The results of laboratory and field tests of physicochemical technologies for enhanced oil recovery are presented for oil fields developed by flooding and thermal-steam stimulation. These technologies can be used in extreme climatic conditions of the Arctic. A promising concept has been developed using reservoir energy or that of the injected heat carrier to generate oil-displacing fluid, gels and sols in situ. Physicochemical bases for EOR have been developed involving chemical intelligent systems: gel-forming and oil-displacing systems based on surfactants self-regulating a complex of properties, optimal for oil displacement, in a reservoir for a long time. Pilot tests of EOR technologies were successfully carried out in oil fields of Russia, China, Vietnam, Oman and Germany using gel-forming systems and surfactant compositions developed at IPC SB RAS. Such systems are commercially produced in Russia and China. The results of pilot tests and commercial application of the technologies for enhanced oil recovery and water shutoff are presented for oil fields with difficult-to-recover reserves including deposits of high-viscosity oils. For effective development of difficult-to-recover oil reserves and further increase in oil production it seems promising large-scale use of advanced complex technologies for enhanced oil recovery combining basic reservoir treatment by water or steam injections with physicochemical methods increasing reservoir sweep and oil-displacement factor at simultaneous intensification of the development. The achieved scientific and technical level of the works enables to create new EOR technologies for hydrocarbon deposits located in the Arctic shelf of Russia, in the Urals and Siberia, as well as reagents adaptable to works in the extreme climatic conditions.

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