METHOD FOR THERMOCHEMICAL TREATMENT OF BOTTOM-HOLE ZONE OF BED AND WELL Russian patent published in 1998 - IPC

FIELD: oil and gas production industry. SUBSTANCE: this is directed at increasing producing capacity of oil, gas and gas-condensate wells. According to method, introduced into well is water solution containing ammonium salts of organic and inorganic acids, hypochlorites of alkali metals, salts of nitrous acids. Accelerated thermochemical reaction is ensured by introducing into well of blue vitriol, chlorous aluminium, acids. Introduction of reaction accelerator and solution is effected separately. In result of treatment, temperature at well head is raised substantially which ensures melting of deposits of paraffin and asphalticresin materials, and pressure reaches dozens of MPa which leads to creation of fissures in rock mass and increase of product output. EFFECT: high efficiency. 4 cl