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公开(公告)号：US06179296B2
公开(公告)日：2001-01-30
申请号：US09090556
申请日：1998-06-04
IPC分类号： F21B3310
CPC分类号： E21B10/25 , F16J15/32 , F16J15/344 , Y10S277/91 , Y10S277/944
摘要： Dual functioning seals for use in forming a lubricant seal in a rotary rock bit comprise an annular elastomeric seal body having a dynamic seal surface for sealing against a dynamic surface and a static seal surface for sealing against a static surface. The seal body has an asymmetric axial cross-sectional geometry the dynamic seal surface having a greater radius of curvature than that of the static seal surface. The dynamic and static seal surfaces are formed from different elastomeric materials, and the dynamic seal surface is formed from an elastomeric material that is harder and more wear resistant than the elastomeric material used to form the static seal surface. A rotary rock bit seal constructed in this manner is well adapted to accommodate the different operating conditions and sealing requirements that exist both at the dynamic and static surfaces of the seal to ensure optimal seal performance and, thereby enhance the service life of the rock bit.
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公开(公告)号：US06170830B2
公开(公告)日：2001-01-09
申请号：US09090448
申请日：1998-06-04
IPC分类号： F16J1534
CPC分类号： E21B10/25 , F16J15/32 , F16J15/344 , Y10S277/91 , Y10S277/944
摘要： Dual functioning seals for use in forming a lubricant seal in a rotary rock bit comprise an annular elastomeric seal body having a dynamic seal surface for sealing against a dynamic surface and a static seal surface for sealing against a static surface. The seal body has an asymmetric axial cross-sectional geometry the dynamic seal surface having a greater radius of curvature than that of the static seal surface. The dynamic and static seal surfaces are formed from different elastomeric materials, and the dynamic seal surface is formed from an elastomeric material that is harder and more wear resistant than the elastomeric material used to form the static seal surface. A rotary rock bit seal constructed in this manner is well adapted to accommodate the different operating conditions and sealing requirements that exist both at the dynamic and static surfaces of the seal to ensure optimal seal performance and, thereby enhance the service life of the rock bit.
摘要翻译： 用于在旋转岩石钻头中形成润滑剂密封件的双功能密封件包括环形弹性密封体，其具有用于密封动态表面的动态密封表面和用于密封静态表面的静态密封表面。 密封体具有不对称的轴向横截面几何形状，动态密封表面具有比静态密封表面更大的曲率半径。 动态和静态密封表面由不同的弹性体材料形成，并且动态密封表面由弹性体材料形成，弹性体材料比用于形成静态密封表面的弹性体材料更硬且更耐磨。 以这种方式构造的旋转岩石钻头密封圈非常适合于适应在密封件的动态和静态表面处存在的不同操作条件和密封要求，以确保最佳的密封性能，从而提高岩石钻头的使用寿命。
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公开(公告)号：US5842701A
公开(公告)日：1998-12-01
申请号：US727275
申请日：1996-10-08
CPC分类号： E21B10/25 , F16J15/32 , F16J15/344 , Y10S277/91 , Y10S277/944
摘要： Dual functioning seals for use in forming a lubricant seal in a rotary rock bit comprise an annular elastomeric seal body having a dynamic seal surface for sealing against a dynamic surface and a static seal surface for sealing against a static surface. The seal body has an asymmetric axial cross-sectional geometry the dynamic seal surface having a greater radius of curvature than that of the static seal surface. The dynamic and static seal surfaces are formed from different elastomeric materials, and the dynamic seal surface is formed from an elastomeric material that is harder and more wear resistant than the elastomeric material used to form the static seal surface. A rotary rock bit seal constructed in this manner is well adapted to accommodate the different operating conditions and sealing requirements that exist both at the dynamic and static surfaces of the seal to ensure optimal seal performance and, thereby enhance the service life of the rock bit.
摘要翻译： 用于在旋转岩石钻头中形成润滑剂密封件的双功能密封件包括环形弹性密封体，其具有用于密封动态表面的动态密封表面和用于密封静态表面的静态密封表面。 密封体具有不对称的轴向横截面几何形状，动态密封表面具有比静态密封表面更大的曲率半径。 动态和静态密封表面由不同的弹性体材料形成，并且动态密封表面由弹性体材料形成，弹性体材料比用于形成静态密封表面的弹性体材料更硬且更耐磨。 以这种方式构造的旋转岩石钻头密封圈非常适合于适应在密封件的动态和静态表面处存在的不同操作条件和密封要求，以确保最佳的密封性能，从而提高岩石钻头的使用寿命。
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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
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
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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
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
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6.发明授权Method for simulating drilling of roller cone bits and its application to roller cone bit design and performance 有权用于模拟圆锥钻头钻孔的方法及其在圆锥钻头设计和性能中的应用公开(公告)号：US06516293B1
公开(公告)日：2003-02-04
申请号：US09524088
申请日：2000-03-13
申请人： Sujian Huang , Chris E. Cawthorne
发明人： Sujian Huang , Chris E. Cawthorne
IPC分类号： G06F9455
CPC分类号： E21B10/16
摘要： A method for simulating the drilling performance of a roller cone bit drilling an earth formation may be used to generate a visual representation of drilling, to design roller cone drill bits, and to optimize the drilling performance of a roller cone bit. The method for generating a visual representation of a roller cone bit drilling earth formations includes selecting bit design parameters, selecting drilling parameters, and selecting an earth formation to be drilled. The method further includes calculating, from the bit design parameters, drilling parameters and earth formation, parameters of a crater formed when one of a plurality of cutting elements contacts the earth formation. The method further includes calculating a bottomhole geometry, wherein the crater is removed from a bottomhole surface. The method also includes incrementally rotating the bit and repeating the calculating of crater parameters and bottomhole geometry based on calculated roller cone rotation speed and geometrical location with respect to rotation of said roller cone drill bit about its axis. The method also includes converting the crater and bottomhole geometry parameters into a visual representation.
摘要翻译： 可以使用用于模拟钻孔地层的圆锥钻头的钻孔性能的方法来产生钻孔，设计滚子锥钻头以及优化滚子锥钻头的钻孔性能的视觉表示。 用于产生辊锥钻头钻井地层的视觉表示的方法包括选择钻头设计参数，选择钻孔参数以及选择要钻探的地层。 该方法还包括从钻头设计参数中计算钻孔参数和地层形成，当多个切割元件中的一个切割元件接触地层时形成的火山口的参数。 该方法还包括计算井眼几何形状，其中从井底表面移除火山口。 该方法还包括增量地旋转钻头并基于相对于所述滚子锥形钻头围绕其轴线的旋转的计算的滚子锥体旋转速度和几何位置来重复计算火山口参数和井底几何形状。 该方法还包括将火山口和井底几何参数转换成视觉表示。
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公开(公告)号：US06439326B1
公开(公告)日：2002-08-27
申请号：US09546476
申请日：2000-04-10
申请人： Sujian Huang , Chris E. Cawthorne
发明人： Sujian Huang , Chris E. Cawthorne
IPC分类号： E21B1008
CPC分类号： E21B17/1092 , E21B10/14 , E21B10/20 , E21B10/26 , E21B10/28
摘要： A drill bit including a roller cone and fixed cutters positioned external to the roller cone and radially from the bit axis of rotation. The roller cone is located so that a drill diameter of the cone is substantially concentric with an axis of rotation of the bit. The fixed cutters can be made of tungsten carbide, polycrystalline diamond, boron nitride, or any other superhard material. The fixed cutters are positioned to either maintain the hole diameter drilled by the roller cone or to drill a larger diameter hole than the hole drilled by the roller cone. The single roller cone may be located in the center of a multi-cone bit arrangement or in the center of a PDC bit to assist in drilling the center of a wellbore. The single roller cone may be used to form a bi-center bit in combination with a reaming section. The single roller cone may also be located on an independent sub that is removably attached to the bit body.
摘要翻译： 一个钻头，包括一个位于滚子锥体外部的圆锥体和固定切割器，并且从钻头的旋转轴线径向旋转。 辊锥体的位置使得锥体的钻头直径基本上与钻头的旋转轴同心。 固定刀具可以由碳化钨，多晶金刚石，氮化硼或任何其他超硬材料制成。 固定刀具被定位成保持由辊锥体钻出的孔直径或钻出比由辊锥体钻出的孔更大的孔。 单辊锥体可以位于多圆锥钻头的中心或PDC钻头的中心，以帮助钻井孔的中心。 单辊锥体可以用于与扩孔部分组合形成双中心钻头。 单个辊锥体也可以位于可拆卸地附接到钻头体上的独立的子部件上。
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公开(公告)号：US06651757B2
公开(公告)日：2003-11-25
申请号：US09858857
申请日：2001-05-16
申请人： Dan Belnap , Nathan Anderson , Michael A. Siracki , Sujian Huang
发明人： Dan Belnap , Nathan Anderson , Michael A. Siracki , Sujian Huang
IPC分类号： E21B1000
CPC分类号： E21B10/567 , C04B35/111 , C04B35/486 , C04B35/56 , C04B35/58 , C04B35/645 , C04B2235/3217 , C04B2235/3244 , C04B2235/3272 , C04B2235/3275 , C04B2235/3279 , C04B2235/3817 , C04B2235/3852 , C04B2235/404 , C04B2235/405 , C04B2235/5436 , C04B2235/80 , C04B2235/96 , E21B10/52 , E21B10/5676
摘要： An insert for a drill bit is disclosed which includes an exposed surface having a contact portion adapted to periodically contact earthen formation. The contact portion includes a polycrystalline diamond material having a hardness in the range of about 2000 HV to about 3000 HV. In some embodiments, the polycrystalline diamond material includes a composite having a first phase material including polycrystalline diamond and a second phase material selected from the group of oxide particulates metal carbides, and metallic particulates, nitrides, and mixtures of thereof.
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公开(公告)号：US06536542B1
公开(公告)日：2003-03-25
申请号：US09428878
申请日：1999-10-28
申请人： Zhigang Fang , Chris Cawthorne , Nephi M. Mourik , Sujian Huang
发明人： Zhigang Fang , Chris Cawthorne , Nephi M. Mourik , Sujian Huang
IPC分类号： E21B1022
CPC分类号： E21B10/25
摘要： Seals of this invention comprise an annular elastomeric ring-shaped body having a dynamic surface disposed along a first body portion, the dynamic surface comprising at least two surface elements that project outwardly therefrom to provide multiple barriers to fluid and debris migration thereacross when placed into contact with a rock bit rotary dynamic surface. The seal dynamic surface includes a recessed portion disposed between the surface elements, and a static seal surface disposed along a second body portion. At least one of the surface elements includes a wear surface that is formed from a material that is more wear resistant than materials that are used to form a remaining portion of the seal. A preferred wear surface is one formed from a composite material comprising a fabric of nonelastomeric polymeric material that is bonded together with an elastomeric material. Seals of this invention provide improved properties of both wear resistance and sealability when compared to conventional seals having a single dynamic seal surface.
摘要翻译： 本发明的密封件包括具有沿着第一主体部分设置的动态表面的环形弹性体环形主体，动态表面包括至少两个从其向外突出的表面元件，以在放置接触时为其提供流体和碎屑迁移的多个障碍 具有岩石旋转动态表面。 密封动态表面包括设置在表面元件之间的凹陷部分和沿着第二主体部分设置的静态密封表面。 至少一个表面元件包括由比用于形成密封件的剩余部分的材料更耐磨的材料形成的磨损表面。 优选的磨损表面是由复合材料形成的，该复合材料包括与弹性体材料结合在一起的非弹性聚合材料的织物。 与具有单个动态密封表面的常规密封件相比，本发明的密封件提供改进的耐磨性和密封性能。
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10.发明授权公开(公告)号：US07844426B2
公开(公告)日：2010-11-30
申请号：US10888523
申请日：2004-07-09
申请人： Sujian Huang
发明人： Sujian Huang
IPC分类号： G06G7/48
摘要： In one aspect, the invention provides a method for modeling the dynamic performance of a fixed cutter bit drilling earth formations. In one embodiment, the method includes selecting a drill bit and an earth formation to be represented as drilled, simulating the bit drilling the earth formation. The simulation includes at least numerically rotating the bit, calculating bit interaction with the earth formation during the rotating, and determining the forces on the cutters during the rotation based on the calculated interaction with earth formation and empirical data.
摘要翻译： 一方面，本发明提供了一种用于建模固定切削钻头钻井地层的动态性能的方法。 在一个实施例中，该方法包括选择要被表示为钻孔的钻头和地层，以模拟钻地层的钻头。 模拟包括至少数字旋转钻头，在旋转期间计算与地层形成的钻头相互作用，以及基于所计算的与地层形成的相互作用和经验数据来确定旋转期间切割器上的力。
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