FIELD: oil and gas industry.
SUBSTANCE: according to method into well it is down on column of pipes 11, packer 12 and circulating valves 14. It is implemented pumping into stratum acid bath. It is downed on flexible smooth pipe 1 into well manometer gage 2, potted component 3 and jet pump 4. Outlet of diffusion cell 8 of pump 4 is connected to hole clearance of pipe 1, its nozzle 6 - to cavity of pipe 1, and in the channel 9 of lead-in of pumped medium it is installed back valve 10. It is isolated by component 3 distance between pipe 1 and cavity of pipe column 11 with underpack zone well. It is fed by pipe 1 working fluid medium into nozzle 6 and it is implemented drainage of well with continuous measurement of bottom-hole pressure at different depression. It is deeply stopped working pump operation 4 and valve 10 it is isolated cavity of pipe 1 over pump 4 with its annulus space over element 3 and underpacker 4, keeping under packer 12 reduced bottom-hole pressure. It is implemented registration of curve pressure recovery. By pipe 1 under pressure it is fed nitrogen, which is extruded working liquid medium, adjusting pressure over and pump 4. It is bleeded nitrogen pressure in pipe 1 and with its help it is lifted pump 4 with element 3 and manometre gage 2 on the surface. It is launched well into operation by fountain method.
EFFECT: reliability growth of operation and productivity of jet installation.
1 dwg
