DELAYED-ACTION ACID AND GELLING COMPOSITION
FIELD: oil producing industry, particularly, compositions based on hydrochloric acid for treatment of carbonate and carbonate-containing formations of oil deposits. SUBSTANCE: delayed-action acid and gelling composition has aluminosilicate, lignosulfonate and hydrochloric acid with the following rat...
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Main Authors | , , , |
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Format | Patent |
Language | English Russian |
Published |
10.12.2002
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | FIELD: oil producing industry, particularly, compositions based on hydrochloric acid for treatment of carbonate and carbonate-containing formations of oil deposits. SUBSTANCE: delayed-action acid and gelling composition has aluminosilicate, lignosulfonate and hydrochloric acid with the following ratio of components, mas.%: aluminosilicate (in terms of dry matter), 0.5-10.0; lignosulfonate (in terms of dry matter), 0.5-10.0; hydrochloric acid, the balance. Used in composition may be natural or synthetic aluminosilicate, including process wastes; may be also used nepheline, synthetic zeolites, wastes of zeolite production - zeolite slimes, high-alumina cement, etc. EFFECT: higher efficiency of treatment of carbonate reservoirs. 5 tbl, 5 ex |
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Bibliography: | Application Number: RU20020107183 |