FIELD: oil and gas production.
SUBSTANCE: procedure for repair-isolation operations in well consists in pumping grouting mortar into isolated interval. Grouting mortar contains semi-hydrate of calcium and oil at ratio of weight parts 2:1. Further, there is pumped cleaning fluid corresponding to 0.05-0.2% of water solution of non-ionogenic surface active substance. Also, grouting mortar and cleaning fluid are pumped in equal by volume portions. The invention is developed in dependent points of formula.
EFFECT: raised efficiency of repair-isolating operations in well.
3 cl, 1 tbl
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