The article considers the possibility of applying a high-frequency frequency electromagnetic field for heating heavy oil in pipelines. A laboratory test bench for studying the heating of heavy oils and asphalt-resin-paraffin deposits by a high frequency electromagnetic field is described. It includes three versions of a high frequency resonator with different ratios of the diameters of the outer and inner tubes. The degree of influence of the electromagnetic field on oil dispersed media is determined mainly by their dielectric parameters. Therefore, dielectric properties of oil were studied in a wide range of frequencies and temperatures. The results of experimental studies on the heating of high-viscosity oil and asphalt-resin-paraffin deposits by a high frequency electromagnetic field in static and dynamic regimes are presented. It is shown that the most intensive heating of oil is achieved when a ratio of the diameters of the outer and inner pipes is 1.7. The temperature dynamics of the oil samples under study and the heating rates of different oil samples were determined. It is shown that the higher the values of the dielectric parameters for oil at the working frequency of the generator, the higher the heating intensity. It is found that with increasing temperature for some samples of oil, the heating intensity decreases, which is explained by the decrease in the dielectric parameters of these oils with increasing temperature. Studies of oil heating with a similar resistive heating method have been carried out. The results showing the effectiveness of the radio frequency electromagnetic method of heating oil in a pipeline are compared with the resistive method in a dynamic mode. Based on the studies, a commercial radio frequency electromagnetic method for heating highly viscous oils in pipelines has been developed. The calculations of the power of an industrial generator based on the results of laboratory studies are given.
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