Method and device for evaluating flow parameters and electric parameters of porous medium

A method for simultaneously evaluating measured electrical resistivity and relative permeability and capillary pressure of a porous medium, from at least one multi-flow type displacement experiment injecting a first injected fluid, into a sample of the medium initially saturated with a second displaced fluid, wherein the injection rate of the injected fluid is increased at least once after a step of stabilization of displaced fluid production volume, comprising:

• continuously measuring, as a function of time, differential pressure between two ends of the sample and an electrical resistivity of the sample;
• measuring for each stabilization step displaced fluid production volume;
• estimating a relation between the electrical resistivity of the sample and the displaced fluid production volume, from the resistivity measurements and the displaced fluid production volume values;
• establishing a continuous curve of the displaced fluid production volume as a function of time, from the relation;
• and
• estimating the relative permeability and the capillary pressure from the continuous differential pressure measurement and from the continuous curve by a numerical flow simulator.