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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
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。
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2.发明授权Abrasive-impregnated cutting structure having anisotropic wear resistance and drag bit including same 有权具有各向异性耐磨性的磨料浸渍切割结构和包括其的阻力钻头公开(公告)号：US08333814B2
公开(公告)日：2012-12-18
申请号：US12396556
申请日：2009-03-03
摘要： An abrasive-impregnated cutting structure for use in drilling a subterranean formation is disclosed. The abrasive-impregnated cutting structure may comprise a plurality of abrasive particles dispersed within a substantially continuous matrix, wherein the abrasive-impregnated cutting structure exhibits an anisotropic wear resistance. One or more of the amount, average size, composition, properties, shape, quality, strength, and concentration of the abrasive particles may vary within the abrasive-impregnated cutting structure. Anisotropic wear resistance may relate to a selected direction, such as, for example, one or more of an expected direction of engagement of the abrasive-impregnated cutting structure with the subterranean formation and an anticipated wear direction. Anisotropic wear resistance of an abrasive-impregnated cutting structure may be configured for forming or retaining a formation-engaging leading edge thereof. A rotary drag bit including at least one abrasive-impregnated cutting structure is disclosed.
摘要翻译： 公开了一种用于钻探地下地层的磨料浸渍切割结构。 磨料浸渍的切割结构可以包括分散在基本上连续的基质中的多个磨料颗粒，其中磨料浸渍的切割结构呈现各向异性的耐磨性。 磨料颗粒的数量，平均尺寸，组成，性能，形状，质量，强度和浓度中的一种或多种可以在磨料浸渍的切割结构内变化。 各向异性耐磨性可以涉及所选择的方向，例如，磨料浸渍的切割结构与地层的预期接合方向中的一个或多个以及预期的磨损方向。 磨料浸渍的切割结构的各向异性耐磨性可以被构造成用于形成或保持其与地层接合的前缘。 公开了一种包括至少一个磨料浸渍的切割结构的旋转牵引钻头。
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3.发明授权Abrasive-impregnated cutting structure having anisotropic wear resistance and drag bit including same 有权具有各向异性耐磨性的磨料浸渍切割结构和包括其的阻力钻头公开(公告)号：US07497280B2
公开(公告)日：2009-03-03
申请号：US11044782
申请日：2005-01-27
IPC分类号： E21B10/46
摘要： An abrasive-impregnated cutting structure for use in drilling a subterranean formation is disclosed. The abrasive-impregnated cutting structure may comprise a plurality of abrasive particles dispersed within a substantially continuous matrix, wherein the abrasive-impregnated cutting structure exhibits an anisotropic wear resistance. One or more of the amount, average size, composition, properties, shape, quality, strength, and concentration of the abrasive particles may vary within the abrasive-impregnated cutting structure. Anisotropic wear resistance may relate to a selected direction, such as, for example, one or more of an expected direction of engagement of the abrasive-impregnated cutting structure with the subterranean formation and an anticipated wear direction. Anisotropic wear resistance of an abrasive-impregnated cutting structure may be configured for forming or retaining a formation-engaging leading edge thereof. A rotary drag bit including at least one abrasive-impregnated cutting structure is disclosed.
摘要翻译： 公开了一种用于钻探地下地层的磨料浸渍切割结构。 磨料浸渍的切割结构可以包括分散在基本上连续的基质中的多个磨料颗粒，其中磨料浸渍的切割结构呈现各向异性的耐磨性。 磨料颗粒的数量，平均尺寸，组成，性能，形状，质量，强度和浓度中的一种或多种可以在磨料浸渍的切割结构内变化。 各向异性耐磨性可以涉及所选择的方向，例如，磨料浸渍的切割结构与地层的预期接合方向中的一个或多个以及预期的磨损方向。 磨料浸渍的切割结构的各向异性耐磨性可以被构造成用于形成或保持其与地层接合的前缘。 公开了一种包括至少一个磨料浸渍的切割结构的旋转牵引钻头。
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公开(公告)号：US20080236900A1
公开(公告)日：2008-10-02
申请号：US12134489
申请日：2008-06-06
IPC分类号： E21B10/46
CPC分类号： E21B10/5673 , E21B10/42 , E21B10/55 , E21B10/573 , E21B10/5735 , E21B10/633 , E21B2010/562 , E21B2010/624
摘要： A cutting element assembly for use on a rotary drill bit for forming a borehole in a subterranean formation. A cutting element assembly includes a cutting element having a substrate. The cutting element assembly additionally includes a superabrasive material bonded to the substrate. The substrate extends from an end surface to a back surface. A base member is also coupled to the back surface of the substrate. Additionally, a recess is defined in the base member and a structural element is coupled to the base member. The cutting element assembly also includes a biasing element configured to selectively bias the structural element.
摘要翻译： 一种在旋转钻头上用于在地层中形成钻孔的切割元件组件。 切割元件组件包括具有基底的切割元件。 切割元件组件另外包括结合到基底的超级磨料。 基板从端面延伸到后表面。 基底构件也耦合到衬底的背面。 此外，在基底构件中限定凹部，并且结构元件联接到基底构件。 切割元件组件还包括被配置为选择性地偏置结构元件的偏置元件。
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5.发明授权Superabrasive cutting elements with cutting edge geometry having enhanced durability, method of producing same, and drill bits so equipped 有权具有切削刃几何形状的超级磨料切削元件具有增强的耐久性，其制造方法以及如此设备的钻头公开(公告)号：US06935444B2
公开(公告)日：2005-08-30
申请号：US10373160
申请日：2003-02-24
申请人： Jeffrey B. Lund , Danny E. Scott , Marcus R. Skeem
发明人： Jeffrey B. Lund , Danny E. Scott , Marcus R. Skeem
IPC分类号： E21B10/56 , E21B10/567 , E21B10/36
CPC分类号： E21B10/567
摘要： A superabrasive cutting element including a diamond or other superabrasive material table having a peripheral cutting edge defined by at least two adjacent chamfers having an arcuate surface substantially tangent to each of the at least two chamfers interposed therebetween. Methods of producing such superabrasive cutting elements and drill bits equipped with such superabrasive cutting elements are also disclosed.
摘要翻译： 一种超研磨切割元件，包括金刚石或其它超级磨料材料台，其具有由至少两个相邻倒角限定的周边切削刃，所述外周切削刃具有与插入其中的所述至少两个倒角中的每一个基本相切的弓形表面。 还公开了生产这种超研磨切割元件的方法和配备有这种超级磨料切割元件的钻头。
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6.发明申请CUTTING ELEMENTS CONFIGURED TO GENERATE SHEAR LIPS DURING USE IN CUTTING, EARTH BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND METHODS OF FORMING AND USING SUCH CUTTING ELEMENTS AND EARTH BORING TOOLS 有权切割元件在切割中使用时产生切割效果，包括这种切割元件的地面钻孔工具，以及形成和使用这种切割元件和地球钻孔工具的方法公开(公告)号：US20110088950A1
公开(公告)日：2011-04-21
申请号：US12896587
申请日：2010-10-01
CPC分类号： E21B10/5735 , B22F2998/00 , B24D3/10 , B24D18/0009 , C23C30/005 , E21B10/43 , E21B10/567 , C22C26/00
摘要： Cutting elements for earth-boring tools may generate a shear lip at a wear scar thereon during cutting. A diamond table may exhibit a relatively high wear resistance, and an edge of the diamond table may be chamfered, the combination of which may result in the formation of a shear lip. Cutting elements may comprise multi-layer diamond tables that result in the formation of a shear lip during cutting. Earth-boring tools include such cutting elements. Methods of forming cutting elements may include selectively designing and configuring the cutting elements to form a shear lip. Methods of cutting a formation using an earth-boring tool include cutting the formation with a cutting element on the tool, and generating a shear lip at a wear scar on the cutting element. The cutting element may be configured such that the shear lip comprises diamond material of the cutting element.
摘要翻译： 用于钻孔工具的切割元件可能在切割期间在其上的磨损疤痕上产生剪切唇。 钻石台可能具有较高的耐磨性，并且金刚石台的边缘可能会倒角，其结合可能导致形成剪切唇。 切割元件可以包括导致在切割期间形成剪切唇缘的多层金刚石台。 钻孔工具包括这样的切割元件。 形成切割元件的方法可以包括选择性地设计和配置切割元件以形成剪切唇缘。 使用钻孔工具切割地层的方法包括用工具上的切割元件切割地层，并在切割元件上产生磨损痕迹的剪切唇缘。 切割元件可以被配置成使得剪切唇缘包括切割元件的金刚石材料。
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公开(公告)号：US07631560B2
公开(公告)日：2009-12-15
申请号：US11787693
申请日：2007-04-17
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。
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8.发明授权Diamond cutters having modified cutting edge geometry and drill bit mounting arrangement therefor 失效金刚石切割机具有改进的切削刃几何形状和钻头安装布置
公开(公告)号：US5437343A
公开(公告)日：1995-08-01
申请号：US893704
申请日：1992-06-05
申请人： Craig H. Cooley , Jeffrey B. Lund , Redd H. Smith
发明人： Craig H. Cooley , Jeffrey B. Lund , Redd H. Smith
IPC分类号： E21B10/56 , E21B10/567 , E21B10/46
CPC分类号： E21B10/5673
摘要： A diamond cutting element including a substantially planar diamond table having a periphery defined by a multiple chamfer. The angle of the outermost chamfer may be oriented to provide a bearing surface on the cutting element at the place of engagement with the formation being drilled.
摘要翻译： 一种金刚石切割元件，包括具有由多个倒角限定的周边的基本平坦的金刚石台。 最外斜面的角度可以被定向成在切割元件上提供与正在钻孔的地层的接合位置处的支承表面。
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公开(公告)号：US4919013A
公开(公告)日：1990-04-24
申请号：US244122
申请日：1988-09-14
申请人： Redd H. Smith , Jeffrey B. Lund
发明人： Redd H. Smith , Jeffrey B. Lund
摘要： A rotary drill bit and process of fabrication in which internal fluid passages and watercourses of the bit are lined with a hard metal matrix material which renders the fluid passages more resistant to the erosive forces of the drilling fluid is provided. Also, elements such as lands for cutter element mountings, sockets, ridges, shoulders and the like on the exterior surface of the bit can be fabricated of a hard abrasion and erosion resistant material and incorporated into the bit body during fabrication. The process includes the steps of providing a hollow mold for molding at least a portion of the drill bit and positioning one or more flexible or moldable tubular elements which correspond to the internal watercourses in the mold. The elements are fabricated of a hard metal powdered material dispersed in a polymeric binder. A bit blank is then positioned at least partially within the mold and the mold packed with a metal matrix material which forms the body of the bit. The metal matrix material and the tubular elements are infiltrated with a binder in a furnace to form the bit, with the heat from the furnace burning out the polymeric binder in the tubular elements.
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公开(公告)号：US07942218B2
公开(公告)日：2011-05-17
申请号：US12134489
申请日：2008-06-06
IPC分类号： E21B10/42
CPC分类号： E21B10/5673 , E21B10/42 , E21B10/55 , E21B10/573 , E21B10/5735 , E21B10/633 , E21B2010/562 , E21B2010/624
摘要： A cutting element assembly for use on a rotary drill bit for forming a borehole in a subterranean formation. A cutting element assembly includes a cutting element having a substrate. The cutting element assembly additionally includes a superabrasive material bonded to the substrate. The substrate extends from an end surface to a back surface. A base member is also coupled to the back surface of the substrate. Additionally, a recess is defined in the base member and a structural element is coupled to the base member. The cutting element assembly also includes a biasing element configured to selectively bias the structural element.
摘要翻译： 一种在旋转钻头上用于在地层中形成钻孔的切割元件组件。 切割元件组件包括具有基底的切割元件。 切割元件组件另外包括结合到基底的超级磨料。 基板从端面延伸到后表面。 基底构件也耦合到衬底的背面。 此外，在基底构件中限定凹部，并且结构元件联接到基底构件。 切割元件组件还包括被配置为选择性地偏置结构元件的偏置元件。
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