Patent ID: 8960016
Filing Date: 2015-02-24
Classification: G01F

Abstract:
1. A method for determining the flow rates of a fluid comprising a multi-component mixture of a gas and at least one liquid in a pipe, the method comprising the following steps: a. determining the permittivity of the multi-component mixture based on an electromagnetic measurement, b. determining the density of the multi-component mixture, c. obtaining the temperature and pressure, d. using a density and a permittivity of each component of the fluid mixture, and the result from the above steps a-c, the water fraction of the multi-component mixture is calculated, determining the liquid fraction and flow rates of the multi-component mixture by: e. calculating a statistical parameter related to the electromagnetic measurement, f. calculating the liquid fraction based on the statistical parameter from step e and the calculated water fraction from step d using an empirical derived curve, g. measuring the velocity of the multi-component mixture is based on measurement of pressure drop across a restriction in the pipe, and h. based on steps a-g, the flow rate of the individual components of the multi-component mixture is calculated.