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    • 4. 发明授权
    • Methods and apparatus for measuring return flow in a well
    • 用于测量井中回流的方法和装置
    • US08517096B2
    • 2013-08-27
    • US12936995
    • 2009-04-02
    • Pierre VigneauxDominique Guillot
    • Pierre VigneauxDominique Guillot
    • E21B47/12
    • E21B47/102E21B47/123G01B11/026
    • An apparatus for use in a wellbore, made of a casing and an annulus with a fluid within, comprises a reel or wound optic fiber line fixed to an object within the casing, and a light transmitter/receiver device that is able to generate a signal through the optic fiber line and to measure a change of said signal. The optic fiber line is (a) on a first position fixed to a reference point linked to the light transmitter/receiver device, and is (b) on a second position unwound from the reel. The light transmitter/receiver device is able to measure the change of said signal when occurring at the second position, and the apparatus has a system able to measure the flow rate of the fluid exiting the annulus at the surface.
    • 用于由壳体和具有流体的环形孔制成的井眼的装置包括固定到壳体内的物体的卷轴或卷绕的光纤线路,以及能够产生信号的光发射器/接收器装置 通过光纤线路并测量所述信号的变化。 光纤线路(a)在固定到与光发射机/接收机设备相连的参考点的第一位置上,并且(b)在从卷轴展开的第二位置。 光发射器/接收器装置能够在第二位置发生时测量所述信号的变化,并且该装置具有能够测量离开表面的环形空间的流体的流量的系统。