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Application

97121318/03, 1997-12-05

(24)

Start date

1997-12-05

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Actual filing date

1997-12-05

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Published

1999-12-27

(72)

Inventor

Selimov F.A.Telin A.G.Ovsjukov A.V.Fakhretdinov R.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 2143551 C1

FIELD: oil producing industry; applicable in operations involved in increase of formation oil recovery by water-flooding and in water shutoff to oil wells. SUBSTANCE: composition contains, wt.%: aluminium chloride 20-30; carbamide 35-55; sodium zeolite 0.1-1.0; the balance, water. Use of claimed composition provides for lowering of water permeability after formation of gel by a factor of approximately 8.0-8.5. EFFECT: extended temperature range of composition application with simultaneous reduction of time taken for gel formation. 3 cl

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RU 2 143 551 C1

Authors

Selimov F.A.

Telin A.G.

Ovsjukov A.V.

Fakhretdinov R.N.

Khajredinov N.Sh.

Kononova T.G.

Ismagilov T.A.

Dates

1999-12-27—Published

1997-12-05—Filed

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