Abstract: In frames of joint Russian-Japanese scientific-research project,the study of prospects of high-viscous oil reserves development in West Siberia using condensate flooding was carried out. Results of laboratory tests by mixing high-viscous oil with condensate allowed to recognize that at 25% adding of condensate,mix viscosity decreases almost 60 times in comparison with such of high-viscous oil. On the example of Russkoye field a possibility of tests on condensate injection is considered; necessary volumes of condensate and possible volumes of oil production are evaluated, veriants of production transpiortation shown.

Key words: West Siberia, Russkoye field, heavy oil reservior, condensate, development