METHOD OF BOTTOMHOLE OIL FORMATION ZONE TREATMENT AND DEVICE FOR METHOD EMBODIMENT Russian patent published in 2003 - IPC

FIELD: oil producing industry; applicable in thermochemical stimulation of bottomhole oil formation zone. SUBSTANCE: method provides for delivery to interval of formation treatment of monolithic charge from mixture forming hydrochloric and hydrofluoric acids in sealed combustible body. Charge is lowered into well on cable. Body and monolithic charge are burnt by layer burning from lower end. Burning is accompanied by producing high temperature and pressure and gas-liquid medium. Produced acids are forced into formation by gas pressure built up in course of burning of gas-generating charge lowered in Composition of monolithic charge. Device for embodiment of claimed method has sealed body from combustible material accommodating monolithic charge from mixture of components forming hydrochloric and hydrofluoric acids during their burning. Located above monolithic charge in body is gas-generating charge and charge igniter is arranged under gas-generating charge. Device has cable inlet head. Body material in its burning additionally produces hydrochloric acid, for instance, from polyvinylchloride. EFFECT: higher efficiency of treatment due to more deep heating of formation by thermochemical stimulation, reduced consumption of energy and time, simplified device design. 3 cl, 1 dwg