Polycrystalline diamond constructions having optimized material composition
    22.
    发明授权
    Polycrystalline diamond constructions having optimized material composition 有权
    具有优化材料成分的多晶金刚石结构

    公开(公告)号:US08689912B2

    公开(公告)日:2014-04-08

    申请号:US12954403

    申请日:2010-11-24

    IPC分类号: E21B10/36

    摘要: Diamond bonded constructions include a diamond body comprising intercrystalline bonded diamond and interstitial regions. The body has a working surface and an interface surface, and may be joined to a metallic substrate. The body has a gradient diamond volume content greater about 1.5 percent, wherein the diamond content at the interface surface is less than 94 percent, and increases moving toward the working surface. The body may include a region that is substantially free of a catalyst material otherwise disposed within the body and present in a gradient amount. An additional material may be included within the body and be present in a changing amount. The body may be formed by high-pressure HPHT processing, e.g., from 6,200 MPa to 10,000 MPa, to produce a sintered body having a characteristic diamond volume fraction v. average grain size relationship distinguishable from that of diamond bonded constructions form by conventional-pressure HPHT processing.

    摘要翻译: 金刚石粘合结构包括包含晶间结合金刚石和间隙区域的金刚石体。 主体具有工作表面和界面,并且可以连接到金属基底。 身体具有大约1.5%的梯度金刚石体积含量,其中界面处的金刚石含量小于94%,并且增加朝着工作表面移动。 身体可以包括基本上不含催化剂材料的区域,否则其中设置在体内并以梯度量存在。 另外的材料可以包括在体内并以不断变化的量存在。 主体可以通过高压HPHT加工形成,例如从6,200MPa到10,000MPa,以产生具有特征金刚石体积分数v与常规压力形式的金刚石结合结构区别的平均晶粒尺寸关系的烧结体 HPHT加工。

    POLYCRYSTALLINE DIAMOND MATERIAL WITH HIGH TOUGHNESS AND HIGH WEAR RESISTANCE
    23.
    发明申请
    POLYCRYSTALLINE DIAMOND MATERIAL WITH HIGH TOUGHNESS AND HIGH WEAR RESISTANCE 有权
    具有高韧性和高耐磨性的多晶金刚石材料

    公开(公告)号:US20110031037A1

    公开(公告)日:2011-02-10

    申请号:US12851677

    申请日:2010-08-06

    IPC分类号: E21B10/43

    摘要: A cutting element that includes a substrate; and an outer layer of polycrystalline diamond material disposed upon the outermost end of the cutting element, wherein the polycrystalline diamond material: a plurality of interconnected diamond particles; and a plurality of interstitial regions disposed among the bonded diamond particles, wherein the plurality of interstitial regions contain a plurality of metal carbide phases and a plurality of metal binder phases together forming a plurality of metallic phases, wherein the plurality of metal carbide phases are formed from a plurality of metal carbide particles; wherein the plurality of interconnected diamond particles form at least about 60 to at most about 80% by weight of the polycrystalline diamond material; and wherein the plurality of metal carbide phases represent at least 50% by weight of the plurality of metallic phases is disclosed.

    摘要翻译: 一种切割元件,包括基底; 以及设置在所述切割元件的最外端上的多晶金刚石材料的外层,其中所述多晶金刚石材料:多个互连的金刚石颗粒; 以及配置在所述接合金刚石颗粒之间的多个间隙区域,其中所述多个间隙区域包含多个金属碳化物相和多个金属粘结相,一起形成多个金属相,其中形成所述多个金属碳化物相 从多个金属碳化物颗粒; 其中所述多个相互连接的金刚石颗粒形​​成所述多晶金刚石材料的至少约60至至多约80重量% 并且其中所述多个金属碳化物相表示所述多个金属相的至少50重量%。

    HIGHLY WEAR RESISTANT DIAMOND INSERT WITH IMPROVED TRANSITION STRUCTURE
    24.
    发明申请
    HIGHLY WEAR RESISTANT DIAMOND INSERT WITH IMPROVED TRANSITION STRUCTURE 有权
    具有改进的过渡结构的高耐磨金刚石插件

    公开(公告)号:US20110031033A1

    公开(公告)日:2011-02-10

    申请号:US12851874

    申请日:2010-08-06

    IPC分类号: E21B10/46

    摘要: An insert for a drill bit may include a metallic carbide body; an outer layer of polycrystalline diamond material on the outermost end of the insert, the polycrystalline diamond material comprising a plurality of interconnected first diamond grains and a first binder material in interstitial regions between the interconnected first diamond grains; and at least one transition layer between the metallic carbide body and the outer layer, the at least one transition layer comprising a composite of second diamond grains, first metal carbide particles, and a second binder material, wherein the second diamond grains have a larger grain size than the first diamond grains.

    摘要翻译: 用于钻头的插入件可以包括金属碳化物体; 所述多晶金刚石材料在所述互连的第一金刚石晶粒之间的间隙区域中包括多个互连的第一金刚石晶粒和第一粘合剂材料; 以及所述金属碳化物体和所述外层之间的至少一个过渡层,所述至少一个过渡层包括第二金刚石晶粒,第一金属碳化物颗粒和第二粘合剂材料的复合物,其中所述第二金刚石晶粒具有较大的晶粒 尺寸比第一颗金刚石颗粒大。

    Dual-seal drill bit pressure communication system
    25.
    发明授权
    Dual-seal drill bit pressure communication system 有权
    双密封钻头压力通讯系统

    公开(公告)号:US06679342B2

    公开(公告)日:2004-01-20

    申请号:US10214020

    申请日:2002-08-07

    IPC分类号: E21B1000

    摘要: A drill bit for use in a borehole at least partially containing drilling fluid includes a bit body having at least two bit components, including at least one leg, the leg having a journal segment, and a roller cone rotatably mounted upon the journal segment and forming at least one bearing cavity therebetween. Also included is an annular primary seal disposed between the leg and the roller cone, an annular secondary seal disposed between the leg and the roller cone and between the annular primary seal and the borehole and an annular space disposed between the annular primary seal and the annular secondary seal, the annular space at least partially containing fluid and being in substantially absolute fluid isolation from the bearing cavity and a conduit for permitting the flow of fluid from the annular space to the borehole. The annular secondary seal may be primarily elastomeric and a passage for permitting the flow of fluid may further permit the flow of fluid from the borehole to the annular space. The annular space may at least partially include a grease possessing a water washout value of under approximately 50% per ASTM D-4049 water spray test for lubrication characteristics and the grease may include a polymer tackifier of between approximately 1% and approximately 5% by weight.

    摘要翻译: 用于至少部分地包含钻井流体的钻孔中的钻头包括具有至少两个钻头部件的钻头体,所述钻头体包括至少一个腿部,所述腿部具有轴颈部分,以及可旋转地安装在所述轴颈部段上并形成 其间具有至少一个轴承腔。 还包括设置在腿和辊锥之间的环形主密封件,设置在腿和辊锥之间以及环形主密封件和钻孔之间的环形次级密封件,以及设置在环形主密封件和环形主密封件之间的环形空间 第二密封件,至少部分地包含流体并且与轴承腔基本上绝对的流体隔离的环形空间和用于允许流体从环形空间流到钻孔的导管。 环形二次密封件可以主要是弹性体,并且用于允许流体流动的通道可以进一步允许流体从钻孔流到环形空间。 环形空间可以至少部分地包括具有低于大约50%的水冲洗值的润滑脂,其根据ASTM D-4049喷水试验进行润滑特性,并且润滑脂可以包括约1重量%和约5重量%之间的聚合物增粘剂 。

    Earth-boring bit having cobalt/tungsten carbide inserts
    26.
    发明授权
    Earth-boring bit having cobalt/tungsten carbide inserts 有权
    钻头具有钴/碳化钨刀片

    公开(公告)号:US06244364B1

    公开(公告)日:2001-06-12

    申请号:US09236147

    申请日:1999-01-22

    IPC分类号: E21B1036

    CPC分类号: E21B10/52

    摘要: An earth-boring device such as a drill bit is disclosed. The earth boring device includes a rotary main cutting structure, an insert on the main cutting structure. The insert is formed of a composition having tungsten carbide and cobalt. The cobalt makes up less than approximately 9% by weight of the composition. The composition has a Rockwell A hardness greater than approximately an Hmin as determined by the following formula: Hmin=91.1−0.63X, where X represents a cobalt content by weight of the composition.

    摘要翻译: 公开了一种诸如钻头的钻孔装置。 钻孔装置包括旋转主切割结构,主切割结构上的刀片。 插入物由具有碳化钨和钴的组合物形成。 钴占组合物重量的不到约9%。 该组合物的洛氏硬度大于由下式确定的大约Hmin:Hmin = 91.1-0.63X,其中X表示组合物重量的钴含量。

    Angular offset PDC cutting structures

    公开(公告)号:US20060254829A1

    公开(公告)日:2006-11-16

    申请号:US11129060

    申请日:2005-05-13

    申请人: Peter Cariveau

    发明人: Peter Cariveau

    IPC分类号: E21B10/36

    CPC分类号: E21B10/42

    摘要: A drill bit with a drill bit body having a cutting structure face. A pin is formed on the drill bit body for attaching the drill bit body to a drill string. The pin has a first central axis to be aligned with the drill string when attached and the cutting structure face has a second central axis. The second central axis is misaligned relative to the first central axis.

    Self relieving seal
    29.
    发明申请
    Self relieving seal 有权
    自卸密封

    公开(公告)号:US20060096782A1

    公开(公告)日:2006-05-11

    申请号:US11312075

    申请日:2005-12-19

    IPC分类号: E21B7/00 E21B10/12

    摘要: Self relieving seals of this invention comprise an elastomeric seal body having a first sealing surface and a second sealing surface for contact with respective drill bit sealing surfaces. The seal includes a pair of external surfaces that each extend along the seal body between the first and second sealing surfaces. The seal includes one or more relief ports that are disposed through the seal body and that have openings through each of the seal body external surfaces. The relief port can be specially configured, e.g., have different diameter sections of constant or variable dimensions, to provide a degree of control over pressure equalization through the seal body when the seal is loaded within the drill bit. The seal may include an element, e.g., solid, tubular, or porous, disposed within the relief port to provide a further desired degree of control over pressure equalization through the seal when the seal is loaded within the drill bit. Surface features, on the seal or the drill bit, can be provided to offset the relief port opening from the rock bit so that it is not blocked off. The seal can include a valve mechanism to provide a further degree of control over fluid passage through the relief port.

    摘要翻译: 本发明的自卸式密封件包括具有第一密封表面和用于与相应的钻头密封表面接触的第二密封表面的弹性体密封体。 密封件包括一对外表面,每个外表面沿密封体在第一和第二密封表面之间延伸。 密封件包括一个或多个卸载口,其设置成穿过密封体并具有通过每个密封体外表面的开口。 泄压口可以被特别地构造,例如具有恒定或可变尺寸的不同直径部分,以在密封件被装载在钻头内时通过密封体提供对压力平衡的程度的控制。 密封件可以包括设置在泄放口内的元件,例如固体,管状或多孔的,以便当密封件装载在钻头内时,通过密封件提供对压力平衡的进一步期望程度的控制。 可以提供在密封件或钻头上的表面特征以将卸载口开口偏离岩石钻头,使得其不被堵塞。 密封件可以包括阀机构,以进一步控制通过排放口的流体通道。