COMPOSITION FOR TREATING BOTTOM ZONE OF OIL STRATUM AND/OR INCREASING OIL RECOVERY OF STRATUM Russian patent published in 1999 - IPC

Abstract RU 2135754 C1

FIELD: oil and gas production. SUBSTANCE: emulsion contains 2.0-20.0% of special-type emulsifying agent, 3.0-16.0% of oxyethylenated isononylphenols with oxyethylenation degree 4-12, and hydrocarbon solvent - the balance. EFFECT: increased viscosity and stability of emulsions formed by mixing with water in washed zones, leveled profile of bottom zone injectivity, increased formation coverage, and reduced oil viscosity. 2 tbl

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RU 2 135 754 C1

Authors

Sobanova O.B.

Fridman G.B.

Ljubimtseva O.G.

Bragina N.N.

Dates

1999-08-27—Published

1997-10-17—Filed