METHOD FOR DEVELOPMENT OF OIL DEPOSITS Russian patent published in 1999 - IPC

Abstract RU 2127802 C1

FIELD: oil production industry. SUBSTANCE: method can be used for limiting water inflows to producing wells. According to method, following operations are performed: flooding, injection of water solution of polyacrylamide with alkali additive and salt solution through injection well. Oil recovery is effected through producing well. Used as alkali additive is water solution of sodium silicate. Salt solution contains water solution of mixture of calcium chloride and technical lignosulfonate. It is achieved due to redistribution of filtration flows in flooded beds and involving in development zones with high oil saturation. EFFECT: more complete extraction of oil from non-uniform beds. 1 cl, 4 tbl

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RU 2 127 802 C1

Authors

Verderevskij Ju.L.

Zalaliev M.I.

Golovko S.N.

Aref'Ev Ju.N.

Dates

1999-03-20—Published

1997-07-22—Filed