FLOW METER USING AN EXPANDED TUBE SECTION AND SENSITIVE DIFFERENTIAL PRESSURE MEASUREMENT

摘要

A method and apparatus for measuring the flow rate of a fluid within tubi ng disposed within a downhole wellbore. The present invention provides an inver se Venturi meter inserted within tubing with an enlarged inner diameter portio n. Pressure differential is measured between the enlarged inner diameter portio n and another portion of the inverse Venturi meter. Flow rate is determined from t he pressure differential and the density of the fluid.