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    Rock Bit and Inserts With a Chisel Crest Having a Broadened Region
    3.
    发明申请
    Rock Bit and Inserts With a Chisel Crest Having a Broadened Region 有权
    岩石钻头和插入与凿子有扩大的地区

    公开(公告)号：US20080156543A1

    公开(公告)日：2008-07-03

    申请号：US11858359

    申请日：2007-09-20

    申请人： Scott D. McDonough ,  Brandon M. Moss ,  James C. Minikus

    发明人： Scott D. McDonough ,  Brandon M. Moss ,  James C. Minikus

    IPC分类号： E21B10/16 ,  E21B10/08

    CPC分类号： E21B10/50 ,  E21B10/16 ,  E21B10/52

    摘要： A drill bit for cutting a borehole comprises a bit body. In addition, the drill bit comprises a rolling cone cutter mounted on the bit body and adapted for rotation about a cone axis. Further, the drill bit comprises at least one insert having a base portion secured in the rolling cone cutter and a cutting portion extending therefrom. The cutting portion includes a pair of flanking surfaces that taper towards one another to form an elongate chisel crest including a first crest end, a second crest end, and an apex positioned therebetween. A transverse radius of curvature at the first crest end is less than a transverse radius of curvature at the apex, and a transverse radius of curvature at the second crest end is less than the transverse radius of curvature at the apex.

    摘要翻译： 用于切割钻孔的钻头包括钻头体。 此外，钻头包括安装在钻头体上并适于围绕锥体轴线旋转的滚动锥切割器。 此外，钻头包括至少一个插入件，其具有固定在滚动锥形切割器中的基部和从其延伸的切割部。 切割部分包括一对相对于彼此成锥形的侧面表面，以形成细长的凿孔，其包括第一顶端，第二顶端和位于其间的顶点。 在第一顶端处的横向曲率半径小于顶点处的横向曲率半径，并且在第二顶端处的横向曲率半径小于顶点处的横向曲率半径。

    Rock bit and inserts with a chisel crest having a broadened region
    4.
    发明授权
    Rock bit and inserts with a chisel crest having a broadened region 有权
    岩石钻头和插入物，具有加宽区域的凿子顶部

    公开(公告)号：US08205692B2

    公开(公告)日：2012-06-26

    申请号：US11858359

    申请日：2007-09-20

    申请人： Scott D. McDonough ,  Brandon M. Moss ,  James C. Minikus

    发明人： Scott D. McDonough ,  Brandon M. Moss ,  James C. Minikus

    IPC分类号： E21B10/16 ,  E21B10/08

    CPC分类号： E21B10/50 ,  E21B10/16 ,  E21B10/52

    摘要： A drill bit for cutting a borehole comprises a bit body. In addition, the drill bit comprises a rolling cone cutter mounted on the bit body and adapted for rotation about a cone axis. Further, the drill bit comprises at least one insert having a base portion secured in the rolling cone cutter and a cutting portion extending therefrom. The cutting portion includes a pair of flanking surfaces that taper towards one another to form an elongate chisel crest including a first crest end, a second crest end, and an apex positioned therebetween. A transverse radius of curvature at the first crest end is less than a transverse radius of curvature at the apex, and a transverse radius of curvature at the second crest end is less than the transverse radius of curvature at the apex.

    摘要翻译： 用于切割钻孔的钻头包括钻头体。 此外，钻头包括安装在钻头体上并适于围绕锥体轴线旋转的滚动锥切割器。 此外，钻头包括至少一个插入件，其具有固定在滚动锥形切割器中的基部和从其延伸的切割部。 切割部分包括一对相对于彼此成锥形的侧面表面，以形成细长的凿孔，其包括第一顶端，第二顶端和位于其间的顶点。 在第一顶端处的横向曲率半径小于顶点处的横向曲率半径，并且在第二顶端处的横向曲率半径小于顶点处的横向曲率半径。

    Drill Bit and Cutter Element Having Chisel Crest With Protruding Pilot Portion
    5.
    发明申请
    Drill Bit and Cutter Element Having Chisel Crest With Protruding Pilot Portion 有权
    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。

    Multiple inserts of different geometry in a single row of a bit
    6.
    发明授权
    Multiple inserts of different geometry in a single row of a bit 失效
    在一行的单行中具有不同几何的多个插入

    公开(公告)号：US07721824B2

    公开(公告)日：2010-05-25

    申请号：US11969713

    申请日：2008-01-04

    申请人： Amardeep Singh ,  Scott D. McDonough

    发明人： Amardeep Singh ,  Scott D. McDonough

    IPC分类号： E21B10/20

    CPC分类号： E21B10/08 ,  E21B10/16 ,  E21B10/52

    摘要： A method for designing a roller cone drill bit having a plurality of cutting elements in a row. The method includes defining a pitch pattern for the plurality of cutting elements such that a first group of adjacent cutting elements are arranged in a first pitch and a second group of adjacent cutting elements are arranged in a second pitch in the row, wherein the first group of adjacent cutting elements have a different extension length than the second group of adjacent cutting elements, evaluating the pitch pattern of the plurality of cutting elements in the row, and modifying at least one of the plurality of cutting elements based on the evaluating of the pitch pattern of the plurality of cutting elements.

    摘要翻译： 一种用于设计具有一排中的多个切割元件的滚子锥形钻头的方法。 该方法包括限定多个切割元件的间距图案，使得第一组相邻的切割元件以第一间距布置，并且第二组相邻的切割元件以该行中的第二间距排列，其中第一组 相邻的切割元件具有与第二组相邻的切割元件不同的延伸长度，评估行中的多个切割元件的俯仰图案，并且基于俯仰的评估来修改多个切割元件中的至少一个 多个切割元件的图案。

    Arrangement of roller cone inserts
    7.
    发明授权
    Arrangement of roller cone inserts 失效
    滚子锥形插入件的布置

    公开(公告)号：US07549490B2

    公开(公告)日：2009-06-23

    申请号：US11557226

    申请日：2006-11-07

    申请人： Scott D. McDonough ,  Amardeep Singh

    发明人： Scott D. McDonough ,  Amardeep Singh

    IPC分类号： E21B10/08

    CPC分类号： E21B10/16 ,  E21B10/52

    摘要： A drill bit having cutting elements disposed on a roller cone surface in a non-linear pattern, wherein at least one of the cutting elements is asymmetrical to its axis of orientation. Also, a method for selecting and adjusting a cutting element orientation based on crater profile geometry which results in increased bottom hole coverage.

    摘要翻译： 一种具有以非线性图案设置在滚子锥面上的切割元件的钻头，其中至少一个切割元件对其取向轴线不对称。 另外，基于火山口轮廓几何形状来选择和调整切割元件取向的方法，其导致井底覆盖率的增加。

    MULTIPLE INSERTS OF DIFFERENT GEOMETRY IN A SINGLE ROW OF A BIT
    8.
    发明申请
    MULTIPLE INSERTS OF DIFFERENT GEOMETRY IN A SINGLE ROW OF A BIT 失效
    在一个单行中的不同几何的多个插入

    公开(公告)号：US20080201115A1

    公开(公告)日：2008-08-21

    申请号：US11969713

    申请日：2008-01-04

    申请人： Amardeep Singh ,  Scott D. McDonough

    发明人： Amardeep Singh ,  Scott D. McDonough

    IPC分类号： G06F17/50 ,  E21B10/16

    CPC分类号： E21B10/08 ,  E21B10/16 ,  E21B10/52

    摘要： A method for designing a roller cone drill bit having a plurality of cutting elements in a row. The method includes defining a pitch pattern for the plurality of cutting elements such that a first group of adjacent cutting elements are arranged in a first pitch and a second group of adjacent cutting elements are arranged in a second pitch in the row, wherein the first group of adjacent cutting elements have a different extension length than the second group of adjacent cutting elements, evaluating the pitch pattern of the plurality of cutting elements in the row, and modifying at least one of the plurality of cutting elements based on the evaluating of the pitch pattern of the plurality of cutting elements.

    摘要翻译： 一种用于设计具有一排中的多个切割元件的滚子锥形钻头的方法。 该方法包括限定多个切割元件的间距图案，使得第一组相邻的切割元件以第一间距布置，并且第二组相邻的切割元件以该行中的第二间距排列，其中第一组 相邻的切割元件具有与第二组相邻的切割元件不同的延伸长度，评估行中的多个切割元件的俯仰图案，并且基于俯仰的评估来修改多个切割元件中的至少一个 多个切割元件的图案。

    Methods for evaluating cutting arrangements for drill bits and their application to roller cone drill bit designs
    9.
    发明授权
    Methods for evaluating cutting arrangements for drill bits and their application to roller cone drill bit designs 有权
    评估钻头切削布置的方法及其在圆锥钻头设计中的应用

    公开(公告)号：US07292967B2

    公开(公告)日：2007-11-06

    申请号：US10854067

    申请日：2004-05-26

    申请人： Scott D. McDonough ,  Amardeep Singh ,  Daniel W. Brietzke

    发明人： Scott D. McDonough ,  Amardeep Singh ,  Daniel W. Brietzke

    IPC分类号： G06G7/48

    CPC分类号： E21B10/16 ,  E21B10/00 ,  E21B10/52

    摘要： A method for evaluating a cutting arrangement for a drill bit includes selecting a cutting element arrangement for the drill bit and calculating a score for the cutting arrangement. This method may be used to evaluate the cutting efficiency of various drill bit designs. In one example, this method is used to calculate a score for an arrangement based on a comparison of an expected bottom hole pattern for the arrangement with a preferred bottom hole pattern. The use of this method has lead to roller cone drill bit designs that exhibit reduce tracking over prior art bits.

    摘要翻译： 用于评估钻头的切割装置的方法包括：选择用于钻头的切割元件布置并计算切割布置的得分。 该方法可用于评估各种钻头设计的切割效率。 在一个示例中，该方法用于基于用于布置的预期底孔图案与优选底孔图案的比较来计算布置的得分。 这种方法的使用导致了滚筒锥钻钻头设计，显示出比现有技术钻头减少的跟踪。

    Drill Bit and Cutter Element Having Chisel Crest With Protruding Pilot Portion
    10.
    发明申请
    Drill Bit and Cutter Element Having Chisel Crest With Protruding Pilot Portion 有权
    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：US20100059286A1

    公开(公告)日：2010-03-11

    申请号：US12618997

    申请日：2009-11-16

    申请人： Scott D. McDonough ,  Amardeep Singh

    发明人： Scott D. McDonough ,  Amardeep Singh

    IPC分类号： E21B10/58 ,  E21B10/08 ,  E21B10/52

    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。