IOR-14 INFLUENCE OF COLLECTOR’S IRREVERSIBLE DEFORMATION ON OIL RECOVERY N.A. CHEREMISIN V.P. SONICH and P.A. EFIMOV Abstract 1 The rocks of hydrocarbon deposits consisting of granular reservoirs and occurring on their historical maximum depth are subject to an additional stress at a reservoir pressure drop during their development. This additional stress leads to not only the elastic but also to the plastic deformation of rocks. Based on the laboratory and theoretical studies results it is shown that the irreversible deformation has a considerable influence on the deposit performance changing not only reservoir properties and a ratio of the fluids saturating


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