ApplicationNo. 817829 filed on 07/08/1997
US Classes:73/861.04Of selected fluid mixture component
ExaminersPrimary: Dombroske, George M.
Assistant: Thompson, Jewel V.
Attorney, Agent or Firm
International ClassG01F 001/74
Foreign Application Priority Data1994-11-09 NO
AbstractA method for measuring the flow rate in a fluid flow, particularly a two-phase flow comprising oil, water and gas from an offshore well, in which a temporary transitory shut-off of the fluid flow by means of a valve is performed, and the fluid pressure at a location immediately upstream of the valve is recorded from a moment of time when the valve starts closing to a selected moment of time after the valve is fully closed. Subsequently, the valve is opened to reestablish the fluid flow, and the fluid mass flux G is determined as a function of fluid density, friction factor, pipe diameter, selected moment of time after closure of the valve, friction loss recorded at the selected moment after closure and a pressure surge pressure.