PRODUCTIVE BOTTOMHOLE FORMATION ZONE TREATMENT METHOD Russian patent published in 2006 - IPC E21B43/24 E21B43/18 

FIELD: oil production industry, particularly for bottomhole formation zone treatment.

SUBSTANCE: method involves lowering device suspended to wireline in well filled with liquid, wherein the device comprises receiving chamber perforated along the full length thereof, high-calorific solid heat-resistant slowly-burning charges installed in the receiving chamber, air chamber sealed with combustible conical solid-fuel cap; installing the receiving chamber within casing pipe perforation zone and performing reservoir treatment in several stages. At the first stage the reservoir is heated within not more than 30 min and for maximal possible reservoir depth by combusting slowly-burning high-calorific solid heat-resistant end-burning charge generating combustion products having temperature of up to 2000°C; performing overburden/drawdown actions on preheated reservoir by combusting rapidly-burning high-calorific solid heat-resistant gas generation charge of channel structure; applying implosion action to the reservoir by breaking seal of air chamber with 0.1 MPa pressure by combusting conical cap formed of high-strength heat resistant slowly-burning low-gas composition.

EFFECT: increased efficiency and reduced labor inputs for productive reservoir treatment.

2 cl, 1 ex