Speaker
Description
Experimental measurements of electrical resistivity of synthetic rocks with confining pressures up to 1700 bars and 200°C were performed in a high pressure cell to evaluate how the correlation between size pore distribution and brine composition is [1]. The porous media were manufactured with homogeneous glass beads and were saturated with different salt concentrations brines. According to our results the electrical resistivity decrease in synthetic rocks with high porosity [2]. In this talk we explain in what conditions this electrochemical effect produce a decay in the resistivity and how is related to porous media. Our results indicate that the fluid phase is the principal responsible of the electrical resistivity. To prove this result we test on dry synthetic porous media and we compare how the wettability modifications on the solid phase modify the behavior when the rock is saturated. The aim of this work is to describe the electrical resistivity under reservoir conditions in synthetic porous media saturated with brine [3}. Our results can be useful to predict the behavior in some real rocks.
References
[1]Dante Hernandez-Diaz, Oscar Chavez, Alberto Beltran, Armando Garcia, Baltasar Mena, and R. Zenit, Experimental study of the effect of wettability on the relative permeability for air-water flow through porous media (Submitted 2017)
[2] Elsa de la Calleja, Roberto Zenit. Permeability in porous media under reservoir conditions (To be submitted)
[3] Ignacio Aguilar, Elsa de la Calleja, Roberto Zenit. Resistivity in porous media under reservoir conditions (To be submitted).
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