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1.发明申请FIXED CUTTER DRILL BIT WITH MULTIPLE CUTTING ELEMENTS AT FIRST RADIAL POSITION TO CUT CORE 审中-公开固定切割钻头与多个切割元件在第一个径向位置切割核心公开(公告)号：US20150068815A1
公开(公告)日：2015-03-12
申请号：US14482965
申请日：2014-09-10
发明人： Hemachandar Mada , Michael G. Azar , Jason R. Gregg , Joshua Gatell , Edward Wayne Gutierrez , Suman Velvaluri
IPC分类号： E21B10/43
摘要： A fixed cutter drill bit may include a bit body having a bit centerline; a plurality of blades extending radially from the bit body and separated by a plurality of flow courses therebetween, each of the plurality of blades being spaced a radial distance from the bit centerline to define a core-forming region; a plurality of cutting elements disposed on the plurality of blades, the plurality of cutting elements comprising at least two coring cutting elements disposed on the plurality of blades, the at least two coring cutting elements being the radially innermost cutting elements on the plurality of blades.
摘要翻译： 固定的切割钻头可以包括具有钻头中心线的钻头体; 多个叶片，其从所述钻头体径向延伸并且被多个流道间隔开，所述多个叶片中的每一个叶片与所述钻头中心线间隔开径向距离以限定岩心形成区域; 多个切割元件，其设置在所述多个叶片上，所述多个切割元件包括设置在所述多个叶片上的至少两个取芯切割元件，所述至少两个取芯切割元件是所述多个叶片上的径向最内切割元件。
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2.发明授权公开(公告)号：US10301881B2
公开(公告)日：2019-05-28
申请号：US14482965
申请日：2014-09-10
发明人： Hemachandar Mada , Michael G. Azar , Jason R. Gregg , Joshua Gatell , Edward Wayne Gutierrez , Suman Velvaluri
摘要： A fixed cutter drill bit may include a bit body having a bit centerline and a plurality of blades that extend radially from the bit body and are separated by a plurality of flow courses therebetween. Each of the plurality of blades is spaced a radial distance from the bit centerline to define a core-forming region. A plurality of cutting elements is disposed on the plurality of blades. The plurality of cutting elements comprises at least two coring cutting elements that are disposed on the plurality of blades and the at least two coring cutting elements are the radially innermost cutting elements on the plurality of blades.
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