FOAMING COMPOSITION FOR WELL COMPLETION Russian patent published in 2002 - IPC

Abstract RU 2193650 C1

FIELD: oil and gas producing industry, particularly, foaming compositions used for inducing fluid inflows from formation in well completion. SUBSTANCE: foaming composition contains, wt.%: hydroperite, 48-50; alkali metal bichromate, 2-5; alkali metal hydroxide, 0.1-0.3; surfactant, 0.3-0.7; lignosulfonate or hydrolyzed lignosulfonate or hydrolyzed polyacrylamide, 0.01-0.05; water, the balance. Surfactant is used in the form of sulfonol or OP-7 or their mixture. EFFECT: higher efficiency of well completion due to producing of high-expansion stable foams for short period for efficient removal of fluid and colmatage elements from well bores. 2 cl, 2 tbl

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RU 2 193 650 C1

Authors

Voropanov V.E.

Dates

2002-11-27Published

2001-08-28Filed