The results of numerical studies of heavy oil production by radio frequency electromagnetic heating (RF EM) from hydraulically fractured low-permeability reservoirs are presented. The fluid flow to a single vertical high-conductivity fracture is considered assuming that electrical and thermal properties of the reservoir rock and fluid-saturated fracture are the same. Comparative analysis is performed for the cases of heavy oil recovery by RF EM radiation with hydraulic fracturing and "cold" production. Modeling of the combined multi-stage method and economic analysis for different RF EM generator powers, differential pressure between the well and formation, and the fracture conductivity showed that the method is most effective for wells with "short" and low-conductivity hydraulic fractures.