FIELD: oil and gas producing industry. SUBSTANCE: method includes mixing of cement with mineral additives, injection of obtained grouting mixture into well, and its forcing beyond string. Mineral additives are used in form of silicate and aluminosilicate microspheres. Preliminarily determined in interval of leaking is well injectivity, and in case of well injectivity exceeding 250 cu. m/day, cement is mixed with said additives, In forcing of grouting mixture in well, pressure is built-up at depth of leaking which exceeds pressure of microsphere crumpling. EFFECT: higher efficiency and reduced terms of repair-isolating work. 1 dwg, 1 ex
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