FIELD: oil and gas production.
SUBSTANCE: jet pump, packer and generator of pulse current arranged on production string are lowered into well. The pump is equipped with channels for supply of working fluid and for withdrawal of reservoir fluid from well. The jet pump, packer and generator of pulse current are positioned above level of perforation of a casing in a zone of the reservoir. Further, the well is processed and cleaned from mud. Working fluid is supplied into the reservoir through production string, channels of the jet pump, the packer and generator of pulse current. Viscous-elastic mixtures are pumped via the production string, channels of the jet pump, the packer and generator of pulse current. Successively, influx from the well is excited and activated by means of un-packing. Working fluid for influx activation is supplied through annular space and the jet pump into the production string. The device consists of the production string, of an upper cylinder case, of the packer with the central channel disconnecting annular space with an under-the packer zone, of the jet pump with its nozzle upwards and of the pulse current generator, all hydraulically connected with the central channel of the packer. An inlet of the jet pump for working fluid in it is connected with annular space via back valves, while an outlet of the jet pump is connected with the production string. Also, the jet pump is equipped with vibrations cut-off device in form of labyrinths, while the generator is positioned below the packer. A coupling with hydraulic channels is installed between the packer and vibrations generator in the device for hydraulic influence on the reservoir. Hydraulic channels of the coupling equipped with back valves communicate the central channel of the packer with annular space.
EFFECT: raised efficiency of reservoir bottomhole zone cleaning due to raised efficiency of implemented device.
3 cl, 1 dwg
