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公开(公告)号：US06336512B1
公开(公告)日：2002-01-08
申请号：US09495602
申请日：2000-02-01
IPC分类号： E21B1008
CPC分类号： E21B10/25
摘要： A drill bit having a canted or non-canted leg backface, a canted or non-canted seal in the interface between the cone backface and the shirttail, and a canted seal that can be semi-encapsulated so that there is no straight-line path across the seal.
摘要翻译： 具有倾斜或非倾斜腿背面的钻头，锥形背面和衬衫尾部之间的界面中的倾斜或非倾斜密封，以及可以被半封装以使得不存在直线路径的倾斜密封 穿过印章。
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公开(公告)号：US06571887B1
公开(公告)日：2003-06-03
申请号：US09547691
申请日：2000-04-12
IPC分类号： E21B1018
摘要： A drill bit having one or more nozzle retention bodies attached by a single orientation mounting is disclosed, as is the associated method for its manufacture. The upper end of the nozzle retention body has a fluid inlet in communication with the internal fluid plenum of the drill bit, and the lower end of the nozzle retention body includes a fluid outlet that defines an exit flow angle. The exit flow angle is angularly disposed from the longitudinal axis of the drill bit. The nozzle retention body may advantageously be chamfered or the like to provide a reduced cross-sectional area at the lower end of the nozzle retention body. The outer surface of the nozzle retention body (and attached hardened elements) may extend substantially to gage, or may fall short of that diameter.
摘要翻译： 公开了具有通过单个定向安装附接的一个或多个喷嘴保持体的钻头，以及其制造的相关方法。 喷嘴保持体的上端具有与钻头的内部流体通风室连通的流体入口，并且喷嘴保持体的下端包括限定出口流动角的流体出口。 出口流动角度与钻头的纵向轴线成角度地设置。 喷嘴保持体可以有利地被倒角等，以在喷嘴保持体的下端提供减小的横截面面积。 喷嘴保持体（和附着的硬化元件）的外表面可以基本上延伸到规定的范围内，或者可以不超过该直径。
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公开(公告)号：US06460637B1
公开(公告)日：2002-10-08
申请号：US09707612
申请日：2000-11-07
申请人： Michael A. Siracki , Chris E. Cawthorne , Per I. Nese , Madapusi K. Keshavan , J. Daniel Belnap , Ronald K. Eyre , Nathan R. Anderson
发明人： Michael A. Siracki , Chris E. Cawthorne , Per I. Nese , Madapusi K. Keshavan , J. Daniel Belnap , Ronald K. Eyre , Nathan R. Anderson
IPC分类号： E21B1036
CPC分类号： E21B17/1092 , E21B10/56
摘要： Enhanced inserts are formed having a cylindrical grip and a protrusion extending from the grip. An ultra hard material layer is bonded on top of the protrusion. The inserts are mounted on a rock bit and contact the earth formations off center. The ultra hard material layer is thickest at a critical zone which encompasses a major portion of the region of contact between the insert and the earth formation. Transition layers may also be formed between the ultra hard material layer and the protrusion so as to reduce the residual stresses formed on the interface between the ultra hard material and the protrusion.
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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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5.发明授权
公开(公告)号：US5351770A
公开(公告)日：1994-10-04
申请号：US78123
申请日：1993-06-15
IPC分类号： E21B10/16 , E21B10/52 , E21B10/56 , E21B10/567
CPC分类号： E21B10/5673 , E21B10/16 , E21B10/52
摘要： A rotary cone rock bit for drilling boreholes in an earthen formation is disclosed. One or more rotary cones are rotatively retained on a journal bearing connected to the rock bit. These rotary cones form a circumferential heel row with extended ultra hard shaped cutters spaced within the heel row. Each of the shaped cutters form a cutting surface that extends above the heel row or is angled with respect to the formation to maintain the cutters in compression while the cutters shear a borehole wall. The shaped cutters serve to maintain the borehole diameter.
摘要翻译： 公开了一种用于在土层中钻孔的旋转锥形钻头。 一个或多个旋转锥体旋转地保持在连接到岩石钻头的轴颈轴承上。 这些旋转锥体形成具有在脚后跟行间隔开的延伸的超硬质切割器的圆周跟部行。 每个成形切割器形成一个切割表面，该切割表面在跟部行上方延伸，或相对于地层成角度，以在切割器剪切钻孔壁时保持切割器处于压缩状态。 成形刀具用于维持钻孔直径。
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6.发明授权
公开(公告)号：US5341890A
公开(公告)日：1994-08-30
申请号：US2295
申请日：1993-01-08
IPC分类号： E21B10/52 , E21B10/56 , E21B10/567 , E21B10/16 , E21B10/50
CPC分类号： E21B10/5673 , E21B10/52
摘要： A rotary cone rock bit for drilling boreholes in an earthen formation is disclosed. One or more rotary cones are rotatively retained on a journal bearing connected to the rock bit. These rotary cones form a circumferential heel row with extended ultra hard shaped cutters spaced within the heel row. Each of the shaped cutters form cutting edges that shear a borehole wall formed by the formation as the rotary cone rotates against a bottom of the borehole formed by the formation. The shaped cutters serve to maintain the borehole diameter and to divert formation debris away from bearing surfaces formed between the rotary cone and the journal bearing.
摘要翻译： 公开了一种用于在土层中钻孔的旋转锥形钻头。 一个或多个旋转锥体旋转地保持在连接到岩石钻头的轴颈轴承上。 这些旋转锥体形成具有在脚后跟行间隔开的延伸的超硬质切割器的圆周跟部行。 每个成形切割器形成切割边缘，该切割边缘当旋转锥体相对于由地层形成的钻孔的底部旋转时，剪切由地层形成的钻孔壁。 成形刀具用于保持井眼直径并将地层碎屑从形成在旋转锥体和轴颈轴承之间的支承表面转移。
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公开(公告)号：US5172779A
公开(公告)日：1992-12-22
申请号：US798435
申请日：1991-11-26
摘要： A chisel insert for rolling cone rock bits is disclosed in which the crest of the insert has a "dog bone" shape by being rounded with the crest ends flaring out to a larger dimension than the middle thereof. The crest is also convex upwardly along its median line thereby making a shorter moment arm at the ends of the crest.
摘要翻译： 公开了一种用于滚动锥形岩石钻头的凿子插入件，其中刀片的顶部具有“狗骨”形状，其圆顶部的顶端扩展到比其中间更大的尺寸。 波峰也沿其中线向上凸起，从而在波峰的端部形成较短的力矩臂。
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公开(公告)号：US06460636B1
公开(公告)日：2002-10-08
申请号：US09465631
申请日：1999-12-17
申请人： Zhou Yong , Suprant J. Huang , Nathan R. Anderson , J. Daniel Belnap , Chris E. Cawthorne , Ronald K. Eyre , Madapusi K. Keshavan , Per I. Nese , Michael A. Siracki , Gary R. Portwood
发明人： Zhou Yong , Suprant J. Huang , Nathan R. Anderson , J. Daniel Belnap , Chris E. Cawthorne , Ronald K. Eyre , Madapusi K. Keshavan , Per I. Nese , Michael A. Siracki , Gary R. Portwood
IPC分类号： E21B1046
CPC分类号： E21B10/5673 , E21B10/56 , E21B10/573 , E21B10/5735 , E21B17/1092
摘要： A cutter element for use in a drill bit, comprising a substrate and a cutting layer. The substrate comprises a grip portion and an extension portion, where the grip portion has an insert axis and an extension portion including an interface surface having a first apex. The cutting layer is affixed to the interface surface and has a cutting surface having a second apex. The cutting layer is shaped such that when a plane passing through the first apex and lying parallel to the insert axis and normal to a radius from the insert axis, the plane divides the cutting layer into major and minor portions and the major portion has a major volume that is at least 60 percent of the total volume of said cutting layer. Alternative embodiments of the present invention include variations wherein the first and second apices do not coincide and wherein the interface surface of the substrate is not axisymmetric. Using these variations, cutter elements having sizeable variations in thickness are constructed.
摘要翻译： 一种用于钻头的切割元件，包括基底和切割层。 基板包括握持部分和延伸部分，其中握持部分具有插入轴线和包括具有第一顶点的界面的延伸部分。 切割层固定在界面表面上并具有具有第二顶点的切割表面。 切割层被成形为使得当平面穿过第一顶点并且平行于插入轴线平行并且平行于插入轴线的半径时，该平面将切割层分成主要和次要部分，并且主要部分具有主要部分 体积为所述切割层的总体积的至少60％。 本发明的替代实施例包括其中第一和第二顶点不重合并且其中基底的界面不是轴对称的变型。 使用这些变型，构造了具有相当大的厚度变化的切割元件。
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公开(公告)号：US06199645B1
公开(公告)日：2001-03-13
申请号：US09023264
申请日：1998-02-13
申请人： Nathan R. Anderson , J. Daniel Belnap , Chris E. Cawthorne , Ronald K. Eyre , Madapusi K. Keshavan , Per I. Nese , Michael A. Siracki , Gary R. Portwood
发明人： Nathan R. Anderson , J. Daniel Belnap , Chris E. Cawthorne , Ronald K. Eyre , Madapusi K. Keshavan , Per I. Nese , Michael A. Siracki , Gary R. Portwood
IPC分类号： E21B1046
CPC分类号： E21B17/1092 , E21B10/56
摘要： Enhanced inserts are formed having a cylindrical grip and a protrusion extending from the grip. An ultra hard material layer is bonded on top of the protrusion. The inserts are mounted on a rock bit and contact the earth formations off center. The ultra hard material layer is thickest at a critical zone which encompasses a major portion of the region of contact between the insert and the earth formation. Transition layers may also be formed between the ultra hard material layer and the protrusion so as to reduce the residual stresses formed on the interface between the ultra hard material and the protrusion.
摘要翻译： 增强的插入件形成有具有圆柱形把手和从握柄延伸的突出部。 超硬材料层结合在突起的顶部。 插入件安装在岩石钻头上，并与中心的地层接触。 超硬材料层在包括插入件和地层之间的接触区域的主要部分的临界区域是最厚的。 也可以在超硬材料层和突起之间形成过渡层，以减少在超硬材料和突起之间的界面上形成的残余应力。
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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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