FIELD: oil producing industry. SUBSTANCE: jet plant has packer, tube string and jet pump. Pump housing has active nozzle and stepped through channel with seat between steps for mounting sealing unit with axial channel plant has radiator and receiver-converter of physical fields. Pump outlet is connected to space surrounding tube string, and handled medium inlet is connected to space of tube string lower than sealing unit. Inlet into active nozzle is connected to tube string space higher than sealing unit. Through channel of pump is made parallel to tube string axis. Diameter of through channel located above seat 0.5 mm greater than diameter of channel below seat, minimum. Axis of active nozzle is parallel to axis of through channel and is located at a distance not less than 1.1 radius of through channel from axis of through channel. Diameter of axial channel of sealing unit is maximum 0.6 of outer diameter of sealing unit. Sealing unit is installed for replacement alternately by functional insert: locking, depression, pressure testing ones and insert for recording formation pressure restoration curves and insert for hydrodynamic action onto formation. Inserts are made for mounting bottom-hole self-contained devices and downhole samplers and are furnished with means for delivering and removing them from pump by means of cable facilities. Sealing unit is installed for displacement along logging cable above tip on which physical fields receiver-converter is installed. EFFECT: optimization of plant member dimensions, improved reliability of plant in service. 3 cl, 2 dwg
