METHOD FOR MEASURING COMPOSITION OF TWO-PHASE SUBSTANCE IN THE STREAM Russian patent published in 2017 - IPC G01N22/00 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measuring equipment and can be used for high-precision measurement of physical properties of substances, which are components of two-phase substance, stationary or transported via pipeline. In particular, this method can be used for determining composition of substance in the stream of extracted and transported oil being, in fact, three-component two-phase substance (oil, gas, water). Method for measuring composition of two-phase substance in the stream is suggested, wherein the first measurement cycle is carried out, when the substance is exposed to electromagnetic waves of microwave frequency range and its dielectric permeability is determined according to exposure results using corresponding sensitive element in the form of microwave resonator and measuring its resonance frequency of electromagnetic oscillations, provided that two measurement cycles are performed successively, when the substance is exposed to electromagnetic waves of microwave frequency range in two frequency ranges, one of which corresponds to change of resonator volume by some fixed value, while another – to the change of this volume by some more fixed value, values of resonator resonance frequency are measured during these three measurement cycles, combined functional conversion of measured values of resonator resonance frequency is performed in said three frequency ranges, based on its results composition of two-phase substance is determined.

EFFECT: since measurement cycles are performed within very short time, controlled area of flow is practically unchanged during measurement cycles, which allows to ensure higher accuracy of measurement results and determine composition of three-component two-phase substance, in particular, oil-water-gas mixture.

1 cl, 1 dwg