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    • 4. 发明授权
    • Autonomous fluid control device having a movable valve plate for downhole fluid selection
    • 具有用于井下流体选择的可动阀板的自主流体控制装置
    • US08991506B2
    • 2015-03-31
    • US13640542
    • 2011-10-31
    • Jean-Marc LopezLiang Zhao
    • Jean-Marc LopezLiang Zhao
    • E21B34/08E21B43/12F16K15/03E21B34/00
    • E21B34/08E21B43/12E21B2034/005F16K15/03
    • An apparatus and method are described for autonomously controlling flow of fluid in a subterranean well, where fluid flow is controlled based on a fluid characteristic, such as viscosity or density, which changes over time. Fluid flows into a vortex assembly where a centrifugal force is imparted to the fluid. A less viscous fluid will have a relatively greater velocity and centrifugal force than a more viscous fluid. The fluid exits the vortex chamber by both a vortex outlet and a peripheral outlet. An autonomous valve element moves between an open position, in which fluid flows freely through the peripheral outlet, and a closed position, in which fluid flow through the peripheral outlet is restricted. The valve element is moved by the centrifugal force of the fluid, such that a fluid having a higher centrifugal force moves the valve element to the closed position, thereby reducing the total fluid flow through the vortex assembly.
    • 描述了一种用于自主控制地下井中的流体流动的装置和方法,其中基于随时间变化的流体特性(例如粘度或密度)来控制流体流动。 流体流入涡流组件,其中离心力被施加到流体。 较粘稠的流体将具有比较粘稠的流体相对更大的速度和离心力。 流体通过涡流出口和外围出口都离开涡流室。 自主阀元件在流体通过周边出口自由流动的打开位置和闭合位置之间移动,在该位置限制流过外围出口的流体流动。 阀元件通过流体的离心力移动,使得具有较高离心力的流体将阀元件移动到关闭位置,从而减少通过涡流组件的总流体流量。