METHOD FOR COMPLEX HYDROGEN THERMO-BAROCHEMICAL PROCESSING OF PRODUCTION FORMATION Russian patent published in 2017 - IPC E21B43/24 C09K8/592 

FIELD: oil and gas industry.

SUBSTANCE: method of complex hydrogen thermo-barochemical treatment of the bottomhole zone of a production formation includes separate and sequential delivery to the bottomhole through the tubing of hydro-reactive compositions based on aluminium hydride sodium composite and combustible-oxidizing compositions based on complex salts. The injection of the first mixture of combustible-oxidizing and hydro-reactive compounds with a density of 1.35-1.4 g/cm³ with filling of production string volume from bottomhole to lower perforations level. On top of the first mixture an aggregate-stable nanosuspension of hydro-reactive composition of density 1.23-1.25 g/cm³ with a content of 5-50% of the dispersed phase of aluminium hydride sodium composite in the dispersion medium of diesel fuel and organic solvent with quantitative content of the liquid phase components taken in proportional ratio providing the equality of the densities of the liquid and solid phases of nanosuspension which is injected at the predetermined value of formation porosity exceeding in the volume of the production string of the perforation zone interval followed by setting of aggregate-stable nanosuspension of hydroreactive composition directly to the bottomhole zone of the production formation. The second mixture of combustible-oxidizing and hydro-reactive compounds with a density of 1.6-1.8 g/cm³ in volume sufficient to effectively react with the first mixture of the fuel-oxidizing and hydro-reactive compounds.

EFFECT: increase processing efficiency in order to increase the permeability of the bottomhole formation zone, reduce the skin factor and increase the performance of well, possibility to use it for hard-to-recover oil and gas reserves.

2 cl, 3 dwg