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2 093 670

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C1

(51)

IPC

(21) (22)

Application

95100225/03, 1995-01-10

(22)

Actual filing date

1995-01-10

(45)

Published

1997-10-20

(72)

Inventor

Ganiev R.R.Khlebnikov V.N.Andreeva A.A.Bikbova A.A.Jakovleva V.S.

(73)

Holder

Nauchno-Issledovatel'Skij Institut

METHOD OF IMPROVING EFFICIENCY OF OIL DISPLACEMENT BY NON-IONOGENIC OIL-SOLUBLE SURFACE-ACTIVE MATERIALS Russian patent published in 1997 - IPC

Abstract RU 2093670 C1

FIELD: oil production industry. SUBSTANCE: this relates to oil displacement by surface-active materials and combinations on their base. According to method, introduced into solution of surface-active material for increasing oil extraction are additives of high-mineralized natural and/or artificial water (brine) including effluent from oil deposit with degree of mineralization not less than 100 g/dm3 or density not below 1.10 kg/dm3. Method is suitable for solutions of oxiethylated alkylphenols with degree of oxiethylation equal to 4-12 and for compositions on their base. Method can be used in technology of increasing oil extraction at middle and late stages of developing oil deposits. EFFECT: high efficiency. 4 tbl

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RU 2 093 670 C1

Authors

Ganiev R.R.

Khlebnikov V.N.

Andreeva A.A.

Bikbova A.A.

Jakovleva V.S.

Dates

1997-10-20—Published

1995-01-10—Filed

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