DEVICE FOR WAVE TREATMENT OF FORMATION Russian patent published in 2002 - IPC

FIELD: oil and gas producing industry; devices for formation stimulation by elastic vibrations. SUBSTANCE: device has barrel with central hole inlet channels and nozzle connected with inlet channel, central wedge-shaped dissector. Device has control channels, each channel is connected with one discharge chamber. Control chambers are located perpendicular to nozzle and connected with it. Inlets of working channels are connected with nozzles. Jet ejector is installed coaxially under central wedge-shaped dissector and made with isolated injection channels. Electrohydraulic members serve for creation of disturbance pressure in discharge chambers during discharges. Jet ejector is connected with outlet of working channel and forms circular cylindrical channel with its external walls together with internal surface of barrel in its lower part. Chamber inlet is connected with outlet of working channel and chamber outlet is connected with injection channels of jet ejector. Nozzle is separated by central wedge-shaped dissector. Central sectors may be interconnected. Device may have round hollow vessels located perpendicular to nozzle. EFFECT: higher efficiency of formation treatment due to possible selection of working frequency of generated vibrations, increased reliability, radiation power and production of pulses of any shape. 3 cl, 6 dwg