FIELD: gas industry.
SUBSTANCE: invention relates to compositions used to isolate water inflows in gas and gas condensate wells, including those with a sub-horizontal well bore, with terrigenous and carbonate reservoirs. A gel-forming composition is used for isolating water inflows in gas wells, which comprises sodium silicate, a gelling agent, a water-soluble polymer and water, and at the same time further comprises an ammonium salt of paramolybdic acid – ammonium paramolybdate, silicate polyecosil-N reagent as sodium silicate, nitrilotrimethylphosphonic acid (NTP) as a gelling agent, polycell-9C polymer reagent as a water-soluble polymer, in the following ratio, wt.%: polyecosil-N, 5.9-7.5; NTF 6.7-8.4; polycell-9С 0.4-0.5; ammonium paramolybdate 0.2-0.4; the rest is water.
EFFECT: increasing the efficiency of isolation of water inflows.
1 cl, 1 tbl, 6 ex
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