METHOD OF THERMODYNAMIC STIMULATION OF OIL BOTTOM-HOLE ZONE Russian patent published in 2002 - IPC

FIELD: mining; applicable in completion and restoration of operating well production rate reduced due to formation colmatage. SUBSTANCE: method includes injection of cold heat carrier, isolation of bottom-hole zone with packer, heating of heat carrier by electric heater, supply of hot heat carrier to producing formation under pressure exceeding formation pressure. Heat carrier is pumped into internal heater channel and its flow is turbulized in internal channel. Then heat carrier is additionally heated due to heat exchange with external wall of heater body. Pressure and flow rate of heat carrier are formed at surface. Electric heater is run into well on tubing down to below casing perforation holes. EFFECT: increased temperature of heat carrier injected into formation and improved conditions of electric heater operation. 1 dwg