G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 22/00 (2006.01) G01R 27/26 (2006.01)
Patent
CA 2662757
The invention relates to a method and device for measuring a multiple-phase fluid flowing through a pipe. The inventive method comprises the following steps in which: a fluid is illuminated using a first coaxial probe (32) placed in contact with the liquid phase (16) of the fluid and a first electromagnetic wave is emitted at a high frequency, the admittance at the interface between the first probe (32) and the fluid is measured, and the fractions of at least two constituents of the liquid phase (16) are calculated in order to obtain the effective permittivity (.epsilon.l) of said phase. Said method also includes the following steps in which: the fluid is illuminated using a second coaxial probe (50) and a second electromagnetic wave is emitted at a low frequency, the admittance at the interface between the second probe (50) and the liquid is measured, and the thickness (e) of the liquid is measured. The aforementioned calculation is performed on the basis of the calculated effective permittivity (.epsilon.l) and the admittance measured by the second probe (50).
Ce procédé comprend l'illumination du fluide au moyen d'une première sonde coaxiale (32) plaçée au contact de la phase liquide (16) du fluide avec une première onde électromagnétique émise à une haute fréquence, la mesure de l'admittance à l'interface entre la première sonde (32) et le fluide, et le calcul des fractions d'au moins deux constituants de la phase liquide (16) pour obtenir la permittivité effective (.epsilon.l) de cette phase. Il comprend l'illumination du fluide au moyen d'une deuxième sonde coaxiale (50) avec une deuxième onde électromagnétique émise à une basse fréquence, la mesure de l'admittance à l'interface entre la deuxième sonde (50) et le liquide, et le calcul de l'épaisseur (e) de liquide. Ce calcul est effectué sur la base de la permittivité effective (.epsilon.l) calculée, et de l'admittance mesurée par la deuxième sonde (50).
Badot Jean-Claude
Bondet de La Bernardie Emmanuel
David Pierre-Yves
Dubrunfaut Olivier
Fourrier-Lamer Arlette
Centre National de La Recherche Scientifique (c.n.r.s.)
Ecole Superieure D'electricite (supelec)
Geoservices Equipements
Robic
LandOfFree
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