THERMO-IMPULSE METHOD FOR PROCESSING FACE-ADJACENT ZONE OF OIL WELLS Russian patent published in 2007 - IPC E21B43/24 

FIELD: oil extractive industry, in particular, methods for processing face-adjacent zone of wells for increasing productiveness thereof.

SUBSTANCE: method includes lowering a pressurized container on cable-rope onto well face with heat-producing composition inside, mounting the container in the interval of bed being processed, initiating burning of heat-producing composition by feeding an electric impulse from mouth by means of cable-rope, processing of face adjacent zone and extracting the container after the processing. In accordance to invention, face-adjacent zone is affected simultaneously by striking thermal and hydraulic effect as a result of heat transfer from burning heat-producing composition. Aforementioned composition includes mixtures of powders, consisting of one or several solid phase oxidizers and one or several solid phase fuel materials. During processing of face-adjacent zone liquid is forced into interval of well being processed, washing the container, with flow equal to minimal pickup of bed being processed and in pulsing mode with frequency of pulsations ranging from 0,1 to 500 Hz. Then, technological aging of forced liquid and well completion are performed.

EFFECT: increased efficiency and manufacturability of method for affecting face adjacent zone.

4 cl, 1 ex