FIELD: chemistry.
SUBSTANCE: dry mixture for preparing a composition for selective waterproofing in gas formation contains, wt %: pine rosin - 3.2-6.6, silicone hydrophobizer "Penta-811" - 8.8-26.7, sodium powder glass - 66.7-88.0.
EFFECT: increasing the proofing capacity of the composition by ensuring the selectivity of the composition for selective waterproofing in the water-saturated intervals of the formation, while increasing the depth of penetration and increasing the ability of the composition to be adsorbed by the porous rock medium.
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