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1.发明公开EXTERNAL, DIVORCED PDC BEARING ASSEMBLIES FOR HYBRID DRILL BITS 审中-公开EXTERNE GETEILTE PDC-LAGERANORDNUNGENFÜRHYBRID-BOHRSPITZEN
公开(公告)号：EP2478177A2
公开(公告)日：2012-07-25
申请号：EP10757902.1
申请日：2010-09-16
发明人： KULKARNI, Ajay V.
摘要： A hybrid-type earth boring drill bit is described having fixed cutting blades and rolling cones with cutting elements, wherein the rolling cones are associated with a spindle assembly that may be optionally divorced from the head pin assembly, and which includes bearing members that further include a plurality of polycrystalline diamond elements.
摘要翻译： 描述了具有固定切割刀片和具有切割元件的滚动锥体的混合式钻孔钻头，其中滚动锥体与可以可选地脱离头部销组件的主轴组件相关联，并且其包括进一步包括 多个多晶金刚石元件。
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公开(公告)号：EP1409836B1
公开(公告)日：2007-03-21
申请号：EP02709475.4
申请日：2002-02-12
摘要： A bit is provided having at least one leg extending downwardly and inwardly from the bit body. A cutter cone is rotatably mounted on a shaft extending inwardly from the lower portion of each leg. The annular space defined by the base of the shaft and the inner surface at the base of the cone forms a seal gland. An elastomeric o-ring sealingly engages an inner surface of the cone and a first rigid ring which rotates with the o-ring and cone. The o-ring energizes the first rigid ring for sealingly engaging a second rigid ring mounted to the leg ot the bit near the base of the shaft. The second rigid ring is secured to and seals against a surface at the base of the shaft and is held stationary relative to the surface. A lubricant passage for lubricating the seal is pressurized by the drilling fluid pressure in the center of the bit body.
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公开(公告)号：EP1561002A1
公开(公告)日：2005-08-10
申请号：EP03810341.2
申请日：2003-11-07
IPC分类号： E21B10/30
摘要： The invention relates to a roller assembly (20) for a rotary roller reamer (10). The roller assembly (20) includes a roller pin (22) and a crushing roller (24). The crushing roller (24) is arranged to be mounted on the roller pin (22) and to rotate thereabout. The roller assembly (20) is connected together so as to form a single cartridge which can be inserted into a pocket (18) of the rotary roller reamer (10) and secured thereto using a single fastener device.
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公开(公告)号：EP1409836A2
公开(公告)日：2004-04-21
申请号：EP02709475.4
申请日：2002-02-12
摘要： A cutter cone (33) is rotatably mounted on a shaft (30) extending inwardly from the lower portion of each leg. The annular space defined by the base of the shaft and the inner surface at the base of the cone forms a seal gland (37). An elastomeric o-ring (51) sealingly engages an inner surface of the cone and a first rigid ring (49) which rotates with the o-ring and cone. The o-ring (51) energizes the first rigid ring (49) for sealingly engaging a second rigid ring (50) mounted to the leg ot the bit near the base of the shaft. The second rigid ring (50) is secured to and seals against a surface (39) at the base of the shaft and is held stationary relative to the surface (39). A lubricant passage (85) for lubricating the seal is pressurized by the drilling fluid pressure in the center (15) of the bit body.
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公开(公告)号：EP1002182A1
公开(公告)日：2000-05-24
申请号：EP98938230.4
申请日：1998-07-31
发明人： SAXMAN, William, C.
IPC分类号： E21B10/24
CPC分类号： E21B10/24
摘要： A pressure compensating assembly for use in roller cone drilling bits of the sealed bearing type. The compensating assembly includes a hollow body (38) arranged to fit into a cavity in the bit connected with the lubrication system of the bit and the hollow body includes a normally open lubricant passageway extending therethrough. A seal (42) encircles the body on one side of the lubricant passageway (26) and is arranged to sealingly engage the bit and an elastomeric, cup-shaped diaphragm (32) is located on the body and has a lip (50) arranged to sealingly engage the bit on the other side of the lubricant passageway. The diaphragm having a protuberance (66) on the side of the diaphragm facing the passageway and sized to enter and close the passageway. The body, seal, and diaphragm being assembled into a unitary cartridge for introduction into the bit as a unit.
摘要翻译： 用于密封轴承类型的牙轮钻头的压力补偿组件。 补偿组件包括中空体（38），该中空体布置成配合到钻头中的与钻头的润滑系统连接的空腔中，并且中空体包括延伸穿过其中的常开润滑剂通道。 密封件（42）在润滑剂通道（26）的一侧环绕主体并且被布置成密封地接合钻头，并且弹性体的杯形隔膜（32）位于主体上并且具有布置的唇部（50） 以密封地接合润滑剂通道的另一侧上的钻头。 隔膜在隔膜的面向通道的一侧上具有突起（66）并且尺寸设计成进入和关闭通道。 阀体，密封件和隔膜被组装成一个整体式滤芯，作为一个单元引入钻头。
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公开(公告)号：EP0808409A1
公开(公告)日：1997-11-26
申请号：EP96903314.0
申请日：1996-02-13
申请人： SANDVIK AKTIEBOLAG
发明人： BROLUND, Stig-Ake
CPC分类号： E21B10/10 , E21B10/24 , F16N37/003
摘要： The present invention relates to a cutter (10) for a boring head, preferably a boring head for shaft drilling, wherein the cutter (10) is rotatably mounted, via a shaft (12) of the cutter (10), in a saddle secured to the boring head. Bearings (18, 20) are provided between the shaft (12) and an outer roller body (16) of the cutter (10) to make it possible for the roller body (16) to rotate relative to the shaft (12). Seals (33) are disposed between the shaft (12) and the roller body (16) and channels/bores (38, 48, 50, 66) are provided to introduce lubrication internally into the cutter (10). The shaft (12) has a center axis (14). The invention is characterized in that a device (70) for positioning of spacer means (42, 44), a lubrication channel (66) and a diaphragm (60) are provided in the shaft (12), substantially concentrically with the center axis (14), said device, channel and reservoir being provided to accommodate lubrication. The invention further relates to a method for filling a lubrication system.
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公开(公告)号：EP0298114A4
公开(公告)日：1989-12-12
申请号：EP88901351
申请日：1988-01-15
申请人： WOOD ROY W
发明人： WOOD ROY W
摘要： A drill bit (10) for drilling into earth formations comprising a plurality of sections (12, 14, 16) having connection means (58, 60) to connect said sections (12, 14, 16) to form a unitary drill bit (10); means (44, 106, 110) in said plurality of sections for storing and delivering lubricants to the cutting cones (102); and wear bar segments (18, 20, 22) on said plurality of sections (12, 14, 16) to form continuous wear bars about the periphery of said unitary drill bit (10) thus reducing the wear on said unitary drill bit.
摘要翻译： 一种用于钻进地层的钻头（10），该钻头包括具有连接装置（58,60）的多个部分（12,14,16），以连接所述部分（12,14,16）以形成整体钻头（10 ）; 在所述多个部分中的装置（44,106,110），用于存储和输送润滑剂到切削锥体（102）; 并且在所述多个部分（12,14,16）上磨损棒段（18,20,22）以在所述一体钻头（10）的周边周围形成连续的磨损棒，从而减少所述一体钻头的磨损。
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公开(公告)号：EP0298114A1
公开(公告)日：1989-01-11
申请号：EP88901351.0
申请日：1988-01-15
申请人： WOOD, Roy W.
发明人： WOOD, Roy W.
IPC分类号： E21B10
摘要： Le fleuret de forage (10) pour forer dans des formations terrestres comprend une pluralité de sections (12, 14, 16) ayant des moyens de connexion (58, 60) qui relient ledites sections (12, 14, 16) pour former un fleuret unitaire (10). Il comprend également des moyens (44, 106, 110) dans cette pluralité de sections pour stocker et approvisionner en lubrifiant les zones de coupe (102). Des segments de barre d'usure (18, 20, 22) sont prévus sur ladite pluralité de sections (12, 14, 16) pour former des barres continues d'usure autour de la périphérie du fleuret unitaire (10) de manière à réduire l'usure du fleuret.
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公开(公告)号：EP0267140A2
公开(公告)日：1988-05-11
申请号：EP87630222.5
申请日：1987-11-03
申请人： HUGHES TOOL COMPANY
摘要： In an earth boring bit of the type having a rotatable cone (15) secured to a bearing shaft (26), an improved pressure compensating and relief system (27). A flexible diaphragm (57) has an enlarge peripheral portion (63) in an o-ring configuration sealingly secured in a compensator cavity to form a mud region and a lubricant region. A central portion (59) of the diaphragm has a perforated and ridged protrusion extending into the mud region to form a self energizing area, exposed to the mud region, that seals the perforation when the pressure of the lubricant is less than or substantially equal that of the mud. A wall (43) at the end of the compensator cavity surrounds the mud passage and engages an area around the protrusion when the diaphragm is fully extended by lubricant pressure build-up that exceeds the hydrostatic pressure. Thus, the resulting pressure differential opens the perforation (61), releases lubricant and relieves the build-up of lubricant pressure. However, the configuration of the protrusion is such as to prevent the entrance of mud into the lubricant reservoir since the exterior area of the protrusion exceeds that of the interior area. The differential pressure to open the perforation is selected to be not less than about fifty psi and the preferred form of the protrusion is substantially cylindrical, its perforation and lubricant entrance being beveled. An absence of metal bonded to the diaphragm helps avoid failures due to stress induce separations and debonding due to chemical attack. Clearances (D₁, D₂) are used between the diaphragm and the end of the cavity and the end of the protector cup to provide self centering with the lubricant and drilling mud passages.
摘要翻译： 在具有固定到轴承轴（26）的可旋转锥体（15）的类型的钻孔中，改进的压力补偿和释放系统（27）。 柔性隔膜（57）具有密封地固定在补偿腔内的O形环配置的扩大周边部分（63），以形成泥浆区域和润滑剂区域。 隔膜的中心部分（59）具有延伸到泥浆区域中的穿孔和隆起的突起，以形成暴露于泥浆区域的自我激励区域，当润滑剂的压力小于或基本上等于 的泥土。 在补偿器腔的端部处的壁（43）围绕泥浆通道并且当通过超过静水压力的润滑剂压力积聚完全延伸隔膜时与突起周围的区域接合。 因此，所产生的压力差打开穿孔（61），释放润滑剂并减轻润滑剂压力的累积。 然而，由于突起的外部区域超过内部区域的外部区域，因此突起的构造是防止泥浆进入润滑剂储存器中的。 打开穿孔的压差选择为不小于约50psi，并且突出物的优选形式基本上为圆柱形，其穿孔和润滑剂入口被倒角。 没有粘合到隔膜上的金属有助于避免由于应力引起的由于化学侵蚀引起的分离和脱粘的故障。 间隙（D1，D2）用于隔膜与腔的端部和保护杯的端部之间，以提供自动定心与润滑剂和钻井泥浆通道。
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公开(公告)号：EP0040847B1
公开(公告)日：1985-01-16
申请号：EP81104018.7
申请日：1981-05-25
CPC分类号： F16C33/6622 , E21B10/24 , F16C2352/00 , F16N17/00
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