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公开(公告)号：WO2017003709A1
公开(公告)日：2017-01-05
申请号：PCT/US2016/037940
申请日：2016-06-16
Applicant: SMITH INTERNATIONAL, INC.
Inventor： MCDONOUGH, Scott D. , GATELL, Joshua
Abstract: A drill bit is used for drilling through earthen formations and forming a wellbore. The drill bit includes a bit body having a bit axis, and at least a first cone and a second cone coupled to the bit body. Each of the first and the second cones has a backface, a nose opposite the backface, and a cone axis of rotation. An array of cutting elements coupled to the first or second cones is in a band that lies between the backface and the nose. The cutting elements in the band are arranged at radial positions with respect to the bit axis and at least two adjacent cutting elements are at a same radial position within the array, and the remaining cutting elements are at different radial positions within the array.
Abstract translation: 钻头用于通过土层钻孔并形成井筒。 钻头包括具有钻头轴线的钻头体，以及耦合到钻头体的至少第一锥体和第二锥体。 第一和第二锥体中的每一个具有背面，与背面相对的鼻部和锥体的旋转轴线。 耦合到第一或第二锥体的切割元件的阵列位于背面和鼻子之间的带中。 带中的切割元件被布置在相对于钻头轴线的径向位置处，并且至少两个相邻的切割元件在阵列内处于相同的径向位置，并且剩余的切割元件处于阵列内的不同的径向位置。
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2.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：WO2015038698A1
公开(公告)日：2015-03-19
申请号：PCT/US2014/055076
申请日：2014-09-11
Applicant: SMITH INTERNATIONAL, INC.
Inventor： MADA, Hemachandar , AZAR, Michael, G. , GREGG, Jason, R. , GATELL, Joshua , GUTIERREZ, Edward, Wayne , VELVALURI, Suman
Abstract: 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.
Abstract translation: 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与所述钻头中心线间隔开径向距离，以限定岩芯形成区域; 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。
