METHOD FOR DEVELOPMENT OF HARD-TO-RECOVER CARBOHYDRATES Russian patent published in 2010 - IPC E21B43/263 

FIELD: mining.

SUBSTANCE: method consists in arrangement of gas-dynamic rupture of bed by initiation of combustible mixture burning with release of high-temperature gaseous products and complex mechanical, thermal and physical-chemical impact at bed. Water combustible-oxidant mixture is used, which is prior to initiation of its burning is pumped into well. Its burning is initiated with the help of powder pressure generator, providing for additional formation of minor cracks net in bed, and their size is increased at the stage of water combustible-oxidant mixture burning. Burning temperature in zone of combustible-oxidant mixture burning is maintained as 1100-1600°K. Gas-dynamic rupture of bed is carried out, properties of which in process of dynamic loading provide for their irreversible deformation with residual cracks, which do not require fixation.

EFFECT: simplified technology of method implementation and reduction of costs for its realisation.

1 ex, 1 tbl