METHOD OF WATERFLOODING OIL FORMATION Russian patent published in 1997 - IPC

Abstract RU 2079641 C1

FIELD: oil producing industry. SUBSTANCE: the offered method includes injection into formation through injection well of working medium and water and withdrawal of oil from producing well. Prior to injection into formation of working medium injected into producing well is 0.05-2.0 % aqueous solution of powdery cross-linked polyacrylamide with water mineralization of up to 30 g/l. In this case, water mineralization should equal or exceed the existing mineralization. Working medium is used in form of aqueous solution of nonionic surfactant. EFFECT: higher efficiency. 1 tbl

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RU 2 079 641 C1

Authors

Kaushanskij D.A.

Dem'Janovskij V.B.

Gershtanskij O.S.

Palij A.O.

Molchan I.A.

Dates

1997-05-20Published

1992-09-21Filed