The article is devoted to the problems of determining and evaluating the filtration and capacitive properties of complex reservoir rocks using the results of core microtomography. Various processes were simulated directly for the three-dimensional pore space images of the samples (pore-scale modeling) to evaluate their effective properties and to obtain a more detailed understanding of the processes under study – one- and two-phase flow in porous media. The results of mathematical processing and interpretation of core computed microtomography data (μCT) allowed us to obtain relative permeabilities which can be used for three-dimensional reservoir simulation models. In comparison with experimental studies, the methods of computer microtomography together with pore-scale modeling make it possible to estimate filtration-capacitive properties with significantly lower costs and to conduct calculations for core samples, for which it is impossible to conduct experiments, as well as to rescale the results for the use in reservoir simulation models. Taking into account in a more complete way the microscale factors using the techniques of microtomography expands opportunities of reservoir simulation models for complex reservoirs, which have hard-to-recover reserves, and, as a consequence, allows more reasonable and less costly ways to solve the management problems of oil and gas field development.
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