METHOD OF THERMAL IMPACT AT BED Russian patent published in 2012 - IPC E21B43/24 E21B36/00 

FIELD: mining.

SUBSTANCE: method for thermal treatment of a well bottomhole area consists in filling of a tight heater with a coolant, its location in a well and heating of the well bottomhole area. The well bottomhole area is built in the form of a horizontally inclined or horizontal shaft. The heater is arranged in the form of a circulating heat exchanger, in which coolant previously heated on the surface is pumped. Prior to arrangement of a heat exchanger, bed physical parameters are investigated. The internal bed pressure is determined, as well as pressure of crack formation in the bed reservoir. When heating the bottomhole area of the bed, pressure is maintained in the well as not below the initial bed pressure and not above pressure of crack formation in the header due to bleeding of gas from the well and liquid from the lower level.

EFFECT: simplicity and efficiency of using the method, environmental safety.

1 dwg