METHOD FOR DEVELOPMENT OF OIL DEPOSIT BY FLOODING
FIELD: oil production industry. SUBSTANCE: this can be used for increasing oil recovery from beds by regulation of permeability of water-flowing passages. According to method, injected are alkali solution of sludge-lignin and water solution of surface-active substance in following proportions: sludg...
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Main Authors | , , , , , , |
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Format | Patent |
Language | English |
Published |
10.03.1999
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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Summary: | FIELD: oil production industry. SUBSTANCE: this can be used for increasing oil recovery from beds by regulation of permeability of water-flowing passages. According to method, injected are alkali solution of sludge-lignin and water solution of surface-active substance in following proportions: sludge-lignin - alkali solution - surface active substance: from 1:1:0.5 to 1:1:5. Delivery of water solution of surface-active substance is carried out simultaneously with or after injection of alkali solution of sludge-lignin. Application of aforesaid method leads to increased degree of displacing oil from low-permeable zones of bed. EFFECT: higher efficiency. 2 tbl, 2 ex |
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Bibliography: | Application Number: RU19960120426 |