FIELD: chemistry.
SUBSTANCE: invention relates to oil extraction industry and can be used for increasing oil production by preventing inflow of water to production wells and reducing permeability of waterlogged pay zones during water-flooding. The gel forming composition for water sealing a well contains the following in wt %: 50% aqueous solution of sodium silicate 7.6-9.4; acetic acid 1.0-1.4; polyatomic alcohol 0.1-18.9; water - the rest.
EFFECT: increased effectiveness of the composition, increased oil output.
1 dwg, 2 tbl
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