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1.发明授权公开(公告)号：US08316968B2
公开(公告)日：2012-11-27
申请号：US12771346
申请日：2010-04-30
申请人： Giampaolo Ferrari , Gary Portwood , Carl A. Deen
发明人： Giampaolo Ferrari , Gary Portwood , Carl A. Deen
IPC分类号： E21B10/16
CPC分类号： E21B10/52
摘要： A rolling cone drill bit comprises a bit body and a plurality of rolling cone cutters mounted on the bit body. Each cone cutter includes a plurality of gage cutting elements. Each gage cutting element has a cutting portion extending from a base portion to an extension height. Further, each gage cutting element contacts a gage curve at a gage curve contact point in a composite rotated profile view. Each gage cutting element has a cross-sectional area A1 in a first offset reference plane parallel to a base reference plane and offset from the base reference plane by an offset distance d1 equal to 10% of the extension height. The ratio of A1 to a cross-sectional area Ab of the base portion of each gage cutting element is less than 11%.
摘要翻译： 滚动钻头包括钻头体和安装在钻头体上的多个滚动锥形铣刀。 每个锥形切割器包括多个量具切割元件。 每个量具切割元件具有从基部延伸到延伸高度的切割部分。 此外，每个量规切割元件在复合旋转轮廓视图中的量规曲线接触点处接触量规曲线。 每个量具切割元件在平行于基准参考平面的第一偏移参考平面中具有横截面积A1，并且偏离基准基准平面等于延伸高度的10％的偏移距离d1。 每个量具切割元件的基部的A1与横截面积Ab之比小于11％。
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2.发明申请公开(公告)号：US20100276207A1
公开(公告)日：2010-11-04
申请号：US12771346
申请日：2010-04-30
申请人： Giampaolo Ferrari , Gary Portwood , Carl A. Deen
发明人： Giampaolo Ferrari , Gary Portwood , Carl A. Deen
IPC分类号： E21B10/08
CPC分类号： E21B10/52
摘要： A rolling cone drill bit comprises a bit body and a plurality of rolling cone cutters mounted on the bit body. Each cone cutter includes a plurality of gage cutting elements. Each gage cutting element has a cutting portion extending from a base portion to an extension height. Further, each gage cutting element contacts a gage curve at a gage curve contact point in a composite rotated profile view. Each gage cutting element has a cross-sectional area A1 in a first offset reference plane parallel to a base reference plane and offset from the base reference plane by an offset distance d1 equal to 10% of the extension height. The ratio of A1 to a cross-sectional area Ab of the base portion of each gage cutting element is less than 11%.
摘要翻译： 滚动钻头包括钻头体和安装在钻头体上的多个滚动锥形铣刀。 每个锥形切割器包括多个量具切割元件。 每个量具切割元件具有从基部延伸到延伸高度的切割部分。 此外，每个量规切割元件在复合旋转轮廓视图中的量规曲线接触点处接触量规曲线。 每个量具切割元件在平行于基准参考平面的第一偏移参考平面中具有横截面积A1，并且偏离基准基准平面等于延伸高度的10％的偏移距离d1。 每个量具切割元件的基部的A1与横截面积Ab之比小于11％。
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公开(公告)号：US09074431B2
公开(公告)日：2015-07-07
申请号：US12351188
申请日：2009-01-09
申请人： Gary Portwood , Luca Tedeschi , Giampaolo Ferrari , Josh Gatell , John Clunan , Allen D. White
发明人： Gary Portwood , Luca Tedeschi , Giampaolo Ferrari , Josh Gatell , John Clunan , Allen D. White
IPC分类号： E21B10/16
CPC分类号： E21B10/16
摘要： A rolling cone drill bit for drilling in earthen formations having a plurality of rolling cone cutters. Each cone cutter includes a plurality of gage cutting elements, a first plurality of bottomhole cutting elements, and a second plurality of bottomhole cutter elements. Each of the first plurality of bottomhole cutting elements is staggered relative to the gage cutting elements on each cone cutter. Each of the second plurality of bottomhole cutting elements is staggered relative to the first plurality of bottomhole cutting elements on at least one cone cutter.
摘要翻译： 一种用于在具有多个滚动锥形切割机的土地层中钻孔的滚动钻头钻头。 每个锥形切割器包括多个量具切割元件，第一多个井底切割元件和第二多个井底切割元件。 第一多个井底切割元件中的每一个相对于每个锥形切割器上的计量切割元件交错。 第二多个井底切割元件中的每一个相对于至少一个锥形切割器上的第一多个井底切割元件交错。
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公开(公告)号：US20090188724A1
公开(公告)日：2009-07-30
申请号：US12351188
申请日：2009-01-09
申请人： Gary Portwood , Luca Tedeschi , Giampaolo Ferrari , Josh Gatell , John Clunan , Allen D. White
发明人： Gary Portwood , Luca Tedeschi , Giampaolo Ferrari , Josh Gatell , John Clunan , Allen D. White
CPC分类号： E21B10/16
摘要： A rolling cone drill bit for drilling in earthen formations. In an embodiment, the drill bit comprises a plurality of rolling cone cutters. Each cone cutter includes a plurality of gage cutting elements, a first plurality of bottomhole cutting elements, and a second plurality of bottomhole cutter elements. Each of the first plurality of bottomhole cutting elements is staggered relative to the gage cutting elements on each cone cutter, and the profiles of the gage cutting elements and the first plurality of bottomhole cutting elements on each cone cutter overlap in rotated profile view. Each of the second plurality of bottomhole cutting elements is staggered relative to the first plurality of bottomhole cutting elements on at least one cone cutter, and the profiles of the first plurality of bottomhole cutting elements and the second plurality of bottomhole cutting elements on at least one cone cutter overlap in rotated profile view.
摘要翻译： 一种用于在土层中钻孔的滚动钻头。 在一个实施例中，钻头包括多个滚动锥形切割器。 每个锥形切割器包括多个量具切割元件，第一多个井底切割元件和第二多个井底切割元件。 第一多个井底切割元件中的每一个相对于每个锥形切割器上的计量切割元件交错，并且每个锥形切割器上的量规切割元件的轮廓和第一多个井底切割元件在旋转轮廓视图中重叠。 第二多个井底切割元件中的每一个相对于至少一个锥形切割器上的第一多个井底切割元件交错，并且第一多个井底切割元件和第二多个井底切割元件的轮廓在至少一个 锥形切割器在旋转轮廓视图中重叠。
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公开(公告)号：US20090159340A1
公开(公告)日：2009-06-25
申请号：US12104856
申请日：2008-04-17
申请人： Luca Tedeschi , James L. Larsen , Gary Portwood
发明人： Luca Tedeschi , James L. Larsen , Gary Portwood
CPC分类号： E21B10/18
摘要： A drill bit for drilling through an earthen formation to form a borehole. In an embodiment, the drill bit comprises a bit body having a central axis, an internal plenum, and an underside. The underside includes an annular outer region. The bit body includes an outer receptacle extending from the plenum to the outer region. In addition, the drill bit comprises a first and a second cone cutter. Each cone cutter comprises an outer region distal the bit axis. Further the drill bit comprises an outer sleeve having an upstream end received by the outer sleeve receptacle and a through passage. The through passage includes an upstream section having an upstream axis and a downstream section having a downstream axis that is skewed at an angle α relative to the upstream axis. A projection of the downstream axis passes between the outer regions of the first and second cone cutters.
摘要翻译： 钻头通过土层钻孔以形成钻孔。 在一个实施例中，钻头包括具有中心轴线，内部增压室和下侧的钻头体。 下侧包括环形外部区域。 钻头体包括从集气室延伸到外部区域的外部容器。 此外，钻头包括第一和第二锥形切割器。 每个锥形切割器包括远离钻头轴线的外部区域。 此外，钻头包括外套筒，其具有由外套筒容座和通孔通过的上游端。 贯穿通道包括具有上游轴线的上游部分和具有相对于上游轴线以一定角度α倾斜的下游轴线的下游部分。 下游轴的突出部通过第一和第二锥形切割器的外部区域之间。
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公开(公告)号：US20090095536A1
公开(公告)日：2009-04-16
申请号：US12179989
申请日：2008-07-25
IPC分类号： E21B10/18
CPC分类号： E21B10/18
摘要： A drill bit for drilling through an earthen formation to form a borehole with a radius R. In an embodiment, the drill bit comprises a bit body having a central bit axis and including a pin end, an internal plenum, and a dome side. The dome side includes a central dome region extending from the bit axis to about 10% of the radius R and an intermediate dome region extending from the central region to about 50% of the radius R. In addition, the drill bit comprises an intermediate receptacle having a central axis and extending through the intermediate dome region. Further, the drill bit comprises a first and a second rolling cone, each including an intermediate cone region. A projection of the central axis of the intermediate receptacle passes between the intermediate regions of the first cone and the second cone.
摘要翻译： 钻头，用于通过土层钻孔以形成具有半径R的钻孔。在一个实施例中，钻头包括具有中心钻头轴线并包括销端，内部增压室和圆顶侧的钻头体。 圆顶侧包括从钻头轴线延伸到半径R的约10％的中心圆顶区域和从中心区域延伸到半径R的约50％的中间圆顶区域。另外，钻头头包括中间容器 具有中心轴线并延伸穿过中间圆顶区域。 此外，钻头包括第一和第二滚动锥体，每个包括中间锥体区域。 中间容器的中心轴线的突出部通过第一锥体和第二锥体的中间区域之间。
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公开(公告)号：US06655478B2
公开(公告)日：2003-12-02
申请号：US10017404
申请日：2001-12-14
申请人： Dah-Ben Liang , Gary Portwood , Paul E. Cox , John L. Williams
发明人： Dah-Ben Liang , Gary Portwood , Paul E. Cox , John L. Williams
IPC分类号： E21B1036
CPC分类号： E21B17/1092 , C22C29/08 , E21B10/08 , E21B10/52
摘要： A fracture and wear resistant rock bit is disclosed, which includes a bit body, and at least one roller cone disposed on the bit body adapted such that at least one row of cutting elements disposed on the at least one roller cone defines a gage row. At least one cutting element disposed on the gage row has a fracture toughness of at least 20 ksi (in)0.5 and a wear number of at least 1.5.
摘要翻译： 公开了一种断裂和耐磨岩石钻头，其包括钻头体，以及设置在钻头体上的至少一个滚子锥体，其适于使得至少一排切割元件设置在所述至少一个滚子锥体上，限定出规定的行。 至少一个设置在计量排上的切割元件具有至少20ksi（in）<0.5>的断裂韧性和至少1.5的磨损值。
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公开(公告)号：US07690442B2
公开(公告)日：2010-04-06
申请号：US11383584
申请日：2006-05-16
申请人： Gary Portwood , Peter Wilson , Luca Tedeschi , Bryce Baker , Daniel W. Brietzke
发明人： Gary Portwood , Peter Wilson , Luca Tedeschi , Bryce Baker , Daniel W. Brietzke
IPC分类号： E21B10/16
摘要： A rolling cone drill bit comprises a plurality of bottomhole cutter elements positioned in a first circumferential row, wherein at least one of the cutter elements comprises a cutting portion extending from a base portion to a point furthermost from the base portion, defining an extension height. The ratio of the cross-sectional area of the cutter element at a point equal to ninety-four percent of the extension height to the cross-sectional area of the cutter element base is greater than 0.2. Moreover, the ratio of the extension height to the base diameter is not greater than 0.75.
摘要翻译： 滚动锥钻头包括定位在第一周向排中的多个井底切割元件，其中至少一个切割元件包括从基部延伸到距离基部最远的点的切割部分，限定延伸高度。 切割元件的截面积等于延伸高度的94％与切割元件基底的横截面面积的比率大于0.2。 此外，延伸高度与基础直径的比率不大于0.75。
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公开(公告)号：US5421424A
公开(公告)日：1995-06-06
申请号：US257592
申请日：1994-06-09
摘要： A chisel type insert is disclosed having a contoured surface in which the vertical lines located on the surface are bowed outwardly in a convex manner thereby eliminating blend radii from the cutting tip and the high stress concentrations associated therewith.
摘要翻译： 公开了一种凿型插入件，其具有轮廓表面，其中位于表面上的垂直线以凸形的方式向外弯曲，从而消除了来自切割尖端的混合半径以及与其相关联的高应力集中。
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公开(公告)号：US5394952A
公开(公告)日：1995-03-07
申请号：US111356
申请日：1993-08-24
摘要： A roller cone drill bit is disclosed that leaves uncut a substantial formation core having a diameter from 10% to 25% of the bit gage diameter. The bit is designed to have normal size bearings, cone shell thickness and cutter protrusion to allow the use of standard drilling weights and RPM, thereby achieving a significant increase in drilling rate. When drilling abrasive formations, ultra hard cutting teeth are used in the cone apex to maintain the core diameter.
摘要翻译： 公开了一种滚子锥钻头，其不切割直径为钻头直径的10％至25％的实质地层岩心。 该钻头被设计成具有正常尺寸的轴承，锥形壳体厚度和切割器突起，以允许使用标准钻孔重量和RPM，从而实现钻井速率的显着增加。 当钻研磨结构时，在锥形顶端使用超硬切削齿以保持芯直径。
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