METHODS FOR MEASURING PROPERTIES OF MULTIPHASE OIL-WATER-GAS MIXTURES Russian patent published in 2018 - IPC G01F1/66 G01N29/24 

FIELD: measurement; test.

SUBSTANCE: invention can be used for continuous real-time measurements of the composition and other properties of individual phases of petroleum, water and gas mixtures during the oil production process. Essence of the invention is that methods for continuous real-time measurements of the composition and other properties of individual phases of petroleum, water and gas mixtures during the oil production process without requiring test separators, test lines, with associated valving and instrumentation, are described. Embodiments of the present invention direct ultrasonic sound transmission through a flowing multiphase fluid in three frequency ranges: low frequencies, gas bubble resonance frequencies, and high frequencies, wherein certain sound propagation measurements, including sound speed, sound attenuation and sound scattering, are made in one or more of the three separate frequency regions, from which the multiphase composition and other properties are extracted.

EFFECT: technical result: determining the multiphase composition and other properties without having to separate the multiphase fluid or the gas from the flowing stream.

6 cl, 20 dwg