DEVICE FOR TREATMENT OF BOTTOM HOLE ZONE OF OIL AND GAS WELL Russian patent published in 2008 - IPC E21B43/24 E21B43/27 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil and gas industry and can be implemented at making devices for treatment of bottom hole zone with application of wire-line technique. The invention facilitates reducing of production cost of the device, simplification of its design and safety of its application. Device includes a pressure tight case, equipped with a current-carrying cable, thermo-gas-generating substance, a burning initiating unit and a destructible shell, filled with chemically active liquid. According to the invention the device is additionally equipped with hydro reacting components made in form of aluminium cartridges, arranged in kind of a string in the upper portion of the case on a fusible insertion and filled with thermo gas generating substance - metallic sodium. The destructible shell with chemically active liquid - water - is made out of polyethylene film of thickness not more, than 0.05 mm and placed in a lower portion of the case; the said case has a side perforation over covered with plugs. At that, a dowel-knife designed to puncture the shell is located in the base of a lower hydro reactive component - the aluminium cartridge.

EFFECT: reduced production cost of the device, simplification of its design and safety of its application.

2 cl, 2 dwg