FIELD: oil production, particularly oil and gas well development for hydrocarbon material.
SUBSTANCE: device comprises check valve, piston, receiving windows, depression chamber and valve with spring. The device is made as swabbing means and depression chamber connected one to another by threaded subs. The swabbing means consists of rope fastening unit, cylinder, hollow shaft, piston and valve with spring. Cylindrical valve is installed in lower part of depression chamber. The cylindrical valve is made as a sleeve with beveled lower end surface.
EFFECT: increased efficiency of well development due to impulsive action application to productive bed.
1 dwg
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