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    Method for applying hardfacing material to a steel bodied bit and bit formed by such method
    1.
    发明授权
    Method for applying hardfacing material to a steel bodied bit and bit formed by such method 有权
    将表面硬化材料施加到通过这种方法形成的钢体位和钻头的方法

    公开(公告)号：US06568491B1

    公开(公告)日：2003-05-27

    申请号：US09873912

    申请日：2001-06-04

    申请人： Oliver Matthews, III ,  David P. Miess

    发明人： Oliver Matthews, III ,  David P. Miess

    IPC分类号： E21B1008

    CPC分类号： E21B10/55

    摘要： A graphite or silicate plug is coated with a refractory metal and positioned in the cutter pocket of a steel bodied bit as molten hardfacing material is applied to the bit surface under high temperature conditions. The refractory metal cooperates with the hardfacing material to act as a wetting agent that draws the hardfacing material into intimate contact with the body of the displacement plug. The plug is removed leaving a composite pocket opening formed by the steel body and the hardfacing material. A PDC cutter inserted into the composite pocket opening closely adheres to the sides of the opening to reduce the gap between the cutter and the hardfacing material to hereby minimize the effects of erosion in the area of the gap. The wetting material on the displacement plug permits the hardfacing material to flow into and remain in position immediately adjacent the displacement body and in the small surface area between adjacent cutter pockets. The hardfacing material also cooperates with the-steel pocket to increase the surface area of the pocket recess that provides additional structural support to the cutter to improve the stability and retention of the cutter in the bit. The refractory metal may preferably be molybdenum that is applied in a thin layer deposited by a plasma coating technique directly over the body of the graphite displacement body.

    摘要翻译： 用耐火金属涂覆石墨或硅酸盐塞，并将其定位在钢质钻头的刀槽中，因为在高温条件下将熔融的表面硬化材料施加到钻头表面。 难熔金属与表面硬化材料配合起来作为润湿剂，其将表面硬化材料拉紧与位移塞的主体紧密接触。 塞子被移除，留下由钢体和表面硬化材料形成的复合口袋开口。 插入到复合口袋开口中的PDC切割器紧密地附着在开口的侧面上，以减少切割器和表面硬化材料之间的间隙，从而最小化在间隙区域中侵蚀的影响。 位移塞上的润湿材料允许表面硬化材料流入并保持在紧邻位移体的位置和相邻切割器凹穴之间的小表面区域中。 表面硬化材料还与钢袋配合以增加凹槽的表面积，为切割器提供额外的结构支撑，以提高刀具在钻头中的稳定性和保持力。 难熔金属可优选为通过等离子体涂覆技术沉积在薄层上的钼直接在石墨置换体的主体上。

    Liquid-metal-embrittlement resistant superabrasive compact, and related drill bits and methods
    6.
    发明授权
    Liquid-metal-embrittlement resistant superabrasive compact, and related drill bits and methods 有权
    液态金属 - 耐脆性超级磨料紧凑型及相关钻头及方法

    公开(公告)号：US08863864B1

    公开(公告)日：2014-10-21

    申请号：US13116566

    申请日：2011-05-26

    申请人： David P. Miess

    发明人： David P. Miess

    IPC分类号： E21B10/00

    CPC分类号： E21B10/567 ,  B24D3/06 ,  E21B10/5673

    摘要： A superabrasive compact (e.g., a polycrystalline diamond compact) including a substrate and at least one feature for reducing the susceptibility of the substrate to liquid metal embrittlement during brazing operations is disclosed. The superabrasive compact may include a region between the substrate and a superabrasive table in which residual tensile stresses are located. The at least one feature may be disposed proximate to the region between the substrate and the superabrasive table in which residual tensile stresses are located.

    摘要翻译： 公开了一种包括基底的超级磨料（例如，多晶金刚石致密体）和用于在钎焊操作期间降低基底对液态金属脆化的敏感性的至少一个特征。 超级磨料压块可以包括在基材和位于其中的残余拉伸应力的超研磨工作台之间的区域。 所述至少一个特征可以设置在靠近残留拉伸应力所在的基底和超研磨台之间的区域。

    POLYCRYSTALLINE DIAMOND MATERIALS AND RELATED PRODUCTS
    9.
    发明申请
    POLYCRYSTALLINE DIAMOND MATERIALS AND RELATED PRODUCTS 失效
    多晶金刚石材料及相关产品

    公开(公告)号：US20120011779A1

    公开(公告)日：2012-01-19

    申请号：US13245249

    申请日：2011-09-26

    申请人： Michael A. Vail ,  Kenneth E. Bertagnolli ,  Jason Wiggins ,  Jiang Qian ,  David P. Miess

    发明人： Michael A. Vail ,  Kenneth E. Bertagnolli ,  Jason Wiggins ,  Jiang Qian ,  David P. Miess

    IPC分类号： B24D3/10 ,  C09K3/14 ,  C01B31/00

    CPC分类号： E21B10/46 ,  B01J3/062 ,  B01J2203/062 ,  B01J2203/0655 ,  B01J2203/0685

    摘要： Embodiments relate to methods of fabricating PCD materials by subjecting a mixture that exhibits a broad diamond particle size distribution to an HPHT process, PCD materials so-formed, and PDCs including a polycrystalline diamond table comprising such PCD materials. In an embodiment, a PCD material includes a plurality of bonded diamond grains that exhibit a substantially unimodal diamond grain size distribution characterized, at least in part, by a parameter θ that is less than about 1.0. θ = x 6 · σ , where x is the average grain size of the substantially unimodal diamond grain size distribution, and σ is the standard deviation of the substantially unimodal diamond grain size distribution.

    摘要翻译： 实施方案涉及通过使表现出宽金刚石粒度分布的混合物经受HPHT方法，所形成的PCD材料和包括包含这种PCD材料的多晶金刚石台的PDC来制造PCD材料的方法。 在一个实施方案中，PCD材料包括多个结合的金刚石晶粒，其表现出基本上单峰金刚石晶粒尺寸分布，其至少部分地由参数和特征表征; 小于约1.0。 ＆thetas; = x 6·＆sgr ，其中x是基本上单峰金刚石晶粒尺寸分布的平均晶粒尺寸， 是基本上单峰金刚石晶粒尺寸分布的标准偏差。

    Cutting element apparatuses and drill bits so equipped
    10.
    发明授权
    Cutting element apparatuses and drill bits so equipped 有权
    切割元件装置和钻头如此装备

    公开(公告)号：US07942218B2

    公开(公告)日：2011-05-17

    申请号：US12134489

    申请日：2008-06-06

    申请人： Craig H. Cooley ,  Timothy N. Sexton ,  David P. Miess ,  Jeffrey B. Lund

    发明人： Craig H. Cooley ,  Timothy N. Sexton ,  David P. Miess ,  Jeffrey B. Lund

    IPC分类号： E21B10/42

    CPC分类号： E21B10/5673 ,  E21B10/42 ,  E21B10/55 ,  E21B10/573 ,  E21B10/5735 ,  E21B10/633 ,  E21B2010/562 ,  E21B2010/624

    摘要： A cutting element assembly for use on a rotary drill bit for forming a borehole in a subterranean formation. A cutting element assembly includes a cutting element having a substrate. The cutting element assembly additionally includes a superabrasive material bonded to the substrate. The substrate extends from an end surface to a back surface. A base member is also coupled to the back surface of the substrate. Additionally, a recess is defined in the base member and a structural element is coupled to the base member. The cutting element assembly also includes a biasing element configured to selectively bias the structural element.

    摘要翻译： 一种在旋转钻头上用于在地层中形成钻孔的切割元件组件。 切割元件组件包括具有基底的切割元件。 切割元件组件另外包括结合到基底的超级磨料。 基板从端面延伸到后表面。 基底构件也耦合到衬底的背面。 此外，在基底构件中限定凹部，并且结构元件联接到基底构件。 切割元件组件还包括被配置为选择性地偏置结构元件的偏置元件。