FIELD: oil and gas industry.
SUBSTANCE: in insulation method of formation water inflow in the well and lining method of bottom-hole formation zone, which involves pumping of mixture of silicon-containing substance with carbamide-formaldehyde concentrate or products on its basis, as silicon-containing substance there used is organic silicon substance or their mixture, or non-organic silicon substance at the following component ratio, wt %: silicon-containing substance 60.0-95.0, carbamide-formaldehyde concentrate or products on its basis 5.0-40.0. Method has been developed in dependent claims.
EFFECT: increasing water inflow insulation degree owing to creating high filtration resistances in porous medium and improving oil-sweeping properties of pumped compositions, and eliminating sand ingress.
6 cl, 4 tbl
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