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    Wireless passive pressure sensor for downhole annulus monitoring
    1.
    发明授权
    Wireless passive pressure sensor for downhole annulus monitoring 有权

    公开(公告)号：US09828848B2

    公开(公告)日：2017-11-28

    申请号：US14510197

    申请日：2014-10-09

    申请人： Steve James Coulston

    发明人： Steve James Coulston

    IPC分类号： G01V3/00 ,  E21B47/06 ,  E21B47/12 ,  G01L19/00

    CPC分类号： E21B47/06 ,  E21B47/12 ,  G01L9/105 ,  G01L19/00 ,  G01L19/0092

    摘要： A downhole pressure sensor to measure absolute pressure in an annulus and a method of measuring absolute pressure in an annulus are described. The sensor includes an inductor including primary windings and secondary windings, and a capacitor coupled to the secondary windings and disposed in the annulus, at least one of the plates of the capacitor being flexible. The sensor also includes a controller coupled to the primary windings, the controller introducing an input signal to the primary windings and receive a return signal from the primary windings, the return signal resulting from the input signal being transferred through the secondary windings to the capacitor and back through the secondary windings to the primary windings. The controller determines the absolute pressure from the return signal.

    WIRELESS PASSIVE PRESSURE SENSOR FOR DOWNHOLE ANNULUS MONITORING
    3.
    发明申请
    WIRELESS PASSIVE PRESSURE SENSOR FOR DOWNHOLE ANNULUS MONITORING 有权
    无源无源压力传感器，用于井下监测

    公开(公告)号：US20160102545A1

    公开(公告)日：2016-04-14

    申请号：US14510197

    申请日：2014-10-09

    申请人： Steve James Coulston

    发明人： Steve James Coulston

    IPC分类号： E21B47/06 ,  E21B47/12

    CPC分类号： E21B47/06 ,  E21B47/12 ,  G01L9/105 ,  G01L19/00 ,  G01L19/0092

    摘要： A downhole pressure sensor to measure absolute pressure in an annulus and a method of measuring absolute pressure in an annulus are described. The sensor includes an inductor including primary windings and secondary windings, and a capacitor coupled to the secondary windings and disposed in the annulus, at least one of the plates of the capacitor being flexible. The sensor also includes a controller coupled to the primary windings, the controller introducing an input signal to the primary windings and receive a return signal from the primary windings, the return signal resulting from the input signal being transferred through the secondary windings to the capacitor and back through the secondary windings to the primary windings. The controller determines the absolute pressure from the return signal.

    摘要翻译： 描述了测量环形空间中的绝对压力的井下压力传感器以及测量环形空间中绝对压力的方法。 传感器包括一个包括初级绕组和次级绕组的电感器，以及耦合到次级绕组并设置在环形空间中的电容器，电容器的至少一个板是柔性的。 传感器还包括耦合到初级绕组的控制器，控制器向初级绕组引入输入信号并接收来自初级绕组的返回信号，由输入信号产生的返回信号通过次级绕组传送到电容器， 通过次级绕组回到初级绕组。 控制器根据返回信号确定绝对压力。