METHOD OF COMPLEX HYDROGEN THERMOBAROCHEMICAL TREATMENT OF PRODUCTIVE FORMATION Russian patent published in 2020 - IPC E21B43/24 C09K8/592 B82Y99/00 

FIELD: oil, gas and coke-chemical industries.

SUBSTANCE: invention relates to the oil-producing industry. In the method of complex hydrogen thermo-chemical treatment of the bottom-hole zone of the bed, separate injection of the first and second mixtures of combustible oxidative and hydro-reactive compounds (COC-HRC) is performed in a buffer liquid - dibromopropane in ratio (COC-HRC):buffer 5:1. First mixture COC-HRC-density 1.5–1.65 g/cm³ is injected in a volume equal to the volume of the production tubing from the bottom up to the level of the lower perforations. Then, the bottom-hole formation zone is squeezed in the volume exceeding the internal volume of the production string in the perforation zone interval, aggregation stable nanosuspension with hydroreactive composition based sodium aluminium hydride composite density 1.3–1.45 g/cm³ of the dispersed phase in amount of 5–50 % of the dispersion medium contained in the diesel fuel and solvent, which is used as dibromopropane. Then on top of the first mixture COC-HRC deliver the second COC-HRC mixture greater density - 1.65–1.98 g/cm³ in an amount sufficient to effectively respond to the first COC-HRC mixture.

EFFECT: technical result is reduction of skin factor, higher efficiency of processing and productivity of oil and gas wells, elimination of corrosive effect on elements of oil and gas production and processing equipment and chemical contamination of extracted formation fluid.

1 cl, 4 dwg, 1 tbl