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    • 6. 发明申请
    • WELL BARRIER APPARATUS AND ASSOCIATED METHODS
    • 良好的障碍装置和相关方法
    • US20080115944A1
    • 2008-05-22
    • US11941528
    • 2007-11-16
    • ROBERT COONMichael J. Foster
    • ROBERT COONMichael J. Foster
    • E21B33/127
    • E21B43/103E21B33/12
    • A barrier forming apparatus is deployable through a conduit component in a well. The apparatus has a snap latch that removably couples to a work string. A mandrel element in the apparatus is selectively moveable with the coupling element. A plurality of locator dogs on the apparatus are spring biased and are activated when pressure is applied to a piston in the apparatus, which release the locator dogs. Once activated, the locator dogs engage a first grove the in the conduit component. When the work string is pulled up while the apparatus is held by the locator dogs, a plurality of locking dogs are activated by movement of a mandrel element caused by the work string. The locking dogs engage second grooves in the conduit component. Continued pulling of the work string moves a cone attached to a distal end of the mandrel element, and the moving cone deforms a barrier element positioned between an end of the apparatus' housing and the cone. The deformed barrier element forms a barrier in the conduit component between upper and lower completions. Removal of the barrier is achieved by reversing the steps. The apparatus can be used to isolate an expandable sand screen section below the conduit component.
    • 屏障形成装置可通过井中的导管部件展开。 该装置具有可拆卸地耦合到工作串的卡扣闩锁。 装置中的心轴元件可选择性地与联接元件一起移动。 设备上的多个定位器卡簧被弹簧偏置,并且当压力施加到设备中的活塞上时被激活,释放定位器卡爪。 一旦被激活,定位器的啮合在导管部件中的第一个沟槽。 当该装置被定位犬保持时拉出工作串时,通过由工作串引起的心轴元件的移动来激活多个锁定爪。 锁定爪接合导管部件中的第二凹槽。 工作串的连续拉动使附接到心轴元件的远端的锥体移动,并且移动锥体使位于设备壳体的端部与锥体之间的阻挡元件变形。 变形的阻挡元件在上部和下部完井之间的导管部件中形成屏障。 通过颠倒步骤来实现阻挡层的去除。 该装置可用于隔离导管部件下方的可膨胀砂筛部分。
    • 7. 发明授权
    • Vibratory rotation sensor with AC forcing and sensing electronics
    • 具有交流强制和感应电子元件的振动旋转传感器
    • US5850041A
    • 1998-12-15
    • US821785
    • 1997-03-21
    • Lalit KumarMichael J. FosterThomas A. Bittner
    • Lalit KumarMichael J. FosterThomas A. Bittner
    • G01P3/48G01C19/567G01C19/00G01P9/00
    • G01C19/567G01C19/5691
    • The invention is a method and apparatus for controlling the vibration modes of a vibratory rotation sensor (VRS) comprising a resonator and a housing which together serve as the ground potential reference. The resonator has a surface with a conductive region and the housing has a plurality of attached electrodes positioned opposing the conductive region on the resonator. The parameters of the resonator standing-wave vibration pattern are determined by feeding an ac sensing signal to the conducting region on the resonator and obtaining one or more vibration signals while the electric potential of the conductive region on the resonator is maintained within 100 millivolts of ground. Each vibration signal is a replica of the ac sensing signal with amplitude modulation which is a periodic function of the distance from a point in the conducting region of the surface of the resonator to an opposing housing electrode. The frequency of the amplitude modulation is the vibration frequency of the resonator. The parameters of the standing wave are determined from the vibration signals, and these parameters are used in controlling the standing-wave parameters by generating appropriate ac forcing voltages which are applied to the housing electrodes.
    • 本发明是一种用于控制振动旋转传感器(VRS)的振动模式的方法和装置,该振动旋转传感器(VRS)包括共振器和外壳,它们共同作为地电位基准。 谐振器具有带有导电区域的表面,并且壳体具有多个附着的电极,该电极与谐振器上的导电区域相对定位。 谐振器驻波振动模式的参数通过将馈电感测信号馈送到谐振器上的导电区域并获得一个或多个振动信号来确定,同时谐振器上的导电区域的电位保持在100毫伏的地面 。 每个振动信号是具有幅度调制的交流感测信号的副本,其是从谐振器的表面的导电区域中的点到相对的壳体电极的距离的周期函数。 振幅调制的频率是谐振器的振动频率。 由振动信号确定驻波的参数,并通过产生施加到壳体电极的合适的交流强制电压来将这些参数用于控制驻波参数。
    • 9. 发明申请
    • MICROELECTROMECHANICAL SYSTEMS DESIGN FEATURE
    • 微电子系统设计特点
    • US20080315400A1
    • 2008-12-25
    • US11766939
    • 2007-06-22
    • Michael J. Foster
    • Michael J. Foster
    • H01L23/48H01L21/00
    • B81B3/0008B81C3/001B81C2203/0109B81C2203/031H01L21/50
    • A device for reducing the chance that a microelectromechanical systems (MEMS) device with moving parts will have those parts stick to a glass cover of the MEMS device, and a method for making the device. An example embodiment of the invention includes a MEMS device wafer, a substrate wafer, and a glass cover. The MEMS device wafer includes perforations corresponding to the location(s) of exposed glass on the cover. An example embodiment of a method of the invention includes applying metal layers to a glass cover, perforating a device wafer at locations corresponding to areas of exposed glass on the glass cover, mounting the device wafer to the substrate wafer, and anodically bonding the glass cover to the substrate wafer or to the device wafer.
    • 用于减少具有移动部件的微机电系统(MEMS)装置将具有粘附到MEMS装置的玻璃盖的机会的装置以及用于制造该装置的方法。 本发明的示例性实施例包括MEMS器件晶片,衬底晶片和玻璃盖。 MEMS器件晶片包括对应于盖上暴露的玻璃的位置的穿孔。 本发明的方法的示例性实施例包括将金属层施加到玻璃盖上,在对应于玻璃盖上的暴露玻璃的区域的位置上穿孔设备晶片,将器件晶片安装到基板晶片,以及阳极接合玻璃盖 到基板晶片或器件晶片。
    • 10. 发明授权
    • Full bore set down tool assembly for gravel packing a well
    • 全孔下放工具组件,用于砾石包装井
    • US06220353B1
    • 2001-04-24
    • US09302974
    • 1999-04-30
    • Michael J. FosterSteven L. AnyanHarold Steven Bissonnette
    • Michael J. FosterSteven L. AnyanHarold Steven Bissonnette
    • E21B4304
    • E21B34/12E21B43/04E21B2034/002
    • A full bore set down tool assembly provides a housing attached to a packer in a wellbore and aligned with the production zone. A service tool of the tool assembly is attached to a tubing string extending to the surface and is adapted for selective, removable attachment to and positioning within the housing. The tool assembly defines a downstream flow path and a return flow path when the service tool is attached to the housing. A ball valve that is selectively shiftable from the surface opens and closes the return flow path to define a circulate position and a squeeze position. The housing, service tool, and ball valve also define a reverse position. The tool assembly facilitates gravel packing of the annulus between the wellbore casing and the service string including the tool assembly.
    • 全孔下放工具组件提供连接到井筒中的封隔器并与生产区域对准的壳体。 工具组件的维修工具附接到延伸到表面的管柱,并且适于选择性地,可拆卸地附接到壳体内并定位在壳体内。 当维修工具附接到壳体时,工具组件限定下游流动路径和返回流动路径。 从表面选择性地移动的球阀打开和关闭回流路径以限定循环位置和挤压位置。 外壳,维修工具和球阀也定义了相反的位置。 工具组件有利于井筒壳体与包括工具组件的工作串之间的环空的砾石填充。