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公开(公告)号：US5758733A
公开(公告)日：1998-06-02
申请号：US633983
申请日：1996-04-17
申请人： Danny E. Scott , Rudolf Carl Otto Pessier , Robert J. Farr , Stephen R. Jurewicz , Kenneth M. Jensen , Paul D. Jones
发明人： Danny E. Scott , Rudolf Carl Otto Pessier , Robert J. Farr , Stephen R. Jurewicz , Kenneth M. Jensen , Paul D. Jones
IPC分类号： E21B10/16 , E21B10/46 , E21B10/52 , E21B10/56 , E21B10/567
CPC分类号： E21B10/5673 , E21B10/16 , E21B10/52
摘要： An earth-boring bit has a bit body and at least one cantilevered bearing shaft depending inwardly and downwardly from the bit body. A cutter is mounted for rotation on the bearing shaft and includes a plurality of cutting elements. At least one of the cutting elements has a generally cylindrical body formed of hard metal with a convex cutting end. A plurality of substantially linear, parallel lands are formed on the cutting end of the body. The lands have arcuate top surfaces and define grooves between the land having arcuate bottom surfaces. A layer of super-hard material is formed on the cutting end of the body and engages the lands and grooves formed thereon.
摘要翻译： 钻头具有一定体积，至少有一个悬臂轴承轴从钻头体向内和向下偏移。 安装刀具用于在轴承轴上旋转并且包括多个切割元件。 至少一个切割元件具有由具有凸形切割端的硬质金属形成的大致圆柱形的主体。 在主体的切割端上形成有多个基本上线性的平行的平台。 土地具有弧形的顶部表面并且在具有弓形底部表面的区域之间限定凹槽。 一层超硬材料形成在主体的切割端上并与其上形成的凸台和凹槽接合。
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公开(公告)号：US5752573A
公开(公告)日：1998-05-19
申请号：US695442
申请日：1996-08-12
IPC分类号： E21B10/16 , E21B10/52 , E21B10/56 , E21B10/567 , E21B10/50
CPC分类号： E21B10/5673 , E21B10/16 , E21B10/52
摘要： An earth-boring bit has a bit body. At least one cantilevered bearing shaft depends inwardly and downwardly from the bit body and a cutter is mounted for rotation on the bearing shaft. The cutter includes a plurality of cutting elements, at least one of which has a generally cylindrical element body of hard metal. A pair of flanks extend from the body and converge to define a crest. The crest defines at least one sharp cutting edge at its intersection with one of the flanks.
摘要翻译： 一个无聊的钻头有一点点的身体。 至少一个悬臂轴承轴从钻头体向内和向下定位，并且安装有用于在轴承轴上旋转的切割器。 切割器包括多个切割元件，其中至少一个切割元件具有大致圆柱形的金属元件本体。 一对侧翼从身体延伸并收敛以形成一个顶部。 顶部在与其中一个侧面的交叉处限定至少一个锋利的切削刃。
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公开(公告)号：US5746280A
公开(公告)日：1998-05-05
申请号：US695509
申请日：1996-08-12
IPC分类号： E21B10/16 , E21B10/52 , E21B10/56 , E21B10/567 , E21B10/573
CPC分类号： E21B10/567 , E21B10/16 , E21B10/52 , E21B10/5673 , E21B10/5676 , E21B10/5735 , E21B17/1092
摘要： An earth-boring bit has a bit body and at least one cantilevered bearing shaft depending inwardly and downwardly from the bit body. A cutter is mounted for rotation on the bearing shaft and includes a plurality of cutting elements arranged in generally circumferential rows, including inner heel rows, of cutting elements. At least one of the cutting elements in one of the inner rows has a crest at least partially formed of super-hard material that defines a cutting edge and cutting surface for shearing engagement with the bottom of the borehole during drilling operations, the remainder of the cutting end of the element is formed of hard, fracture-tough material for crushing engagement with the bottom of the borehole.
摘要翻译： 钻头具有一定体积，至少有一个悬臂轴承轴从钻头体向内和向下偏移。 安装刀具以在轴承轴上旋转，并且包括多个切割元件，该切割元件大致圆周地排列，包括切割元件的内脚跟行。 内排中的一个切割元件中的至少一个切割元件具有至少部分由超硬材料形成的顶部，该超硬材料限定了在钻孔操作期间与钻孔底部剪切接合的切割边缘和切割表面，其余部分 元件的切割端由硬的断裂韧性材料形成，用于与钻孔的底部破碎接合。
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公开(公告)号：US07350600B2
公开(公告)日：2008-04-01
申请号：US11511119
申请日：2006-08-28
申请人： Christopher C. Beuershausen , Raul E. Lema , Ronald Hales , Don Q. Nguyen , Gregory L. Ricks , Chih C. Lin , Terry J. Koltermann , Mark E. Morris , Chris M. McCarty , Ronald L. Jones , James L. Overstreet , Rudolf Carl Otto Pessier
发明人： Christopher C. Beuershausen , Raul E. Lema , Ronald Hales , Don Q. Nguyen , Gregory L. Ricks , Chih C. Lin , Terry J. Koltermann , Mark E. Morris , Chris M. McCarty , Ronald L. Jones , James L. Overstreet , Rudolf Carl Otto Pessier
IPC分类号： E21B10/50
CPC分类号： E21B10/08
摘要： An earth-boring bit has a bit body that includes head sections, each having depending bit legs with a circumferentially extending outer surface, a leading side, and a trailing side. A bearing shaft depends inwardly from each of the bit legs for mounting a cutter. The bit includes a beveled surface formed at a junction of the leading side and the outer surface of each bit leg. The beveled surface is angled relative to a radial plane emenating from the axis of the bit. The angle of the beveled surface is at least 20 degrees, and extends to an inner surface of the bit leg. The bit can also have a layer of hardfacing on the leading, trailing and shirttail surfaces of the bit leg. A diversion finger of hardfacing extends circumferentially to direct cuttings.
摘要翻译： 钻头具有包括头部部分的头部部件，每个头部部分具有具有周向延伸的外表面，前导侧和后侧的依附的位腿。 轴承轴从每个钻头腿向内取向，用于安装切割器。 该钻头包括形成在每个钻头腿的前侧和外表面的接合处的斜面。 倾斜表面相对于从钻头的轴线发出的径向平面成角度。 斜面的角度至少为20度，并且延伸到钻头的内表面。 该位还可以在位腿的前导，尾部和衬衫表面上具有一层硬面。 硬面的转向手指周向延伸以直接切割。
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公开(公告)号：US06209668B1
公开(公告)日：2001-04-03
申请号：US09170528
申请日：1998-10-13
IPC分类号： E21B1000
CPC分类号： E21B10/567 , E21B10/006 , E21B10/16 , E21B10/52 , E21B17/1092
摘要： An earth-boring bit has a bit body and at least one cutter rotatably secured to the bit body. The cutter has a cutter shell surface including a gage surface and a heel surface. A plurality of cutting elements inserts are arranged in generally circumferential rows on the cutter. At least one scraper cutting element is secured at least partially to the heel surface of the cutter. The scraper cutting element includes an outermost surface, generally aligned with the gage surface of the cutter, that defines a plow edge or point for shearing engagement with the sidewall of the borehole while redirecting cuttings up the borehole.
摘要翻译： 钻头具有一个位体，并且至少一个切割器可旋转地固定到钻头体上。 切割器具有包括表面和跟部表面的切割器外壳表面。 多个切割元件插入件在切割器上大致圆周排布置。 至少一个刮刀切割元件至少部分地固定到切割器的后跟表面。 刮刀切割元件包括通常与切割器的表面对齐的最外表面，该最外表面限定了用于与钻孔的侧壁剪切接合的犁边或点，同时将钻屑重新导向钻孔。
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公开(公告)号：US4089382A
公开(公告)日：1978-05-16
申请号：US784019
申请日：1977-04-04
CPC分类号： E21B10/10 , Y10T403/76
摘要： A large hole earth boring bit with a clevis-type coupling for mounting the rolling cutters to the bit. The mounting apparatus includes a first member having two ends with aligned holes and a second member having its end inserted between the two ends. The end of the second member has an aperture that is spaced slightly out of alignment with the apertures in the first member, providing a generally elliptical passage. Bearing surfaces prevent them from coming into alignment. A pair of wedges are inserted into the elliptical passage and drawn together to exert a force in the direction toward alignment of the apertures. The force exerted is transmitted into the base, positively locking the two members together.
摘要翻译： 一个大孔钻头，带有U形夹式联轴器，用于将滚刀安装到钻头上。 安装装置包括具有对准的孔的两端的第一构件和其端部插入在两端之间的第二构件。 第二构件的端部具有与第一构件中的孔略微不对准的孔，提供大致椭圆形的通道。 轴承表面防止它们对齐。 将一对楔形物插入到椭圆形通道中并被拉伸在一起以朝向孔的对准方向施加力。 施加的力传递到基座中，将两个构件正确地锁定在一起。
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公开(公告)号：US07182162B2
公开(公告)日：2007-02-27
申请号：US10902222
申请日：2004-07-29
申请人： Christopher C. Beuershausen , Raul E. Lema , Ronald Hales , Don Q. Nguyen , Gregory L. Ricks , Chih C. Lin , Terry J. Koltermann , Mark E. Morris , Chris M. McCarty , Ronald L. Jones , James L. Overstreet , Rudolf Carl Otto Pessier
发明人： Christopher C. Beuershausen , Raul E. Lema , Ronald Hales , Don Q. Nguyen , Gregory L. Ricks , Chih C. Lin , Terry J. Koltermann , Mark E. Morris , Chris M. McCarty , Ronald L. Jones , James L. Overstreet , Rudolf Carl Otto Pessier
IPC分类号： E21B10/50
CPC分类号： E21B10/08
摘要： An earth-boring bit has a bit body that includes head sections, each having depending bit legs with a circumferentially extending outer surface, a leading side, and a trailing side. A bearing shaft depends inwardly from each of the bit legs for mounting a cutter. The bit includes a beveled surface formed at a junction of the leading side and the outer surface of each bit leg. The beveled surface is angled relative to a radial plane emenating from the axis of the bit. The angle of the beveled surface is at least 20 degrees, and extends to an inner surface of the bit leg. The bit can also have a layer of hardfacing on the leading, trailing and shirttail surfaces of the bit leg. A diversion finger of hardfacing extends circumferentially to direct cuttings.
摘要翻译： 钻头具有包括头部部分的头部部件，每个头部部分具有具有周向延伸的外表面，前导侧和后侧的依附的位腿。 轴承轴从每个钻头腿向内取向，用于安装切割器。 该钻头包括形成在每个钻头腿的前侧和外表面的接合处的斜面。 倾斜表面相对于从钻头的轴线发出的径向平面成角度。 斜面的角度至少为20度，并且延伸到钻头的内表面。 该位还可以在位腿的前导，尾部和衬衫表面上具有一层硬面。 硬面的转向手指周向延伸以直接切割。
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公开(公告)号：US06923276B2
公开(公告)日：2005-08-02
申请号：US10369000
申请日：2003-02-19
CPC分类号： E21B10/52
摘要： An earth-boring bit has a bit body, at least one cantilevered bearing shaft depending inwardly and downwardly from the bit body, and a cutter mounted for rotation on the bearing shaft. The cutter includes a plurality of teeth that are covered with a hardfacing layer. At least some of the teeth have a leading side that has a streamlined contour. The streamlined contour is generally conical in some of the embodiments. In others, the streamlined contour is defined by a corner between diverging inner and outer sections of the leading side.
摘要翻译： 钻头具有一个位体，至少一个从钻头体向内和向下悬伸的悬臂轴承轴，以及安装成用于在轴承轴上旋转的切割器。 切割器包括被表面堆积层覆盖的多个齿。 至少一些牙齿具有具有流线型轮廓的前方。 在一些实施例中，流线型轮廓通常是圆锥形的。 在其他方面，流线型的轮廓由前方的内部和外部分段之间的角度限定。
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公开(公告)号：US6142247A
公开(公告)日：2000-11-07
申请号：US683920
申请日：1996-07-19
IPC分类号： E21B10/18
CPC分类号： E21B10/18
摘要： An earth boring bit having a cone rotatably secured to a cantilevered bearing shaft and a nozzle that discharges a jet stream of fluid having a high velocity core and a lower velocity skirt. The high velocity core is fully contained in a space bounded by the backside of the cone, bit leg, borehole wall and a radial plane tangent to the tips of the heel teeth and intermittently strikes the exposed ends of the erosion and wear resistant teeth when the cone rotates the teeth on the trailing side in and out of the jet stream. Less than half of the fluid in the lower velocity skirt strikes the surface of the cone, while the remainder continues on a path toward the wall and the borehole bottom. The centerline of the high velocity core is aimed no lower than the corner of the borehole. The jet stream is confined on more than about 75 percent of its periphery by either the cone, bit leg or the wall of the borehole, reducing undesirable recirculation and turbulence and opening a large return flow area unobstructed by a high velocity jet stream.
摘要翻译： 具有可旋转地固定到悬臂轴承轴的圆锥体的钻孔钻头和排出具有高速芯和较低速度裙部的流体流的喷嘴。 高速铁心完全容纳在由锥体，钻头腿，钻孔壁的背面以及与跟部齿尖相切的径向平面的空间中，并间断地撞击冲蚀和耐磨齿的暴露端， 锥体将后缘上的齿旋转进入和离开喷射流。 较低速度裙部中少于一半的流体撞击锥体的表面，而其余部分在朝向壁和钻孔底部的路径上继续。 高速铁芯的中心线不低于钻孔的角落。 射流通过锥体，钻头腿或钻孔的壁限制在其周边的大约75％，减少了不期望的再循环和湍流，并且打开了由高速喷射流不被阻挡的大的返回流动区域。
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公开(公告)号：US06443246B1
公开(公告)日：2002-09-03
申请号：US09704847
申请日：2000-11-02
申请人： Rudolf Carl Otto Pessier , Brian Christopher Wiesner , George Edward Dolezal , Matthew Ray Isbell , James Lawrence Jacobsen , Brian Andrew Baker
发明人： Rudolf Carl Otto Pessier , Brian Christopher Wiesner , George Edward Dolezal , Matthew Ray Isbell , James Lawrence Jacobsen , Brian Andrew Baker
IPC分类号： E21B1016
CPC分类号： E21B10/16
摘要： An earth-boring bit for attachment to a drill string has rotatable cones with rows of cutting elements. The cutting elements are arranged in generally circumferential rows on each of the cones and interference fit into apertures in the shell surface. The rows include a heel row of cutting elements on the heel surface of each of the cones, and an adjacent row of adjacent row cutting elements next to the heel row cutting elements. Each heel row cutting element has at least one counterpart adjacent row cutting element that is spaced no farther from it than any other adjacent row cutting element, defining a proximal pair. Each of the cutting elements in each of the proximal pairs has a grip ratio, which is the barrel length divided by the diameter. Some of the proximal pairs having cutting elements with higher grip ratios than other cutting elements. None of the proximal pairs has both cutting elements with higher grip ratios.
摘要翻译： 用于附接到钻柱的钻孔可以具有切割元件行的可旋转锥体。 切割元件在每个锥形体上以大致圆周排布置，并且过盈配合到壳表面中的孔中。 这些行包括在每个锥体的跟部表面上的跟随行切割元件，以及邻近的后排行切割元件的相邻行切割元件的相邻行。 每个后跟行切割元件具有至少一个与行切割元件相邻的对应部分，其与任何其它相邻的行切割元件间隔开距离它不限于近侧对。 每个近端对中的每个切割元件具有握持比，其是筒长度除以直径。 近端对中的一些具有比其它切割元件更高的抓握比的切割元件。 近侧对中没有一个具有较高握持比的切割元件。
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