FIELD: mining.
SUBSTANCE: composition for shut-off of water in well consists of copolymer of sodium methacrylate and methacrylate acid, epoxy-composition and water, as epoxy-composition it contains glycidol derivatives 5.5-dimethylhydantoine at the following ratio of components, wt %: copolymer of sodium methacrylate and methacrylate acid 6-13, glycidol derivatives 5.5-dimethylhydantoine 1.6-7.0; water - the rest; also ratio of carboxylic groups of copolymer to epoxy groups of the said derivatives is from 1:1 to 1:0.5.
EFFECT: upgraded efficiency of water flow shut-off into well at increased permeability of oil.
1 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| WELL WATER PRODUCTION ISOLATION COMPOSITION | 2013 |
|
RU2526039C1 |
| COMPOSITION FOR ISOLATION OF WATER IN WELLS | 2012 |
|
RU2491315C1 |
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|
SU1176063A1 |
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|
RU2524738C1 |
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SU1596090A1 |
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|
SU765497A1 |
| MULTIFUNCTIONAL COMPOSITION FOR BOTTOMHOLE FORMATION ZONE TREATMENT AND ISOLATION OF WATER INFLUX TO WELL | 2014 |
|
RU2572254C1 |
| METHOD OF SHUTOFF OF WATER INFLOW INTO WELL | 1999 |
|
RU2158350C1 |
| COMPOSITION FOR INSULATION OF WATER INFLOW IN WELL | 1999 |
|
RU2157880C1 |
