METHOD FOR TREATMENT OF BOTTOM-HOLE FORMATION ZONE Russian patent published in 1995 - IPC

Abstract RU 2042807 C1

FIELD: oil producing industry. SUBSTANCE: method for treatment of bottom-hole formation zone includes successive injection into formation of spacer fluid based on hydrocarbons in form of casing-head stabilized gasoline and isopropyl alcohol in ratio of (1-3):1, inhibited aqueous solution of hydrochloric acid, or mud acid in mixture with alcohol-containing product in ratio from 1:1 to 1:2. Then, the second spacer fluid is injected in form of stabilized casing-head gasoline presenting mixture of saturated hydrocarbons C3+more. EFFECT: higher efficiency. 7 tbl

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RU 2 042 807 C1

Authors

Esipenko Alla Illarionovna

Safin Stanislav Gazizovich

Petrov Nikolaj Aleksandrovich

Dates

1995-08-27Published

1993-05-11Filed