FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil industry and can be used in operation of well with large inclination of production string. Proposed device comprises tubing, pump, valve and filter. According to the invention, the valve used is a valve with an urged shut-off element in the form of radially located balls, and filter used is filter in form of pipe, plugged with spherical plug on one side, with alternatively arranged holes of radial conical shape of smaller and larger diameter, facing inside filter.
EFFECT: technical result consists in improvement of operating reliability of well with high inclination angle.
1 cl, 3 dwg
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