FIELD: oil and gas industry.
SUBSTANCE: compound contains 20-25 wt % of bentonite clay, 55-60 wt % of hydrocarbon fraction, 5-10 wt % of sodium carbonate and 5-15 wt % of Portland cement.
EFFECT: improving efficiency in removal of fluids crossflow behind production strings in oil and gas wells and increasing duration of their life between overhauls.
2 ex
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