FIELD: oil producing industry. SUBSTANCE: proposed plant includes the following devices mounted on tubing from bottom to top: inlet funnel shank, packer with central channel and jet pump in housing of which active nozzle and mixing chamber are coaxially installed and channel to supply active medium, channel for medium pumped out well and stepped passage channel with seat between steps are made. Provision is made for mounting sealing unit in stepped channel. Sealing unit is installed of movement on logging cable or wire higher than tip for connecting radiator and receiver- transducer of physical fields and functional inserts, namely, interlock insert with through passage channel, pressure differential insert with self- contained instrument and insert for recording curves of restoration of formation pressure in underpacker space well with sample and self-contained instrument furnished with pressure, temperature, production rate and formation fluid composition pickups. Outlet of jet pump is connected to inner space of tubing higher than sealing unit. Nozzle of jet pump is connected through active medium supply channel with well annulus, and channel to supply medium pumped out of well is connected to inner space of tubing below sealing unit. Functional inserts are provided with special devices in upper part for installation and extraction from well. Diameter D1 of through passage channel of interlock insert is not less than 0.4 of diameter D2 of stepped passage channel of jet pump housing lower than seat. Diameter D3 of stepped passage channel higher than seat is greater than diameter D2 of said channel lower than seat by not less than 0.5 mm. Diameter D4 of radiator and receiver-transducer of physical fields is smaller by not less than 0.5 mm than diameter D2 of stepped passage channel lower than seat, and diameter D5 of central channel of packer. Maximum diameter of functional inserts is smaller than inner diameter D6 of tubing under jet pump by not less than 1.0 mm and length of each functional insert not less than its maximum diameter. EFFECT: improved reliability. 4 dwg
