FIELD: engines and pumps.
SUBSTANCE: invention relates to pumps intended for well development. Proposed unit comprises pipe string supporting hydromechanical slot perforator, packer with axial bore and support, successively arranged thereon. The latter has axial channel with jet pump mount seat. Support wall has bypass channel with check valve. Pump comprises cylindrical housing with outer circular ledge for mounting the pump in its place, channels feeding active medium into pump nozzle, channel feeding medium pumped out from the well and discharging medium mix, and flow passage accommodating spring-loaded valve with follower. The latter is brought out of the housing top part and has a head on its top part. Flow passage communicates channels that feed pumped out media and discharge medium mix. The housing, below the pump, accommodates self-contained instruments to measure physical parametres. Support channel diametre, below mount seat, is not less than that of packer flow passage.
EFFECT: expanded performances.
