TY JOUR TI The study on the effect of combined injection of steam and hydrocarbon solvents on the displacement coefficient of extra-viscous oil from the physical model of the Yarega field KW ultra-viscous oil KW hydrocarbon solvent KW oil recovery coefficient KW bulk model of the oil-bearing formation JO Proceedings of the Komi Science Centre of the Ural Division of the Russian Academy of Sciences AU Savel'ev, D.Y. AU Demchenko, N.P. PY 2026 IS 0 PB FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"