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43 条记录 (耗时 0.046 秒)

    CUTTING ELEMENT PLACEMENT ON A FIXED CUTTER DRILL BIT TO REDUCE DIAMOND TABLE FRACTURE
    21.
    发明申请
    CUTTING ELEMENT PLACEMENT ON A FIXED CUTTER DRILL BIT TO REDUCE DIAMOND TABLE FRACTURE 有权
    切割元件放置在固定的切割钻头上，以减少钻石表的碎片

    公开(公告)号：US20120234608A9

    公开(公告)日：2012-09-20

    申请号：US12537899

    申请日：2009-08-07

    申请人： David Gavia ,  Floyd C. Felderhoff ,  Matthew R. Isbell ,  Michael L. Doster

    发明人： David Gavia ,  Floyd C. Felderhoff ,  Matthew R. Isbell ,  Michael L. Doster

    IPC分类号： E21B10/55 ,  E21B10/54 ,  E21B10/42

    CPC分类号： E21B10/43 ,  E21B10/55

    摘要： A rotary drag bit includes a primary cutter row comprising at least one primary cutter mounted on a blade, at least some cutters in the primary cutter row having a portion of a cutting surface thereof covered by a portion of the blade. A backup cutter row comprising at least one cutter may also be included, and at least a portion of a cutting surface of at least some cutters in the backup cutter row is covered by a portion of the blade. Enhanced support for cutters is provided against impact loading.

    摘要翻译： 旋转牵引钻头包括主切割器行，其包括安装在叶片上的至少一个主切割器，主切割器列中的至少一些切割器具有其切割表面的一部分由叶片的一部分覆盖。 还可以包括包括至少一个切割器的备用切割器排，并且备用切割器行中的至少一些切割器的切割表面的至少一部分被叶片的一部分覆盖。 针对冲击载荷提供了对刀具的增强支撑。

    ROTARY DRAG BIT AND METHODS THEREFOR
    23.
    发明申请
    ROTARY DRAG BIT AND METHODS THEREFOR 审中-公开
    旋转拖动位及其方法

    公开(公告)号：US20080179107A1

    公开(公告)日：2008-07-31

    申请号：US12020399

    申请日：2008-01-25

    申请人： Michael L. Doster

    发明人： Michael L. Doster

    IPC分类号： E21B10/43

    CPC分类号： E21B10/55 ,  E21B10/43

    摘要： A rotary drag bit includes a bit body having a face and an axis, a plurality of blades extending radially and longitudinally outward from the face, and at least one split cutter set. The split cutter set includes a plurality of cutters, where at least two of the cutters are primary and/or kerfing cutters located on different blades of the plurality of blades. The pair of primary and/or kerfing cutters of the split cutter set may be located substantially the same radial distance from a center line, or axis of rotation, of the bit and located at substantially the same longitude, or elevation, on the bit as one another, or follow substantially the same rotational or helical cutting path as each other. In addition, at least one backup cutter may be located substantially the same radial distance from a center line, or axis of rotation, of the bit and located at substantially the same longitude, or elevation, on the bit as one or both primary and/or kerfing cutters, or follow substantially the same rotational or helical path as one or both of the primary and/or kerfing cutters. The cutters of a split cutter set may be configured and oriented to provide improved bit life and reduced stress on the cutters. Other embodiments of rotary drag bits are also provided, including methods therefor.

    摘要翻译： 旋转牵引钻头包括具有面和轴的钻头体，从表面径向和纵向向外延伸的多个刀片以及至少一个分割刀具组。 分割刀具组包括多个切割器，其中至少两个切割器是位于多个叶片的不同叶片上的主和/或切割切割器。 分割刀具组的一对初级和/或切割刀具可以位于与钻头的中心线或旋转轴线基本相同的径向距离处，并且位于与钻头位置基本相同的经度或高度处 或者基本上相同的旋转或螺旋切割路径彼此相依。 此外，至少一个备用切割器可以位于与钻头的中心线或旋转轴线基本相同的径向距离处，并且位于钻头上基本上相同的经度或高度处，作为主要和/ 或切割刀具，或者遵循基本相同的旋转或螺旋路径作为主要和/或切割刀具中的一个或两个。 分割刀具组的切割器可以被配置和定向以提供改善的钻头寿命并减小刀具上的应力。 还提供了旋转阻力钻头的其它实施例，包括其方法。

    Bi-center drill bit with enhanced stabilizing features
    25.
    发明授权
    Bi-center drill bit with enhanced stabilizing features 失效
    双中心钻头具有增强的稳定特性

    公开(公告)号：US5957223A

    公开(公告)日：1999-09-28

    申请号：US811581

    申请日：1997-03-05

    申请人： Michael L. Doster ,  Jack T. Oldham

    发明人： Michael L. Doster ,  Jack T. Oldham

    IPC分类号： E21B10/26 ,  E21B10/56

    CPC分类号： E21B10/26 ,  E21B10/56

    摘要： A method and apparatus for reaming or enlarging a borehole using a bi-center bit with a stability-enhanced design. The cutters on the pilot bit section of the bi-center bit are placed and oriented to generate a lateral force vector longitudinally offset from, but substantially radially aligned with, the much larger lateral force vector generated by the reamer bit section. These two aligned force vectors thus tend to press the bit in the same lateral direction (which moves relative to the borehole sidewall as the bit rotates) along its entire longitudinal extent so that a single circumferential area of the pilot bit section gage rides against the sidewall of the pilot borehole, resulting in a reduced tendency for the bit to cock or tilt with respect to the axis of the borehole. Further, the pilot bit section includes enhanced gage pad area to accommodate this highly-focused lateral loading, particularly that attributable to the dominant force vector generated by the reamer bit section, so that the pilot borehole remains in-gage and round in configuration, providing a consistent longitudinal axis for the reamer bit section to follow.

    摘要翻译： 一种用于使用具有稳定性增强设计的双中心钻头来扩孔或扩大钻孔的方法和装置。 双中心钻头的导向钻头部分上的切割器被放置和定向以产生与由铰刀钻头部分产生的大得多的侧向力矢量纵向偏离但基本上径向对齐的横向力矢量。 这两个对准的力矢量因此倾向于沿着其整个纵向范围沿相同的横向方向（相对于钻头侧壁相对于钻孔侧壁移动）来按压钻头，使得导向钻头部分量规的单个周向区域抵靠侧壁 导致钻头相对于钻孔的轴线旋转或倾斜的趋势减小。 此外，导频位部分包括增强的测量焊盘区域以适应这种高度集中的横向负载，特别是可归因于由铰刀钻头部分产生的主力矢量，使得导向钻孔保持在构造中的圆周范围，从而提供 用于铰刀钻头部分的纵向轴线一致。

    System, program product, and related methods for bit design optimization and selection
    26.
    发明授权
    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进行位设计优化和选择

    公开(公告)号：US08296114B2

    公开(公告)日：2012-10-23

    申请号：US12502754

    申请日：2009-07-14

    申请人： Umesh Prasad ,  Mark W. Dykstra ,  Paul E. Pastusek ,  Michael L. Doster

    发明人： Umesh Prasad ,  Mark W. Dykstra ,  Paul E. Pastusek ,  Michael L. Doster

    IPC分类号： G06G7/48

    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。

    Earth-boring tools including abrasive cutting structures and related methods
    27.
    发明授权
    Earth-boring tools including abrasive cutting structures and related methods 有权
    钻孔工具包括磨料切割结构和相关方法

    公开(公告)号：US08177001B2

    公开(公告)日：2012-05-15

    申请号：US13095032

    申请日：2011-04-27

    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： E21B10/43

    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 include disposing at least one abrasive cutting structure or element on the earth-boring tool. Methods of drilling with earth-boring tools including drilling with at least one abrasive cutting structure or element.

    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，套管或衬管线​​以及固井设备或其他部件以及水泥钻孔的切割元件。 形成钻孔工具的方法包括在钻孔工具上设置至少一个研磨切割结构或元件。 使用钻孔工具进行钻孔的方法，包括用至少一个研磨切割结构或元件进行钻孔。

    DYNAMICALLY STABLE HYBRID DRILL BIT
    30.
    发明申请
    DYNAMICALLY STABLE HYBRID DRILL BIT 有权
    动态稳定的混合钻头

    公开(公告)号：US20100018777A1

    公开(公告)日：2010-01-28

    申请号：US12179915

    申请日：2008-07-25

    申请人： Rudolf Carl Pessier ,  Don Q. Nguyen ,  Michael Steven Damschen ,  Michael L. Doster

    发明人： Rudolf Carl Pessier ,  Don Q. Nguyen ,  Michael Steven Damschen ,  Michael L. Doster

    IPC分类号： E21B10/16

    CPC分类号： E21B10/14

    摘要： An earth-boring bit comprising a bit body configured at its upper extent for connection into a drillstring. A selected number of fixed blades extend downward from the bit body and a selected number of rolling cutters are mounted for rotation on the bit body. A plurality of rolling-cutter cutting elements are arranged on each rolling cutter and a plurality of fixed-blade cutting elements are arranged on each fixed blade. The selected number of fixed blades exceeds the selected number of rolling cutters by at least one.

    摘要翻译： 一种钻地钻头，包括在其上部配置的钻头体，用于连接到钻柱。 选定数量的固定刀片从钻头体向下延伸，并且选择数量的滚刀被安装用于在钻头体上旋转。 在每个轧制刀具上设置有多个轧机切割元件，并且在每个固定刀片上布置有多个固定刀片切割元件。 所选数量的固定刀片至少超过选定数量的滚刀。