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2 143 550

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IPC

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Application

97121317/03, 1997-12-05

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Start date

1997-12-05

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Actual filing date

1997-12-05

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Published

1999-12-27

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Inventor

Selimov F.A.Ovsjukov A.V.Telin A.G.Fakhretdinov R.N.Maksimova T.N.Khajredinov N.Sh.Kononova T.G.Ismagilov T.A.

(73)

Holder

Nauchno-Issledovatel'Skij Institut

COMPOSITION FOR INCREASE OF OIL RECOVERY Russian patent published in 1999 - IPC

Abstract RU 2143550 C1

FIELD: oil producing industry; applicable in operations involved in increase of oil recovery from carbonate formations by water flooding and in shutoff of water inflows. SUBSTANCE: composition contains, wt.%: aluminium chloride 20-30; carbamide 30-55; sulfuric acid 0.1-10.0; the balance, water. With combined use of said components, claimed composition provides for lowering of water permeability after gel formation by, approximately, a factor of 9.2-9.5. EFFECT: extended temperature range of application of composition for carbonate formations with simultaneous reduction of gel formation time. 3 cl, 3 tbl

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RU 2 143 550 C1

Authors

Selimov F.A.

Ovsjukov A.V.

Telin A.G.

Fakhretdinov R.N.

Maksimova T.N.

Khajredinov N.Sh.

Kononova T.G.

Ismagilov T.A.

Dates

1999-12-27—Published

1997-12-05—Filed