FIELD: oil and gas industry.
SUBSTANCE: device includes a hydraulic piston pump connected through a plunger to a drive rod arranged in a tubing string connected to a cylinder of the hydraulic piston pump by means of an upper adapter, and a centrifugal submersible pump connected to a power cable of the drive through the cable sealing assembly, as well as a packer disconnecting upper and lower formations of the well. The device includes a sleeve restricted on ends with upper and lower adapters, which forms together with the well shaft a tube annular space interconnected with upper well formation, and an annular channel with the hydraulic piston pump cylinder for connection of an outlet of centrifugal submersible pump to the tubing string through holes made in the hydraulic piston pump cylinder. The hydraulic piston pump cylinder is adjacent with its end face to a hydraulic nozzle for connection of the tube annular space to the hydraulic piston pump. Lower adapter connects the cylinder of the hydraulic piston pump to a shank tightly located in the packer, downstream of which the shank is connected to the outlet of centrifugal submersible pump, on the opposite side of which there attached is a telemetry unit to measure parameters of pressure, temperature and liquid resistance of lower formation, which is connected via a communication cable of transfer of measured parameters to an indication device, which is located in the well head. Communication cable and power cable of centrifugal submersible pump are tightly passed through the packer; for that purpose, in the packer cylindrical wall there is a sealing assembly of power and communication cables of the telemetry unit. The latter is located on the level of the well lower formation. Drive rod of the hydraulic piston pump can be hollow. The plunger cavity is interconnected through that rod with the well head.
EFFECT: simpler erection of process equipment of the well and higher real-time well operation efficiency.
2 cl, 1 dwg
