FIELD: oil and gas industry, particularly downhole equipment to be installed in oil and gas reservoirs.
SUBSTANCE: device comprises hollow body with discharge channels threadedly connected to flow string. The body is provided with shell having orifices and pressure nut. Spring, valve and replaceable head are arranged in annular gap between the body and the shell. The spring is installed between upper and lower support washers. The valve is located between upper support washer and shell ledge. The replaceable head is secured to the shell by means of pressure nut. Sleeve with orifices is coaxially installed inside the body between body extensions so that the sleeve may be displaced by wire-line equipment tool to misalign or align sleeve and shell orifices with discharge body channels.
EFFECT: provision of fluid flow from underlying reservoir to overlaying one.
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