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公开(公告)号：US08157026B2
公开(公告)日：2012-04-17
申请号：US12487561
申请日：2009-06-18
申请人： Ajay V. Kulkarni
发明人： Ajay V. Kulkarni
IPC分类号： E21B10/00
CPC分类号： E21B10/14
摘要： An earth boring drill bit comprising a bit body having a bit profile including nose, shoulder, and gage sections; a plurality of fixed cutting elements secured to the body and defining a fixed cutter profile; and a roller cone rotatably secured to the body, the roller cone having a plurality of roller cone cutting elements defining a roller cutter profile, wherein the fixed cutter profile extends beyond the roller cutter profile in at least one of the sections and the roller cutter profile extends beyond the fixed cutter profile in at least one of the sections. The roller cutter profile may extend beyond the fixed cutter profile in the shoulder and gage sections, possibly with the fixed cutter profile extending beyond the roller cutter profile in the nose section and/or a cone section.
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公开(公告)号：US20110147089A1
公开(公告)日：2011-06-23
申请号：US13038993
申请日：2011-03-02
摘要： A drill bit is provided that in one embodiment includes a force application device on a body of a drill bit, the force application device including a floating member and a force application member configured to extend from the floating member to apply a force on a wellbore wall when the drill bit is used to drill a wellbore. The drill bit further includes an actuator configured to actuate the force application member to apply the force to a wellbore wall during drilling of the wellbore
摘要翻译： 提供了一种钻头，其在一个实施例中包括在钻头的主体上的施力装置，所述施力装置包括浮动构件和施力构件，其构造成从浮动构件延伸以向井壁施加力 当钻头用于钻井井。 所述钻头还包括致动器，所述致动器构造成致动所述施力部件以在钻井期间向井眼壁施加力
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公开(公告)号：US20110031025A1
公开(公告)日：2011-02-10
申请号：US12535326
申请日：2009-08-04
摘要： A drill bit is provided that in one embodiment may include a force application device on a drill bit body, wherein the force application device includes a force application member pivotally coupled to the drill bit and configured to extend from the drill bit body to apply force on a wellbore wall when the drill bit is used to drill a wellbore, and an actuator configured to actuate the force application member to apply force on a wellbore wall during drilling of the wellbore.
摘要翻译： 提供了一种钻头，其在一个实施例中可以包括在钻头体上的力施加装置，其中所述施力装置包括枢转地联接到所述钻头并且构造成从所述钻头体延伸以施加力的力施加构件 当钻头用于钻井孔时的井眼壁;以及致动器，其构造成在钻井期间致动力施加构件以在井眼壁上施加力。
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公开(公告)号：US07823664B2
公开(公告)日：2010-11-02
申请号：US12191915
申请日：2008-08-14
申请人： Alan J. Massey , David K. Luce , Eric Sullivan , John F. Bradford, III , Carmel Z. El Hakam , James L. Overstreet , Ajay V. Kulkarni
发明人： Alan J. Massey , David K. Luce , Eric Sullivan , John F. Bradford, III , Carmel Z. El Hakam , James L. Overstreet , Ajay V. Kulkarni
IPC分类号： E21B10/46
CPC分类号： E21B10/46 , C23C30/005 , E21B10/08
摘要： An earth boring bit has a steel body having at least one leg with a depending bearing pin. A cone having cutting elements is rotatably mounted to the bearing pin. A ball plug weld is on the outer surface of the leg. A layer of hardfacing applied to part of the outer surface of the leg, the hardfacing having carbide particles in a matrix. A corrosion resistant coating containing at least 50% nickel is formed on parts of the outer surface of the leg that are free of the layer of hardfacing both above and below the ball plug weld.
摘要翻译： 地镗头具有至少一个具有从动轴承销的支脚的钢体。 具有切割元件的锥体可旋转地安装在轴承销上。 球塞的外表面上有一个球塞。 一层表面硬化施加到腿的外表面的一部分，表面硬化具有碳化物颗粒在基质中。 在腿部外表面的没有球塞焊缝上方和下方的耐磨层层的部分上形成含有至少50％镍的耐腐蚀涂层。
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公开(公告)号：US08240399B2
公开(公告)日：2012-08-14
申请号：US13038993
申请日：2011-03-02
摘要： A drill bit is provided that includes a force application device on a body of the drill bit. The force application device includes a floating member and a force application member configured to extend from the floating member to apply a force on a wellbore wall when the drill bit is used to drill a wellbore and an actuator configured to actuate the force application member to apply the force to a wellbore wall during drilling of the wellbore.
摘要翻译： 提供了一种钻头，其包括在钻头的主体上的施力装置。 施力装置包括浮动构件和施力构件，其构造成从浮动构件延伸以在钻头用于钻井井和致动构造成致动力施加构件以施加的致动器时将力施加在井眼壁上 在井眼钻井期间对井筒壁的力。
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公开(公告)号：US08087479B2
公开(公告)日：2012-01-03
申请号：US12535326
申请日：2009-08-04
摘要： A drill bit is provided that includes a force application device on a body of the drill bit. The force application device includes a force application member pivotally coupled to the drill bit and configured to extend from the drill bit body to apply force on a wellbore wall when the drill bit is used to drill a wellbore, and an actuator configured to actuate the force application member to apply force on a wellbore wall during drilling of the wellbore.
摘要翻译： 提供了一种钻头，其包括在钻头的主体上的施力装置。 力施加装置包括一个力施加构件，其可枢转地联接到钻头并且构造成当钻头用于钻井井时从钻头体延伸到施加在井筒壁上的力;以及致动器，其构造成致动力 应用构件在钻井期间在井筒壁上施加力。
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公开(公告)号：US08336646B2
公开(公告)日：2012-12-25
申请号：US13206154
申请日：2011-08-09
申请人： Ajay V. Kulkarni
发明人： Ajay V. Kulkarni
IPC分类号： E21B10/00
CPC分类号： E21B10/14
摘要： An earth boring drill bit comprising a bit body having a bit profile including nose, shoulder, and gage sections; a plurality of fixed cutting elements secured to the body and defining a fixed cutter profile; and a roller cone rotatably secured to the body, the roller cone having a plurality of roller cone cutting elements defining a roller cutter profile, wherein the fixed cutter profile extends beyond the roller cutter profile in at least one of the sections and the roller cutter profile extends beyond the fixed cutter profile in at least one of the sections. The roller cutter profile may extend beyond the fixed cutter profile in the shoulder and gage sections, possibly with the fixed cutter profile extending beyond the roller cutter profile in the nose section and/or a cone section.
摘要翻译： 一种钻孔钻头，包括具有包括鼻子，肩部和计量部分的位轮廓的钻头体; 多个固定切割元件，其固定到所述主体并限定固定的切割轮廓; 以及可旋转地固定到所述主体的滚子锥体，所述滚子锥体具有限定滚轮切割器轮廓的多个滚子锥形切割元件，其中所述固定切割器轮廓在所述部分中的至少一个部分和所述滚子切割器轮廓 在至少一个部分中延伸超过固定切割器轮廓。 辊切割器轮廓可以延伸超过肩部和计量部分中的固定切割器轮廓，可能的是固定切割器轮廓延伸超过鼻部部分中的辊切割器轮廓和/或锥形部分。
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公开(公告)号：US20110290565A1
公开(公告)日：2011-12-01
申请号：US13206154
申请日：2011-08-09
申请人： Ajay V. KULKARNI
发明人： Ajay V. KULKARNI
CPC分类号： E21B10/14
摘要： An earth boring drill bit comprising a bit body having a bit profile including nose, shoulder, and gage sections; a plurality of fixed cutting elements secured to the body and defining a fixed cutter profile; and a roller cone rotatably secured to the body, the roller cone having a plurality of roller cone cutting elements defining a roller cutter profile, wherein the fixed cutter profile extends beyond the roller cutter profile in at least one of the sections and the roller cutter profile extends beyond the fixed cutter profile in at least one of the sections. The roller cutter profile may extend beyond the fixed cutter profile in the shoulder and gage sections, possibly with the fixed cutter profile extending beyond the roller cutter profile in the nose section and/or a cone section.
摘要翻译： 一种钻孔钻头，包括具有包括鼻子，肩部和计量部分的位轮廓的钻头体; 多个固定切割元件，其固定到所述主体并限定固定的切割轮廓; 以及可旋转地固定到所述主体的滚子锥体，所述滚子锥体具有限定滚轮切割器轮廓的多个滚子锥形切割元件，其中所述固定切割器轮廓在所述部分中的至少一个部分和所述滚子切割器轮廓 在至少一个部分中延伸超过固定切割器轮廓。 辊切割器轮廓可以延伸超过肩部和计量部分中的固定切割器轮廓，可能的是固定切割器轮廓延伸超过鼻部部分中的辊切割器轮廓和/或锥形部分。
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公开(公告)号：US20110079444A1
公开(公告)日：2011-04-07
申请号：US12883900
申请日：2010-09-16
申请人： Ajay V. Kulkarni
发明人： Ajay V. Kulkarni
摘要： A hybrid-type earth boring drill bit is described having fixed cutting blades and rolling cones with cutting elements, wherein the rolling cones are associated with a spindle assembly that may be optionally divorced from the head pin assembly, and which includes bearing members that further include a plurality of polycrystalline diamond elements.
摘要翻译： 描述了具有固定切割刀片和具有切割元件的滚动锥体的混合型钻孔钻头，其中滚动锥体与可以可选地脱离头部销组件的主轴组件相关联，并且其包括进一步包括的轴承部件 多个多晶金刚石元件。
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公开(公告)号：US20100320001A1
公开(公告)日：2010-12-23
申请号：US12487561
申请日：2009-06-18
申请人： Ajay V. Kulkarni
发明人： Ajay V. Kulkarni
CPC分类号： E21B10/14
摘要： An earth boring drill bit comprising a bit body having a bit profile including nose, shoulder, and gage sections; a plurality of fixed cutting elements secured to the body and defining a fixed cutter profile; and a roller cone rotatably secured to the body, the roller cone having a plurality of roller cone cutting elements defining a roller cutter profile, wherein the fixed cutter profile extends beyond the roller cutter profile in at least one of the sections and the roller cutter profile extends beyond the fixed cutter profile in at least one of the sections. The roller cutter profile may extend beyond the fixed cutter profile in the shoulder and gage sections, possibly with the fixed cutter profile extending beyond the roller cutter profile in the nose section and/or a cone section.
摘要翻译： 一种钻孔钻头，包括具有包括鼻子，肩部和计量部分的位轮廓的钻头体; 多个固定切割元件，其固定到所述主体并限定固定的切割轮廓; 以及可旋转地固定到所述主体的滚子锥体，所述滚子锥体具有限定滚轮切割器轮廓的多个滚子锥形切割元件，其中所述固定切割器轮廓在所述部分中的至少一个部分和所述滚子切割器轮廓 在至少一个部分中延伸超过固定切割器轮廓。 辊切割器轮廓可以延伸超过肩部和计量部分中的固定切割器轮廓，可能的是固定切割器轮廓延伸超过鼻部部分中的辊切割器轮廓和/或锥形部分。
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