| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention relates to oil and gas industry. The composition for regulating permeability of an inhomogeneous oil formation in form of an aqueous suspension of metal salts contains the following, g/l: calcium carbonate 90-140, calcium hydroxide 10-150, magnesium hydroxide 5-10.5, calcium sulphate 16-40.6, sodium chloride 8-300, sodium hydroxide 9-14.2, calcium chloride 12.0-14.0, sodium sulphate 11.0-22.0, silicon dioxide 9.0-12.0, calcium oxide 1.4-7.4, sodium carbonate 2.5-15.0, sodium bicarbonate 3.0-29.0, magnesium carbonate 2.0-44.0, admixtures and water - the rest. The invention is developed in subclaims. ^ EFFECT: high efficiency of insulating washed out waterlogged collector zones, high well flow rate with possibility of using wastes and cheap intermediate products from soda production. ^ 2 cl, 2 ex, 1 dwg |
