Patent ID: 6382032
Filing Date: 2002-05-07
Classification: G01F

Abstract:
An apparatus for the measurement of correction factors for determining the flow rate of a multiphase flow stream including a combination of liquid and gas fractions, said apparatus comprising:an orifice positioned within said multiphase flow stream for creating a pressure differential in said multiphase flow stream; means for measuring a reduction in a cross section of said multiphase flow stream due to the presence of liquids in said multiphase flow stream at a point upstream and proximate to said orifice; and means for measuring a pressure recovery value downstream of said orifice; wherein a measurement of said reduction in a cross section is used to correct a cross-sectional area value in a standard orifice meter flow rate equation, and a measurement of said pressure recovery value is used to correct a downstream pressure measurement in said standard orifice meter flow rate equation.