RESERVOIR RECOVERY IMPROVEMENT METHOD

摘要

FIELD: oil and gas industry. ^ SUBSTANCE: in reservoir recovery improvement method involving pumping to formations of the compound containing clay and metal salt solution the thin clay solution with additive of magnesium sulphate is used as the above compound. ^ EFFECT: higher control efficiency of permeability of oil deposit, which allows to increase oil recovery factor. ^ 1 ex, 1 tbl, 3 dwg