| 摘要 |
FIELD: oil production industry. SUBSTANCE: according to method, injected into oil bed are water solution of salt of multivalent metal, polymer-alkali solution, and water solution of surface-active material. Used as polymer-alkali solution are salts of alkali metals of organic acids, and polyacrylamide in ratio of 1:1. This method allows for higher gain of oil recovery factor, more efficient displacement of oil from nonuniform beds at late stage of development. EFFECT: high efficiency. 2 cl, 2 tblf |
