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    • 3. 发明授权
    • Pressure equalising devices
    • 压力均衡装置
    • US08191629B2
    • 2012-06-05
    • US12083580
    • 2006-10-26
    • Stuart GordonIrvine C. BrownMichael A. Reid
    • Stuart GordonIrvine C. BrownMichael A. Reid
    • E21B33/12
    • E21B34/102E21B33/1294E21B47/06
    • An electronic actuation system for a pressure equalizing device in a downhole apparatus such as a wellbore plug is described. The system includes a pressure sensor for measuring pressure in the wellbore, and means for setting a reference pressure value using a measurement from the pressure sensor. In a method of use, an applied pressure value is determined using a measurement from the pressure sensor and the reference pressure value, and the device is actuated, or opened, when the applied pressure meets a pre-determined condition, such as falling within a pressure window for certain time period. The invention allows natural changes in wellbore pressure to be accounted for when detecting a pressure actuation event.
    • 描述了诸如井筒塞之类的井下设备中的均压装置的电子致动系统。 该系统包括用于测量井眼中的压力的​​压力传感器,以及用于使用来自压力传感器的测量来设定参考压力值的装置。 在使用方法中,使用来自压力传感器和参考压力值的测量来确定所施加的压力值,并且当所施加的压力满足预定条件时,例如落入 压力窗口一段时间。 本发明允许在检测压力致动事件时考虑井眼压力的自然变化。
    • 4. 发明申请
    • PRESSURE EQUALISING DEVICES
    • 压力均衡装置
    • US20110203789A1
    • 2011-08-25
    • US13098609
    • 2011-05-02
    • Stuart GordonIrvine C. BrownMichael A. Reid
    • Stuart GordonIrvine C. BrownMichael A. Reid
    • E21B4/04E21B23/00E21B33/12
    • E21B34/102E21B33/1294E21B47/06
    • An electronic actuation system for a pressure equalising device in a downhole apparatus such as a wellbore plug is described. The system includes a pressure sensor for measuring pressure in the wellbore, and means for setting a reference pressure value using a measurement from the pressure sensor. In a method of use, an applied pressure value is determined using a measurement from the pressure sensor and the reference pressure value, and the device is actuated, or opened, when the applied pressure meets a pre-determined condition, such as falling within a pressure window for certain time period. The invention allows natural changes in wellbore pressure to be accounted for when detecting a pressure actuation event.
    • 描述了诸如井筒塞之类的井下设备中的均压装置的电子致动系统。 该系统包括用于测量井眼中的压力的​​压力传感器,以及用于使用来自压力传感器的测量来设定参考压力值的装置。 在使用方法中,使用来自压力传感器和参考压力值的测量来确定所施加的压力值,并且当所施加的压力满足预定条件时,例如落入 压力窗口一段时间。 本发明允许在检测压力致动事件时考虑井眼压力的自然变化。