个次级叶片。 此外，钻头包括安装到每个次级叶片的多个主切割器元件。 安装到多个主叶片的备用切割器元件的总数与安装到多个辅助叶片的备用切割器元件的总数之比大于2.0。 每个主叶片上的每个支撑切割器元件具有与相同主叶片上的主切割器元件之一基本相同的径向位置。
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公开(公告)号：US08869919B2
公开(公告)日：2014-10-28
申请号：US13089948
申请日：2011-04-19
摘要： A drill bit may have a bit body, a plurality of cutting blades extending radially from the bit body and having cutting elements disposed thereon, the plurality of cutting blades forming a cutting blade gage pad diameter configured to contact a formation, and a plurality of raised volumes of material extending from the bit body and devoid of cutting elements, the plurality of raised volumes of material forming a gage pad diameter configured to contact the formation, wherein the plurality of cutting blades and the plurality of raised volume of material are circumferentially spaced having fluid courses that extend therebetween.
摘要翻译： 钻头可以具有钻头体，多个切割刀片从钻头体径向延伸并且具有设置在其上的切割元件，所述多个切割刀片形成构造成接触地层的切割刀片量规垫直径，以及多个凸起 从钻头体延伸并且没有切割元件的多个材料的体积，多个凸起体积的材料形成构造成接触地层的量具垫直径，其中多个切割刀片和多个凸起体积的材料沿周向间隔开， 在它们之间延伸的流体流道。
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公开(公告)号：US20110253457A1
公开(公告)日：2011-10-20
申请号：US13089948
申请日：2011-04-19
IPC分类号： E21B10/42
摘要： A drill bit is disclosed herein, the drill bit having a bit body, a plurality of cutting blades extending radially from the bit body and having cutting elements disposed thereon, the plurality of cutting blades forming a cutting blade gage pad diameter configured to contact a formation, and a plurality of raised volumes of material extending from the bit body and devoid of cutting elements, the plurality of raised volumes of material forming a gage pad diameter configured to contact the formation, wherein the plurality of cutting blades and the plurality of raised volume of material are circumferentially spaced having fluid courses that extend therebetween.
摘要翻译： 这里公开了一种钻头，钻头具有钻头体，从钻头体径向延伸并具有设置在钻头体上的切削元件的多个切割刀片，所述多个切割刀片形成切割刀片量规焊盘直径，其被配置为接触地层 以及从钻头体延伸并且没有切割元件的多个凸起体积的材料，所述多个凸起体积的材料形成构造成接触所述地层的量具垫直径，其中所述多个切割刀片和所述多个凸起体积 的材料在周向间隔开，其间具有在其间延伸的流体流道。
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