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21. 发明授权

US06848521B2 Cutting elements of gage row and first inner row of a drill bit 失效
标题翻译：量具行的切割元件和钻头的第一内排
公开(公告)号：US06848521B2
公开(公告)日：2005-02-01
申请号：US10658888
申请日：2003-09-10
申请人： Alan W. Lockstedt , Gary R. Portwood , Scott D. McDonough
发明人： Alan W. Lockstedt , Gary R. Portwood , Scott D. McDonough
IPC分类号： E21B10/16 , E21B10/52 , E21B10/56 , E21B10/567
CPC分类号： E21B10/5673 , E21B10/16 , E21B10/52
摘要： The present invention generally relates to positioning and/or orienting inserts on a gage row and/or a first inner row to optimize the duty among inserts on the gage row and/or insert row of cutting a sidewall and bottom hole of a bore hole such that wear and breakage of inserts are reduced and the life of the bit is enhanced.
摘要翻译：本发明总体上涉及将定位和/或定向在量具行和/或第一内排上的插入件，以优化在量规插入件之间的占空比和/或插入钻孔的侧壁和底孔的行，例如刀片的磨损和破损减少，钻头寿命增加。

22. 发明授权

US06241035B1 Superhard material enhanced inserts for earth-boring bits 有权
标题翻译：超硬材料增强了钻孔钻头
公开(公告)号：US06241035B1
公开(公告)日：2001-06-05
申请号：US09206902
申请日：1998-12-07
申请人： Gary R. Portwood
发明人： Gary R. Portwood
IPC分类号： E21B1016
CPC分类号： B23P15/28 , E21B10/52
摘要： Superhard material enhanced inserts and methods of making the same have been disclosed. The enhanced insert includes a body portion adapted for attachment to the earth-boring bit and a top portion for contacting an earthen formation to be drilled. The top portion includes a substrate and a layer of superhard material over a portion of the substrate other than in central region of the outer lateral face. For example, a layer of polycrystalline diamond is provided in the leading transition of the top portion, whereas the trailing transition and the central region of the outer lateral face of the top portion are substantially free of polycrystalline diamond.
摘要翻译：已经公开了超硬材料增强插入物及其制备方法。增强型插入件包括适于附接到钻地钻头的主体部分和用于接触要钻取的土地层的顶部部分。顶部部分包括衬底和除了在外侧面的中心区域之外的衬底的一部分上的超硬材料层。例如，在顶部的前导过渡部分设置一层多晶金刚石，而顶部的外侧面的尾部过渡部分和中心区域基本上不含多晶金刚石。

23. 发明授权

US06640913B2 Drill bit with canted gage insert 失效
标题翻译：钻头倾斜量具插入
公开(公告)号：US06640913B2
公开(公告)日：2003-11-04
申请号：US09107639
申请日：1998-06-30
申请人： Alan W. Lockstedt , Gary R. Portwood , Scott D. McDonough
发明人： Alan W. Lockstedt , Gary R. Portwood , Scott D. McDonough
IPC分类号： E21B1008
CPC分类号： E21B10/5673 , E21B10/16 , E21B10/52
摘要： A rolling cone drill bit is provided that has gage inserts on the first row from the bit axis to cut to full gage diameter that have a cutting portion enhanced with a layer of super abrasive material. The gage cutting surface has a center axis that is canted to be more normal to the gage curve such that its point of contact at gage is away from the thinner portion of the layer of super abrasive material.
摘要翻译：提供了一种滚动锥钻头，其具有从钻头轴线到第一排的量具插入件，以切割成全量规直径，其具有通过一层超级研磨材料增强的切割部分。计量切割表面具有倾斜的中心轴线，以使其与量规曲线更正交，使得其量规上的接触点远离超级研磨材料层的较薄部分。

24. 发明授权

US06561292B1 Rock bit with load stabilizing cutting structure 有权
标题翻译：岩石钻头采用负载稳定切割结构
公开(公告)号：US06561292B1
公开(公告)日：2003-05-13
申请号：US09705988
申请日：2000-11-03
申请人： Gary R. Portwood
发明人： Gary R. Portwood
IPC分类号： E21B1016
CPC分类号： E21B10/16
摘要： One aspect of the invention is a roller cone drill bit including a bit body having three legs depending therefrom, each leg having a journal, a roller cone rotatably mounted on each journal, and each roller cone having a plurality of cutting elements thereon. The cutting elements are arranged in rows on each cone. The rows include at least a gage row and a first row interior of the gage row. The first interior row is staggered with respect to the gage row on each of the three cones. Another aspect of the invention is a roller cone drill bit including a bit body having three legs depending therefrom. Each leg has a journal, a roller cone rotatably mounted on each journal, and each roller cone has a plurality of cutting elements thereon. The cutting elements are arranged in rows on each cone. The rows include at least a gage row and a first row interior of the gage row. The first interior row is staggered with respect to the gage row on at least two of the three cones. The cutting elements have an extension to diameter ratio of at least 0.829.
摘要翻译：本发明的一个方面是一种滚子锥钻头，其特征在于包括：一具有三根支脚的钻头体，每个支腿具有轴颈，一个可旋转地安装在每个轴颈上的滚子圆锥体，以及每个滚子锥体上具有多个切割元件。切割元件在每个锥体上排列成行。这些行包括量规行的至少一个计量行和第一行内部。第一个内部行相对于三个锥体中的每一个上的计量行交错。本发明的另一方面是一种滚子锥钻头，其包括具有从其延伸的三条腿的钻头体。每个腿具有轴颈，可旋转地安装在每个轴颈上的滚子锥体，并且每个滚子锥体上具有多个切割元件。切割元件在每个锥体上排列成行。这些行包括量规行的至少一个计量行和第一行内部。第一个内部行相对于三个锥体中的至少两个的计量行交错。切割元件的直径比至少为0.829。

25. 发明授权

US06290008B1 Inserts for earth-boring bits 有权
标题翻译：插入钻孔钻头
公开(公告)号：US06290008B1
公开(公告)日：2001-09-18
申请号：US09206827
申请日：1998-12-07
申请人： Gary R. Portwood , Michael A. Siracki
发明人： Gary R. Portwood , Michael A. Siracki
IPC分类号： E21B1000
CPC分类号： E21B10/5676 , E21B10/52
摘要： A polycrystalline diamond enhanced insert is disclosed. The insert includes a body portion adapted for attachment to an earth-boring bit and a top portion for contacting an earthen formation. The top portion of the insert is provided with two different compositions of polycrystalline diamond. In the primary surface of the top portion, a tougher or less wear-resistant polycrystalline diamond layer is provided, whereas a more wear-resistant polycrystalline diamond layer is provided in the remaining region of the top portion. In addition to polycrystalline diamond, polycrystalline boron nitride and other superhard materials also may be used.
摘要翻译：公开了一种多晶金刚石增强型插入件。插入件包括适于附接到钻地钻头的主体部分和用于接触土层的顶部部分。插入件的顶部设置有两种不同的多晶金刚石组合物。在顶部的主表面中，提供更坚韧或更少的耐磨多晶金刚石层，而在顶部的剩余区域中提供更耐磨的多晶金刚石层。除了多晶金刚石之外，还可以使用多晶氮化硼和其他超硬材料。

26. 发明授权

US5915486A Cutter element adapted to withstand tensile stress 失效
标题翻译：适用于承受拉伸应力的刀具元件
公开(公告)号：US5915486A
公开(公告)日：1999-06-29
申请号：US833366
申请日：1997-04-04
申请人： Gary R. Portwood , Scott D. McDonough , Dennis Cisneros
发明人： Gary R. Portwood , Scott D. McDonough , Dennis Cisneros
IPC分类号： E21B10/16 , E21B10/52 , E21B10/08
CPC分类号： E21B10/16 , E21B10/52
摘要： A cutter element having a substantially flat wear face and leading compression and trailing tension zones, wherein the leading compression zone is sharper than the trailing tension zone. Sharpness is defined as either a smaller inside angle at the intersection of a pair of planes or as a smaller radius of curvature. The cutter element of the present invention experiences reduced stress on its trailing portion in the direction of cutting movement and therefore is less subject to extreme impact damage and cyclic fatigue. The present invention can be applied with particular advantage to heel row cutters, but can also be applied to cutters in other rows that primarily ream the borehole wall and cooperatively cut the borehole corner. The present cutter element can be constructed so as to have either a positive or negative rake angle at its leading compression zone, or to have any of a variety of shapes, depending on the characteristics of the formation in which it is to be used.
摘要翻译：刀片元件具有基本平坦的磨损面和引导的压缩和牵引张力区域，其中前导压缩区域比拖拉区域更尖锐。清晰度被定义为在一对平面的交点处较小的内角或较小的曲率半径。本发明的切割元件在切割方向上的尾部受到较小的应力，因此受到极大的冲击损伤和循环疲劳的影响。本发明可以特别有利于后跟行切割机，但是也可以应用于其它行中的切割器，其主要是钻孔壁并协同切割钻孔角。本刀片元件可以被构造为在其前导压缩区域具有正或负前角，或者根据要使用的地层的特性，具有各种形状。

27. 发明授权

US5853055A Rock bit with an extended center jet 失效
标题翻译：岩石与一个扩展的中心喷气机
公开(公告)号：US5853055A
公开(公告)日：1998-12-29
申请号：US671517
申请日：1996-06-27
申请人： Michael A. Siracki , Per I. Nese , Alan W. Lockstedt , Dennis Cisneros , Michael S. Oliver , Gary R. Portwood
发明人： Michael A. Siracki , Per I. Nese , Alan W. Lockstedt , Dennis Cisneros , Michael S. Oliver , Gary R. Portwood
IPC分类号： E21B10/16 , E21B10/18
CPC分类号： E21B10/18 , E21B10/16
摘要： A rotary cone bit for drilling bore holes in earth formations whose body has a thread pin end and a dome end from which extend three legs. A cutter cone is rotatably mounted to each leg and is radially oriented about the bit's central axis. Each cutter cone has a gage row of cutting elements extending from the cone surface nearest the mouth and a nose row extending nearest the cone's apex. A center jet for emitting fluid or mud is located on the dome. The jet has a converging nozzle with an exit orifice which extends below a predefined horizontal plane intersected by the cones or cutting elements. The exit orifice has a constant diameter for a length at least equal to its diameter for reducing the diffusion of the fluid or mud flow emitted. Fluid or mud emitted from the center jet travels substantially uninterrupted within a cylindrical space between the cones which is not invaded by any cutting element. This reduced diffusion substantially uninterrupted fluid flow strikes the bore hole bottom with maximum impact energy for enhanced removal of earth formation cuttings.
摘要翻译：一个用于在地层中钻孔的旋转锥形钻头，其主体具有螺纹针端和从其延伸三条腿的圆顶端。切割锥体可旋转地安装到每个支腿上并且围绕钻头的中心轴线径向定向。每个切割锥体具有从最接近嘴部的锥形表面延伸的切割元件的行列，以及最靠近锥体顶点延伸的鼻列。用于喷射流体或泥浆的中心喷射器位于圆顶上。喷射器具有会聚喷嘴，其具有出口孔，该出口孔延伸到与锥体或切割元件相交的预定水平面下方。出口孔具有至少等于其直径的长度的恒定直径，用于减少发射的流体或泥浆流的扩散。从中心射流发射的流体或泥浆在不被任何切割元件侵入的锥体之间的圆柱形空间内基本上不间断地行进。这种减少的扩散基本上不间断的流体流动以最大的冲击能量撞击钻孔底部，以增强地球切屑的去除。

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