METHOD FOR TREATING BOTTOM-HOLE ZONE OF WELLS IN PRODUCTIVE BED Russian patent published in 1999 - IPC

FIELD: oil production industry. SUBSTANCE: this relates to intensification of oil inflow to wells with application of solid-fuel devices for thermobarochemical treatment. According to method, thermobarochemical treatment of bottom-hole zone of well in bed is combined with subjecting bed to repressing-depressing treatment and this is carried out by means of successive burning of solid-fuel charge and solid-fuel blasting cartridge. For this purpose, solid-fuel charge of end-face firing is burnt under packer in treating interval in well filled with liquid. Period of burning and surplus pressure are regulated by varying dimensions of charge and selection of fuel burning speed. At burning of charge, unfilled string of pump-compressor pipes is hermetically sealed by means of solid-fuel blasting cartridge which is fired with regulated time delay in ignition after burning-out of solid-fuel charge. Application of aforesaid method allows for carrying out highly efficient ecologically safe treatment of bottom-hole zone of wells in productive beds. EFFECT: higher efficiency. 1 dwg