FIELD: oil and gas extracting industry.
SUBSTANCE: invention relates to compositions used for limiting water-inflows and over-column bed overcurrents in drilling and major overhaul of oil and gaseous holes. The proposed composition used in isolating water-flows and over-column oil and gas overcurrents comprises product of interaction of water-soluble naphthenic acids or their salts in aqueous medium and water-soluble bi- and/or trivalent metal hydroxides or chlorides taken in equimole ratios as a binding agent, and hydrocarbon liquid comprising at least 6 carbon atoms and highly fluorinated surface-active substance additionally as a structurizing-stabilizing agent wherein these components are taken in the following ratio, wt.-%: the indicated binding agent, 20-70; the indicated surface-active substance, 0-2, and the indicated structurizing-stabilizing agent, the balance. Invention provides decreasing duration and labor intensity in preparing the composition, improving its adhesion and surface-active properties and expanding assortment of thermostable insulating compositions.
EFFECT: improved and valuable technical properties of composition.
1 tbl, 5 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF RESTRICTION OF BOTTOM WATER AND ANNULUS OVERFLOWS IN PRODUCTION WELLS | 2006 |
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| SELECTIVE COMPOSITION FOR REPAIR AND ISOLATION IN OIL AND GAS WELLS | 2013 |
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| METHOD TO ELIMINATE INTERSTRING AND STRING CROSSFLOWS OF GAS IN WELLS ( VARIANTS ) | 2001 |
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| ISOLATION METHOD OF WATER INFLUX TO WELL | 2010 |
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RU2425957C1 |
| POWDER COMPOSITION FOR LIMITING WATER INFLOWS INTO WELLS AND METHOD FOR APPLICATION THEREOF | 2018 |
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RU2712902C2 |
