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    Roller cone drill bits with optimized bearing structures
    4.
    发明授权
    Roller cone drill bits with optimized bearing structures 有权
    滚子锥钻头，具有优化的轴承结构

    公开(公告)号：US07360612B2

    公开(公告)日：2008-04-22

    申请号：US11202878

    申请日：2005-08-12

    申请人： Shilin Chen ,  Ping C. Sui

    发明人： Shilin Chen ,  Ping C. Sui

    IPC分类号： E21B10/00

    CPC分类号： E21B10/22 ,  E21B10/16

    摘要： A roller cone drill bit may include optimally designed bearing structures and cutting structures. The roller cone drill bit may include three cone assemblies rotatably mounted on respective spindles via respective bearing structures. Each cone assembly may have a respective cutting structure with a minimal moment center located along each respective axis of rotation. Each respective bearing structure has a center point located proximate each respective minimal moment center.

    摘要翻译： 滚子锥钻头可以包括最佳设计的轴承结构和切割结构。 滚子锥钻头可以包括通过相应的轴承结构可旋转地安装在相应主轴上的三个锥形组件。 每个锥形组件可以具有相应的切割结构，沿着每个相应的旋转轴线具有最小的力矩中心。 每个相应的轴承结构具有位于每个相应的最小力矩中心附近的中心点。

    Drill bit with extended life seal
    5.
    发明授权
    Drill bit with extended life seal 有权

    公开(公告)号：US09677341B2

    公开(公告)日：2017-06-13

    申请号：US13381591

    申请日：2010-07-12

    申请人： Seth G. Anderle ,  Ping C. Sui ,  Mark E. Williams ,  Guy Lefort

    发明人： Seth G. Anderle ,  Ping C. Sui ,  Mark E. Williams ,  Guy Lefort

    IPC分类号： E21B10/25

    CPC分类号： E21B10/25

    摘要： An extended life seal is incorporated into a drill bit used for drilling a wellbore. The drill bit can include a seal surface, a seal which engages the seal surface, and a groove which compresses the seal greater on opposite axial sides than at a central portion of the seal. The drill bit may include the seal having a cylindrical surface which engages the seal surface, and another cylindrical surface opposite the first surface, and the groove having a third cylindrical surface which engages the second surface, and wherein the groove simultaneously biases the seal toward the seal surface on opposite axial sides of the third surface. The drill bit may include the seal having right cylindrical shaped inner and outer surfaces, and a contact pressure between the seal surface and the seal being greater at each opposite side of the seal than at a central portion of the seal.

    Roller cone drill bits with optimized bearing structures
    6.
    发明授权
    Roller cone drill bits with optimized bearing structures 有权

    公开(公告)号：US09493990B2

    公开(公告)日：2016-11-15

    申请号：US11950221

    申请日：2007-12-04

    申请人： Shilin Chen ,  Ping C. Sui

    发明人： Shilin Chen ,  Ping C. Sui

    IPC分类号： E21B10/22 ,  E21B10/16

    CPC分类号： E21B10/22 ,  E21B10/16

    摘要： A roller cone drill bit may include optimally designed bearing structures and cutting structures. The roller cone drill bit may include three cone assemblies rotatably mounted on respective spindles via respective bearing structures. Each cone assembly may have a respective cutting structure with a minimal moment center located along each respective axis of rotation. Each respective bearing structure has a center point located proximate each respective minimal moment center.

    DRILL BIT WITH EXTENDED LIFE SEAL
    7.
    发明申请
    DRILL BIT WITH EXTENDED LIFE SEAL 有权
    钻头与扩展生命密封

    公开(公告)号：US20120111639A1

    公开(公告)日：2012-05-10

    申请号：US13381591

    申请日：2010-07-12

    申请人： Seth G. Anderle ,  Ping C. Sui ,  Mark E. Williams ,  Guy Lefort

    发明人： Seth G. Anderle ,  Ping C. Sui ,  Mark E. Williams ,  Guy Lefort

    IPC分类号： E21B10/25

    CPC分类号： E21B10/25

    摘要： Systems and methods are provided for swellable material activation and monitoring in a subterranean well. A sensor system for use in a subterranean well includes a swellable material, and at least one sensor which is displaced to a wellbore surface in response to swelling of the swellable material. Another sensor system includes a sensor which detects swelling of a swellable material. A swellable well tool system includes a base pipe, a swellable material on an exterior of the base pipe, and eccentric weighting for inducing rotation of the swellable material about a longitudinal axis of the base pipe.

    摘要翻译： 提供了用于在地下井中进行可膨胀材料活化和监测的系统和方法。 用于地下井的传感器系统包括可溶胀材料和至少一个传感器，其响应于可溶胀材料的膨胀而移动到井筒表面。 另一个传感器系统包括一个检测膨胀材料膨胀的传感器。 可膨胀的井具系统包括基管，基管的外部上的可溶胀材料和用于引起可溶胀材料围绕基管的纵向轴线的旋转的偏心加权。

    Roller cone drill bits with enhanced drilling stability and extended life of associated bearings and seals
    8.
    发明授权
    Roller cone drill bits with enhanced drilling stability and extended life of associated bearings and seals 有权
    滚子锥钻头具有增强的钻井稳定性和延长相关轴承和密封件的使用寿命

    公开(公告)号：US07434632B2

    公开(公告)日：2008-10-14

    申请号：US10919990

    申请日：2004-08-17

    申请人： Shilin Chen ,  Ping C. Sui

    发明人： Shilin Chen ,  Ping C. Sui

    IPC分类号： E21B10/16 ,  E21B10/08

    CPC分类号： E21B10/16

    摘要： Roller cone drill bits may be formed with cutting elements and cutting structures having cutting element profile angles selected to minimize cone wobble and improve life of associated bearings and seals. Normal force axes of the cutting elements may intersect with each other as a force center. Crest points of the cutting elements may be disposed on one or more circles extending from the associated force center.

    摘要翻译： 滚子锥钻头可以形成有切割元件和切割结构，其具有选择的切割元件轮廓角以最小化锥形摆动并且改善相关联的轴承和密封件的寿命。 切割元件的法向力轴可以作为力中心彼此相交。 切割元件的顶点可以设置在从相关联的力中心延伸的一个或多个圆上。

    Bearing contact pressure reduction in well tools
    9.
    发明授权
    Bearing contact pressure reduction in well tools 有权
    井下工具中的轴承接触减压

    公开(公告)号：US08459379B2

    公开(公告)日：2013-06-11

    申请号：US12685821

    申请日：2010-01-12

    申请人： Ping C. Sui ,  Gary E. Weaver

    发明人： Ping C. Sui ,  Gary E. Weaver

    IPC分类号： E21B10/22

    CPC分类号： E21B4/003 ,  E21B10/22 ,  F16C39/00 ,  F16C2352/00

    摘要： A method of reducing contact pressure between bearing surfaces of a well tool can include constructing a structure which supports one bearing surface in contact with the other bearing surface, and reducing contact pressure between the bearing surfaces by relieving strain energy in the structure. A well tool can include one bearing surface which contacts another bearing surface. There is a transition between contact and lack of contact between the bearing surfaces. A structure supporting one of the bearing surfaces can have a reduced stiffness, whereby a contact pressure between the bearing surfaces is reduced at the transition. The bearing surfaces can be formed on a thrust bearing, plain bearing, or other type of bearing between components of the well tool.

    摘要翻译： 一种降低井工具的支承面之间的接触压力的方法可以包括构造一种支撑与另一支承表面接触的一个支承表面的结构，以及通过减轻结构中的应变能来减小支承表面之间的接触压力。 良好的工具可以包括接触另一支承表面的一个支承表面。 在轴承表面的接触和接触不足之间存在过渡。 支撑一个轴承表面的结构可以具有降低的刚度，由此在转变时轴承表面之间的接触压力减小。 轴承表面可以形成在推力轴承，滑动轴承或井工具的部件之间的其他类型的轴承。