FIELD: oil and gas industry.
SUBSTANCE: invention refers to oil-producing industry, specifically to method of selective water shut-off within producing oils well with using gelling compositions. According to method of selective water shut-off within producing oils well by pumping-in gelling composition produced from mixed polyacrylamide, carbamide, aluminium salts and water. Aluminium salt is aluminium pentahydroxocloride. The specified mixture is carried out while carbamide is introduced into polymer- colloidal complex produced from mixed aqueous solution of polyacrylamide and aqueous colloidal solution of aluminium pentahydroxocloride is ratio as follows, wt %: aluminium pentahydroxocloride 3-6, polyacrylamide 0.25-0.5, carbamide 7-14, water - the rest.
EFFECT: higher reservoir recovery.
2 dwg, 5 ex, 4 tbl
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