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1. 发明授权

US6059054A Non-symmetrical stress-resistant rotary drill bit cutter element 失效
标题翻译：非对称耐应力旋转钻头刀具元件
公开(公告)号：US6059054A
公开(公告)日：2000-05-09
申请号：US879872
申请日：1997-06-20
申请人： Gary Ray Portwood , Gary Edward Garcia , James Carl Minikus , Per Ivar Nese , Chris Edward Cawthorne , Scott D. McDonough
发明人： Gary Ray Portwood , Gary Edward Garcia , James Carl Minikus , Per Ivar Nese , Chris Edward Cawthorne , Scott D. McDonough
IPC分类号： E21B10/16 , E21B10/52 , E21B10/56 , E21B10/567 , E21B10/08
CPC分类号： E21B10/5673 , E21B10/16 , E21B10/52
摘要： A cutter element that balances maximum gage-keeping capabilities with minimal tensile stress induced damage to the cutter elements is disclosed. The cutter elements of the present invention have a non-symmetrical shape and may include a more aggressive cutting profile than conventional cutter elements. In one embodiment, a cutter element is configured such that the inside angle at which its leading face intersects the wear face is less than the inside angle at which its trailing face intersects the wear face. This can also be accomplished by providing the cutter element with a relieved wear face. In another embodiment of the invention, the surfaces of the present cutter element are curvilinear and the transitions between the leading and trailing faces and the gage face are rounded, or contoured. In this embodiment, the leading transition is made sharper than the trailing transition by configuring it such that the leading transition has a smaller radius of curvature than the radius of curvature of the trailing transition. In another embodiment, the cutter element has a chamfered trailing edge such that the leading transition of the cutter element is sharper than its trailing transition. In another embodiment, the cutter element has a chamfered or contoured trailing edge in combination with a canted wear face. In still another embodiment, the cutter element includes a positive rake angle on its leading edge.
摘要翻译：公开了一种用于平衡最大保持能力和对刀具元件的最小拉伸应力引起的损伤的切割元件。本发明的切割元件具有非对称的形状，并且可以包括比常规切割元件更具侵蚀性的切割轮廓。在一个实施例中，切割器元件构造成使得其前表面与磨损面相交的内角小于其后表面与磨损面相交的内角。这也可以通过提供切割器元件具有缓解的磨损面来实现。在本发明的另一个实施例中，本刀片元件的表面是曲线形的，并且前表面和后表面之间的过渡是圆形或轮廓。在该实施例中，通过对其进行配置，引导转变比尾随转换更尖锐，使得前导转换的曲率半径比后跟转换的曲率半径小。在另一个实施例中，切割器元件具有倒角后缘，使得切割器元件的前导过渡比其拖尾过渡更尖锐。在另一个实施例中，切割器元件具有与斜面磨损面组合的倒角或轮廓后缘。在另一个实施例中，切割器元件在其前缘上包括正的前角。

2. 发明授权

US08991523B2 Rolling cutter assembled directly to the bit pockets 有权
标题翻译：滚动刀具直接组装到钻头口袋
公开(公告)号：US08991523B2
公开(公告)日：2015-03-31
申请号：US13152626
申请日：2011-06-03
申请人： Yuelin Shen , Youhe Zhang , Yuri Burhan , Michael A. Siracki , Mahavir Nagaraj , Bala Durairajan , Scott D. McDonough , Peter Thomas Cariveau
发明人： Yuelin Shen , Youhe Zhang , Yuri Burhan , Michael A. Siracki , Mahavir Nagaraj , Bala Durairajan , Scott D. McDonough , Peter Thomas Cariveau
IPC分类号： E21B10/08 , E21B10/633 , B23P15/28
CPC分类号： E21B10/633 , B23P15/28
摘要： A drill bit includes a bit body, a plurality of blades extending radially from the bit body, a plurality of cutter pockets disposed on the plurality of blades, at least one rolling cutter disposed in one of the cutter pockets, wherein each rolling cutter has a substrate, a cutting face, a cutting edge, and a side surface, and at least one blocker positioned adjacent to each of the at least one rolling cutters on a leading face of the blade, wherein each blocker has a retention end and an attachment end. The retention end of each blocker is positioned adjacent to a portion of the cutting face of each rolling cutter to retain the rolling cutter in the cutter pocket and the attachment end is attached to a portion of the blade.
摘要翻译：钻头包括钻头体，从钻头体径向延伸的多个刀片，设置在多个刀片上的多个切割器凹槽，设置在其中一个切割器凹穴中的至少一个滚刀，其中每个滚切刀具有基板，切割面，切割边缘和侧表面;以及至少一个阻挡件，其邻近于所述刀片的前表面上的所述至少一个滚动切割器中的每一个定位，其中每个阻挡件具有保持端和附接端。每个阻塞器的保持端定位成与每个滚动切割器的切割面的一部分相邻，以将滚动切割器保持在切割器凹槽中，并且附接端附接到叶片的一部分。

3. 发明申请

US20090065261A1 CUTTING ELEMENTS OF GAGE ROW AND FIRST INNER ROW OF A DRILL BIT 有权
标题翻译：切割元件的GAGE ROW和钻头的第一内部
公开(公告)号：US20090065261A1
公开(公告)日：2009-03-12
申请号：US12116119
申请日：2008-05-06
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
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 gave 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，以使其与给定曲线更正交，使得其量具上的接触点远离超级研磨材料层的较薄部分。

4. 发明授权

US07401668B2 Single cone rock bit having inserts adapted to maintain hole gage during drilling 失效
标题翻译：单锥岩石钻头具有适于在钻孔期间保持孔规的插入件
公开(公告)号：US07401668B2
公开(公告)日：2008-07-22
申请号：US11501472
申请日：2006-08-09
申请人： George Bodo Witman , Peter Wilson , Scott D. McDonough , Michael A. Siracki
发明人： George Bodo Witman , Peter Wilson , Scott D. McDonough , Michael A. Siracki
IPC分类号： E21B10/16
CPC分类号： E21B10/52 , E21B10/08 , E21B17/1092
摘要： A roller cone drill bit is disclosed which includes a bit body adapted to be coupled to a drill string. A bearing journal depends from the bit body. A single roller cone is rotatably attached to the bearing journal. The roller cone has a plurality of inserts disposed at selected positions about the cone. The journal defines a rotation angle with respect to an axis of rotation of the bit such that the roller cone includes a wall contact zone and a bottom contact zone. At least one of the inserts disposed in the wall contact zone has an extension portion terminating in a substantially planar upper surface.
摘要翻译：公开了一种滚子锥钻头，其包括适于联接到钻柱的钻头体。轴承日志取决于位体。单个滚子锥体可旋转地附接到轴承轴颈。辊锥体具有多个插入件，其设置在围绕锥体的选定位置处。轴颈限定相对于钻头的旋转轴线的旋转角度，使得滚子锥体包括壁接触区域和底部接触区域。布置在壁接触区域中的插入件中的至少一个具有终止于基本平坦的上表面的延伸部分。

5. 发明申请

US20080164069A1 Drill Bit and Cutter Element Having Chisel Crest With Protruding Pilot Portion 有权
标题翻译：钻头和刀具元件具有凿子突起与突出的引导部分
公开(公告)号：US20080164069A1
公开(公告)日：2008-07-10
申请号：US11619395
申请日：2007-01-03
申请人： Scott D. McDonough , Amardeep Singh
发明人： Scott D. McDonough , Amardeep Singh
IPC分类号： E21B10/26
CPC分类号： E21B10/16 , E21B10/52
摘要： A rolling cone drill bit includes a cutter element having a cutting portion with a chisel crest and a pilot portion extending beyond the chisel crest. The pilot portion includes a cutting surface that may be generally conical, or form a second chisel crest. The cutting tip of the pilot portion is supported by buttress portions which emerge from and extend beyond the flanks of the chisel crest to provide additional strength and support for the material of the pilot portion that extends beyond the height of the chisel crest.
摘要翻译：滚动圆锥钻头包括具有切割部分的切割器元件，切割部分具有凿子顶部和延伸超过凿顶部的引导部分。导向部分包括可以是大致圆锥形的切割表面，或形成第二凿顶。导向部分的切割尖端由从凿顶部的侧面露出并延伸超过凿顶部的侧面的支撑部分支撑，以提供延伸超过凿顶高度的先导部分的材料的附加强度和支撑。

6. 发明授权

US07367413B2 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：US07367413B2
公开(公告)日：2008-05-06
申请号：US11494992
申请日：2006-07-28
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： E21B10/36
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。

7. 发明授权

US07743857B2 Cutting elements of gage row and first inner row of a drill bit 有权
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：US07743857B2
公开(公告)日：2010-06-29
申请号：US12116119
申请日：2008-05-06
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
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 gave 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，以使其与给定曲线更正交，使得其量具上的接触点远离超级研磨材料层的较薄部分。

8. 发明授权

US07100711B2 Single cone rock bit having inserts adapted to maintain hole gage during drilling 有权
公开(公告)号：US07100711B2
公开(公告)日：2006-09-05
申请号：US10407922
申请日：2003-04-04
申请人： George B. Witman , Peter Wilson , Scott D. McDonough , Michael A. Siracki
发明人： George B. Witman , Peter Wilson , Scott D. McDonough , Michael A. Siracki
IPC分类号： E21B10/16
CPC分类号： E21B10/52 , E21B10/08 , E21B17/1092
摘要： A roller cone drill bit is disclosed which includes a bit body adapted to be coupled to a drill string. A bearing journal depends from the bit body. A single roller cone is rotatably attached to the bearing journal. The roller cone has a plurality of inserts disposed at selected positions about the cone. The journal defines a rotation angle with respect to an axis of rotation of the bit such that the roller cone includes a wall contact zone and a bottom contact zone. At least one of the inserts disposed in the wall contact zone has an extension portion terminating in a substantially planar upper surface.

9. 发明授权

US06988569B2 Cutting element orientation or geometry for improved drill bits 失效
标题翻译：用于改进钻头的切削元件方向或几何形状
公开(公告)号：US06988569B2
公开(公告)日：2006-01-24
申请号：US11032320
申请日：2005-01-10
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： E21B10/08
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 the 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。量规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。

10. 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。

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