FIELD: mining.
SUBSTANCE: variants of the device for dual injection operation of the agent into well formations contain well mouth shutoff-bypass valves, tubing, packers with push and support anchor devices and a non-anchor packer that separate the annular space into areas communicating with formations and wellbore distribution chambers of ejecting formation agent. Wellbore chambers are equipped with remote mechanical system units (RMSU) for regulating flows and to meter flow rate of the injected working agent in the oil-bearing formations connected to the control station (CS) with geophysical cable passed through the shutoff-bypass valves and outside tubing installed in the well. A shank, blocked by a plug, is attached to the bottom wellbore chamber. Borehole chambers contain direct-flow channel and a channel for injecting agent into the formation, made in shells. The telemetry sensors, the flowmeter and electrically actuated control valve of the RMSU are installed in the agent injection channel. The telemetry sensors are installed in the injection channel in front/or behind the regulating valve seat, and the flowmeter is installed before to the bypass seat. The RMS unit is equipped with receiving and transmitting data transfer board from the telemetry and flowmeter sensors to the CS and control commands in reverse direction to electrical actuator of the regulating valve. The first version of the dual injection operation device is designed with direct flow injection agent channel, in which the shells are joined at the inlet to the intake manifold, and at the outlet - with the head in which the radial channel is provided. The manifold and the head are connected by casing forming in shells an eccentric cavity in which a board is placed and connected to geophysical cables passed through the manifold and the head, at the output of which, outside the zone of connection with the tubing, are plugs or sockets with contact nests for cable connectors for connecting the board with cable. Another version of the dual injection operation device is designed with reverse direction of injection agent channel, in which the shells are joined with head at the inlet provided with radial channel and at the outlet - with the exhaust manifold.
EFFECT: increased service life of downhole equipment.
6 cl, 5 dwg
