FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil and gas industry and can be used for repair and restoration works for attachment of poorly cemented rock and bottomhole support in sand wells. Method for bottomhole formation and isolation of brine water influx includes injection of homogeneous curable polymer composition based on 50.0-70.0 wt% carbamide resin, 0, 1, 0-7.0 wt% ammonium chloride 0.1-5.0 wt% sodium nitrite and water in poorly cemented sections of formation in an amount of 0.5 threshold volume of fastened rock. Composition is forced through one pore volume of hydrophobic liquid. Method includes maintenance for reaction and curing for a day. Curable polymer composition additionally contains 10.0-30.0 wt% of acetone formaldehyde resin and 5.0-20.0 wt% isopropanol.
EFFECT: technical result is wider scope of application of polymer composition and improved manufacturability.
1 cl, 3 tbl
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