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公开(公告)号：US20090107730A1
公开(公告)日：2009-04-30
申请号：US12260245
申请日：2008-10-29
IPC分类号： E21B10/00
摘要： A drill bit having a bit body includes a blade face surface on at least one blade extending longitudinally and radially outward over a face of the bit body. The blade face surface of the at least one blade includes a contact zone and a sweep zone. The sweep zone rotationally trails the contact zone with respect to a direction of intended bit rotation about a longitudinal axis of the bit body provides reduce rubbing contact when engaging with a subterranean formation.
摘要翻译： 具有钻头体的钻头包括在钻头体的表面上纵向和径向向外延伸的至少一个刀片上的刀片表面。 所述至少一个叶片的叶片表面包括接触区域和扫掠区域。 扫掠区域相对于围绕钻头体的纵向轴线的预期钻头旋转的方向旋转地接触接触区域，并且当与地下地层接合时提供减少的摩擦接触。
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公开(公告)号：US07836979B2
公开(公告)日：2010-11-23
申请号：US12260245
申请日：2008-10-29
摘要： A drill bit having a bit body includes a blade face surface on at least one blade extending longitudinally and radially outward over a face of the bit body. The blade face surface of the at least one blade includes a contact zone and a sweep zone. The sweep zone rotationally trails the contact zone with respect to a direction of intended bit rotation about a longitudinal axis of the bit body provides reduce rubbing contact when engaging with a subterranean formation.
摘要翻译： 具有钻头体的钻头包括在钻头体的表面上纵向和径向向外延伸的至少一个刀片上的刀片表面。 所述至少一个叶片的叶片表面包括接触区域和扫掠区域。 扫掠区域相对于围绕钻头体的纵向轴线的预期钻头旋转的方向旋转地接触接触区域，并且当与地下地层接合时提供减少的摩擦接触。
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3.发明授权Methods for applying wear-resistant material to exterior surfaces of earth-boring tools and resulting structures 有权将耐磨材料应用于镗孔工具和结构结构的外表面的方法公开(公告)号：US08104550B2
公开(公告)日：2012-01-31
申请号：US11864482
申请日：2007-09-28
申请人： James L. Overstreet , Michael L. Doster , Mark E. Morris , Kenneth E. Gilmore , Robert M. Welch , Danielle V. Roberts
发明人： James L. Overstreet , Michael L. Doster , Mark E. Morris , Kenneth E. Gilmore , Robert M. Welch , Danielle V. Roberts
IPC分类号： E21B10/36
摘要： Earth-boring tools include wear-resistant materials disposed in at least one recess formed in an exterior surface of a body thereof. Exposed surfaces of the wear-resistant material are substantially level with exterior surfaces of the body adjacent the wear-resistant material. In some embodiments, recesses may be formed in formation-engaging surfaces of blades of earth-boring rotary tools, adjacent one or more inserts secured to bodies of earth-boring tools, or adjacent one or more cutting elements secured to bodies of earth-boring tools. Methods of forming earth-boring tools include filling one or more recesses formed in an exterior surface of a body with wear-resistant material and causing exposed surfaces of the wear-resistant material to be substantially level with the exterior surface of the body.
摘要翻译： 钻孔工具包括设置在形成在其本体的外表面中的至少一个凹部中的耐磨材料。 耐磨材料的露出表面与身体的与耐磨材料相邻的外表面基本平齐。 在一些实施例中，凹槽可以形成在钻孔旋转工具的叶片的形成接合表面中，邻近一个或多个插入件固定到钻孔工具的主体，或邻近的一个或多个切割元件固定到镗孔体 工具 形成钻孔工具的方法包括用耐磨材料填充形成在主体的外表面中的一个或多个凹部，并使耐磨材料的暴露表面与主体的外表面基本平齐。
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公开(公告)号：US20080179108A1
公开(公告)日：2008-07-31
申请号：US12020492
申请日：2008-01-25
申请人： Eric E. McClain , David Gavia , Lane E. Snell , Jason E. Hoines , Matthew R. Isbell , Michael L. Doster
发明人： Eric E. McClain , David Gavia , Lane E. Snell , Jason E. Hoines , Matthew R. Isbell , Michael L. Doster
IPC分类号： E21B10/43
摘要： A rotary drag bit includes a primary cutter row comprising at least one primary cutter, and at least two additional cutters configured relative to one another. In one embodiment, the cutters are backup cutters of a cutter group located in respective first and second trailing cutter rows, oriented relative to one another, and positioned to substantially follow the at least one primary cutter. The rotary drag bit life is extended by the backup cutter group, making the bit more durable and extending the life of the cutters. In other of the embodiments, the cutters are configured to selectively engage a subterranean formation material being drilled, providing improved bit life and reduced stress upon the cutters. Still other embodiments of rotary drag bits include backup cutter configurations having different backrake angles and siderake angles, including methods therefor.
摘要翻译： 旋转牵引钻头包括主切割器行，其包括至少一个主切割器，以及至少两个相对于彼此配置的附加切割器。 在一个实施例中，切割器是位于相应的第一和第二拖尾切割器行中的切割器组的备用切割器，其相对于彼此定向并且被定位成基本上跟随至少一个主切割器。 旋转拖曳钻头的寿命由后备刀具组延长，使钻头更耐用，延长刀具的使用寿命。 在其他实施例中，切割器被配置为选择性地接合正在钻孔的地下地层材料，提供改善的钻头寿命并减少切割器上的应力。 旋转拖曳钻头的其他实施例包括具有不同的反向角度和擒挡角度的后备刀具配置，包括其方法。
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公开(公告)号：US07861809B2
公开(公告)日：2011-01-04
申请号：US12019814
申请日：2008-01-25
申请人： David Gavia , Ryan J. Hanford , Lane E. Snell , Jason E. Hoines , Matthew R. Isbell , Eric E. McClain , Michael L. Doster
发明人： David Gavia , Ryan J. Hanford , Lane E. Snell , Jason E. Hoines , Matthew R. Isbell , Eric E. McClain , Michael L. Doster
IPC分类号： E21B10/43
摘要： A rotary drag bit includes a primary cutter row comprising at least one primary cutter and a multiple backup cutter group. The multiple backup cutter group comprises a first and second trailing cutter row, each comprising at least one cutter positioned to follow the at least one primary cutter. The rotary drag bit life is extended by the multiple backup cutter groups making the bit more durable and extending the life of the cutters. Further, the cutters of the multiple backup cutter group are configured to selectively engage a subterranean formation material being drilled, providing improved bit life and reduced stress upon the cutters. Other embodiments of rotary drag bits are provided.
摘要翻译： 旋转牵引钻头包括主切割器行，其包括至少一个主切割器和多个备用切割器组。 多个备用切割器组包括第一和第二拖尾切割器排，每个包括至少一个定位成跟随至少一个主切割器的切割器。 旋转拖曳钻头寿命由多个支撑刀具组延长，使刀头更加耐用，延长刀具的使用寿命。 此外，多支撑切割器组的切割器构造成选择性地接合正被钻孔的地下地层材料，从而提供改善的钻头寿命并减小刀具上的应力。 提供旋转阻力钻头的其他实施例。
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公开(公告)号：US07762355B2
公开(公告)日：2010-07-27
申请号：US12020492
申请日：2008-01-25
申请人： Eric E. McClain , David Gavia , Lane E. Snell , Jason E. Hoines , Matthew R. Isbell , Michael L. Doster
发明人： Eric E. McClain , David Gavia , Lane E. Snell , Jason E. Hoines , Matthew R. Isbell , Michael L. Doster
IPC分类号： E21B10/46
摘要： A rotary drag bit includes a primary cutter row comprising at least one primary cutter, and at least two additional cutters configured relative to one another. In one embodiment, the cutters are backup cutters of a backup cutter group located in respective first and second trailing cutter rows, oriented relative to one another, and positioned to substantially follow the at least one primary cutter. The rotary drag bit life is extended by the backup cutter group, making the bit more durable and extending the life of the cutters. In other of the embodiments, the cutters are configured to selectively engage a subterranean formation material being drilled, providing improved bit life and reduced stress upon the cutters. Still other embodiments of rotary drag bits include backup cutter configurations having different backrake angles and siderake angles, including methods therefor.
摘要翻译： 旋转牵引钻头包括主切割器行，其包括至少一个主切割器，以及至少两个相对于彼此配置的附加切割器。 在一个实施例中，切割器是位于相应的第一和第二拖尾切割器行中的备用切割器组的备用切割器，其相对于彼此定向并且被定位成基本上跟随至少一个主切割器。 旋转拖曳钻头的寿命由后备刀具组延长，使钻头更耐用，延长刀具的使用寿命。 在其他实施例中，切割器被配置为选择性地接合正在钻孔的地下地层材料，提供改善的钻头寿命并减少切割器上的应力。 旋转拖曳钻头的其他实施例包括具有不同的反向角度和擒挡角度的后备刀具配置，包括其方法。
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公开(公告)号：US20080179106A1
公开(公告)日：2008-07-31
申请号：US12019814
申请日：2008-01-25
申请人： David Gavia , Ryan J. Hanford , Lane E. Snell , Jason E. Hoines , Matthew R. Isbell , Eric E. McClain , Michael L. Doster
发明人： David Gavia , Ryan J. Hanford , Lane E. Snell , Jason E. Hoines , Matthew R. Isbell , Eric E. McClain , Michael L. Doster
IPC分类号： E21B10/43
摘要： A rotary drag bit includes a primary cutter row comprising at least one primary cutter and a multiple backup cutter group. The multiple backup cutter group comprises a first and second trailing cutter row, each comprising at least one cutter positioned to follow the at least one primary cutter. The rotary drag bit life is extended by the multiple backup cutter groups making the bit more durable and extending the life of the cutters. Further, the cutters of the multiple backup cutter group are configured to selectively engage a subterranean formation material being drilled, providing improved bit life and reduced stress upon the cutters. Other embodiments of rotary drag bits are provided.
摘要翻译： 旋转牵引钻头包括主切割器行，其包括至少一个主切割器和多个备用切割器组。 多个备用切割器组包括第一和第二拖尾切割器排，每个包括至少一个定位成跟随至少一个主切割器的切割器。 旋转拖曳钻头寿命由多个支撑刀具组延长，使刀头更加耐用，延长刀具的使用寿命。 此外，多支撑切割器组的切割器构造成选择性地接合正被钻孔的地下地层材料，提供改善的钻头寿命并减小切割器上的应力。 提供旋转阻力钻头的其他实施例。
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公开(公告)号：US20080190670A1
公开(公告)日：2008-08-14
申请号：US12029197
申请日：2008-02-11
IPC分类号： E21B10/52
CPC分类号： E21B10/43
摘要： A fixed cutter rotary drill bit having gauge cutting elements at large back rake angles are disclosed. The gauge is located at the outer diameter side wall portion of the bit that extends from the cutting end. The gauge and its cutting components contact the side wall of the bore hole during drilling operations. The gauge cutting elements may be configured at a back rake angle in a range of about 40° to 70°.
摘要翻译： 公开了一种具有大后排前角的量规切割元件的固定式旋转钻头。 该量规位于从切割端延伸的钻头的外径侧壁部分。 测量仪及其切割部件在钻孔操作期间接触钻孔的侧壁。 量规切割元件可以构造在约40°至70°的范围内的后倾角。
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9.发明申请SYSTEM, PROGRAM PRODUCT, AND RELATED METHODS FOR BIT DESIGN OPTIMIZATION AND SELECTION 有权系统，程序产品和相关方法用于位设计优化和选择公开(公告)号：US20100030527A1
公开(公告)日：2010-02-04
申请号：US12502754
申请日：2009-07-14
CPC分类号： E21B10/00
摘要： Systems, program product, and methods are provided which include analyzing the drillability of a subterranean formation and a database of performance characteristics for drilling bits to facilitate bit design optimization and selection for that formation. Using component subterranean formation data, computer models can be generated for the drillability of a target section in terms of physical, mechanical, and micro-structural properties, and for postulated suitable drilling bit performance characteristics based on physical, mechanical, and micro-structural properties of the target section. The drilling bit performance characteristics are then updated by quantifying effects of the drilling system to be employed. Each performance characteristic can be normalized and plotted on its own axis for easy comparison. Next, a candidate drilling bit design is selected from a library of computer models of drilling bit characteristics for a suite of drilling bit designs. An optimization of the drilling bit design may be also performed.
摘要翻译： 提供了系统，程序产品和方法，其中包括分析地层的可钻性和钻头的性能特征数据库，以便于钻头设计优化和选择。 使用组件地下地层数据，可以根据物理，机械和微观结构特性以及基于物理，机械和微结构特性的假定的合适的钻头性能特征生成计算机模型以用于目标区段的可钻性 的目标部分。 然后通过量化所采用的钻井系统的影响来更新钻头性能特征。 每个性能特征可以归一化并绘制在自己的轴上以便于进行比较。 接下来，从用于一组钻头设计的钻头特征的计算机模型库中选择候选钻头设计。 也可以进行钻头设计的优化。
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10.发明申请CUTTING STRUCTURES FOR CASING COMPONENT DRILLOUT AND EARTH BORING DRILL BITS INCLUDING SAME 有权用于铸造组件钻孔和接地钻孔钻头的切割结构公开(公告)号：US20090084608A1
公开(公告)日：2009-04-02
申请号：US12030110
申请日：2008-02-12
申请人： Eric E. McClain , Michael L. Doster , John C. Thomas , Matthew R. Isbell , Jarod DeGeorge , Chad T. Jurica
发明人： Eric E. McClain , Michael L. Doster , John C. Thomas , Matthew R. Isbell , Jarod DeGeorge , Chad T. Jurica
IPC分类号： E21B10/42
CPC分类号： E21B10/43 , E21B10/485 , E21B29/06
摘要： A drill bit includes a bit body having a face on which two different types of cutters are disposed, the first type being cutting elements suitable for drilling at least one subterranean formation and the second type being at least one of an abrasive cutting structure and an abrasive cutting element suitable for drilling through a casing shoe, reamer shoe, casing bit, casing or liner string and cementing equipment or other components as well as cement Methods of forming earth-boring tools are also disclosed.
摘要翻译： 钻头包括具有一个面的钻头体，其上设有两种不同类型的切割器，第一类型是适于钻取至少一个地下地层的切割元件，第二类型是磨料切割结构和研磨剂中的至少一种 适用于通过套管，扩孔器，套管钻头，套管或衬套线以及固井设备或其他部件以及水泥钻孔的切削元件还公开了形成钻孔工具的方法。
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