Home – Home – Jornals – Chemistry for Sustainable Development 2019 number 1

The paper reports laboratory test results of the MEGA system developed at the Institute of Petroleum Chemistry of the Siberian Branch of the Russian Academy of Sciences. The composite was designed for enhanced oil recovery and restricted water inflow and had two gel-forming components, polymer and inorganic ones based on the aluminum salt – cellulose ether – carbamide – water system. The technology is intended to enhance oil recovery through increasing the coverage of the reservoir at flooding, steam-heat and cyclic steam stimulation and a restricted water flow in a wide temperature range (60–220 °C). As a consequence, the nanostructured “gel-in-gel” system with improved structural-mechanical properties is generated. Owing to gels formed in the reservoir water or steam breakthrough from injection wells into producing wells is restrained and filtration fluid flows in the oil reservoir are redistributed. That leads to a stabilized or reduced water cut of products of surrounding producing or steam-cycle wells and enhanced oil recovery.