METHOD OF TREATMENT OF FORMATION WELL ZONE AND DEVICE FOR METHOD EMBODIMENT Russian patent published in 2003 - IPC

FIELD: oil producing and ore mining industries; applicable in increase of bottom-hole formation zone by hydraulic fracturing and formation of fractures by other methods. SUBSTANCE: method includes location of string of powder and ignition charges in interval of producing formation; charges are burnt with the help of electric fuse located in channel of ignition charge with building up of pressure pulse of preset value. Ignition charge is arranged above perforation zone at a distance providing for the required volume of fluid between said charge and perforation zone for formation fractures in formation. Successively accomplished are hydraulic fracturing and thermogas chemical treatment of formation well zone for one round-trip operation. Power charges with developed burning surface are arranged above ignition charge. Powder charges which form high-temperature products in burning are located below ignition charge. High-temperature produced chemical composition facilities removal of colmatage deposits. Device for method embodiment has string of powder charges and one ignition charge. Located in channel is ignition charge, load-carrying logging cable, upper and lower hangers with endpieces. Lower hanger consists of metal body with conical hole for securing logging cable and with recess for laying cable central conductor to ignition cartridge. There are plug and endpieces. Ignition charge separated said string into two parts. Upper part accommodates powder charges with developed burning surface, and lower part, has normal powder charges. EFFECT: higher efficiency of method due to hydraulic fracturing of formation and thermogas chemical treatment of it, increased reliability of device. 3 cl, 2 dwg