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1. 发明授权

US06298930B1 Drill bits with controlled cutter loading and depth of cut 有权
标题翻译：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。

2. 发明授权

US5590729A Superhard cutting structures for earth boring with enhanced stiffness and heat transfer capabilities 失效
标题翻译：超硬切削结构，具有增强的刚度和传热能力
公开(公告)号：US5590729A
公开(公告)日：1997-01-07
申请号：US353453
申请日：1994-12-09
申请人： Craig H. Cooley , Gordon A. Tibbitts , Wayne R. Hansen
发明人： Craig H. Cooley , Gordon A. Tibbitts , Wayne R. Hansen
IPC分类号： E21B10/42 , E21B10/43 , E21B10/54 , E21B10/55 , E21B10/56 , E21B10/567 , E21B10/573 , E21B10/60 , E21B10/46
CPC分类号： E21B10/43 , E21B10/55 , E21B10/567 , E21B10/5735 , E21B10/60
摘要： A cutting element for a rotary drill bit for subterranean drilling, including a substantially planar table of superhard material having a cutting face and a cutting edge. The table may be reinforced against bending with one or more strut portions extending from the rear of the table to the rear of the substrate and at least partially across the cutting element. The strut portions may be integral with the diamond table, or separately fabricated and of another material. The strut portions, in addition to or in lieu of providing stiffness to the superhard table, may also serve to enhance heat transfer away from the cutting face and cutting edge of the superhard table. The structure supporting the cutting element on the drill bit and the body of the drill bit itself may be additionally configured to include structures to facilitate heat transfer away from the superhard table.
摘要翻译：一种用于地下钻孔的旋转钻头的切割元件，包括具有切割面和切割刃的超硬材料的基本平坦的台面。可以通过从桌子的后部延伸到基板的后部并且至少部分地跨过切割元件的一个或多个支柱部分来增强桌子的弯曲。支柱部分可以与金刚石台一体，或者单独制造和另一种材料。支撑部分除了或代替为超硬桌子提供刚度之外，还可用于增强离开超硬桌子的切割面和切割刃的热传递。支撑钻头上的切割元件的结构和钻头本身的主体可以被额外地构造成包括便于远离超硬表的热传递的结构。

3. 发明授权

US6006846A Cutting element, drill bit, system and method for drilling soft plastic formations 失效
标题翻译：切削元件，钻头，钻孔软质地层的系统和方法
公开(公告)号：US6006846A
公开(公告)日：1999-12-28
申请号：US934486
申请日：1997-09-19
申请人： Gordon A. Tibbitts , Craig H. Cooley
发明人： Gordon A. Tibbitts , Craig H. Cooley
IPC分类号： E21B10/56 , E21B10/567 , E21B10/46
CPC分类号： E21B10/5673 , E21B2010/566
摘要： A cutting element and drill bits so equipped particularly suited for drilling subterranean formations exhibiting a superabrasive cutting face with at least a portion of extremely low surface roughness, by way of example on the order of a polished, mirror-like finish. The cutting face includes a peripheral cutting edge adjacent the low surface roughness portion of the cutting face for engaging a subterranean formation, the cutting edge being of sharp configuration and essentially defining a line of contact with the formation lying between the cutting face and a side surface of the cutting element extending rearwardly therefrom. In certain formations, particularly soft, plastic formations, the drill bits equipped with the inventive cutting element may be employed as a system and method with drilling fluids modified to maintain the integrity of formation cuttings by stabilizing and locking in reactive clays present in the rock to inhibit bit balling and facilitate hydraulic cuttings removal from the bit face.
摘要翻译：一种切割元件和钻头，特别适合于以抛光的镜面状抛光的顺序举例说明具有表面粗糙度的至少一部分的具有超级磨料切割面的地下地层的钻孔。切割面包括邻近切割面的低表面粗糙部分的周边切割边缘，用于接合地层，切割刃具有尖锐的构造，并且基本上限定与位于切割面和侧面之间的地层的接触线的切割元件从其向后延伸。在某些地层，特别是软的塑料地层中，配备有本发明的切割元件的钻头可用作系统和方法，该系统和方法具有改进的钻井流体，以通过将存在于岩石中的反应性粘土稳定和锁定来保持地层切屑的完整性抑制钻头的冲击，并且便于从钻头面去除液压切屑。

4. 发明授权

US5651420A Drilling apparatus with dynamic cuttings removal and cleaning 失效
标题翻译：钻孔设备，动态切屑清除
公开(公告)号：US5651420A
公开(公告)日：1997-07-29
申请号：US407384
申请日：1995-03-17
申请人： Gordon A. Tibbitts , Craig H. Cooley
发明人： Gordon A. Tibbitts , Craig H. Cooley
IPC分类号： E21B10/56 , E21B10/567 , E21B10/60 , E21B12/06 , E21B21/00 , E21B4/00 , E21B17/10 , E21B17/16
CPC分类号： E21B10/567 , E21B10/60 , E21B12/06 , E21B21/00 , E21B2010/566
摘要： A drilling apparatus having cuttings removal structure to reduce balling thereof comprising an apparatus body having a connection thereon, and structure for contacting cut potions of the earth formation. The contacting structure may include chip breakers, flexible cables, rotating nozzle assemblies, rotating turbine wheel assemblies, rotating vane assemblies, flails or combinations of these. The apparatus may include elastomeric portions and/or movable potions. The drilling apparatus may comprise a drill bit, drilling stabilizer, drill collar, reamer, downhole motor, etc.
摘要翻译：一种具有切割去除结构以减少其滚珠的钻孔设备，包括其上具有连接的装置主体和用于接触地层的切割部分的结构。接触结构可以包括断屑器，柔性电缆，旋转喷嘴组件，旋转的涡轮机叶轮组件，旋转叶片组件，喷枪或它们的组合。该装置可以包括弹性体部分和/或可移动药剂。钻孔装置可以包括钻头，钻井稳定器，钻铤，铰刀，井下马达等

5. 发明授权

US5199511A Drill bit and method for reducing formation fluid invasion and for improved drilling in plastic formations 失效
标题翻译：钻头和减少形成流体入侵和改进塑料成型钻井的方法
公开(公告)号：US5199511A
公开(公告)日：1993-04-06
申请号：US760584
申请日：1991-09-16
申请人： Gordon A. Tibbitts , Craig H. Cooley
发明人： Gordon A. Tibbitts , Craig H. Cooley
IPC分类号： E21B7/00 , E21B10/00 , E21B10/42 , E21B10/43 , E21B10/46 , E21B10/60
CPC分类号： E21B10/43 , E21B10/00 , E21B10/46 , E21B10/60 , E21B7/00
摘要： A drill bit and method in which polycrystalline diamond cutters mounted on a bit crown cut formation chips akin to the manner in which a grater cuts cheese. Chips in impermeable or plastic formations are extruded by the cutters into cavities internal to the bit via slots adjacent each cutter. Drilling fluid circulates internally of the bit from the drill string and into the annulus above that portion of the bit bearing cutters. In one embodiment, the portion of the bit body upon which the crown is formed is made of an elastomer which is pressurized into sealing engagement with the bottom of the borehole thereby further sealing freshly cut formation from drilling fluid.

6. 发明授权

US06527065B1 Superabrasive cutting elements for rotary drag bits configured for scooping a formation 失效
标题翻译：用于旋转拖曳钻头的超级磨料切割元件，被配置为舀取地层
公开(公告)号：US06527065B1
公开(公告)日：2003-03-04
申请号：US09650799
申请日：2000-08-30
申请人： Gordon A. Tibbitts , Craig H. Cooley
发明人： Gordon A. Tibbitts , Craig H. Cooley
IPC分类号： E21B1008
CPC分类号： E21B10/43 , E21B10/55 , E21B10/5673 , E21B10/5735 , E21B10/602
摘要： Cutting elements for use in a rotary drill bit are configured to facilitate positioning of the cutting elements at a positive rake angle with respect to the formation to enhance compressive stresses in the cutting element and to reduce cutting loads on the cutting elements. The cutting element generally comprises a three-dimensional superabrasive cutting member having a leading edge and a three-dimensional arcuate scoop-like surface which conveys formation cuttings away from the cutting element. The cutting element may also be formed to a substrate or backing. A drill bit suitable for use of the cutting elements of the invention is disclosed which includes passageways and internal fluid passages for enhancing the conveyance of formation cuttings away from the leading edge of the cutting element. A method of drilling earthen formations with a drill bit incorporating at least one cutting element comprising a three-dimensional superabrasive cutting member having a leading edge and a three-dimensional arcuate scoop-like surface which conveys formation cuttings away from the cutting element is also disclosed.
摘要翻译：用于旋转钻头的切割元件构造成便于切割元件相对于地层以正向前角定位，以增强切割元件中的压缩应力并减少切割元件上的切割负载。切割元件通常包括具有前缘和三维弓形勺状表面的三维超研磨切割构件，其将形成切屑传送离开切割元件。切割元件也可以形成为基底或背衬。公开了一种适于使用本发明的切割元件的钻头，其包括通道和内部流体通道，用于增强地层切屑远离切割元件的前缘的传送。还公开了一种用钻头结合至少一个切割元件的钻头钻地层的方法，所述切割元件包括具有前缘的三维超研磨切割构件和将切割元件传送成形切割的三维弓形勺状表面。

7. 发明授权

US5431239A Stud design for drill bit cutting element 失效
标题翻译：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。

8. 发明授权

US5460233A Diamond cutting structure for drilling hard subterranean formations 失效
标题翻译：用于钻取硬地层的金刚石切割结构
公开(公告)号：US5460233A
公开(公告)日：1995-10-24
申请号：US39858
申请日：1993-03-30
申请人： Nigel C. Meany , Craig H. Cooley , Gordon A. Tibbitts
发明人： Nigel C. Meany , Craig H. Cooley , Gordon A. Tibbitts
IPC分类号： E21B10/56 , E21B10/567 , E21B10/573 , E21B10/46
CPC分类号： E21B10/5673 , E21B10/573 , Y10T407/26
摘要： A rotary drag bit for drilling hard rock formations with substantially planar PDC cutting elements having diamond tables backed by substrates which flare or taper laterally outwardly and rearwardly of the cutting edge of the diamond table. A cutting structure defining a "lipped" cutting edge is also disclosed.
摘要翻译：用于钻出具有基本上平坦的PDC切割元件的硬质岩层的旋转阻力钻头，所述PDC切割元件具有由钻石支撑的金刚石台，所述钻石台由钻石台的切割边缘横向向外和向后扩张或渐缩。还公开了一种限定“唇形”切割刃的切割结构。

9. 发明授权

US5582258A Earth boring drill bit with chip breaker 失效
标题翻译：地镗钻头带断屑器
公开(公告)号：US5582258A
公开(公告)日：1996-12-10
申请号：US397657
申请日：1995-02-28
申请人： Gordon A. Tibbitts , Wayne R. Hansen
发明人： Gordon A. Tibbitts , Wayne R. Hansen
IPC分类号： E21B10/56 , E21B10/567 , E21B10/60 , E21B10/46
CPC分类号： E21B10/567 , E21B10/60 , E21B2010/566
摘要： A drill bit for boring an earth formation is designed for rotation in a given direction. The bit body includes an operating face with at least one cutting element formed thereon. A cutting surface formed on the cutting element faces in a forward direction with respect to the direction of rotation. A cutting edge is formed on the cutting surface and is embedded in the earth formation during boring so that the formation is received against a portion of the cutting surface. The cutting element creates successive formation chips during boring which grow in length during bit rotation. A chip breaker formed adjacent the cutting surface imparts a strain to the chip by bending and/or twisting the chip and thereby increases the likelihood that it will break off. In one aspect, fluid flows in a fluid course formed in front of the cutting element during boring. Twisting increases the surface area of the chip presented to fluid in the fluid course which further increases the likelihood that the chip will break.
摘要翻译：用于钻孔地层的钻头设计用于沿给定方向旋转。钻头体包括具有形成在其上的至少一个切割元件的操作面。形成在切割元件上的切割面相对于旋转方向朝向前方。在切削表面上形成切削刃，并且在钻孔期间嵌入在地层中，使得地层接收在切割表面的一部分上。切削元件在钻头期间产生连续的成形钻屑，其在钻头旋转期间长度增长。在切割表面附近形成的断屑槽通过弯曲和/或扭曲芯片而向芯片施加应变，从而增加其将会断裂的可能性。在一个方面，在钻孔期间，流体在形成在切割元件前面的流体流道中流动。扭转增加了流体流体中呈现给流体的芯片的表面积，这进一步增加了芯片将破裂的可能性。

10. 发明申请

US20090218098A1 Methods Of Using A Particle Impact Drilling System For Removing Near-Borehole Damage, Milling Objects In A Wellbore, Under Reaming, Coring, Perforating, Assisting Annular Flow, And Associated Methods 有权
标题翻译：使用颗粒冲击钻孔系统去除近井眼损伤的方法，在井眼中，在铰孔，取心，取心，穿孔，辅助环流和关联方法
公开(公告)号：US20090218098A1
公开(公告)日：2009-09-03
申请号：US12363022
申请日：2009-01-30
申请人： Gordon A. Tibbitts , Greg Galloway , Adrian Vuyk, JR. , James Terry
发明人： Gordon A. Tibbitts , Greg Galloway , Adrian Vuyk, JR. , James Terry
IPC分类号： E21B29/00 , E21B43/11 , E21B29/10 , E21B29/06 , E21B43/114 , E21B7/16 , E21B7/18 , E21B7/08 , E21B7/06 , E21B49/02
CPC分类号： E21B7/18 , E21B10/42 , E21B10/602 , E21B21/10
摘要： A particle impact drilling system and method are described. In several exemplary embodiments, the system and method may be a part of, and/or used with, an apparatus or system, methods, to excavate a subterranean formation. The system can including, for example, removing near-borehole damage, casing, window milling, fishing, drilling with casing, under reaming, coring, perforating, effective circulatory density management, assisted annular flow, and directional control. Embodiments of associated systems and methods are also included.
摘要翻译：描述了颗粒冲击钻井系统和方法。在几个示例性实施例中，系统和方法可以是用于挖掘地下地层的装置或系统的方法的一部分和/或与其一起使用。该系统可以包括例如去除近井眼损伤，套管，窗铣，钓鱼，用套管钻孔，扩孔，取芯，穿孔，有效循环密度管理，辅助环形流动和方向控制。还包括相关系统和方法的实施例。

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