FIELD: chemistry.
SUBSTANCE: invention relates to oil-producing industry, in particular to compositions for isolation of water influx in production and injection wells. Composition for isolation of water in well includes copolymer of sodium metacrylate and methacrylic acid and structurant. As copolymer of sodium metacrylate and methacrylic acid reagent "Vitam" is used, with alumochloride solution being used as structurant, with the following ratio, vol.%: reagent "Vitam" 25-75, alumochloride solution 25-75. Additionally in composition used is water-cement mixture with water-cement ratio 0.5-0.8 in volume equal from 12 to 22% of the total volume of reagent "Vitam" and alumochloride solution.
EFFECT: increased efficiency of water influx limiting and reduction of content of water in oil.
2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| WELL WATER PRODUCTION ISOLATION COMPOSITION | 2013 |
|
RU2526039C1 |
| ISOLATION METHOD OF WELL TROUBLESOME ZONE WITH CARBONATE BASINS | 2012 |
|
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| FORMATION PERMEABILITY CONTROL METHOD | 2003 |
|
RU2262584C2 |
| METHOD OF TREATMENT OF BOTTOMHOLE FORMATION ZONE | 2014 |
|
RU2566344C1 |
| METHOD FOR ISOLATION OF BRINE WATER INFLOW TO WELL | 1995 |
|
RU2108454C1 |
| METHOD OF WATER SUPPRESSION IN HORIZONTAL WELL WITH WATERED CARBONATE BASINS | 2013 |
|
RU2519138C1 |
| METHOD FOR DEVELOPMENT OF OIL RESERVOIR | 1996 |
|
RU2086758C1 |
| METHOD FOR REPAIR AND INSULATION WORKS IN WELL | 2015 |
|
RU2601888C1 |
| METHOD OF WATER INFLOW LIMITATION IN FLOODED CARBONE RESERVOIRS | 2016 |
|
RU2619778C1 |
| PROCEDURE FOR ISOLATION OF WATER AND FOR INTENSIFICATION OF OIL INTAKE IN CARBONATE RESERVOIRS | 2010 |
|
RU2408780C1 |
