METHOD FOR LEVELLING INJECTIVITY PROFILE OF INJECTION WELLS Russian patent published in 1998 - IPC

Abstract RU 2105140 C1

FIELD: oil production industry. SUBSTANCE: according to method, reduced cost of technological operations for levelling injectivity profiles of injection wells and improving their efficiency can be achieved by plugging high-permeable intervals of bed by means of injecting gel-formation reagents. Used as these reagents are ethyl ether of orthosilicate acid, muriatic acid, and glycol in following proportions: ethyl ether of orthosilicate acid 75% volume, glycol 15-20%, muriatic acid 10-8%. EFFECT: higher efficiency. 1 tbl

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RU 2 105 140 C1

Authors

Koshtorev N.I.

Dates

1998-02-20—Published

1995-10-06—Filed