FIELD: construction.
SUBSTANCE: group of inventions relates to the field of construction of oil and gas and steam wells. Downhole device for controlling the flow of media contains a base pipe with a coupling, valve devices and a filter element are installed on the outer surface of the base pipe. Filter element is made wire-slot. Size of the slot holes between the turns of the wire of the filter element is different, the slot holes with the largest value are located at the weld ring and their value gradually decreases towards the mounting ring.
EFFECT: technical result is to increase oil production and increase well production.
4 cl, 1 dwg
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