METHOD FOR ELECTRO-THERMAL TREATMENT OF FACE-ADJACENT BED ZONE Russian patent published in 2005 - IPC

FIELD: oil and gas extractive industry.

SUBSTANCE: face-adjacent bed zone is heated by well electric heater and liquid is removed. Well is equipped with column of tubing pipes with perforated branch pipe at the end, separated by plug, with electric heater and pump below the plug. Branch pipe is positioned in zone of productive bed. Flow of liquid along inter-tubular space is limited by partial disengagement of inter-tubular well space at level of productive bed ceiling. Face-adjacent zone is heated with concurrent circulation of liquid along branch pipe below the cork and well space below disengagement location and feeding of water into inter-tubular space. Removal of liquid is performed with disabled heating and circulation of liquid.

EFFECT: higher efficiency.

1 ex, 1 dwg