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公开(公告)号：US07341119B2
公开(公告)日：2008-03-11
申请号：US11442520
申请日：2006-05-26
申请人： Amardeep Singh , Quan V. Nguyen , Sujian Huang
发明人： Amardeep Singh , Quan V. Nguyen , Sujian Huang
IPC分类号： E21B10/16
CPC分类号： E21B10/52 , E21B10/16 , E21B10/18 , E21B17/1092
摘要： A rolling cone rock bit includes a plurality of PDC or other cutters mounted to the leg of the drill bit and positioned to cut the corner of the bottomhole. The plurality of cutters may be the primary cutting component at gage diameter, or may be redundant to gage teeth on a rolling cutter that cut to gage diameter. Consequently, the occurrence of undergage drilling from the wear and failure of the gage row on a rolling cutter is lessened. Also included is a mud ramp that creates a large junk slot from the borehole bottom up the drill bit. The resulting pumping action of the drill bit ramp speeds up the removal of chips or drilling cuttings from the bottom of the borehole, reduces the level of hydrostatic pressure at the bottom of the borehole and minimizes the wearing effect of cone inserts regrinding damaging drill cuttings.
摘要翻译： 滚动圆锥岩石钻头包括安装到钻头的腿部并被定位成切割井底角落的多个PDC或其它切割器。 多个切割器可以是以量具直径的主要切割部件，或者可以是切割到规定直径的滚动切割器上的齿轮的多余的。 因此，减少了在轧机上的量规列的磨损和破坏的下行钻孔的发生。 还包括一个泥浆坡道，从钻孔底部向上钻出钻头创建一个大型垃圾槽。 所产生的钻头斜坡的泵送作用加快了从钻孔底部移除切屑或钻屑，降低了钻孔底部的静水压力水平，并最大限度地减少了锥形刀片磨损破坏钻屑的磨损效应。
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公开(公告)号：US06688410B1
公开(公告)日：2004-02-10
申请号：US09589260
申请日：2000-06-07
申请人： Amardeep Singh , Quan V. Nguyen , Sujian Huang
发明人： Amardeep Singh , Quan V. Nguyen , Sujian Huang
IPC分类号： E21B1046
CPC分类号： E21B10/52 , E21B10/16 , E21B10/18 , E21B17/1092
摘要： A novel rolling cone rock bit includes a plurality of PDC or other cutters mounted to the leg of the drill bit and positioned to cut the troublesome corner of the bottomhole. The plurality of cutters may be the primary cutting component at gage diameter, or may be redundant to gage teeth on a rolling cutter that cut to gage diameter. Consequently, the occurrence of undergage drilling from the wear and failure of the gage row on a rolling cutter is lessened. Another inventive feature is the inclusion of a mud ramp that creates a large junk slot from the borehole bottom up the drill bit. The resulting pumping action of the drill bit ramp speeds up the removal of chips or drilling cuttings from the bottom of the borehole, reduces the level of hydrostatic pressure at the bottom of the borehole and minimizes the wearing effect of cone inserts regrinding damaging drill cuttings.
摘要翻译： 一种新型的滚动圆锥岩石钻头包括多个PDC或其它切割器，其安装在钻头的腿部并被定位成切割井底的麻烦的角落。 多个切割器可以是以量具直径的主要切割部件，或者可以是切割到规定直径的滚动切割器上的齿轮的多余的。 因此，减少了在轧机上的量规列的磨损和破坏的下行钻孔的发生。 另一个创造性的特征是包括泥浆斜坡，其从钻孔底部的钻头上方产生大的垃圾槽。 所产生的钻头斜坡的泵送作用加快了从钻孔底部移除切屑或钻屑，降低了钻孔底部的静水压力水平，并最大限度地减少了锥形刀片磨损破坏钻屑的磨损效应。
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公开(公告)号：US07059430B2
公开(公告)日：2006-06-13
申请号：US10081275
申请日：2002-02-21
申请人： Amardeep Singh , Quan V. Nguyen , Sujian Huang
发明人： Amardeep Singh , Quan V. Nguyen , Sujian Huang
IPC分类号： E21B10/18
CPC分类号： E21B10/52 , E21B10/16 , E21B10/18 , E21B17/1092
摘要： A novel rolling cone rock bit includes a plurality of PDC or other cutters mounted to the leg of the drill bit and positioned to cut the troublesome corner of the bottomhole. The plurality of cutters may be the primary cutting component at gage diameter, or may be redundant to gage teeth on a rolling cutter that cut to gage diameter. Consequently, the occurrence of undergage drilling from the wear and failure of the gage row on a rolling cutter is lessened. Another inventive feature is the inclusion of a mud ramp that creates a large junk slot from the borehole bottom up the drill bit. The resulting pumping action of the drill bit ramp speeds up the removal of chips or drilling cuttings from the bottom of the borehole, reduces the level of hydrostatic pressure at the bottom of the borehole and minimizes the wearing effect of cone inserts regrinding damaging drill cuttings.
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公开(公告)号：US06533051B1
公开(公告)日：2003-03-18
申请号：US09390717
申请日：1999-09-07
IPC分类号： E21B1022
摘要： A roller cone drill bit includes a bit body adapted to be rotated about a longitudinal axis. At least one leg which terminates in a shirttail portion depends from the bit body. The shirttail portion defines a first end face having a first circumferential groove thereon. The first circumferential groove has a radius equal to the radius of a tip of the shirttail portion. A journal is cantilevered from the leg, and a roller cone is rotatably mounted on the journal. The roller cone has a second end face adjacent to the first end face. A second circumferential groove is formed on the second end face.
摘要翻译： 辊锥钻头包括适于围绕纵向轴线旋转的钻头体。 终止于衬衫尾部的至少一条腿取决于钻头体。 衬衫部分限定其上具有第一周向槽的第一端面。 第一周向槽的半径等于衬衫尾部的前端的半径。 轴颈悬臂，轴颈可旋转地安装在轴颈上。 滚子锥体具有与第一端面相邻的第二端面。 在第二端面上形成第二圆周槽。
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公开(公告)号：US5131480A
公开(公告)日：1992-07-21
申请号：US737640
申请日：1991-07-30
申请人： Alan W. Lockstedt , Quan V. Nguyen
发明人： Alan W. Lockstedt , Quan V. Nguyen
摘要： A milled tooth rotary cone rock bit, as it is operated in a borehole, subjects the heel of each cone into contact with the borehole wall when the gage row milled teeth wear. The heel row of each cone is relieved and tungsten carbide chisel inserts are equidistantly placed within the relieved heel row. The heel row inserts cooperate with the gage row milled teeth and progressively cut more of the gage of the borehole as the row of milled teeth on the gage of the cone wear. Moreover, the gage row milled teeth are partially hardfaced leaving relieved areas on the cutting side of each tooth to enhance the cutting action of the gage row of each cone.
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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：US5494123A
公开(公告)日：1996-02-27
申请号：US317340
申请日：1994-10-04
申请人： Quan V. Nguyen
发明人： Quan V. Nguyen
CPC分类号： E21B10/52 , E21B17/1092
摘要： A rotary cone rock bit has bearing inserts pressed into the side of the shirttail portion of the rock bit body for stabilizing the rock bit during drilling. Such a rock bit has a steel bit body with a threaded upper pin for connection to a drill string. Cutter cones are mounted on lower leg portions of the rock bit body. The rock bit body gradually decreases in diameter from the gage diameter adjacent the lower tips of the shirttails adjacent to the cones to a smaller diameter shoulder the pin end of the body. The lowermost bearing insert protrudes laterally from the gradually decreasing diameter part of the bit body approximately half way between the lower tip of the shirttail and the shoulder at the upper end of the shirttail. The outer ends of the bearing inserts are rounded and substantially at the gage diameter of the bit for bearing on the wall of the borehole being drilled without appreciably reaming the borehole. The bearing inserts may have a layer of polycrystalline diamond on the protruding ends for minimizing wear. The protruding bearing inserts stabilize the bit without disrupting fluid flow around the bit.
摘要翻译： 旋转锥形岩石钻头具有压入岩石钻头体的衬衫尾部的侧面的轴承插件，用于在钻孔期间稳定岩石钻头。 这种钻头具有带有螺纹上销的钢钻头体，用于连接到钻柱。 切割锥安装在岩石钻头体的小腿部分上。 岩石钻头体从邻近锥体的衬衫尾部的下尖端的规格直径逐渐减小到身体的销端的较小直径肩部。 最下方的轴承插入件从钻头体的逐渐减小的直径部分横向延伸，大约在衬衫的下端和衬衫上端的肩部之间的一半处。 轴承插入件的外端是圆形的并且基本上在钻头的量规直径处，用于承受钻孔的壁上的钻孔，而不会明显地扩孔。 轴承插入件可以在突出端上具有一层多晶金刚石以最小化磨损。 突出的轴承插入件稳定钻头，而不会中断钻头周围的流体流动。
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公开(公告)号：US06367568B1
公开(公告)日：2002-04-09
申请号：US09858138
申请日：2001-05-15
IPC分类号： E21B1008
摘要： A cutter element for a drill bit. The cutter element has a base portion and an extending portion and the extending portion has either a zero draft or a negative draft with respect to the base portion. The non-positive draft allows more of the borehole bottom to be scraped using fewer cutter elements. The cutter elements having non-positive draft can be either tungsten carbide inserts or steel teeth.
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公开(公告)号：US5027913A
公开(公告)日：1991-07-02
申请号：US507827
申请日：1990-04-12
申请人： Quan V. Nguyen
发明人： Quan V. Nguyen
IPC分类号： E21B10/16
CPC分类号： E21B10/16
摘要： The inserts for a roller cone of a multiple cone rock bit are positioned or angled in the cone to attack an earthen formation such that the inserts are subjected to more compressive forces and the formation is subjected to more shear forces as the roller cutters roll over the bottom of the formation.
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公开(公告)号：US07252164B2
公开(公告)日：2007-08-07
申请号：US10816542
申请日：2004-04-01
摘要： A drill bit configures hydraulic streams from the bit nozzles for the particular cutting structure to be cleaned based on the cutting structure location and geometry. The projected impingement location for each hydraulic stream projected fluid path is customized for a corresponding roller cone, with each nozzle or nozzle receptacle being individually positioned according to improve cone cleaning. At least two nozzles or nozzle receptacles should differ on the drill bit.
摘要翻译： 基于切割结构位置和几何形状，钻头针对待清洁的特定切割结构从钻头喷嘴构造液压流。 每个液压流投影流体路径的预计冲击位置是针对相应的滚子锥定制的，每个喷嘴或喷嘴容器根据改进的锥体清洁单独定位。 钻头上至少有两个喷嘴或喷嘴容器应有所不同。
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