FIELD: oil and gas industry.
SUBSTANCE: method includes serial pumping into well of buffer, blocking and pressing liquid, blocking liquid contains hydrocarbon base, acyclic acid, caustic soda and mineral filler with following relation of components in percents of mass: hydrocarbon base 41-72, acyclic acid 6.1-14.4, caustic soda 4.9-13.0, mineral filler the rest. Hydrocarbon base of blocking liquid is oil or oil processing products. As mineral filler blocking liquid has calcium carbonate with diameter of particles no less than 2 micrometers.
EFFECT: higher efficiency, simplified maintenance, simplified construction.
3 cl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
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|
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RU2406745C1 |
