METHOD TO INSTALL BRIDGE FOR OIL RESERVOIR ISOLATION
FIELD: oil and gas well building, particularly to perform isolation works in cased wells. ^ SUBSTANCE: method involves depositing sand column, which closes perforation interval; injecting plugging composition above sand column. The plugging composition comprises aqueous dispersion including fresh wa...
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Main Authors | , , , , |
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Format | Patent |
Language | English Russian |
Published |
10.05.2006
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Subjects | |
Online Access | Get full text |
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Summary: | FIELD: oil and gas well building, particularly to perform isolation works in cased wells. ^ SUBSTANCE: method involves depositing sand column, which closes perforation interval; injecting plugging composition above sand column. The plugging composition comprises aqueous dispersion including fresh water and water-swelling polymeric powder based on water-absorbing polymer. The polymeric powder is taken in amount of 1.5 parts by weight per 100 parts of fresh water. Gel aggregates of water-swelling polymer are added in amount of not more than 5% by fresh water weight. ^ EFFECT: improved technology of bridge creation. ^ 1 tbl |
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Bibliography: | Application Number: RU20040121790 |