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51.发明授权
公开(公告)号：EP0303419B1
公开(公告)日：1990-11-14
申请号：EP88307287.8
申请日：1988-08-05
发明人： Kar, Naresh Jitendra
CPC分类号： C21D1/09 , B23K26/32 , B23K26/34 , B23K35/0244 , B23K35/30 , B23K35/3033 , B23K35/3046 , B23K35/327 , B23K2201/002 , B23K2203/50 , B23K2203/52 , C21D9/22 , E21B10/22 , E21B10/50 , E21B10/52 , Y10S148/903 , Y10S148/905
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公开(公告)号：EP0237867A3
公开(公告)日：1989-02-08
申请号：EP87103056.5
申请日：1987-03-04
发明人： Völz, Dieter , Illerhaus, Roland
IPC分类号： E21B10/20 , E21B10/62 , E21B10/52 , E21B10/56 , E21B12/02 , E21B10/60 , E21B10/18 , E21B10/32
摘要： A roller cone bit may (10) be used as a rotating drag bit by treating the roller cones as carriers (12) for a plurality of distinguishable types of drag cutters (14,16). The roller cones (12) are each coupled to a mechanism (32,46,56) which selectively allows rotation of the roller cones (12). The roller cones (12) are otherwise fixed and as the bit (10) is rotated, the drag cutters (14) are brought into operative engagement with the rock formation. However, where the roller cones are selectively allowed to rotate, rotation of the drag bit (10) rotates the roller cones (12) to thereby bring a second set of drag cutters (16) into an operative configuration for cutting the rock formation. A mechanism (58,64) then selectively locks the roller cones (12), to prevent further rotation, thereby keeping the second set of drag cutters (16) fixed in place. By selectively permitting rotation and preventing rotation of the roller cones (12), a plurality of sets of drag cutters (14,16) can be brought into an operative configuration for cutting the rock formation. Therefore, such a drag bit (10) may be employed to bring drag cutters (14,16) selectively into play to cut different types of rock formation, or to present renewed cutters (16) after an initial set of cutters (14) have been worn by a predetermined degree. Furthermore, rotation of the roller connes (12) may be slowed from that normally expected by application of a drag to each roller cone (12). The drag cutters (14,16) on each roller cone (12) will thereby be sequentially brought into an operative cutting configuration with respect to the rock formation and where will be evenly distributed among all the drag cutters (14,16) diposed on each roller cone (12).
摘要翻译： 可以通过将辊锥作为用于多个可区分类型的阻力切割器的载体来将滚子锥头用作旋转阻力钻头。 滚子锥体各自联接到选择性地允许滚子锥体旋转的机构。 滚筒锥体以其他方式固定，并且当钻头旋转时，阻力切割器与岩石接合。 然而，在选择性地允许滚筒锥体旋转的地方，拖曳钻头的旋转使滚筒锥体旋转，从而使第二组拖曳切割机成为用于切割岩层的构型。 机构然后选择性地锁定辊锥以防止进一步旋转，保持第二组拖刀被固定就位。 通过选择性地允许和防止滚子锥体的旋转，可以将多组拖曳切割器设置成用于切割岩石的构造。 可以采用这样的拖拽位置来选择性地拖动切割器来切割不同类型的岩层，或者在初始设置的切割器已经被磨损预定的程度之后呈现更新的切割器。 此外，通过对每个滚子锥体施加阻力，滚子锥的旋转可以减慢。 每个滚子锥体上的拖刀将相对于岩石顺序地进入切割构造，并且磨损将均匀地分布在拖刀中。
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公开(公告)号：EP0289668A1
公开(公告)日：1988-11-09
申请号：EP87303233.8
申请日：1987-04-14
申请人： Higdon, Bob
发明人： Higdon, Bob
CPC分类号： E21B10/246 , E21B10/18 , E21B10/20 , E21B10/22
摘要： A drill bit is shown which is connectable to the lower end of a rotary drill string for use in drilling oil and gas wells as drilling mud is circulated downward through the string, out the bit, and upwardly within the annulus between the string and well bore so as to remove cuttings therefrom. The bit has cones (31) which are mounted for rotation about thrust bearings which extend inwardly from the lower ends of legs which depend from a shank at the upper end of the bit body which is attached to the drill string. The cones are secured on the bearing journals by a system of sealed liquid passages (50-51) and reservoirs which provide a liquid lock requiring no retaining bearings or washers.
摘要翻译： 示出了钻头，其可连接到旋转钻柱的下端，用于钻油井和气井，因为钻井泥浆通过钻柱向下循环穿过钻柱，并且在钻柱和井眼之间的环形区域内向上循环 从而从中去除切屑。 该钻头具有锥体（31），该锥体（31）被安装成围绕推力轴承旋转，该推力轴承从支脚的下端向内延伸，所述下端部分依赖于连接到钻柱的钻头主体的上端的柄部。 锥体通过密封液体通道（50-51）和储存器固定在轴承轴颈上，该系统提供不需要保持轴承或垫圈的液体锁定。
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公开(公告)号：EP0219959A3
公开(公告)日：1988-10-19
申请号：EP86306897
申请日：1986-09-05
发明人： Hall, David Richard
CPC分类号： E21B10/5673 , B22F7/06 , B22F2998/00 , C22C26/00 , E21B10/52 , B22F2207/01
摘要： A rock bit has three cones with tunsgten carbide inserts in the cutting structure of each cone. The gage row inserts have a layer of polycrystalline diamond on the converging portion protruding from the surface of the cone. One or more transition layers are provided between the tungsten carbide insert body and the polycrystalline diamond layer. Such a transition layer comprises diamond and precemented tungsten carbide.
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56.发明公开Consolidation of a part from separate metallic components 失效Herstellung eines Formus，aus getrennten，metallischen Komponenten。
公开(公告)号：EP0177209A2
公开(公告)日：1986-04-09
申请号：EP85306518.3
申请日：1985-09-13
申请人： CDP, Ltd.
发明人： Ecer, Gunes M.
CPC分类号： E21B17/1078 , B22F3/15 , B22F3/22 , B22F7/06 , B22F2005/001 , E21B10/22 , E21B10/46 , E21B10/50 , E21B10/52
摘要： A method of consolidating metallic body means comprises
a) applying to the body means a mixture of:
i) metallic powder
ii) fugitive organic binder
iii) volatile solvent
b) drying the mixture, and
c) burning out the binder and solvent at elevated temperature,
d) and applying pressure to the powdered metal to consolidate same on said body means.摘要翻译： 一种固结金属体装置的方法包括（a）向身体提供以下混合物：（i）金属粉末（ii）挥发性有机粘合剂（iii）挥发性溶剂（b）干燥混合物，和（c） 粘合剂和溶剂，（d）并向粉末金属施加压力以在所述主体装置上固结。
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57.发明公开A body structure and nozzle for enhancing the flow of drilling fluid in a rotary drill bit 失效用于提高旋转钻头钻井液流量的身体结构和喷嘴
公开(公告)号：EP0040846A3
公开(公告)日：1982-07-07
申请号：EP81104017
申请日：1981-05-25
CPC分类号： E21B10/52 , E21B10/083 , E21B10/16 , E21B10/18 , E21B10/26
摘要： A rotary drill bit for drilling a bore hole in the surface of the earth is provided in which the drill bit comprises a body having a duct therethrough for carrying drilling fluid. A conical cutting head having an axis at an acute angle with respect to the axis of the drill bit .is mounted in the cutting head. An elongated nozzle is positioned at the end of the duct for injecting the drilling fluid into the bore hole. The nozzle has an opening which opens into the bore hole wherein the longitudinal center line of the opening follows the locus of the mid-point between the side wall of the bore hole and the outermost circumference of the cutting head. Drilling fluid injected through the nozzle removes detritus from between the teeth and the cutting head at the bottom of the bore hole. The body of the drill bit has a first portion having a truncated conical surface with the axis of the truncated cone coinciding with the axis of the cutting head. The surface of the truncated cone is tangent to the side surface of the bore hole at a line on the opposite side of the body from the nozzle. This forms a passage between the surface of the truncated cone and the side surface of the bore hole for the upward flow of drilling fluid and detritus.
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公开(公告)号：EP0038125A2
公开(公告)日：1981-10-21
申请号：EP81301218.4
申请日：1981-03-23
摘要： This invention discloses a rolling cone drilling bit (10) having a plurality of cutters (16) which have inserted therein hard metal cutting elements (22) preferably formed of tungsten carbide alloy; and in which bit the rolling cone cutters (16) are located in such a manner that their rotational axes (32) are greatly offset from the rotational axis (34) of the drill bit.
摘要翻译： 本发明公开了一种具有多个切割器[16]的滚动锥钻头[10]，其中插入了优选由碳化钨合金形成的硬金属切割元件[22] 并且其中滚动锥形切割器[16]的位置使得它们的旋转轴线[32]大大偏离钻头的旋转轴线[34]。
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公开(公告)号：EP0036772A2
公开(公告)日：1981-09-30
申请号：EP81301217.6
申请日：1981-03-23
发明人： Taylor, Philip Alan , Carter, Mark Warren , Childers, John Stevenson , Pastusek, Paul Ernest , Schumacher, Percy William
摘要： This invention discloses a rolling cone drilling bit (10) having a plurality of cutters (16) which have inserted therein hard metal cutting elements (22) preferably formed of tungsten carbide alloy; and in which bit the rolling cone cutters (16) are located in such a manner that their rotational axes (32) are greatly offset from the rotational axis (34) of the drill bit. In addition, a fluid jetting system is provided in the invention that directs a pressurized fluid spray (46) across the main cutting inserts and against the formation face so that when the drill bit (10) is used in its most advantageous areas, such as the soft, medium-soft and plastic formations, the jetting system prevents "balling up» of the cutters (16) and greatly increases the drilling efficiency of the bit.
摘要翻译： 本发明公开了一种具有多个刀具（16）的滚锥钻头（10），所述刀具中插入有优选由碳化钨合金形成的硬质金属切削元件（22） 并且在哪个钻头中这些旋转锥形刀具（16）以其旋转轴线（32）大大偏离钻头的旋转轴线（34）的方式定位。 此外，本发明提供了一种流体喷射系统，该流体喷射系统引导加压流体喷雾（46）越过主切削刀片并抵靠着形成面，使得当钻头（10）用于其最有利的区域时，例如 软，中等软度和塑性结构，喷射系统防止了切割器（16）的“成球”并大大提高钻头的钻孔效率。
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60.发明公开Method for producing an improved layer, particular for a drill bit 失效Verfahren zum Herstellen einer verb desserten Schicht，insbesondere auf einem Bohrkopf。
公开(公告)号：EP0030055A1
公开(公告)日：1981-06-10
申请号：EP80201107.2
申请日：1980-11-24
摘要： Process for producing an article, e.g. a drill bit, wherein a first layer (4) of powder material is applied to a core member (3) by cold isostatic compacting and subsequent sintering, and a second, exterior layer (5) is then applied by thermal spraying followed by hot isostatic compacting. The powder material of the first layer (4) may be a nickel-containing alloy steel powder.
摘要翻译： 用于生产物品的方法，例如 钻头，其中通过冷等静压和随后的烧结将粉末材料的第一层（4）施加到芯构件（3），然后通过热喷涂施加第二外层（5），随后进行热等静压 压实。 第一层（4）的粉末材料可以是含镍合金钢粉末。
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