FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil and gas industry, in particular to compositions for repair and insulation works in well. Composition for repair and insulation works in well contains 40–50 wt% of caustic magnesite, 25–30 wt% magnesium chloride, 25–30 wt%, 0.2–0.7 wt% over 100 % sodium silicofluoride and 0.1–1.0 wt% over 100 % nitrilotrimethylphosphonic acid.
EFFECT: improved manufacturability and efficiency of repair-insulation works in the well due to increased strength of magnesite stone and expanded range of hardening of composition based on magnesite.
1 cl, 1 tbl
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