FIELD: engines and pumps.
SUBSTANCE: system consists of logging device 2, movable sealing element 3 and jet pump 4, which are mounted on flexible plain pipe 1. Outlet of diffuser 8 of pump 4 is connected to hole annulus of flexible plain pipe 1, and its nozzle 6 - to internal cavity of pipe 1. Check valve 10 is installed in channel 9 supplying the pumped medium. Pipe 1 is located with the possibility of axial movement in tubing string 11 provided with packer 12 for sealing the space between pipes 11 and borehole casing 13. Holes 14 are made in pipe 1 wall above device 2. Circulation valves 15 are installed in tubing string 11 above packer 12, and above them there located is support ring 15 with a hole for installing element 3. The latter is made in the form of housing 17 filled with a set of elastic gaskets 18 and thrust washers 19 and thrust pressure element 20 located from above. In lower part of housing 17 there fixed is support sleeve 21 with thrust flange 22 in its lower end and movable thrust ring 23 installed above it on sleeve 21. Between ring 23 and lower part of housing 17 there installed is cup 24.
EFFECT: improving operating reliability and efficiency of the system when processing productive formation and carrying out the well test.
1 dwg
