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21. 发明授权

US5447208A Superhard cutting element having reduced surface roughness and method of modifying 失效
标题翻译：超硬切削元件具有减小的表面粗糙度和修改方法
公开(公告)号：US5447208A
公开(公告)日：1995-09-05
申请号：US156086
申请日：1993-11-22
申请人： Jeffrey B. Lund , Redd H. Smith
发明人： Jeffrey B. Lund , Redd H. Smith
IPC分类号： B23B27/14 , B24B1/00 , B24B3/60 , B24B53/02 , E21B10/56 , E21B10/567 , E21B10/46 , B23P9/00
CPC分类号： E21B10/567 , B23B27/145 , B24B1/00 , B24B53/02 , E21B10/5673 , B23B2226/315 , E21B2010/566 , Y10T407/27
摘要： A superhard cutting element having a polished, low friction, substantially planar cutting face with a surface finish roughness of 10 .mu. in. or less and preferably 0.5 .mu. in. or less.
摘要翻译：具有抛光的，低摩擦的，基本上平面的切割面的超硬切割元件，其表面光洁度为10微米或更小，优选为0.5微米或更小。

22. 发明授权

US07954380B2 Rotary drill bits and systems for inspecting rotary drill bits 有权
标题翻译：用于检查旋转钻头的旋转钻头和系统
公开(公告)号：US07954380B2
公开(公告)日：2011-06-07
申请号：US12553655
申请日：2009-09-03
申请人： Jeffrey B. Lund , Nicholas J. Lyons , Eric C. Sullivan , Terry D. Watts
发明人： Jeffrey B. Lund , Nicholas J. Lyons , Eric C. Sullivan , Terry D. Watts
IPC分类号： G01N29/06 , G01N29/265
CPC分类号： G01N29/04 , G01N29/265 , G01N29/27 , G01N29/275 , G01N29/28 , G01N2291/044 , G01N2291/045 , G01N2291/101 , G01N2291/2634 , G01N2291/2636 , G01N2291/267 , G01N2291/2698
摘要： A method for conducting nondestructive internal inspection of a rotary drill bit used for drilling subterranean formations comprises communicating ultrasonic waves into a drill bit and detecting ultrasonic waves that are reflected by at least a portion of the drill bit. In some embodiments, the waves may be directed into the drill bit from within a longitudinal bore thereof. Reflected waves also may be detected from within the bore. The methods may be used to develop threshold acceptance criteria for classifying drill bits as acceptable or unacceptable to prevent catastrophic failures of drill bits during use. Systems and apparatuses are disclosed for conducting nondestructive ultrasonic inspection of a drill bit used for drilling subterranean formations. The systems and apparatuses may comprise an ultrasonic probe configured for insertion within an internal longitudinal bore of a drill bit. Drill bits are disclosed that are configured to facilitate nondestructive ultrasonic inspection thereof.
摘要翻译：用于对用于钻探地下地层的旋转钻头进行非破坏性内部检查的方法包括将超声波传播到钻头中并检测由钻头的至少一部分反射的超声波。在一些实施例中，波浪可以从其纵向孔内引导到钻头中。也可以从孔内检测出反射波。这些方法可用于制定用于将钻头分类为可接受或不可接受的阈值接受标准，以防止在使用期间钻头的灾难性故障。公开了用于对用于钻探地下地层的钻头进行非破坏性超声波检测的系统和装置。所述系统和装置可以包括构造成用于插入钻头的内部纵向孔内的超声波探头。公开了钻头，其被配置为便于其非破坏性超声波检查。

23. 发明申请

US20090320584A1 ROTARY DRILL BITS AND SYSTEMS FOR INSPECTING ROTARY DRILL BITS 有权
标题翻译：用于检查旋转钻头的旋转钻头和系统
公开(公告)号：US20090320584A1
公开(公告)日：2009-12-31
申请号：US12553655
申请日：2009-09-03
申请人： Jeffrey B. Lund , Nicholas J. Lyons , Eric C. Sullivan , Terry D. Watts
发明人： Jeffrey B. Lund , Nicholas J. Lyons , Eric C. Sullivan , Terry D. Watts
IPC分类号： E21B10/42 , E21B10/00 , E21B47/024
CPC分类号： G01N29/04 , G01N29/265 , G01N29/27 , G01N29/275 , G01N29/28 , G01N2291/044 , G01N2291/045 , G01N2291/101 , G01N2291/2634 , G01N2291/2636 , G01N2291/267 , G01N2291/2698
摘要： A method for conducting nondestructive internal inspection of a rotary drill bit used for drilling subterranean formations comprises communicating ultrasonic waves into a drill bit and detecting ultrasonic waves that are reflected by at least a portion of the drill bit. In some embodiments, the waves may be directed into the drill bit from within a longitudinal bore thereof. Reflected waves also may be detected from within the bore. The methods may be used to develop threshold acceptance criteria for classifying drill bits as acceptable or unacceptable to prevent catastrophic failures of drill bits during use. Systems and apparatuses are disclosed for conducting nondestructive ultrasonic inspection of a drill bit used for drilling subterranean formations. The systems and apparatuses may comprise an ultrasonic probe configured for insertion within an internal longitudinal bore of a drill bit. Drill bits are disclosed that are configured to facilitate nondestructive ultrasonic inspection thereof.
摘要翻译：用于对用于钻探地下地层的旋转钻头进行非破坏性内部检查的方法包括将超声波传播到钻头中并检测由钻头的至少一部分反射的超声波。在一些实施例中，波浪可以从其纵向孔内引导到钻头中。也可以从孔内检测出反射波。这些方法可用于制定用于将钻头分类为可接受或不可接受的阈值接受标准，以防止在使用期间钻头的灾难性故障。公开了用于对用于钻探地下地层的钻头进行非破坏性超声波检测的系统和装置。所述系统和装置可以包括构造成用于插入钻头的内部纵向孔内的超声波探头。公开了钻头，其被配置为便于其非破坏性超声波检查。

24. 发明授权

US07621351B2 Reaming tool suitable for running on casing or liner 有权
标题翻译：铰孔工具适用于在套管或衬管上运行
公开(公告)号：US07621351B2
公开(公告)日：2009-11-24
申请号：US11747651
申请日：2007-05-11
申请人： Lester I. Clark , John C. Thomas , Jeffrey B. Lund , Eric E. McClain
发明人： Lester I. Clark , John C. Thomas , Jeffrey B. Lund , Eric E. McClain
IPC分类号： E21B7/28
CPC分类号： E21B10/26 , E21B7/20 , E21B10/43 , E21B17/14
摘要： A reaming tool includes a tubular body having a nose portion with a concave center. A plurality of blades defining junk slots therebetween extend axially behind the nose and taper outwardly from the exterior of the tubular body. Rotationally leading edges of the blades carry a plurality of cutting elements from the axially leading ends. Selected surfaces and edges of the blades bear tungsten carbide, which may comprise crushed tungsten carbide. The shell of the nose is configured to ensure drillout from the centerline thereof toward the side wall of the tubular body. A method of drilling out a reaming tool is also disclosed.
摘要翻译：扩孔工具包括具有凹部中心的鼻部的管状体。在其间限定垃圾槽的多个叶片在鼻部之间轴向延伸并且从管状体的外部向外逐渐变细。叶片的旋转前缘从轴向前端承载多个切割元件。叶片的选定表面和边缘承载碳化钨，其可以包括破碎的碳化钨。鼻子的外壳被配置成确保从其中心线朝向管状体的侧壁排出。还公开了一种钻出铰孔工具的方法。

25. 发明授权

US06711969B2 Methods for designing rotary drill bits exhibiting sequences of substantially continuously variable cutter backrake angles 有权
标题翻译：设计旋转钻头的方法，其显示基本上连续可变的切割器反向角度的顺序
公开(公告)号：US06711969B2
公开(公告)日：2004-03-30
申请号：US10328615
申请日：2002-12-23
申请人： Matthew J. Meiners , Jeffrey B. Lund , Thomas M. Harris
发明人： Matthew J. Meiners , Jeffrey B. Lund , Thomas M. Harris
IPC分类号： B03C300
CPC分类号： E21B10/43 , E21B10/55
摘要： A rotary-type earth-boring drag bit with cutters oriented at varied rake angles and methods for designing such drag bits. Specifically, cutters that are located sequentially adjacent radial distances from a longitudinal axis of the drill bit have cutting faces that are oriented at rake angles that differ from one another. These cutters may be located on the same blade of the drag bit or on different blades of the drag bit. The rake angles at which the cutting faces of these cutters are oriented may be based, at least in part, on the relative radial distances these cutters are spaced from the longitudinal axis of the drag bit, on the vertical positions of these cutters along the longitudinal axis of the drag bit, or in response to actual or simulated evaluations of the use of the drag bit to drill a subterranean formation.
摘要翻译：一种旋转式镗孔钻头，其刀具以不同的前角定向，并且用于设计这种拖曳钻头的方法。具体来说，与钻头的纵向轴线顺序地相邻的径向距离的切割器具有在彼此不同的前角处定向的切割面。这些刀具可以位于拖曳钻头的相同刀片上或者位于不同刀片上的阻力钻头上。这些切割器的切割面的取向角可以至少部分地基于相对径向距离，这些切割器与拖曳钻头的纵向轴线在这些切割器沿着纵向的垂直位置间隔开或者响应于使用拖曳钻头来钻取地层的实际或模拟评估。

26. 发明授权

US6112836A Rotary drill bits employing tandem gage pad arrangement 失效
标题翻译：旋转钻头采用串联量具垫排列
公开(公告)号：US6112836A
公开(公告)日：2000-09-05
申请号：US924935
申请日：1997-09-08
申请人： John R. Spaar , James A. Norris , Christopher C. Beuershausen , Rudolf C. O. Pessier , Michael P. Ohanian , Roland Illerhaus , Jeffrey B. Lund , Michael L. Doster
发明人： John R. Spaar , James A. Norris , Christopher C. Beuershausen , Rudolf C. O. Pessier , Michael P. Ohanian , Roland Illerhaus , Jeffrey B. Lund , Michael L. Doster
IPC分类号： E21B7/08 , E21B10/46 , E21B17/10
CPC分类号： E21B17/1092 , E21B10/46
摘要： A rotary drag bit being suitable for directional drilling. The bit includes a bit body from which extend radially-oriented blades carrying PDC cutters. The blades extend to primary gage pads, above which secondary gage pads are either longitudinally spaced or rotationally spaced, or both, defining a gap or discontinuity between the primary and secondary gage pads through which drilling fluid from adjacent junk slots may communicate laterally or circumferentially. Longitudinally leading edges of the secondary gage pads may carry cutters for smoothing the sidewall of the borehole. The tandem primary and secondary gage pads provide enhanced bit stability and reduced side cutting tendencies. The discontinuities between the primary and secondary gage pads enhance fluid flow from the bit face to the borehole annulus above the bit, promoting formation cuttings removal. The tandem gage arrangement also has utility in conventional bits not designed specifically for directional drilling.
摘要翻译：旋转拖曳钻头适用于定向钻孔。该钻头包括一个承载PDC切割器的径向定向刀片的位体。叶片延伸到主量规焊盘，在其上方，二次量规焊盘沿纵向间隔开或旋转间隔开，或两者限定了初级和次级量规焊盘之间的间隙或不连续性，通过该间隙或不连续性，来自相邻垃圾槽的钻井液体可横向或周向地连通。二次测量垫的纵向前缘可携带用于使钻孔侧壁平滑的切割器。串联一次和二次测量垫提供增强的位稳定性和减少的侧切倾向。主和二次测量垫之间的不连续性增强了从钻头面到钻头上方的钻孔环之间的流体流动，促进了去除切屑。串联量规布置也可用于不专门用于定向钻孔的常规钻头中。

27. 发明授权

US5967250A Modified superhard cutting element having reduced surface roughness and method of modifying 失效
标题翻译：具有降低的表面粗糙度和改性方法的改性超硬切割元件
公开(公告)号：US5967250A
公开(公告)日：1999-10-19
申请号：US872207
申请日：1997-06-10
申请人： Jeffrey B. Lund , Redd H. Smith , Trent N. Butcher
发明人： Jeffrey B. Lund , Redd H. Smith , Trent N. Butcher
IPC分类号： B23B27/14 , B24B1/00 , B24B3/60 , B24B53/02 , E21B10/56 , E21B10/567 , E21B10/46 , B23P9/00
CPC分类号： E21B10/567 , B23B27/145 , B24B1/00 , B24B53/02 , E21B10/5673 , B23B2226/315 , E21B2010/566 , Y10T407/27
摘要： A superhard cutting element having a polished, low friction 1 substantially planar cutting face with a surface finish roughness of 10 .mu. in. or less and preferably 0.5 .mu. in. or less. A chamfered cutting edge and side surface of the superhard material table of the same surface finish roughness are also disclosed. The surface roughness of the aforementioned superhard material table portions may be reduced by mechanically smoothing and polishing according to one of several variations of the method of the invention.
摘要翻译：具有抛光的，低摩擦的1个基本上平面的切割面的超硬切割元件，表面光洁度为10微米或更小，优选为0.5微米或更小。还公开了具有相同表面光洁度粗糙度的超硬材料台的倒角切削刃和侧表面。上述超硬材料台部的表面粗糙度可以通过根据本发明的方法的几个变化之一的机械平滑和抛光来减少。

28. 发明授权

US5653300A Modified superhard cutting elements having reduced surface roughness method of modifying, drill bits equipped with such cutting elements, and methods of drilling therewith 失效
标题翻译：具有降低的表面粗糙度的改进的超硬切削元件，改进方法，配备有这种切削元件的钻头以及与其一起钻孔的方法
公开(公告)号：US5653300A
公开(公告)日：1997-08-05
申请号：US480623
申请日：1995-06-07
申请人： Jeffrey B. Lund , Redd H. Smith
发明人： Jeffrey B. Lund , Redd H. Smith
IPC分类号： B23B27/14 , B24B1/00 , B24B3/60 , B24B53/02 , E21B10/56 , E21B10/567 , F21B10/46 , B23P9/00
CPC分类号： E21B10/567 , B23B27/145 , B24B1/00 , B24B53/02 , E21B10/5673 , B23B2226/315 , E21B2010/566 , Y10T407/27
摘要： A superhard cutting element having a polished, low friction substantially planar cutting face with a surface finish roughness of 10.mu. in. or less and preferably 0.5 .mu. in. or less. A chamfered cutting edge and side surface of the superhard material table of the same surface finish roughness are also disclosed. The surface roughness of the aforementioned superhard material table portions may be reduced by mechanically smoothing and polishing according to one of several variations of the method of the invention.
摘要翻译：具有抛光的，低摩擦的基本上平面的切割面的超硬切割元件，表面光洁度粗糙度为10微米或更小，优选为0.5微米或更小。还公开了具有相同表面光洁度粗糙度的超硬材料台的倒角切削刃和侧表面。上述超硬材料台部的表面粗糙度可以通过根据本发明的方法的几个变化之一的机械平滑和抛光来减少。

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