DOWNHOLE HEATING DEVICE TO BE INTRODUCED IN A WELL BORED IN AN UNDERGROUND FORMATION CONTAINING A SOLID HYDROCARBONACEOUS LAYER, RELATED INSTALLATION, AND METHOD

摘要

The downhole heating device (22) comprises at least a first heating sleeve (66A) having an outer surface (74) intended to be at least partially immersed in a heating fluid (20) in contact with the formation. The first heating sleeve (66A) delimits an inner central passage (76) able to receive the heating fluid (20) in contact with the formation. The first heating sleeve (66A) comprises at least an inner inducer, in thermal communication and/or delimiting the central passage (76), an inner thermal thermally insulating layer and an inner electrically conductive coil able to be electrically powered to generate heat in the inner inducer by induction.