METHOD FOR PRODUCTIVE RESERVOIR WELL BORE ZONE TREATMENT Russian patent published in 2008 - IPC E21B43/24 

FIELD: oil production, particularly stimulation oil production by well bore zone treatment.

SUBSTANCE: method involves selecting injection and producing well pattern in oil reservoir to be developed; creating single engineering process of oil reservoir treatment by simultaneous well bore zone treatment in injection and producing wells. At the first stage productive reservoir well bore zone is heated simultaneously in all producing wells of selected pattern up to mudding component melting temperature, for instance with the use of heat-gas generators and time delay necessary for heat effect increase and gaseous combustion product substituting from liquid inside well bore is executed. At the second stage thermogas hydraulic fracturing of productive reservoir well bore zone is carried out in injection wells, for instance, with the use of quick-burning pyrotechnic charge. Impact pressure drawdown is created simultaneously in all producing wells of productive reservoir well bore zone, for instance by implosion method. To attain this, quick-burning pyrotechnic charge is triggered inside injection wells simultaneously with beginning of impact pressure drawdown in all producing wells, for instance by means of mobile communication system. At the third stage part of well fluid mixed with mudding components is simultaneously removed from productive reservoir well bore zone of all producing wells. Injection and producing well pattern is created to provide producing well selection from ones, which are the nearest to injection wells in productive reservoir.

EFFECT: increased efficiency due to provision of reliable hydrodynamic link in productive reservoir between injection and producing wells.

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