FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil and gas industry and can be used for prevention of downhole equipment falling on well bottom. Proposed plant comprises in-series connected drain valve, return valve, ECP, column disconnector, anti-space anchor and funnel. At that, injection valve and sludge trap are installed between the column disconnector and the anchor anti-grid. Pumping valve comprises holes arranged at angle of 45° relative to longitudinal axis and directed downwards. Sludge trap comprises rubber cup arranged above sludge trap container.
EFFECT: technical result consists in improvement of reliability of a downhole pumping unit by preventing antipollution anchor pouring with mechanical impurities.
1 cl, 2 dwg
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