FIELD: oil and gas industry.
SUBSTANCE: device includes tubing string, pump, valve and filter. As the valve, there used is valve with spring-loaded dished cone and guides. One guide is equipped with a spring, and the other one - with a stop. As the filter, there used is filter in the form of tube plugged with spherical plug on one side. Filter is provided with holes of radial conical shape. Larger diametre of cone of holes is directed inside the filter, holes have outer diametre of 40-60 mm and inner diametre of 80-100 mm at wall thickness of 5.5-9.0 mm.
EFFECT: reliable and effective operation of pumps in wells with high inclination angles.
3 dwg
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