METHOD OF THERMOCHEMICAL ACTION ON POROUS MEDIUM Russian patent published in 2010 - IPC E21B43/24 

FIELD: oil and gas industry.

SUBSTANCE: method involves pumping of reagent through metal particles by using the well at the ratio of solution of reagent and metal particles more than stoichiometric, regulation of warming-up with water. According to invention, to porous medium there pumped in water are metal particles of not less than 100 nm. At that, in order to determine maximum size of metal particles - R_p, there determined is permeability, porosity and structure of pore space, to which water metal particles will be pumped and maximum size of which shall be chosen from the following condition: R_p≤R_e /50, where R_e - effective radius of pores of porous medium. Magnesium, aluminium or calcium is used as particle metal, and alkali or acid - as reagent. Warming up of porous medium is performed from condition of its cracking; at that, coverage of deposit with heat is enlarged. For that purpose, after water for regulating the warming-up intensity of porous medium is pumped, flow regulating reagents are pumped.

EFFECT: increasing extraction of hydrocarbons from porous medium.

4 cl, 2 ex