FIELD: oil and gas extractive industry.
SUBSTANCE: method includes lowering feeding column into well with mounting of its shoe above ceiling of absorption zone. Along feeding column portions of working liquid are fed into well. As the latter alkali waste of kaprolaktam production or its solution is taken. Working liquid is alternated with portions of its thickener - sodium silicate; alternated by water buffers. Working liquid is pumped at consecutively decreasing concentration. Water buffers are pumped at consecutively decreasing volume. After output from feeding column of first portions of working liquid and its thickener, pumping is continued in cyclic mode with periodical stops of pumping from waves generation condition in such a way, that straight and reflected pressure waves interact in well shaft above absorption zone and below this zone.
EFFECT: higher efficiency.
6 cl
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