METHOD FOR PULSE-WAVE TREATMENT OF PRODUCTIVE FORMATION, AND DEVICE FOR ITS IMPLEMENTATION

摘要

FIELD: oil and gas industry.SUBSTANCE: method for pulse-wave treatment of a productive formation involves excitation in a liquid flow of periodic stalling cavitation. An additional near-axial cavitation cavity is created prior to stalling cavitation by liquid flow swirling. A device for pulse-wave treatment of the productive formation includes inlet and outlet pipelines, a Venturi tube and a resonator. A swirling chamber is installed at the Venturi tube inlet. The resonator is located at the end of the outlet pipelines and it has a straight-flow design in the form of a metal ring with metal rods located parallel to the device axis. With that, the device for pulse-wave treatment of the productive formation is cyclically moved from the roof of the productive formation to the bottom of the formation and back to the roof of the formation.EFFECT: improving treatment efficiency of a bottom-hole zone of the formation and improving operating reliability of the device.4 cl, 4 dwg