Method and device for evaluating flowing and electric...

G - Physics – 01 – N

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G01N 15/08 (2006.01) G01N 27/04 (2006.01)

Patent

CA 2605741

The invention relates to a method and device for simultaneously and with the same equipment evaluating the electric resistivity and flowing parameters of a porous medium according to experimental measurements obtainable from at least one multi-flow displacement experiment. The inventive method consists in continuously measuring over time a differential pressure between two ends of said sample, the electric resistivity thereof, at least two values of a displaced fluid production volume for each stabilisation step and in subsequently calculating the production volume continuous curve which is used for evaluating flowing parameters with the aid of a digital flow simulator. Said invention can be used, for example, in oil field operation.

Méthode et dispositif pour évaluer dans le même temps et avec le même appareillage, la résistivité électrique et des paramètres d'écoulement d'un milieu poreux, à partir de mesures expérimentales issues d'au moins une expérience de déplacement de type multi-débits. On mesure de façon continue en fonction du temps la pression différentielle entre deux extrémités dudit échantillon, la résistivité électrique dudit échantillon, et pour chaque palier de stabilisation on mesure également au moins deux valeurs de volume de production du fluide déplacé. On en déduit ensuite une courbe continue de volume de production du fluide déplacé en fonction du temps à partir de laquelle on estime des paramètres d'écoulements à l'aide d'un simulateur numérique d'écoulement ; Application à l'exploitation de gisements pétroliers par exemple.

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