FIELD: technological processes.
SUBSTANCE: described is a composition for underground refining of heavy oil and intensification of oil recovery when pumping steam with an exposure temperature of 100–400 °C, which includes a nanosized catalyst with particle size of 60–155 nm based on mixed iron oxide Fe3O4, wherein composition additionally contains hydrogen-donor nefras C4 -155/205 solvent in ratio: catalyst Fe3O4: nefras C4 – 155/205 = 1–40 wt% : 99–60 wt%.
EFFECT: higher efficiency of refining and conversion of heavy oil due to combined use of nano-sized catalyst and hydrogen-donor solvent at steam-thermal action.
1 cl, 3 dwg, 2 ex
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