FIELD: oil and gas industry.
SUBSTANCE: invention is referred to an oil-and-gas industry. The cleanout device makes hydrowave impact by means of hydropulsator on a column of washing liquid inside the well strainer; the device contains computer, hydropulsator, washing liquid return pipeline connected to gap between casing string and tubing string. Hydropulsator is installed at washing liquid feed pipeline inside tubing string; it can alternate ripple frequency for automatic tuning of resonance frequency. Frequency sensors and oscillation amplitude sensors connected to computer by electric coupling at washing liquid feed pipeline. Hydropulsator can vary amplitude of oscillations by use of bypass channel with tap parallel to hydropulsator.
EFFECT: increasing cleanout efficiency and speed.
2 cl, 5 dwg
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