METHOD OF THERMOCHEMICAL TREATMENT OF BOTTOM-HOLE FORMATION ZONE AND DOWNHOLE EQUIPMENT Russian patent published in 2000 - IPC

FIELD: oil-producing industry; applicable for treatment of bottom-hole formation and downhole equipment for removal of asphalt-resinous and paraffin-hydrate deposits. SUBSTANCE: method includes pumping of reagent through granulated aluminum. Reagent is used in the form of alkali solution. Alkali solution is pumped through granulated aluminum on wellhead with alkali solution-aluminum ratio of stoichiometric value. Intensity of heating of alkali solution is regulated with water pumped together with alkali solution through granulated aluminum. During treatment, heated alkali solution is pumped through annular space. EFFECT: higher efficiency of treatment.