FIELD: oil-and-gas industry.
SUBSTANCE: well absorption zone sealing method includes viscoelastic composition and cement slurry gradual pumping into the well, at that pump into the well absorption zone a reagent concentrated water solution, which able to create a three dimension structure in the reservoir, and then the cement slurry, solving with the reagent thin water solution. Use following reagents for the three dimension structure creation in the reservoir: chloride aluminium, carbamide, urotropin, at the following components ratio wt %: chloride aluminium - 4-8, carbamide - 5-30, urotropin - 0-6, the rest is water. As cement grouting liquid used 3-20 times reagent water solution.
EFFECT: well absorption zones sealing efficiency increase.
2 cl, 3 tbl
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