FIELD: mining engineering, oil industry.
SUBSTANCE: invention refers to oil industry, specifically to well inflow areas isolation. Technological result is increase of inflow isolation efficiency. Well inflow areas isolation technique including polymer pumping of well, polymer gelatinization curing and further strengthening with cement suspension implies using of polymer composition of viscosity not more 15-20 MPa. Polymer composition is pumped between oil separation layers and further driven to critical area by oil pressure 0.6-0.8 MPa for pore space treatment, curing in specified area is carried out as formation pressure is equal to well pressure.
EFFECT: increase of inflow isolation efficiency.
1 ex
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