TREATMENT METHOD OF WELLBORE Russian patent published in 2010 - IPC E21B43/27 

FIELD: oil-and-gas production.

SUBSTANCE: in the method of treatment of wellbore area of well, including delivery into toe on cable-rope of device, consisting of air chamber, finishing by receiving chamber with located in it gas generating during its combustion composition of mixture, extracting during thermodestruction hydrochloric acid, combustion of gas generating composition and formation of heated gaseous products at increasing of pressure in the treatment range, implementation of technological isolation for more deep response of hydrochloric acid with rock, opening through specified time period of air chamber by means of response of installed on its bottom combusted diaphragm with igniter and carry-over of pollutants from critical area of formation in the capacity of mentioned gas generating composition it is used mixture, containing, wt % ammonium nitrate of grade B 32-33, hexachloroethane 57-58, PVC resin chlorinated of grade "ПСХ-ЛС" 10, herewith material from this mixture of composition is implemented with compressive resistance not less than 30 MPa.

EFFECT: effectiveness increase of treatment of critical area of formation, made of carbonate strata.

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