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77 条记录 (耗时 0.033 秒)

    Rolling cone bit with improved wear resistant inserts
    2.
    发明授权
    Rolling cone bit with improved wear resistant inserts 失效
    具有改进的耐磨插入件的滚动锥头

    公开(公告)号：US5348108A

    公开(公告)日：1994-09-20

    申请号：US895594

    申请日：1992-06-08

    申请人： Danny E. Scott ,  Redd H. Smith ,  Gordon A. Tibbitts

    发明人： Danny E. Scott ,  Redd H. Smith ,  Gordon A. Tibbitts

    IPC分类号： B22F7/06 ,  E21B10/52 ,  E21B10/56 ,  E21B10/567 ,  E21B10/62 ,  E21B10/46

    CPC分类号： E21B10/567 ,  B22F7/06 ,  E21B10/52 ,  E21B10/56 ,  E21B10/5676 ,  E21B10/62

    摘要： An improved earth-boring bit the rolling cone variety and an insert for use therein is provided. A superabrasive element is coated with at least one layer of metallic material. The superabrasive element then is placed in a receptacle cavity in a pre-formed hard metal jacket. The superabrasive element then is brazed or infiltrated to the hard metal jacket. Metallurgical and mechanical bonds between the superabrasive element, the at least one layer of metallic material on superabrasive element, the braze or infiltrant binder material, and the fracture-tough material of the hard metal jacket retain the superabrasive element in the cavity of the hard metal jacket. Improved earth-boring bits according to this embodiment of the present invention provide abrasion-resistant earth-boring bits of the rolling cutter variety. Such improved bits, and the inserts therefore, are formed without resort to high-temperature, high-pressure processes.

    摘要翻译： 提供了一种改进的镗孔钻头，并提供了用于其中的插入件。 超级磨料元件涂覆有至少一层金属材料。 然后将超级磨料元件放置在预成形的硬金属护套中的容器腔中。 然后将超级磨料元件钎焊或渗入硬金属护套。 超级磨料元件之间的金相和机械结合，超级磨料元件上的至少一层金属材料，钎焊或渗透粘合剂材料以及硬金属护套的断裂韧性材料将超级磨料元件保持在硬质合金的空腔中 夹克。 根据本发明的该实施例的改进的钻孔钻头提供了滚动刀具的耐磨地钻钻头。 因此，这种改进的钻头和插入件不需要采用高温，高压工艺就可以形成。

    Stud design for drill bit cutting element
    3.
    发明授权
    Stud design for drill bit cutting element 失效
    钻头切割元件的螺柱设计

    公开(公告)号：US5431239A

    公开(公告)日：1995-07-11

    申请号：US44938

    申请日：1993-04-08

    申请人： Gordon A. Tibbitts ,  Craig H. Cooley ,  Redd H. Smith ,  Paul E. Pastusek ,  Ralph M. Horton

    发明人： Gordon A. Tibbitts ,  Craig H. Cooley ,  Redd H. Smith ,  Paul E. Pastusek ,  Ralph M. Horton

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

    CPC分类号： E21B10/567

    摘要： An improved stud design for an earth boring drill bit is disclosed preferably using materials of different hardness and toughness layered to provide maximum resistance to surface abrasion coupled with excellent structural properties including high strength with maximum fracture toughness. The bit body is conventionally attached to a drill string, and has a crown and gage portion. The studs preferably include a core, made of steel or other material having high fracture toughness, covered at least in part with a hard, abrasion resistant material such as tungsten carbide. Each stud is secured to a socket in the bit body by means of brazing or other suitable means such as a press fit. The cutting element is brazed to a mounting face of the stud prior to affixation of the stud to the bit body and is preferably comprised of a polycrystalline diamond compact adhered to a backing layer of tungsten carbide.

    摘要翻译： 公开了一种用于钻孔钻头的改进的螺柱设计，其使用不同硬度和韧性的材料，其层压以提供对表面磨损的最大阻力，以及优异的结构特性，包括具有最大断裂韧性的高强度。 钻头主体通常安装在钻柱上，并具有表冠和表面部分。 螺柱优选地包括由钢或其他具有高断裂韧性的材料制成的芯，至少部分地用硬的耐磨材料（例如碳化钨）覆盖。 每个螺柱通过钎焊或其他合适的方式如压配合固定在钻头体中的插座上。 在将螺柱固定到钻头体之前，将切割元件钎焊到螺柱的安装面上，并且优选地由粘附到碳化钨背衬层的多晶金刚石块组成。

    Drill bits with controlled cutter loading and depth of cut
    9.
    发明授权
    Drill bits with controlled cutter loading and depth of cut 有权
    钻头具有受控的切割装载和切割深度

    公开(公告)号：US06298930B1

    公开(公告)日：2001-10-09

    申请号：US09383228

    申请日：1999-08-26

    申请人： L. Allen Sinor ,  Wayne R. Hansen ,  Mark W. Dykstra ,  Craig H. Cooley ,  Gordon A. Tibbitts

    发明人： L. Allen Sinor ,  Wayne R. Hansen ,  Mark W. Dykstra ,  Craig H. Cooley ,  Gordon A. Tibbitts

    IPC分类号： E21B1046

    CPC分类号： E21B10/43 ,  E21B10/573 ,  E21B2010/566

    摘要： A rotary drag bit including exterior features to control the depth of cut by cutters mounted thereon, so as to control the volume of formation material cut per bit rotation as well as the torque experienced by the bit and an associated bottomhole assembly. The exterior features preferably precede, taken in the direction of bit rotation, cutters with which they are associated, and provide sufficient bearing area so as to support the bit against the bottom of the borehole under weight on bit without exceeding the compressive strength of the formation rock. The exterior features may be oriented and configured to function optimally at a predicted rate of penetration, or range of rates, at which the bit may be operated, such rate or rates being further optionally maximized in softer formations in light of the ability of the bit to hydraulically clear a maximum volume of formation cuttings to prevent so-called bit balling.

    摘要翻译： 一种旋转牵引钻头，包括外部特征以控制安装在其上的切割器的切割深度，以便控制每位旋转切割的成形材料的体积以及钻头和相关的井底组件所经历的扭矩。 外部特征优选地在钻头旋转的方向，与它们相关联的切割器之前提供，并且提供足够的承载面积，以便在钻头的重量下支撑钻头的底部而不超过地层的抗压强度 岩。 外部特征可以被定向和配置为以预测的穿透速率或比特的运行范围最佳地起作用，这种速率或速率在软地层中进一步可选地根据钻头的能力而最大化 以液压方式清除最大体积的地层切屑，以防止所谓的钻孔。

    Swivel/tilting bit crown for earth-boring drills
    10.
    发明授权
    Swivel/tilting bit crown for earth-boring drills 失效
    用于钻孔钻头的旋转/倾斜钻头表冠

    公开(公告)号：US5503236A

    公开(公告)日：1996-04-02

    申请号：US117214

    申请日：1993-09-03

    申请人： Gordon A. Tibbitts

    发明人： Gordon A. Tibbitts

    IPC分类号： E21B7/06 ,  E21B7/08 ,  E21B10/00 ,  E21B17/04 ,  E21B17/05 ,  E21B17/20 ,  F16D3/24 ,  F16D3/44 ,  E21B10/62

    CPC分类号： E21B7/068 ,  E21B10/00 ,  E21B17/04 ,  E21B17/05 ,  E21B17/20 ,  E21B7/064 ,  F16D3/24 ,  F16D3/44

    摘要： A drill bit for drilling subterranean formations includes a device to provide a "universal" effect between the shank and crown for self alignment of the crown with the bore hole in the formation. The bit is suitable for downhole assemblies configured for straight drilling, directional drilling and navigational drilling. The device can be incorporated into both drag bits and roller-type "rock" bits. Preferred embodiments include a flexible sub connecting the crown to the shank portion and having reduced stiffness relative to the drill string. Alternatively a spherical universal joint or trunnion type universal is used. Replaceable lugs increase durability and reliability of the universal. The device equalizes the loads on cutters while reducing wear, average loads, and impact loads on cutters. Bore hole diameter and chatter of the bit in the bore hole are reduced, promoting maximum efficiency and rate of penetration as wobble and precession are minimized.

    摘要翻译： 用于钻探地下地层的钻头包括在柄和冠之间提供“通用”效应的装置，用于使冠部与地层中的钻孔自对准。 该钻头适用于直井钻井，定向钻井和导航钻井的井下组件。 该装置可以并入拖曳位和滚子式“摇滚”位。 优选实施例包括将冠部连接到柄部分并且相对于钻柱具有降低的刚度的柔性子部分。 或者，使用球形万向接头或耳轴式通用型。 可更换的凸耳增加了通用的耐用性和可靠性。 该装置使刀具上的负载相等，同时减少刀具上的磨损，平均载荷和冲击载荷。 钻孔中的钻孔直径和钻头的颤动减小，从而在摆动和进动最小化的同时提高最大效率和穿透速度。