FIELD: oil producing industry; applicable in increase of oil recovery from formations in flooded wells by water flooding. SUBSTANCE: compound for water shutoff in wells and increase of oil recovery has salts of aluminium, carbamide, polyacrylamide and water with the following amounts of components, mas. %: polyacrylamide 0.5-2.5; aluminium chloride 0.4-17.0; carbamide 1.5-30; the balance, water. EFFECT: higher oil recovery and water shutoff in wells due to increased stability of gel formed in formation. 1 tbl
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Authors
Dates
1997-03-27—Published
1994-10-18—Filed