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    • 2. 发明申请
    • MULTIPLE RIDGE CUTTING ELEMENT
    • 多刀头切削元件
    • WO2017172431A2
    • 2017-10-05
    • PCT/US2017/023509
    • 2017-03-22
    • SMITH INTERNATIONAL, INC.
    • XIAOGE, GanSONG, HuiminGREGG, JasonTAMMINEMI, Sandeep
    • E21B10/42E21B10/54
    • E21B10/5673E21B10/42E21B10/54E21B10/55
    • A cutting element may include a substrate; and an ultrahard layer on the substrate, the ultrahard layer including a non-planar working surface that is surrounded by a peripheral edge having a varying height around a circumference of the cutting element, the working surface also having: a plurality of cutting crests extending from an elevated portion of the peripheral edge across at least a portion of the working surface; at least one valley between the plurality of cutting crests; and a canted surface extending laterally from each of the outer plurality of cutting crests towards a depressed portion of the peripheral edge, a height between the depressed portion and the elevated portion being greater than a height between the elevated portion and the valley.
    • 切割元件可以包括基板; 以及在所述基底上的超硬层,所述超硬层包括由周围边缘围绕的非平面工作表面,所述周边具有围绕所述切割元件的圆周的变化的高度,所述工作表面还具有:多个切割脊,从 横跨工作表面的至少一部分的外围边缘的升高部分; 所述多个切割脊之间的至少一个谷; 以及倾斜表面,所述倾斜表面从所述外部多个切割峰中的每一个朝向所述外围边缘的凹陷部横向延伸,所述凹陷部与所述升高部之间的高度大于所述升高部与所述谷之间的高度。 >
    • 5. 发明申请
    • ROLLER CONE DRILL BIT WITH EVENLY LOADED CUTTING ELEMENTS
    • 滚轮锥钻头,带有偶尔加载的切割元件
    • WO2017003709A1
    • 2017-01-05
    • PCT/US2016/037940
    • 2016-06-16
    • SMITH INTERNATIONAL, INC.
    • MCDONOUGH, Scott D.GATELL, Joshua
    • E21B10/08E21B10/16E21B10/10
    • E21B10/08E21B10/16
    • 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.
    • 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。
    • 7. 发明申请
    • ROLLER CUTTING ELEMENT CONSTRUCTION
    • 滚子切割元件结构
    • WO2016073809A1
    • 2016-05-12
    • PCT/US2015/059374
    • 2015-11-06
    • SMITH INTERNATIONAL, INC.
    • YU, Feng
    • E21B10/42E21B10/43E21B10/54
    • E21B10/55B01J3/062B01J2203/0655B01J2203/0685B23P15/28E21B10/003E21B10/567E21B10/62E21B10/633
    • Roller cutters comprise a diamond-bonded body joined to an infiltration substrate. An extension is joined to the substrate and includes first section having a diameter sized the same as the substrate, and an integral second section having a diameter smaller than the substrate. The extension is joined to the substrate during an HPHT process. The first section has a thickness greater than that of the infiltration substrate. The second section has an axial length greater than the combined thickness of the substrate and the first section. The extension has a strength and/or toughness greater than the substrate as a result of its material composition, e.g., the amount of binder phase material and/or the size of hard phase material. The roller cutter is rotatably disposed within a pocket internal cavity, wherein the pocket is attached to a drill bit.
    • 滚子切割机包括连接到渗透基底的金刚石结合体。 延伸部连接到基板,并且包括具有与基板相同尺寸的直径的第一部分和具有小于基板的直径的整体的第二部分。 在HPHT过程中,延伸部分与基底相连。 第一部分的厚度大于浸渗底物的厚度。 第二部分的轴向长度大于基板和第一部分的组合厚度。 由于其材料组成,例如粘结相材料的量和/或硬相材料的尺寸,延伸部具有大于基材的强度和/或韧性。 辊切割器可旋转地设置在袋内部空腔内,其中袋被附接到钻头。