FIELD: oil producing industry.
SUBSTANCE: invention relates to oil producing well pumping plants. Proposed well plant for hydrodynamic tests of wells has packer and jet pump installed on tubing string from bottom to top. Pump has housing with active nozzle and mixing chamber arranged along tubing string and channel deliver pumped out medium made in housing coaxially with tubing string and stepped through channel arranged higher than pumped out medium channel with seat to install insert for recording formation pressure build-up curves. Said insert is furnished with bypass channels, first of which placed in communication from inlet side with pumped out medium delivery channel of jet pump housing, and from outlet side, with inlet of mixing chamber. Check valve is installed in bypass channel. Second bypass channel from outlet side communicates with pumped medium delivery channel, and from side of inlet it communicates with outlet of cylindrical valve installed higher and spring-loaded relative to insert to record formation pressure build-up curves and overlap inlet second bypass channel in initial position. Third bypass channel from inlet side communicates with outlet of active nozzle and with inlet of mixing chamber, and from outlet side it communicates with inlet of cylindrical valve. In lower part of cylindrical valve transmitter of pressure in second bypass channel is installed with cable connected to transmitter to transmit information on pressure to surface. Area pf cross section of each bypass channel is not less than summary area of inlet cross section of mixing chamber and outlet cross section of active nozzle.
EFFECT: improved reliability and increased capacity of well jet plant.
2 cl, 1 dwg
