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    Drill bit inserts with variations in thickness of diamond coating
    1.
    发明授权
    Drill bit inserts with variations in thickness of diamond coating 有权
    钻头刀片，金刚石涂层厚度变化

    公开(公告)号：US06460636B1

    公开(公告)日：2002-10-08

    申请号：US09465631

    申请日：1999-12-17

    申请人： Zhou Yong ,  Suprant J. Huang ,  Nathan R. Anderson ,  J. Daniel Belnap ,  Chris E. Cawthorne ,  Ronald K. Eyre ,  Madapusi K. Keshavan ,  Per I. Nese ,  Michael A. Siracki ,  Gary R. Portwood

    发明人： Zhou Yong ,  Suprant J. Huang ,  Nathan R. Anderson ,  J. Daniel Belnap ,  Chris E. Cawthorne ,  Ronald K. Eyre ,  Madapusi K. Keshavan ,  Per I. Nese ,  Michael A. Siracki ,  Gary R. Portwood

    IPC分类号： E21B1046

    CPC分类号： E21B10/5673 ,  E21B10/56 ,  E21B10/573 ,  E21B10/5735 ,  E21B17/1092

    摘要： A cutter element for use in a drill bit, comprising a substrate and a cutting layer. The substrate comprises a grip portion and an extension portion, where the grip portion has an insert axis and an extension portion including an interface surface having a first apex. The cutting layer is affixed to the interface surface and has a cutting surface having a second apex. The cutting layer is shaped such that when a plane passing through the first apex and lying parallel to the insert axis and normal to a radius from the insert axis, the plane divides the cutting layer into major and minor portions and the major portion has a major volume that is at least 60 percent of the total volume of said cutting layer. Alternative embodiments of the present invention include variations wherein the first and second apices do not coincide and wherein the interface surface of the substrate is not axisymmetric. Using these variations, cutter elements having sizeable variations in thickness are constructed.

    摘要翻译： 一种用于钻头的切割元件，包括基底和切割层。 基板包括握持部分和延伸部分，其中握持部分具有插入轴线和包括具有第一顶点的界面的延伸部分。 切割层固定在界面表面上并具有具有第二顶点的切割表面。 切割层被成形为使得当平面穿过第一顶点并且平行于插入轴线平行并且平行于插入轴线的半径时，该平面将切割层分成主要和次要部分，并且主要部分具有主要部分 体积为所述切割层的总体积的至少60％。 本发明的替代实施例包括其中第一和第二顶点不重合并且其中基底的界面不是轴对称的变型。 使用这些变型，构造了具有相当大的厚度变化的切割元件。

    Rock bit with an extended center jet
    6.
    发明授权
    Rock bit with an extended center jet 失效
    岩石与一个扩展的中心喷气机

    公开(公告)号：US5853055A

    公开(公告)日：1998-12-29

    申请号：US671517

    申请日：1996-06-27

    申请人： Michael A. Siracki ,  Per I. Nese ,  Alan W. Lockstedt ,  Dennis Cisneros ,  Michael S. Oliver ,  Gary R. Portwood

    发明人： Michael A. Siracki ,  Per I. Nese ,  Alan W. Lockstedt ,  Dennis Cisneros ,  Michael S. Oliver ,  Gary R. Portwood

    IPC分类号： E21B10/16 ,  E21B10/18

    CPC分类号： E21B10/18 ,  E21B10/16

    摘要： A rotary cone bit for drilling bore holes in earth formations whose body has a thread pin end and a dome end from which extend three legs. A cutter cone is rotatably mounted to each leg and is radially oriented about the bit's central axis. Each cutter cone has a gage row of cutting elements extending from the cone surface nearest the mouth and a nose row extending nearest the cone's apex. A center jet for emitting fluid or mud is located on the dome. The jet has a converging nozzle with an exit orifice which extends below a predefined horizontal plane intersected by the cones or cutting elements. The exit orifice has a constant diameter for a length at least equal to its diameter for reducing the diffusion of the fluid or mud flow emitted. Fluid or mud emitted from the center jet travels substantially uninterrupted within a cylindrical space between the cones which is not invaded by any cutting element. This reduced diffusion substantially uninterrupted fluid flow strikes the bore hole bottom with maximum impact energy for enhanced removal of earth formation cuttings.

    摘要翻译： 一个用于在地层中钻孔的旋转锥形钻头，其主体具有螺纹针端和从其延伸三条腿的圆顶端。 切割锥体可旋转地安装到每个支腿上并且围绕钻头的中心轴线径向定向。 每个切割锥体具有从最接近嘴部的锥形表面延伸的切割元件的行列，以及最靠近锥体顶点延伸的鼻列。 用于喷射流体或泥浆的中心喷射器位于圆顶上。 喷射器具有会聚喷嘴，其具有出口孔，该出口孔延伸到与锥体或切割元件相交的预定水平面下方。 出口孔具有至少等于其直径的长度的恒定直径，用于减少发射的流体或泥浆流的扩散。 从中心射流发射的流体或泥浆在不被任何切割元件侵入的锥体之间的圆柱形空间内基本上不间断地行进。 这种减少的扩散基本上不间断的流体流动以最大的冲击能量撞击钻孔底部，以增强地球切屑的去除。

    Ordered elastomeric composite material
    8.
    发明授权
    Ordered elastomeric composite material 有权
    有序的弹性复合材料

    公开(公告)号：US07229077B2

    公开(公告)日：2007-06-12

    申请号：US10460345

    申请日：2003-06-11

    申请人： Madapusi K. Keshavan ,  Anthony Griffo ,  Alysia C. White ,  Robert Denton ,  Patricia Heel ,  Leroy N. Tinkham ,  Michael A. Siracki

    发明人： Madapusi K. Keshavan ,  Anthony Griffo ,  Alysia C. White ,  Robert Denton ,  Patricia Heel ,  Leroy N. Tinkham ,  Michael A. Siracki

    IPC分类号： F16J15/20

    CPC分类号： F16J15/32 ,  F16J15/104 ,  Y10T428/218 ,  Y10T428/2929 ,  Y10T428/2935 ,  Y10T428/2938

    摘要： Ordered elastomeric composites comprise an ordered arrangement of a number of first elastomeric phases distributed uniformly within a continuous matrix second elastomeric phase. The second phase can be formed from an elastomeric material that is relatively harder than an elastomeric material that is used to form the first phases. Each first phase can be in the form of a core having a defined length and diameter, and the second phase can be formed from a number of shells that each surround a respective core. In a preferred embodiment, the arrangement of cores and shells are aligned coaxially with one another to provide a cellular structure. Ordered elastomeric composites of this invention can be used to form part of or an entire elastomeric seal, e.g., in the form of an annular ring adapted for use in a rotary cone drill bit.

    摘要翻译： 有序的弹性体复合材料包括在连续基质第二弹性体相中均匀分布的多个第一弹性体相的有序排列。 第二相可以由比用于形成第一相的弹性体材料相对更硬的弹性体材料形成。 每个第一相可以是具有限定的长度和直径的芯的形式，并且第二相可以由各自围绕相应的芯的多个壳形成。 在优选实施例中，芯和壳的布置彼此同轴对准以提供细胞结构。 本发明的有序弹性体复合材料可用于形成一部分弹性体密封件，或整体弹性体密封件，例如适用于旋转锥形钻头的环形环形式。

    Composite nozzles for rock bits
    9.
    发明授权
    Composite nozzles for rock bits 失效
    岩石复合喷嘴

    公开(公告)号：US5494122A

    公开(公告)日：1996-02-27

    申请号：US317969

    申请日：1994-10-04

    申请人： James L. Larsen ,  Michael A. Siracki ,  Thomas W. Oldham ,  Madapusi K. Keshavan

    发明人： James L. Larsen ,  Michael A. Siracki ,  Thomas W. Oldham ,  Madapusi K. Keshavan

    IPC分类号： E21B10/18 ,  E21B10/60 ,  E21B10/61 ,  E21B10/62

    CPC分类号： E21B10/61 ,  E21B10/18 ,  E21B10/62

    摘要： A composite mini-extended nozzle is disclosed that is designed to both resist erosion and be strong enough to withstand the shock of a downhole drilling environment. In addition, means are provided to shroud at least a portion of the extended nozzle to further protect a portion of the nozzle nearest the exit plane from downhole obstructions. A combination of materials used to form the nozzle may include a matrix of tungsten carbides with suitable binder joined to an outer metal jacket nozzle body. A third ceramic matrix material may be utilized to line or partially line an interior passage formed by the mini-extended nozzle and a reduced in diameter portion of the nozzle design may include a built-in fracture plane in the unlikely event the end of the nozzle hits an obstruction. The extended portion of the nozzle will shear off along this fracture plane thereby preventing a nozzle washout that likely would result in a trip out of the hole to repair the resultant damage to the rock bit.

    摘要翻译： 公开了一种复合微型延伸喷嘴，其设计成既可以抵抗侵蚀，又能够承受井下钻井环境的冲击。 此外，提供了用于遮盖延伸喷嘴的至少一部分的装置，以进一步保护最靠近出口平面的喷嘴的一部分不受井下障碍物的影响。 用于形成喷嘴的材料的组合可以包括具有与外部金属护套喷嘴体接合的合适粘合剂的碳化钨基体。 可以使用第三陶瓷基质材料将由微型扩展喷嘴形成的内部通道排列或部分排列，并且喷嘴设计的减小的直径部分可以包括在不太可能的情况下喷嘴端部的内置断裂平面 遇到障碍 喷嘴的延伸部分将沿着该断裂平面剪切，从而防止可能导致从孔中脱出的喷嘴冲洗，以修复对钻石钻头造成的损坏。