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1. 发明授权

US4669556A Drill bit and cutter therefor 失效
标题翻译：钻头和刀具
公开(公告)号：US4669556A
公开(公告)日：1987-06-02
申请号：US693848
申请日：1985-01-25
申请人： John D. Barr , Terry R. Matthias , Malcolm R. Taylor
发明人： John D. Barr , Terry R. Matthias , Malcolm R. Taylor
IPC分类号： E21B10/42 , E21B10/43 , E21B10/56 , E21B10/573 , E21B10/46
CPC分类号： E21B10/43 , E21B10/573
摘要： An elongate cutter for a drag-type drill bit includes a stud defining one end thereof and a cutting formation comprising a cutting face generally adjacent the other end. Length extends from one end to the other, depth extends generally transverse to the cutting face as well as transverse to the length, and width extends transverse to both length and depth. The stud has a cross section transverse to its length such that the cross section cannot be circumscribed by a reference circle whose diameter is equal to the maximum width of the cross section. The cross section also has an assumed section modulus, in the direction of depth, greater than that of the reference circle. The leading side of the cutter comprises a first planar zone adjacent the one end and a second planar zone adjacent the other end, and on which the cutting formation is carried. The maximum lateral dimension of the leading side is generally greater than or equal to the maximum width of the cutter.
摘要翻译：用于拖曳式钻头的细长切割器包括限定其一端的螺柱和包括大致相邻于另一端的切割面的切割结构。长度从一端延伸到另一端，深度通常横切切割面并且横向于长度延伸，宽度横向于长度和深度。螺柱具有横向于其长度的横截面，使得横截面不能被直径等于横截面的最大宽度的参考圆包围。横截面在深度方向上也具有大于参考圆的横截面模数。切割器的前侧包括邻近一端的第一平面区域和与另一端相邻的第二平面区域，并且在其上承载切割结构。前侧的最大横向尺寸通常大于或等于切割器的最大宽度。

2. 发明授权

US4862977A Drill bit and cutter therefor 失效
标题翻译：钻头和刀具
公开(公告)号：US4862977A
公开(公告)日：1989-09-05
申请号：US33072
申请日：1987-03-31
申请人： John D. Barr , Terry R. Matthias , Malcolm R. Taylor
发明人： John D. Barr , Terry R. Matthias , Malcolm R. Taylor
IPC分类号： E21B10/42 , E21B10/43 , E21B10/56 , E21B10/573
CPC分类号： E21B10/43 , E21B10/573
摘要： An elongate cutter for a drag-type drill bit includes a stud defining one end thereof and a cutting formation comprising a cutting face generally adjacent the other end. Length extends from one end to the other, depth extends generally transverse to the cutting face as well as transverse to the length, and width extends transverse to both length and depth. The stud has a cross section transverse to its length such that the cross section cannot be circumscribed by a reference circle whose diameter is equal to the maximum width of the cross section. The cross section also has an assumed section modulus, in the direction of depth, greater than that of the reference circle. The leading side of the cutter comprises a first planar zone adjacent the one end and a second planar zone adjacent the other end, and on which the cutting formation is carried. The maximum lateral dimension of the leading side is generally greater than or equal to the maximum width of the cutter.
摘要翻译：用于拖曳式钻头的细长切割器包括限定其一端的螺柱和包括大致相邻于另一端的切割面的切割结构。长度从一端延伸到另一端，深度通常横切切割面并且横向于长度延伸，宽度横向于长度和深度。螺柱具有横向于其长度的横截面，使得横截面不能被直径等于横截面的最大宽度的参考圆包围。横截面在深度方向上也具有大于参考圆的横截面模数。切割器的前侧包括邻近一端的第一平面区域和与另一端相邻的第二平面区域，并且在其上承载切割结构。前侧的最大横向尺寸通常大于或等于切割器的最大宽度。

3. 发明授权

US4733735A Rotary drill bits 失效
标题翻译：旋转钻头
公开(公告)号：US4733735A
公开(公告)日：1988-03-29
申请号：US913101
申请日：1986-09-29
申请人： John D. Barr , John M. Fuller , Malcolm R. Taylor
发明人： John D. Barr , John M. Fuller , Malcolm R. Taylor
IPC分类号： E21B10/26 , E21B10/56 , E21B10/567 , E21B10/60
CPC分类号： E21B10/567 , E21B10/26 , E21B10/602
摘要： A rotary drill bit comprises a bit body having a leading face and a gauge region, a number of blades on the leading face of the bit body, and a number of cutting elements mounted along each blade. A passage in the bit body supplies drilling fluid to nozzles in the leading face of the bit body for cooling and cleaning the cutting elements. Each nozzle is so oriented, and the surface of the bit body in the region in front of each blade is so shaped, as to promote a vortex flow of drilling fluid around said region, with part of the periphery of the vortex extending across the cutting elements on the blade, so that fluid in the periphery of the vortex passes across the cutting elements mounted on each blade before escaping through an exit channel in the gauge region.
摘要翻译：旋转钻头包括具有前表面和测量区域的钻头体，钻头体的前表面上的多个刀片以及沿着每个刀片安装的多个切割元件。钻头体中的通道为钻头体的前表面的喷嘴提供钻井液，用于冷却和清洁切割元件。每个喷嘴如此取向，并且钻头体在每个叶片前面的区域中的表面是如此成形的，以便促进围绕所述区域的钻井流体的涡流，涡旋的周边的一部分延伸穿过切割使得涡流周边中的流体穿过安装在每个叶片上的切割元件，然后通过测量区域中的出口通道逸出。

4. 发明授权

US4873895A Manufacture of rotary drill bits 失效
标题翻译：旋转钻头的制造
公开(公告)号：US4873895A
公开(公告)日：1989-10-17
申请号：US265237
申请日：1988-10-31
申请人： Malcolm R. Taylor , John D. Barr , John R. Smart
发明人： Malcolm R. Taylor , John D. Barr , John R. Smart
IPC分类号： B23K31/02 , B23P11/00 , E21B10/56 , E21B10/567 , E21B10/62 , F16B11/00
CPC分类号： E21B10/567 , B23K31/025 , B23P11/00 , E21B10/62 , F16B11/006
摘要： There is provided a method of manufacturing a rotary drill bit of the kind including a plurality of cutting structures mounted in sockets in the bit body and projecting from the face of the bit. The method comprises providing a clearance between each cutting structure and its socket and filling the clearance with a settable liquid, the settable liquid being such as to solidify at a temperature less than 400.degree. C. and to retain its integrity, after solidification, at least up to a temperature of 180.degree. C. The solidified liquid acts as a gap filler and provides an interference fit between the cutting structure and the socket. Suitable gap filing settable liquids are: anaerobic adhesive, epoxy resin, dental amalgam, tin/lead solder and bismuth/antimony alloy.
摘要翻译：提供了一种制造这种类型的旋转钻头的方法，该旋转钻头包括安装在钻头体中的插座中并从钻头的表面突出的多个切割结构。该方法包括在每个切割结构和其插座之间提供间隙并用可固化液体填充间隙，可凝固液体在低于400℃的温度下固化并且在固化之后保持其完整性至少达到180℃的温度。凝固的液体充当间隙填料并且在切割结构和插座之间提供过盈配合。合适的间隙填充可固化液体是：厌氧胶，环氧树脂，牙科汞合金，锡/铅焊料和铋/锑合金。

5. 发明授权

US4697654A Rotary drill bits 失效
标题翻译：旋转钻头
公开(公告)号：US4697654A
公开(公告)日：1987-10-06
申请号：US754570
申请日：1985-07-12
申请人： John D. Barr , Malcolm R. Taylor
发明人： John D. Barr , Malcolm R. Taylor
IPC分类号： E21B10/46 , E21B10/42 , E21B10/43 , E21B10/60
CPC分类号： E21B10/43 , E21B10/60
摘要： A rotary drill bit for use in drilling deep holes in subsurface formations comprises a bit body having a leading face and a gauge region, a plurality of cutting elements mounted at the surface of the leading face of the bit body, a passage in the bit body for supplying drilling fluid to a plurality of openings in the leading face of the bit body, and one or more junk slots in the gauge region of the bit body, whereby drilling fluid emerging from the openings flow over the leading face of the bit body and past the cutting elements thereon, so as to cool and clean the cutting elements before exiting through the junk slot. At least one of the openings is located in an area of the leading face adjacent the gauge region, and is angularly spaced from the nearest associated junk slot, the flow path between the opening and the junk slot being such that, in normal use of the bit, drilling fluid flowing from the opening to that junk slot flows substantially peripherally along an outer peripheral region of the leading face of the bit, adjacent the gauge region, so as to flow past cutting elements in that peripheral region.
摘要翻译：一种用于钻进地下构造中的深孔的旋转钻头，包括钻头体，其具有前表面和测量区域，多个切削元件安装在钻头体的前表面的表面，钻头体中的通道用于向钻头体的前表面中的多个开口提供钻井流体，以及钻头体的表面区域中的一个或多个垃圾槽，由此从开口流出的钻井流体流过钻头体的前表面，通过其上的切割元件，以便在通过垃圾槽离开之前冷却和清洁切割元件。至少一个开口位于邻近测量区域的引导面的区域中，并且与最近的相关联的垃圾槽成角度地间隔开，开口和垃圾槽之间的流动路径使得在正常使用从开口流向该垃圾槽的钻井流体沿钻头的前端面的外围区域大致周边流动，邻近测量区域，以便流过该周边区域中的切削元件。

6. 发明授权

US5967246A Rotary drill bits 有权
公开(公告)号：US5967246A
公开(公告)日：1999-10-19
申请号：US208170
申请日：1998-12-09
申请人： Douglas Caraway , John Hayward , Malcolm R. Taylor , Tom Scott Roberts , Steven Taylor , Graham Watson
发明人： Douglas Caraway , John Hayward , Malcolm R. Taylor , Tom Scott Roberts , Steven Taylor , Graham Watson
IPC分类号： E21B10/00 , E21B10/26 , E21B10/54 , E21B10/55 , E21B10/60 , E21B17/10
CPC分类号： E21B10/55 , E21B10/003 , E21B10/26 , E21B10/60 , E21B10/602 , E21B17/1092
摘要： A rotary drill bit for use in drilling holes in subsurface formations comprises a bit body having a leading face and a gauge region, a number of blades formed on the leading face of the bit and extending outwardly away from the axis of the bit so as to define between the blades a number of fluid channels leading towards the gauge region, a number of cutting elements mounted side-by-side along each blade, and a number of nozzles in the bit body for supplying drilling fluid to the fluid channels for cleaning and cooling the cutting elements. In each of the fluid channels, adjacent the gauge region, is an opening into an enclosed passage which passes internally through the bit body to an outlet which, in use, communicates with the annulus between the drill string and the wall of the borehole being drilled. The gauge region of the drill bit comprises a substantially continuous bearing surface which extends around the whole of the gauge region.

7. 发明授权

US5651421A Rotary drill bits 失效
标题翻译：旋转钻头
公开(公告)号：US5651421A
公开(公告)日：1997-07-29
申请号：US541771
申请日：1995-10-10
申请人： Alex Newton , Malcolm R. Taylor , John M. Fuller , Andrew Murdock
发明人： Alex Newton , Malcolm R. Taylor , John M. Fuller , Andrew Murdock
IPC分类号： E21B10/42 , E21B10/43 , E21B10/54 , E21B10/55 , E21B10/60 , E21B10/16
CPC分类号： E21B10/43 , E21B10/55 , E21B10/602
摘要： A rotary drill bit for drilling holes in subsurface formations comprises a bit body having a shank for connection to a drill string, a number of circumferentially spaced blades on the bit body each extending outwardly away from the central axis of rotation of the bit, a number of cutters mounted side-by-side along each blade, and a passage in the bit body for supplying drilling fluid to the surface of the bit for cleaning and cooling the cutters. The blades comprise alternating primary and secondary blades. The cutters on the primary blades are primary cutters which are located at different radial distances from the bit axis so as to define a cutting profile which, in use, covers substantially the whole of the bottom of the bore hole being drilled. At least the majority of the cutters on the secondary blades are secondary cutters each of which is located at substantially the same radial distance from the bit axis as an associated primary cutter on the preceding primary blade.
摘要翻译：用于在地下构造中钻孔的旋转钻头包括具有用于连接到钻柱的柄的钻头体，钻头体上的多个周向间隔开的叶片每个从钻头的中心旋转轴线向外延伸，沿着每个叶片并排安装的切割器，以及钻头体中的用于向钻头表面提供钻井液的通道，用于清洁和冷却切割器。叶片包括交替的主叶片和次叶片。主叶片上的切割器是位于与钻头轴线不同的径向距离处的初级切割器，以便限定切割轮廓，该切割轮廓在使用中基本覆盖被钻孔的整个底部的底部。至少大多数次级叶片上的切割器是二次切割器，每个切割器位于与前一主叶片上的相关联的主切割器相比从钻头轴线基本相同的径向距离处。

8. 发明授权

US5222566A Rotary drill bits and methods of designing such drill bits 失效
标题翻译：旋转钻头和设计这种钻头的方法
公开(公告)号：US5222566A
公开(公告)日：1993-06-29
申请号：US828425
申请日：1992-01-31
申请人： Malcolm R. Taylor , Andrew Keohane
发明人： Malcolm R. Taylor , Andrew Keohane
IPC分类号： E21B10/42 , E21B10/43 , E21B10/60
CPC分类号： E21B10/43 , E21B10/602
摘要： A rotary drill bit comprises a bit body having a shank for connection to a drill string, a plurality of cutter assemblies mounted on the bit body, and a passage in the bit body for supplying drilling fluid to the surface of the bit. Certain cutter assemblies on the bit body are adapted to exhibit a volume factor which is significantly greater than the volume factor of other cutter assemblies on the bit body, with increase of rate of penetration, and at least the majority of said cutter assemblies of higher volume factor are better adapted for cutting softer formations than at least the majority of said other cutter assemblies. The bit therefore tends to act as a "heavy set" drill bit at lower rates of penetration in hard formations, and as a "light set" drill bit at higher rates of penetration in softer formations, and therefore tends to drill each formation more efficiently.

9. 发明授权

US5174396A Cutter assemblies for rotary drill bits 失效
标题翻译：旋转钻头组合切割机组
公开(公告)号：US5174396A
公开(公告)日：1992-12-29
申请号：US265018
申请日：1988-10-31
申请人： Malcolm R. Taylor , Joseph A. Gasan
发明人： Malcolm R. Taylor , Joseph A. Gasan
IPC分类号： E21B10/56 , E21B10/567
CPC分类号： E21B10/5673
摘要： A cutter assembly for a rotary drill bit comprises an elongate stud to be received in a socket in the surface of the bit body, the stud having mounted at one end thereof a preform cutting element. At least a major part of the stud is generally in the form of a cylinder of a circular cross-section having two symmetrically disposed flats extending longitudinally thereof, the flats being inclined towards the longitudinal axis of the stud as they extend towards the end of the stud remote from the cutting element. The flats allow the cutter assemblies to be packed together more closely side-by-side across a convexly curved surface of the body of the drill bit.
摘要翻译：用于旋转钻头的切割器组件包括待接收在钻头体的表面中的插座中的细长螺柱，所述螺柱在其一端安装有预成型件切割元件。螺柱的至少主要部分通常为圆形横截面的形式，其具有两个对称设置的纵向延伸的平面，当它们朝着螺栓的端部延伸时，平面朝向螺柱的纵向轴线倾斜螺柱远离切割元件。这些平面允许刀具组件在钻头本体的凸形弯曲表面上更紧密地并排堆放在一起。

10. 发明授权

US5992547A Rotary drill bits 有权
公开(公告)号：US5992547A
公开(公告)日：1999-11-30
申请号：US208197
申请日：1998-12-09
申请人： Douglas Caraway , John Hayward , Malcolm R. Taylor , Tom Scott Roberts , Steven Taylor , Graham R Watson
发明人： Douglas Caraway , John Hayward , Malcolm R. Taylor , Tom Scott Roberts , Steven Taylor , Graham R Watson
IPC分类号： E21B10/00 , E21B10/26 , E21B10/54 , E21B10/55 , E21B10/60 , E21B17/10
CPC分类号： E21B10/55 , E21B10/003 , E21B10/26 , E21B10/60 , E21B10/602 , E21B17/1092
摘要： A rotary drill bit for use in drilling holes in subsurface formations comprises a bit body having a leading face and a gauge region, a number of blades formed on the leading face of the bit and extending outwardly away from the axis of the bit so as to define between the blades a number of fluid channels leading towards the gauge region, a number of cutting elements mounted side-by-side along each blade, and a number of nozzles in the bit body for supplying drilling fluid to the fluid channels for cleaning and cooling the cutting elements. In each of the fluid channels, adjacent the gauge region, is an opening into an enclosed passage which passes internally through the bit body to an outlet which, in use, communicates with the annulus between the drill string and the wall of the borehole being drilled. The gauge region of the drill bit comprises a substantially continuous bearing surface which extends around the whole of the gauge region.

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