FIELD: oil industry.
SUBSTANCE: group of inventions relates to equipment used in operations performed in underground wells and, in particular, to control over influx of formation fluids and forced discharge fluids with resistance depending on flow direction. System of downhole fluid flow rate control is provided to control flow rate depending on direction. When passing fluid flow through flow control component in first direction is provided with first pressure drop. When passing flow injected fluid medium through flow rate control component in second direction is provided with a second pressure drop. First pressure difference differs from second pressure drop. Capacity to control flow rate control component is provided, including vortex chamber to displace fluid flow in tangential direction and flow injected fluid initially in radial direction.
EFFECT: technical result is increased efficiency of control.
12 cl, 6 dwg
