FIELD: oil and gas industry.
SUBSTANCE: underground reservoir is loaded by thermal energy in order to reduce viscosity of bitumen or extra heavy oil. For this purpose at least one electric/electromagnetic heating is envisaged; there's also conveying pipe for withdrawal of liquefied bitumen or extra heavy oil. At the preset depth of reservoir there are at least two linear extended conductors at least at parallel areas in landscape orientation. At that conductor ends inside or outside reservoir are connected conductively and form together conductive loop; outside the reservoir they are connected to external alternating current generator for electric power production. According to the invention parameters crucial for electric/ electromagnetic heating of the reservoir are variable in time and/or place and they are changed from outside of the reservoir for the purpose of optimisation of volume-flow rate during transportation of bitumen or extra heavy oil. At that electric power is transferred from at least one generator to adjoining inducers and inversed inducers in time, successively, so that it excludes mutual weakening of fields at inductive heating of the underground reservoir or transfer electric power is transferred to the above inducers simultaneously, but with different frequencies, different current intensity and phase shift per 180° adjoining inducers.
EFFECT: increasing efficiency of inventions.
22 cl, 4 dwg
