FIELD: oil and gas industry.
SUBSTANCE: device is mounted at the flow string and contains a hanger with two packers. In the hanger cavity there are at least two collars with a hermetical cup installed in collars; the cup is made with a thrust to a butt end protrusion of the hanger and this protrusion has longitudinal channels that form an annular space. In the cup wall at both sides of the lower collar there are two units with calibrated flow sections communicating the cup cavity with the upper well formation through the upper union, the annular space between collars and windows made in the hanger wall at one side and with the lower well formation through the lower union, the annular space below the collars and longitudinal channels of the butt end protrusion at the other side.
EFFECT: ensuring quick injection of the planned volumes of liquid to the well formations having different injectibility.
5 cl, 5 dwg
