METHOD FOR ACTION AT WELL BOTTOM ZONE AT DEVELOPMENT STAGE (VERSIONS) AND DEVICE FOR ITS REALISATION Russian patent published in 2009 - IPC E21B43/25 

FIELD: oil and gas production.

SUBSTANCE: group of inventions is related to methods for generation of seismic energy in well at development stage. According to invention, pressure pulses are created in well cavity hydraulic medium. Facility used to create mentioned pressure pulses is a source of electric hydraulic pulse discharge, comprising accumulating capacitor, electrodes closed with metal wire with area of cross section from 0.1 mm² to 0.9 mm². Voltage pulses with value from 2.6 kV to 4.3 kV are sent to electrodes with time intervals from 20 sec to 70 sec, thus providing wire explosion and formation of pressure pulses in hydraulic medium, at the same time distance between electrodes makes from 11 mm to 60 mm. Source displacement is provided at the distance from 300 mm to 1000 mm.

EFFECT: improved efficiency of development due to provision of resonant events in elements of system "well - well bottom zone - beds", reduced time for development, is simplification, improved safety and minimum effect at ecology.

4 cl, 3 ex, 7 dwg