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1. 发明授权

US6123337A Composite earth boring bit seal 失效
标题翻译：复合地镗头密封
公开(公告)号：US6123337A
公开(公告)日：2000-09-26
申请号：US980917
申请日：1997-12-01
申请人： Zhigang Fang , Sujian Huang , Chris E. Cawthorne , Brian A. James , G. Steve Kyker , Robert Denton , Roger Didericksen
发明人： Zhigang Fang , Sujian Huang , Chris E. Cawthorne , Brian A. James , G. Steve Kyker , Robert Denton , Roger Didericksen
IPC分类号： E21B10/22 , E21B10/25 , F16J15/16 , E21B33/10
CPC分类号： E21B10/25 , Y10S277/91 , Y10S277/936 , Y10S277/944
摘要： A high performance rock bit journal seal is formed from a composite material comprising an elastomeric material and a nonelastomeric polymeric material. The polymeric material is preferably in the form of fibers compiled or woven into a sheet. The elastomeric material may include one or more lubricant additives. The composite seal material comprises a number of repeating sheets of polymeric fabric that are bonded together with the elastomeric material. The seal can either be formed entirely of the composite seal material or partially of the composite material, in which case it is preferred that the seal wear or dynamic surface be formed from the composite material and the remaining portion of the seal be formed from an elastomeric material. The seal can be used as a primary journal seal, or as a secondary journal seal in a dual seal bit. Seals formed from the composite seal material display enhanced wear resistance, reduced coefficient of friction, and improved high-temperature stability and endurance when compared to noncomposite seal materials, thereby both extending the useful life of seals formed therefrom formed and of rock bits that employ such seals.
摘要翻译：高性能岩石钻头密封件由包括弹性体材料和非弹性聚合材料的复合材料形成。聚合物材料优选为编织或织成片材的纤维的形式。弹性体材料可以包括一种或多种润滑剂添加剂。复合密封材料包括与弹性体材料结合在一起的多个聚合物织物的重复片材。密封件可以完全由复合密封材料或复合材料部分地形成，在这种情况下，优选的是，密封件磨损或动态表面由复合材料形成，并且密封件的剩余部分由弹性体形成材料。密封件可用作主轴颈密封件，也可用作双密封钻头中的次级密封件。与复合密封材料相比，由复合密封材料形成的密封件显示出增强的耐磨性，降低的摩擦系数和改善的高温稳定性和耐久性，从而延长了由其形成的密封件的使用寿命和使用这种密封材料的岩石钻头海豹

2. 发明授权

US5842700A Composite rock bit seal 失效
标题翻译：复合岩石钻头密封
公开(公告)号：US5842700A
公开(公告)日：1998-12-01
申请号：US727001
申请日：1996-10-08
申请人： Zhigang Fang , Sujian Huang , Chris E. Cawthorne , Brian A. James , G. Steven Kyker , Robert Denton
发明人： Zhigang Fang , Sujian Huang , Chris E. Cawthorne , Brian A. James , G. Steven Kyker , Robert Denton
IPC分类号： E21B10/22 , E21B10/25 , F16J15/34
CPC分类号： E21B10/25 , Y10S277/91 , Y10S277/936 , Y10S277/944
摘要： A high performance rock bit journal seal is formed from a composite material comprising an elastomeric material and a nonelastomeric polymeric material. The polymeric material is preferably in the form of fibers woven into a sheet. The elastomeric material includes at least one lubricant additive. The composite seal material comprises a number of repeating sheets of polymeric fabric that are bonded together with the elastomeric material. In one embodiment, the seal includes a body formed entirely from the composite material, in which case both the static and dynamic seal surfaces are the same. In another embodiment, the seal includes a first body portion formed from the composite material, and a remaining body portion formed from a noncomposite elastomeric seal material. Seals formed from the composite seal material display enhanced wear resistance, reduced coefficient of friction, and improved high-temperature stability and endurance when compared to noncomposite seal materials, thereby both extending the useful life of seals formed therefrom formed and of rock bits that employ such seals.
摘要翻译：高性能岩石钻头密封件由包括弹性体材料和非弹性聚合材料的复合材料形成。聚合物材料优选为编织成片材的纤维的形式。弹性体材料包括至少一种润滑剂添加剂。复合密封材料包括与弹性体材料结合在一起的多个聚合物织物的重复片材。在一个实施例中，密封件包括完全由复合材料形成的主体，在这种情况下，静态和动态密封表面都相同。在另一个实施例中，密封件包括由复合材料形成的第一主体部分和由非复合弹性体密封材料形成的剩余主体部分。与复合密封材料相比，由复合密封材料形成的密封件显示出增强的耐磨性，降低的摩擦系数和改善的高温稳定性和耐久性，从而延长了由其形成的密封件的使用寿命和使用这种密封材料的岩石钻头海豹

3. 发明授权

US06679342B2 Dual-seal drill bit pressure communication system 有权
标题翻译：双密封钻头压力通讯系统
公开(公告)号：US06679342B2
公开(公告)日：2004-01-20
申请号：US10214020
申请日：2002-08-07
申请人： Gary Ray Portwood , Chris Edward Cawthorne , Robert Denton , Robert H. Slaughter, Jr. , Roger Didericksen , Peter Cariveau
发明人： Gary Ray Portwood , Chris Edward Cawthorne , Robert Denton , Robert H. Slaughter, Jr. , Roger Didericksen , Peter Cariveau
IPC分类号： E21B1000
CPC分类号： E21B10/25 , F16C21/00 , F16C33/7836 , F16C33/7896 , F16C2352/00 , Y10S277/928
摘要： A drill bit for use in a borehole at least partially containing drilling fluid includes a bit body having at least two bit components, including at least one leg, the leg having a journal segment, and a roller cone rotatably mounted upon the journal segment and forming at least one bearing cavity therebetween. Also included is an annular primary seal disposed between the leg and the roller cone, an annular secondary seal disposed between the leg and the roller cone and between the annular primary seal and the borehole and an annular space disposed between the annular primary seal and the annular secondary seal, the annular space at least partially containing fluid and being in substantially absolute fluid isolation from the bearing cavity and a conduit for permitting the flow of fluid from the annular space to the borehole. The annular secondary seal may be primarily elastomeric and a passage for permitting the flow of fluid may further permit the flow of fluid from the borehole to the annular space. The annular space may at least partially include a grease possessing a water washout value of under approximately 50% per ASTM D-4049 water spray test for lubrication characteristics and the grease may include a polymer tackifier of between approximately 1% and approximately 5% by weight.
摘要翻译：用于至少部分地包含钻井流体的钻孔中的钻头包括具有至少两个钻头部件的钻头体，所述钻头体包括至少一个腿部，所述腿部具有轴颈部分，以及可旋转地安装在所述轴颈部段上并形成其间具有至少一个轴承腔。还包括设置在腿和辊锥之间的环形主密封件，设置在腿和辊锥之间以及环形主密封件和钻孔之间的环形次级密封件，以及设置在环形主密封件和环形主密封件之间的环形空间第二密封件，至少部分地包含流体并且与轴承腔基本上绝对的流体隔离的环形空间和用于允许流体从环形空间流到钻孔的导管。环形二次密封件可以主要是弹性体，并且用于允许流体流动的通道可以进一步允许流体从钻孔流到环形空间。环形空间可以至少部分地包括具有低于大约50％的水冲洗值的润滑脂，其根据ASTM D-4049喷水试验进行润滑特性，并且润滑脂可以包括约1重量％和约5重量％之间的聚合物增粘剂。

4. 发明授权

US06196339B1 Dual-seal drill bit pressure communication system 有权
标题翻译：双密封钻头压力通讯系统
公开(公告)号：US06196339B1
公开(公告)日：2001-03-06
申请号：US09201614
申请日：1998-11-30
申请人： Gary Ray Portwood , Chris Edward Cawthorne , Robert H. Slaughter, Jr. , Roger Didericksen , Peter Cariveau , Robert Denton
发明人： Gary Ray Portwood , Chris Edward Cawthorne , Robert H. Slaughter, Jr. , Roger Didericksen , Peter Cariveau , Robert Denton
IPC分类号： E21B1000
CPC分类号： E21B10/25 , F16C21/00 , F16C33/7836 , F16C33/7896 , F16C2352/00 , Y10S277/928
摘要： A drill bit for use in a borehole at least partially containing drilling fluid includes a bit body having at least two bit components, including at least one leg, the leg having a journal segment, and a roller cone rotatably mounted upon the journal segment and forming at least one bearing cavity therebetween. Also included is an annular primary seal disposed between the leg and the roller cone and an annular secondary seal disposed between the leg and the roller cone and between the annular primary seal and the borehole. An annular space is defined between the annular primary seal and the annular secondary seal, the annular space at least partially containing fluid and being in substantially absolute fluid isolation from the bearing cavity. The seals are configured to allow the passage of a fluid from the annular space to the borehole. The annular secondary seal may be primarily elastomeric and a passage for fluid from the borehole to the annular space can be included. The annular space may at least partially include a grease possessing a water washout value of under approximately 50% per ASTM D-4049 water spray test for lubrication characteristics and the grease may include a polymer tackifier of between approximately 1% and approximately 5% by weight.
摘要翻译：用于至少部分地包含钻井流体的钻孔中的钻头包括具有至少两个钻头部件的钻头体，所述钻头体包括至少一个腿部，所述腿部具有轴颈部分，以及可旋转地安装在所述轴颈部段上并形成其间具有至少一个轴承腔。还包括设置在腿部和滚子锥体之间的环形主密封件以及设置在腿部和滚子锥体之间以及环形主密封件和钻孔之间的环形副密封件。环形空间限定在环形主密封件和环形二次密封件之间，环形空间至少部分地包含流体并且与轴承腔基本上绝对的流体隔离。密封件构造成允许流体从环形空间通向钻孔。环形二次密封件可以主要是弹性体，并且可以包括用于从钻孔到环形空间的流体的通道。环形空间可以至少部分地包括具有低于大约50％的水冲洗值的润滑脂，其根据ASTM D-4049喷水试验进行润滑特性，并且润滑脂可以包括约1重量％和约5重量％之间的聚合物增粘剂。

5. 发明授权

US06695079B2 Dual-seal drill bit pressure communication system 有权
标题翻译：双密封钻头压力通讯系统
公开(公告)号：US06695079B2
公开(公告)日：2004-02-24
申请号：US10100100
申请日：2002-03-18
申请人： Gary Ray Portwood , Chris Edward Cawthorne , Robert H. Slaughter, Jr. , Roger Didericksen , Peter Cariveau , Robert Denton
发明人： Gary Ray Portwood , Chris Edward Cawthorne , Robert H. Slaughter, Jr. , Roger Didericksen , Peter Cariveau , Robert Denton
IPC分类号： E21B1000
CPC分类号： E21B10/25 , F16C21/00 , F16C33/7836 , F16C33/7896 , F16C2352/00 , Y10S277/928
摘要： A drill bit for use in a borehole at least partially containing drilling fluid includes a bit body having at least two bit components, including at least one leg, the leg having a journal segment, and a roller cone rotatably mounted upon the journal segment and forming at least one bearing cavity therebetween. Also included is an annular primary seal disposed between the leg and the roller cone, an annular secondary seal disposed between the leg and the roller cone and between the annular primary seal and the borehole and an annular space disposed between the annular primary seal and the annular secondary seal, the annular space at least partially containing fluid and being in substantially absolute fluid isolation from the bearing cavity and a conduit for permitting the flow of fluid from the annular space to the borehole. The annular secondary seal may be primarily elastomeric and the means for permitting the flow of fluid may further permit the flow of fluid from the borehole to the annular space. The annular space may at least partially include a grease possessing a water washout value of under approximately 50% per ASTM D-4049 water spray test for lubrication characteristics and the grease may include a polymer tackifier of between approximately 1% and approximately 5% by weight.
摘要翻译：用于至少部分地包含钻井流体的钻孔中的钻头包括具有至少两个钻头部件的钻头体，所述钻头体包括至少一个腿部，所述腿部具有轴颈部分，以及可旋转地安装在所述轴颈部段上并形成其间具有至少一个轴承腔。还包括设置在腿和辊锥之间的环形主密封件，设置在腿和辊锥之间以及环形主密封件和钻孔之间的环形次级密封件，以及设置在环形主密封件和环形主密封件之间的环形空间第二密封件，至少部分地包含流体并且与轴承腔基本上绝对的流体隔离的环形空间和用于允许流体从环形空间流到钻孔的导管。环形二次密封件可以主要是弹性体，并且用于允许流体流动的装置还可以允许流体从钻孔流到环形空间。环形空间可以至少部分地包括具有低于大约50％的水冲洗值的润滑脂，其根据ASTM D-4049喷水试验进行润滑特性，并且润滑脂可以包括约1重量％和约5重量％之间的聚合物增粘剂。

6. 发明授权

US06431293B1 Dual-seal drill bit pressure communication system 有权
标题翻译：双密封钻头压力通讯系统
公开(公告)号：US06431293B1
公开(公告)日：2002-08-13
申请号：US09687686
申请日：2000-10-13
申请人： Gary Ray Portwood , Chris Edward Cawthorne , Robert H. Slaughter, Jr. , Roger Didericksen , Peter Cariveau , Robert Denton
发明人： Gary Ray Portwood , Chris Edward Cawthorne , Robert H. Slaughter, Jr. , Roger Didericksen , Peter Cariveau , Robert Denton
IPC分类号： E21B1000
CPC分类号： E21B10/25 , F16C21/00 , F16C33/7836 , F16C33/7896 , F16C2352/00 , Y10S277/928
摘要： A drill bit for use in a borehole at least partially containing drilling fluid includes a bit body having at least two bit components, including at least one leg, the leg having a journal segment, and a roller cone rotatably mounted upon the journal segment and forming at least one bearing cavity therebetween. Also included is an annular primary seal disposed between the leg and the roller cone and an annular secondary seal disposed between the leg and the roller cone and between the annular primary seal and the borehole. An annular space is defined between the annular primary seal and the annular secondary seal, the annular space at least partially containing fluid and being in substantially absolute fluid isolation from the bearing cavity. The seals are configured to allow the passage of a fluid from the annular space to the borehole. The annular secondary seal may be primarily elastomeric and a passage for fluid from the borehole to the annular space can be included. The annular space may at least partially include a grease possessing a water washout value of under approximately 50% per ASTM D-4049 water spray test for lubrication characteristics and the grease may include a polymer tackifier of between approximately 1% and approximately 5% by weight.
摘要翻译：用于至少部分地包含钻井流体的钻孔中的钻头包括具有至少两个钻头部件的钻头体，所述钻头体包括至少一个腿部，所述腿部具有轴颈部分，以及可旋转地安装在所述轴颈部段上并形成其间具有至少一个轴承腔。还包括设置在腿部和滚子锥体之间的环形主密封件以及设置在腿部和滚子锥体之间以及环形主密封件和钻孔之间的环形副密封件。环形空间限定在环形主密封件和环形二次密封件之间，环形空间至少部分地包含流体并且与轴承腔基本上绝对的流体隔离。密封件构造成允许流体从环形空间通向钻孔。环形二次密封件可以主要是弹性体，并且可以包括用于从钻孔到环形空间的流体的通道。环形空间可以至少部分地包括具有低于大约50％的水冲洗值的润滑脂，其根据ASTM D-4049喷水试验进行润滑特性，并且润滑脂可以包括约1重量％和约5重量％之间的聚合物增粘剂。

7. 发明授权

US06571889B2 Rotary cone bit with functionally-engineered composite inserts 有权
公开(公告)号：US06571889B2
公开(公告)日：2003-06-03
申请号：US09846944
申请日：2001-05-01
申请人： Anthony Griffo , Zhigang Fang , Robert Denton
发明人： Anthony Griffo , Zhigang Fang , Robert Denton
IPC分类号： E21B1000
CPC分类号： B22F7/06 , B22F2005/001 , B22F2999/00 , B33Y80/00 , C23C30/005 , E21B10/52 , Y10T428/2993 , B22F3/22
摘要： A rotary cone bit, having a functionally-engineered surface of this invention, comprises a bit body having at least one leg extending therefrom, and a cone that is rotatably disposed on the leg. The cone typically comprises a plurality of cutting elements that project outwardly therefrom. The cutting elements comprises a cermet material selected from the group consisting of refractory metal carbides, nitrides, borides, carbonitrides and mixtures thereof. A functionally-engineered material is disposed over a surface portion of at least one of the cutting elements to form a wear resistant surface thereon. The wear resistant surface has a hardness that is different than that of the underlying cutting element. The wear resistant surface is provided by forming a conformable material mixture by combining one or more powders selected from the group consisting of cermets, carbides, borides, nitrides, carbonitrides, refractory metals, Co, Fe, Ni, and combinations thereof, with an applying agent. The applied material mixture is pressurized under conditions of elevated temperature to consolidate and sinter the material mixture, thereby forming the wear resistant surface. The material mixture is consolidated and sintered in a manner that avoids unwanted material migration between the applied material mixture and substrate, thereby providing a fully-densified wear surface having desired properties of hardness and/or fracture toughness.

8. 发明申请

US20130048388A1 DRILL BIT WITH CUTTING ELEMENTS HAVING FUNCTIONALLY ENGINEERED WEAR SURFACE 有权
标题翻译：具有切割元件的钻头具有功能性的工程磨损表面
公开(公告)号：US20130048388A1
公开(公告)日：2013-02-28
申请号：US11768846
申请日：2007-06-26
申请人： Anthony Griffo , Zhigang Fang , Robert Denton
发明人： Anthony Griffo , Zhigang Fang , Robert Denton
IPC分类号： E21B10/46 , B24D3/06
CPC分类号： B22F7/06 , B22F2005/001 , B22F2999/00 , B33Y80/00 , C23C30/005 , E21B10/52 , Y10T428/2993 , B22F3/22
摘要： Drill bits and cutting elements having a functionally-engineered surface comprise a cermet material selected from the group consisting of refractory metal carbides, nitrides, borides, carbonitrides and mixtures thereof A functionally-engineered material is disposed over a surface portion one of the cutting elements to form a wear resistant surface thereon having a hardness that is different than that of the underlying cutting element. The wear resistant surface is provided by forming a conformable material mixture by combining one or more powders selected from the group consisting of cermets, carbides, borides, nitrides, carbonitrides, refractory metals, diamond particles, cubic boron nitride particles, Co, Fe, Ni, and combinations thereof, with an applying agent. The applied material mixture is pressurized under conditions of elevated temperature to consolidate and sinter the material mixture, thereby forming the wear resistant surface having desired properties of hardness and/or fracture toughness.
摘要翻译：具有功能设计表面的钻头和切割元件包括选自难熔金属碳化物，氮化物，硼化物，碳氮化物及其混合物的金属陶瓷材料。功能性工程材料设置在切割元件之一的表面部分上，在其上形成具有与下面的切割元件的硬度不同的硬度的耐磨表面。耐磨表面通过组合一种或多种选自金属陶瓷，碳化物，硼化物，氮化物，碳氮化物，难熔金属，金刚石颗粒，立方氮化硼颗粒，Co，Fe，Ni ，及其组合。将所施加的材料混合物在高温条件下加压，以固化和烧结材料混合物，从而形成具有所需硬度和/或断裂韧性性能的耐磨表面。

9. 发明授权

US07235211B2 Rotary cone bit with functionally-engineered composite inserts 有权
标题翻译：带有功能化设计的复合刀片的旋转圆锥钻头
公开(公告)号：US07235211B2
公开(公告)日：2007-06-26
申请号：US10454374
申请日：2003-06-03
申请人： Anthony Griffo , Zhigang Fang , Robert Denton
发明人： Anthony Griffo , Zhigang Fang , Robert Denton
IPC分类号： B22F7/04
CPC分类号： B22F7/06 , B22F2005/001 , B22F2999/00 , B33Y80/00 , C23C30/005 , E21B10/52 , Y10T428/2993 , B22F3/22
摘要： A rotary cone bit, having a functionally-engineered surface of this invention, comprises a bit body having at least one leg extending therefrom, and a cone that is rotatably disposed on the leg. The cone typically comprises a plurality of cutting elements that project outwardly therefrom. The cutting elements comprises a cermet material selected from the group consisting of refractory metal carbides, nitrides, borides, carbonitrides and mixtures thereof. A functionally-engineered material is disposed over a surface portion of at least one of the cutting elements to form a wear resistant surface thereon. The wear resistant surface has a hardness that is different than that of the underlying cutting element. The wear resistant surface is provided by forming a conformable material mixture by combining one or more powders selected from the group consisting of cermets, carbides, borides, nitrides, carbonitrides, refractory metals, Co, Fe, Ni, and combinations thereof, with an applying agent. The applied material mixture is pressurized under conditions of elevated temperature to consolidate and sinter the material mixture, thereby forming the wear resistant surface. The material mixture is consolidated and sintered in a manner that avoids unwanted material migration between the applied material mixture and substrate, thereby providing a fully-densified wear surface having desired properties of hardness and/or fracture toughness.
摘要翻译：具有本发明的功能设计表面的旋转圆锥头包括具有从其延伸的至少一个腿的钻头体和可旋转地设置在腿上的锥体。锥体通常包括从其向外突出的多个切割元件。切割元件包括选自难熔金属碳化物，氮化物，硼化物，碳氮化物及其混合物的金属陶瓷材料。功能性设计的材料设置在至少一个切割元件的表面部分上，以在其上形成耐磨表面。耐磨表面的硬度与底层切割元件的硬度不同。通过将选自金属陶瓷，碳化物，硼化物，氮化物，碳氮化物，难熔金属，Co，Fe，Ni及其组合的一种或多种粉末与应用代理商将所施加的材料混合物在高温条件下加压，以固化和烧结材料混合物，从而形成耐磨表面。材料混合物被固结和烧结，以避免在所施加的材料混合物和基底之间不期望的材料迁移，从而提供具有所需硬度和/或断裂韧性性能的完全致密的磨损表面。

10. 发明授权

US06406030B1 O-ring seal with lubricant additives for rock bit bearings 失效
标题翻译： O型圈密封，带有用于岩石钻头轴承的润滑剂添加剂
公开(公告)号：US06406030B1
公开(公告)日：2002-06-18
申请号：US08943867
申请日：1997-10-08
申请人： Zhigang Fang , Robert Denton , Steven W. Peterson
发明人： Zhigang Fang , Robert Denton , Steven W. Peterson
IPC分类号： F16J1516
CPC分类号： E21B10/25 , F16J15/064 , F16J15/32 , Y10S277/944
摘要： O-ring seals for rock bit bearings comprise a body formed from an elastomeric material having one or more lubricant additive uniformly distributed throughout to reduce the coefficient of friction and stick slick amplitude at O-ring seal surfaces. The lubricant additives are selected from the group consisting of polytetrafluoroethylene, hexagonal boron nitride, flake graphite, ultra-high molecular weight polyurethane, and mixtures thereof. O-ring seals made from elastomeric compositions of this invention comprise in the range of from about 85 to 99 percent by volume elastomeric material, and in the range of from about 1 to 15 percent by volume of the lubricant additives based on the total volume of the composition.
摘要翻译：用于岩石钻头轴承的O形圈密封件包括由弹性体材料形成的主体，其具有均匀分布的一种或多种润滑剂添加剂，以降低O形环密封表面处的摩擦系数和粘性光滑振幅。润滑剂添加剂选自聚四氟乙烯，六方氮化硼，片状石墨，超高分子量聚氨酯及其混合物。由本发明的弹性体组合物制成的O形圈密封件的弹性体材料的体积含量为约85至99％，基于总体积的约1至15体积％的润滑剂添加剂组成。

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