METHOD FOR TREATING BOTTOM-HOLE ZONE OF WELL Russian patent published in 1999 - IPC

FIELD: oil production industry. SUBSTANCE: method can be used in operations directed at intensification of production rate of wells. According to method, in treatment of well, undertaken is lowering of perforated container by string of pump-compressor pipes to bottom-hole of well. Located inside container are enclosed and hermetically sealed aluminium capsules filled with alkali metal, alkali-earth metal or alloy on its base. Carried to bottom-hole of well is acidic solution, and container and annular space are filled with acidic solution at bottom-hole of well. Now undertaken is technological pause until destruction of enclosed hermetically sealed aluminium capsules, thus allowing for contact between well fluid and alkali metal, alkali-earth metal or alloy on its base in acidic well fluid. Products of reaction are pressure-forced into bottom-hole zone of well. Application of aforesaid method yields intensification of production rate of wells. EFFECT: higher efficiency.