FIELD: oil and gas production.
SUBSTANCE: proposed method comprises injecting polymer gel system into bed via injection well, said system containing cross-linked polyarcylamide and clay suspension. Said system comprises the following components in wt %: cross-linked polyarcylamide produced on treating Separan 273 with hydrolysis factor of 20-30% and molecular weight of (20-30)·106 by ionising radiation dose of 5-20 kGy - 0.5-1%, and water with salinity not exceeding 0.2 wt % making the rest. Clay suspension is used in concentration of 0.5-5% in amount of 2-10% of polyarcylamide volume is injected in two slugs together with polyarcylamide.
EFFECT: higher efficiency of oil displacement.
1 ex, 1 tbl
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