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公开(公告)号：US5472058A
公开(公告)日：1995-12-05
申请号：US230348
申请日：1994-04-20
CPC分类号： E21B10/25 , F16J15/344
摘要： A mechanical seal for use in a rotary rock bit comprises a leg seal ring positioned within a recessed portion of a leg forming a seal cavity. The leg seal comprises one surface partially engaged by a resilient material and an opposite surface comprising a first sealing surface. The mechanical seal also comprises cone seal ring positioned within a portion of a cone forming the seal cavity. The cone seal comprises one surface positioned within and attached to a recessed portion of the cone and another surface comprising a second sealing surface engaging the first sealing surface. The portion of the leg seal ring engaged by the resilient material engages a back face of the leg which includes a ramp, serving to urge the first sealing surface against the adjacent second sealing surface and create a sealing engagement. The first and second sealing surfaces are made from different hard materials each having a similar hardness of greater than 1000, and each material selected has a Knoop hardness difference of about 400 or less. The first and second sealing surfaces may be formed from materials the same as or different than materials forming the leg seal ring and cone seal ring, respectively.
摘要翻译： 用于旋转岩石钻头的机械密封件包括定位在形成密封腔的腿的凹陷部分内的腿部密封环。 腿部密封件包括由弹性材料部分地接合的一个表面和包括第一密封表面的相对表面。 机械密封还包括定位在形成密封腔的锥体的一部分内的锥形密封环。 所述锥形密封件包括位于所述锥体的凹入部分内并附着于所述锥体的凹部的一个表面，以及包括与所述第一密封表面接合的第二密封表面的另一 由弹性材料接合的腿部密封环的部分接合腿部的后表面，其包括斜面，用于将第一密封表面推靠相邻的第二密封表面并产生密封接合。 第一和第二密封表面由各自具有大于1000的相似硬度的不同硬质材料制成，并且所选择的每种材料的诺普硬度差为约400以下。 第一和第二密封表面可以由与分别形成腿密封环和锥形密封环的材料相同或不同的材料形成。
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公开(公告)号：US5715899A
公开(公告)日：1998-02-10
申请号：US597476
申请日：1996-02-02
CPC分类号： E21B10/50 , B22F1/0014 , B23K35/327 , C22C29/08 , C23C30/005 , B22F2005/001 , B22F2998/00 , B22F2999/00
摘要： An improved hard facing for teeth and other surfaces of milled tooth rock bits comprises steel in the range of from 18 to 32 percent by weight, and filler in the range of from 68 to 82 percent by weight. The filler is cemented tungsten carbide and cast tungsten carbide free, and includes greater than 95 percent by weight single crystal monotungsten carbide particles. The single crystal monotungsten carbide particles have a particle size in the range of from 200 to 500 mesh and, preferably in the range of from 200 to 325.
摘要翻译： 磨齿牙钻头的齿和其他表面的改进的硬面包括在18至32重量％范围内的钢和68至82重量％的填料。 填料是固体碳化钨和铸造碳化钨，并且包括大于95重量％的单晶单晶碳化钨颗粒。 单晶单晶碳化物颗粒的粒径在200至500目的范围内，优选在200至325的范围内。
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公开(公告)号：US5305840A
公开(公告)日：1994-04-26
申请号：US944430
申请日：1992-09-14
摘要： A rock bit employs cemented tungsten carbide inserts for engaging a rock formation for drilling oil wells or the like. The cemented tungsten carbide inserts have as a binder phase a cobalt base alloy including from 10 to 35% by weight nickel, from 3 to 10% by weight chromium, from 1 to 6% by weight of molybdenum, and a balance primarily of cobalt. A particularly preferred composition has 6% by weight chromium, 17% by weight nickel, 4% by weight molybdenum and a balance of cobalt. Wear resistance is enhanced without loss of toughness in the inserts.
摘要翻译： 岩石钻头采用水泥碳化钨刀片，用于接合用于钻井油井等的岩层。 粘结碳化钨刀片具有作为粘结相的钴基合金，其包含10至35重量％的镍，3至10重量％的铬，1至6重量％的钼，余量主要为钴。 特别优选的组合物具有6重量％的铬，17重量％的镍，4重量％的钼和余量的钴。 增加耐磨性，而不会损失刀片的韧性。
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公开(公告)号：US20110168454A1
公开(公告)日：2011-07-14
申请号：US12566428
申请日：2009-09-24
IPC分类号： E21B10/36
CPC分类号： C22C29/02 , B22F2005/001 , B22F2998/10 , B22F2999/00 , C22C29/005 , C23C16/34 , C23C16/40 , C23C16/4417 , C23C16/45525 , C23C30/005 , E21B10/56 , B22F1/0018 , B22F1/02 , B22F1/0044
摘要： A down hole drill bit that includes a plurality of cutting elements mounted on a cutting structure, wherein at least one of the plurality of cutting elements comprises a wear resistant material, the wear resistant material comprising coarse grains disposed in a binder matrix phase, wherein the binder matrix phase comprises nanoparticles dispersed therein is disclosed.
摘要翻译： 一种井下钻头，其包括安装在切割结构上的多个切割元件，其中所述多个切割元件中的至少一个包括耐磨材料，所述耐磨材料包括设置在粘合剂基质相中的粗晶粒，其中， 公开了粘合剂基质相包含分散在其中的纳米颗粒。
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5.发明授权公开(公告)号：US07017677B2
公开(公告)日：2006-03-28
申请号：US10437750
申请日：2003-05-14
CPC分类号： E21B10/567 , C22C29/08 , C23C30/005
摘要： Cutting elements having coarse grain substrates and ultra hard material layers are provided. The substrates are formed from coarse grain size particles of tungsten carbide. A method of forming such cutting elements and a drag bit incorporating such cutting elements are also provided.
摘要翻译： 提供具有粗颗粒基材和超硬材料层的切割元件。 基板由碳化钨的粗粒度颗粒形成。 还提供了形成这种切割元件的方法和包括这种切割元件的拖曳钻头。
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公开(公告)号：US5370195A
公开(公告)日：1994-12-06
申请号：US123715
申请日：1993-09-20
IPC分类号： E21B10/52 , E21B10/46 , E21B10/56 , E21B10/567
CPC分类号： E21B10/5673
摘要： A drill bit has means at one end for connecting the bit to a drill string and a plurality of inserts at the other end for crushing the rock to be drilled. The inserts have a cemented tungsten carbide body partially embedded in the drill bit and at least two layers at the protruding drilling portion of the insert. The outermost layer contains polycrystalline diamond and particles of carbide or carbonitride of elements selected from the group consisting of W, Ti, Ta, Cr, Mo, Cb, V, Hf and Zr. The remaining layers adjacent the polycrystalline diamond layer are transition layers each comprising a composite containing diamond crystals, particles of tungsten carbide, and particles of titanium carbonitride. The average size of the diamond particles in the polycrystalline diamond layer is greater than the average size of the carbide or carbonitride particles; and the average size of the diamond particles in the transition layers is greater than the average sizes of the carbide and carbonitride particles. In particular, the transition layers contain particles of carbide and/or carbonitride with average grain sizes of less than one micrometer. The outermost layer of polycrystalline diamond extends along at least a portion of the length of the grip portion of the carbide body embedded in the drill bit.
摘要翻译： 钻头在一端具有用于将钻头连接到钻柱和在另一端的多个插入件的装置，用于破碎要钻探的岩石。 插入件具有部分地嵌入钻头中的粘结碳化钨体和在插入件的突出钻孔部分处的至少两层。 最外层包含选自W，Ti，Ta，Cr，Mo，Cb，V，Hf和Zr的元素的多晶金刚石和碳化物或碳氮化物的颗粒。 与多晶金刚石层相邻的剩余层是各自包含含有金刚石晶体，碳化钨颗粒和碳氮化钛颗粒的复合物的过渡层。 多晶金刚石层中的金刚石颗粒的平均尺寸大于碳化物或碳氮化物颗粒的平均尺寸; 并且过渡层中的金刚石颗粒的平均尺寸大于碳化物和碳氮化物颗粒的平均尺寸。 特别地，过渡层含有平均晶粒尺寸小于1微米的碳化物和/或碳氮化物颗粒。 多晶金刚石的最外层沿嵌入在钻头中的碳化物体的把持部分的长度的至少一部分延伸。
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公开(公告)号：US08561731B2
公开(公告)日：2013-10-22
申请号：US12566428
申请日：2009-09-24
IPC分类号： E21B10/36
CPC分类号： C22C29/02 , B22F2005/001 , B22F2998/10 , B22F2999/00 , C22C29/005 , C23C16/34 , C23C16/40 , C23C16/4417 , C23C16/45525 , C23C30/005 , E21B10/56 , B22F1/0018 , B22F1/02 , B22F1/0044
摘要： A down hole drill bit is disclosed that includes a plurality of cutting elements mounted on a cutting structure. At least one of the plurality of cutting elements comprises a wear resistant material, the wear resistant material comprising coarse grains disposed in a binder matrix phase, wherein the binder matrix phase comprises nanoparticles uniformly dispersed therein.
摘要翻译： 公开了一种井下钻头，其包括安装在切割结构上的多个切割元件。 所述多个切割元件中的至少一个包括耐磨材料，所述耐磨材料包含设置在粘合剂基质相中的粗晶粒，其中所述粘合剂基质相包含均匀分散在其中的纳米颗粒。
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公开(公告)号：US07549912B2
公开(公告)日：2009-06-23
申请号：US11197119
申请日：2005-08-04
IPC分类号： B24B31/108 , B21K5/06 , E21B10/46
CPC分类号： B24B31/104
摘要： A method for manufacturing drill bit inserts in which the inserts are finished in a centrifugal disc finishing machine. The centrifugal disc finishing machine comprises a configured surface rotating relative to a stationary receptacle, and the inserts may be finished with a mass of materials comprising at least one of a group of media, parts, detergent, and solution. Also, a method of increasing drill bit insert performance comprising accelerating a plurality of inserts in a high-energy finishing machine, wherein the acceleration results in a generally toroidal interaction between the inserts and at least one of the group comprising media, parts, detergent, and solution.
摘要翻译： 一种用于制造钻头刀片的方法，其中刀片在离心盘精加工机中完成。 离心盘整理机包括相对于固定容器旋转的配置表面，并且插入件可以用包含一组介质，部件，洗涤剂和溶液中的至少一种的材料制成。 而且，增加钻头刀片性能的方法包括加速高能精加工机中的多个刀片，其中加速度导致插入件和包括介质，部件，洗涤剂的组中的至少一个组件之间的大致环形相互作用， 和解决方案。
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公开(公告)号：US20060005662A1
公开(公告)日：2006-01-12
申请号：US11175120
申请日：2005-07-05
申请人： Greg Lockwood , Anthony Griffo , Dah-Ben Liang , Alysia White
发明人： Greg Lockwood , Anthony Griffo , Dah-Ben Liang , Alysia White
IPC分类号： C22C29/08
CPC分类号： C23C30/005 , B23K35/0266 , B23K35/327 , E21B10/50
摘要： A hardfacing composition for a drill bit, including a carbide phase comprising from about 50% to about 75% by weight of the hardfacing composition of a combination of 16 to 40 mesh cemented tungsten carbide and 80 to 200 mesh super dense tungsten carbide cobalt particles, wherein about 5% to about 50% by weight of the carbide phase comprises the super dense tungsten carbide cobalt particles, and a binder alloy including about 25% to about 50% by weight of the hardfacing composition.
摘要翻译： 用于钻头的表面硬化组合物，包括碳化物相，其包含约40重量％至约75重量％的硬质合金组合物，其为16至40目的硬质合金碳化钨和80至200目的超致密碳化钨钴颗粒的组合， 其中约5重量％至约50重量％的碳化物相包含超致密碳化钨钴颗粒和包含占该组合物的约25重量％至约50重量％的粘合剂合金。
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10.发明授权
公开(公告)号：US4549615A
公开(公告)日：1985-10-29
申请号：US397423
申请日：1982-07-12
申请人： Dah-Ben Liang , Robert S. Gulibon
发明人： Dah-Ben Liang , Robert S. Gulibon
摘要： Disclosed is a single-pass notching and drilling tool. The tool comprises an adaptor having a first threaded end for coupling with a power source, an opposed second threaded end, an enlarged diameter portion adjacent to the first threaded end and having a first abutment face and a mediate portion adjacent to the first axial abutment face and adjacent to the second threaded end. There is also a drill portion joined to the second threaded end of the adaptor and having a second axial abutment face. The tool further comprises a notching tool comprising a body having a central bore rotatably engaging the mediate portion of the adaptor. The notching tool is freely rotatable about the mediate portion independent of the rotation of the adaptor. The axial movement of the notching tool is bounded by the first and second axial abutment faces. Disclosed also is a method of drilling a blast hole with the single-pass notching and drilling tool.
摘要翻译： 公开了一种单程切口和钻孔工具。 该工具包括适配器，该适配器具有用于与动力源联接的第一螺纹端，相对的第二螺纹端，与第一螺纹端相邻的扩大直径部分，并且具有第一邻接面和邻近第一轴向邻接面的中间部分 并且与第二螺纹端相邻。 还有一个连接到适配器的第二螺纹端并具有第二轴向邻接面的钻头部分。 该工具还包括切口工具，其包括具有可旋转地接合适配器的中间部分的中心孔的主体。 开槽工具可以独立于适配器的旋转而围绕中间部分自由旋转。 开槽工具的轴向移动由第一和第二轴向邻接面限定。 还公开了使用单程切口和钻孔工具钻孔的方法。
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