FIELD: physics.
SUBSTANCE: at step (a) a Venturi tube is used to create conditions for generating a stream with symmetrical gas concentration in a stream of a multi-component mixture. At step (b) density distribution and/or permittivity on the cross-section of the pipe is determined in the said symmetrical stream. At step (c) a function which describes radial distribution of density and/or permittivity is determined. At step (d), the Venturi tube is used to determine the velocity of the multi-component mixture. At step (e), temperature and pressure are measured. Based on information obtained at steps (a), (b), (d) and (e), and a mathematical function which describes radial distribution of density and/or radial distribution of permittivity, as well as knowledge of density and/or permittivity of components of the fluid mixture, volumetric and/or mass flow of gas and liquid components of the mixture is determined.
EFFECT: high accuracy of measuring fractions and flow rate of oil, water and gas in a multiphase mixture in any flow mode while enabling use of simple tomographic methods.
30 cl, 13 dwg
