COMPOUND FOR WATER SHUTOFF IN WELLS AND INCREASE OF OIL RECOVERY Russian patent published in 1997 - IPC

Abstract RU 2076202 C1

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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RU 2 076 202 C1

Authors

Altunina L.K.

Krylova O.A.

Kuvshinov V.A.

Manzhaj V.N.

Shirshov A.N.

Dates

1997-03-27Published

1994-10-18Filed