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124 条记录 (耗时 0.034 秒)

    Cutting structures
    31.
    发明授权
    Cutting structures 有权
    切割结构

    公开(公告)号：US07435478B2

    公开(公告)日：2008-10-14

    申请号：US11044651

    申请日：2005-01-27

    申请人： Madapusi K. Keshavan

    发明人： Madapusi K. Keshavan

    IPC分类号： B32B9/00

    CPC分类号： C23C30/005 ,  B24D18/0009 ,  E21B10/573 ,  Y10T428/24942 ,  Y10T428/30

    摘要： A polycrystalline diamond compact cutter that includes a thermally stable polycrystalline diamond layer, a carbide substrate, and a polycrystalline cubic boron nitride layer interposed between the thermally stable polycrystalline diamond layer and the carbide substrate is disclosed. A method of forming a polycrystalline diamond compact cutter that includes the steps of providing a carbide substrate, disposing a polycrystalline cubic boron nitride layer on the carbide substrate, disposing a polycrystalline diamond layer on the polycrystalline cubic boron nitride layer, and treating at least a portion of the polycrystalline diamond layer to form a thermally stable polycrystalline diamond layer is also disclosed.

    摘要翻译： 公开了一种包括热稳定多晶金刚石层，碳化物衬底和插入在热稳定多晶金刚石层和碳化物衬底之间的多晶立方氮化硼层的多晶金刚石致密切割机。 一种形成多晶金刚石致密切割机的方法，包括以下步骤：提供碳化物基体，在所述碳化物基体上设置多晶立方氮化硼层，在所述多晶立方氮化硼层上设置多晶金刚石层，以及处理至少一部分 的多晶金刚石层以形成热稳定的多晶金刚石层。

    Reinforcing overlay for matrix bit bodies
    32.
    发明申请
    Reinforcing overlay for matrix bit bodies 审中-公开
    加强矩阵位体的覆盖

    公开(公告)号：US20080164070A1

    公开(公告)日：2008-07-10

    申请号：US11650860

    申请日：2007-01-08

    申请人： Madapusi K. Keshavan ,  Kumar T. Kembaiyan ,  Alysia C. White ,  Anthony Griffo

    发明人： Madapusi K. Keshavan ,  Kumar T. Kembaiyan ,  Alysia C. White ,  Anthony Griffo

    IPC分类号： E21B10/46

    CPC分类号： E21B10/54 ,  E21B10/55

    摘要： A drill bit that includes a matrix bit body having a reinforcing overlay thereon and having at least one blade thereon; at least one cutter pocket disposed on the at least one blade; at least one cutter disposed in the at least one cutter pocket; and a braze material disposed between the at least one cutter and the at least one cutter pocket, wherein the reinforcing overlay comprises carbide particles and at least one binder and has a melting point greater than a melting point of the braze material is disclosed.

    摘要翻译： 一种钻头，其包括其上具有加强覆盖物并且在其上具有至少一个刀片的矩阵钻头体; 设置在所述至少一个叶片上的至少一个切割器袋; 至少一个切割器设置在所述至少一个切割器凹槽中; 以及布置在所述至少一个切割器和所述至少一个切割器袋之间的钎焊材料，其中所述增强覆盖物包含碳化物颗粒和至少一个粘合剂并且具有大于所述钎焊材料的熔点的熔点。

    Cutting element with canted interface surface and bit body incorporating the same
    33.
    发明授权
    Cutting element with canted interface surface and bit body incorporating the same 有权
    具有倾斜接口表面的切削元件和结合其的钻头体

    公开(公告)号：US07395885B2

    公开(公告)日：2008-07-08

    申请号：US11657198

    申请日：2007-01-23

    申请人： Ronald K. Eyre ,  Madapusi K. Keshavan ,  David Truax

    发明人： Ronald K. Eyre ,  Madapusi K. Keshavan ,  David Truax

    IPC分类号： E21B10/48

    CPC分类号： E21B10/5735

    摘要： The present invention provides a cutting element having a cylindrical body having a canted end face on which is formed an ultra hard material layer and to a bit incorporating such cutting element. One or a plurality of transition layers may be provided between the ultra hard material layer and the cutting element body.

    摘要翻译： 本发明提供一种切割元件，该切割元件具有一个具有倾斜端面的圆柱体，其上形成有超硬材料层，以及一个包含该切割元件的钻头。 可以在超硬材料层和切割元件主体之间设置一个或多个过渡层。

    Rolling cutter
    34.
    发明申请
    Rolling cutter 有权
    滚动刀具

    公开(公告)号：US20070278017A1

    公开(公告)日：2007-12-06

    申请号：US11526558

    申请日：2006-09-25

    申请人： Yuelin Shen ,  Youhe Zhang ,  Zhou Yong ,  Jiaqing Yu ,  Madapusi K. Keshavan

    发明人： Yuelin Shen ,  Youhe Zhang ,  Zhou Yong ,  Jiaqing Yu ,  Madapusi K. Keshavan

    IPC分类号： E21B10/36

    CPC分类号： E21B10/52 ,  E21B10/5673 ,  E21B10/573 ,  Y10T29/49947 ,  Y10T29/49963

    摘要： A cutting element for a drill bit that includes an outer support element having at least a bottom portion and a side portion; and an inner rotatable cutting element, a portion of which is disposed in the outer support element, wherin the inner rotatable cutting element includes a substrate and a diamond cutting face having a thickness of at least 0.050 inches disposed on an upper surface of the substrate; and wherein a distance from an upper surface of the diamond cutting face to a bearing surface between the inner rotatable cutting element and the outer support element ranges from 0 to about 0.300 inches is disclosed.

    摘要翻译： 一种用于钻头的切割元件，其包括至少具有底部和侧部的外部支撑元件; 以及内部可旋转切割元件，其一部分设置在所述外部支撑元件中，所述内部可旋转切割元件包括基底和设置在所述基底的上表面上的具有至少0.050英寸的厚度的金刚石切割面; 并且其中公开了从金刚石切割面的上表面到内部可旋转切割元件和外部支撑元件之间的支承表面的距离为0至约0.300英寸。

    Drill bit inserts with variations in thickness of diamond coating
    36.
    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。

    Cutting element with canted design for improved braze contact area
    37.
    发明授权
    Cutting element with canted design for improved braze contact area 失效
    切割元件采用倾斜设计，可提高钎焊接触面积

    公开(公告)号：US06202772B1

    公开(公告)日：2001-03-20

    申请号：US09103824

    申请日：1998-06-24

    申请人： Ronald K. Eyre ,  Madapusi K. Keshavan ,  David Truax

    发明人： Ronald K. Eyre ,  Madapusi K. Keshavan ,  David Truax

    IPC分类号： E21B1062

    CPC分类号： E21B10/5735

    摘要： The present invention provides a cutting element having a cylindrical body having a canted end face on which is formed a ultra hard material layer. One or a plurality of transition layers may be provided between the ultra hard material layer and the cutting element body.

    摘要翻译： 本发明提供一种具有圆筒体的切割元件，该圆筒体具有倾斜端面，在其上形成超硬材料层。 可以在超硬材料层和切割元件主体之间设置一个或多个过渡层。

    Drill bit inserts enhanced with polycrystalline diamond
    40.
    发明授权
    Drill bit inserts enhanced with polycrystalline diamond 失效
    钻头刀片增强了多晶金刚石

    公开(公告)号：US5370195A

    公开(公告)日：1994-12-06

    申请号：US123715

    申请日：1993-09-20

    申请人： Madapusi K. Keshavan ,  Monte E. Russell ,  Dah-Ben Liang

    发明人： Madapusi K. Keshavan ,  Monte E. Russell ,  Dah-Ben Liang

    IPC分类号： E21B10/52 ,  E21B10/46 ,  E21B10/56 ,  E21B10/567

    CPC分类号： E21B10/5673

    摘要： A drill bit has means at one end for connecting the bit to a drill string and a plurality of inserts at the other end for crushing the rock to be drilled. The inserts have a cemented tungsten carbide body partially embedded in the drill bit and at least two layers at the protruding drilling portion of the insert. The outermost layer contains polycrystalline diamond and particles of carbide or carbonitride of elements selected from the group consisting of W, Ti, Ta, Cr, Mo, Cb, V, Hf and Zr. The remaining layers adjacent the polycrystalline diamond layer are transition layers each comprising a composite containing diamond crystals, particles of tungsten carbide, and particles of titanium carbonitride. The average size of the diamond particles in the polycrystalline diamond layer is greater than the average size of the carbide or carbonitride particles; and the average size of the diamond particles in the transition layers is greater than the average sizes of the carbide and carbonitride particles. In particular, the transition layers contain particles of carbide and/or carbonitride with average grain sizes of less than one micrometer. The outermost layer of polycrystalline diamond extends along at least a portion of the length of the grip portion of the carbide body embedded in the drill bit.

    摘要翻译： 钻头在一端具有用于将钻头连接到钻柱和在另一端的多个插入件的装置，用于破碎要钻探的岩石。 插入件具有部分地嵌入钻头中的粘结碳化钨体和在插入件的突出钻孔部分处的至少两层。 最外层包含选自W，Ti，Ta，Cr，Mo，Cb，V，Hf和Zr的元素的多晶金刚石和碳化物或碳氮化物的颗粒。 与多晶金刚石层相邻的剩余层是各自包含含有金刚石晶体，碳化钨颗粒和碳氮化钛颗粒的复合物的过渡层。 多晶金刚石层中的金刚石颗粒的平均尺寸大于碳化物或碳氮化物颗粒的平均尺寸; 并且过渡层中的金刚石颗粒的平均尺寸大于碳化物和碳氮化物颗粒的平均尺寸。 特别地，过渡层含有平均晶粒尺寸小于1微米的碳化物和/或碳氮化物颗粒。 多晶金刚石的最外层沿嵌入在钻头中的碳化物体的把持部分的长度的至少一部分延伸。