DISTRIBUTION OF THE DENSITY OF HEAT SOURCES ORIGINATING IN AN OIL-SATURATED BED ON ABSORPTION OF HIGH-FREQUENCY ACOUSTIC AND ELECTROMAGNETIC WAVES

A method of heating an oil bed by means of the energy of electromagnetic and acoustic fi elds introduced into an oil-saturated bed is investigated. Different variants are considered: electromagnetic heating alone, acoustic heating alone, joint heating of the bed by both radiators located on the well within the power of the oil bed. As a result of the dissipation of the energy of the waves, volumetric heat sources appear in the medium the magnitude of which can be calculated by the Umov–Pointing theorem. The densities of the heat sources originating in the bed on propagation of acoustic waves at different frequencies (6, 16, and 22 kHz, with the frequency of electromagnetic waves 13.56 MHz) are compared. This article uses an exact expression for calculating the volume density of heat sources from acoustic waves, and simplifi ed formulas are given for the far-lying and close-lying radiation zones. The character of distribution of the density of heat sources in the bed at different distances from the radiators is investigated.
   
Author:  G. R. Izmailovaa, L. A. Kovaleva
Keywords:  hardly extracted reserves, high-frequency electromagnetic fi eld, acoustic fi eld, volume heat sources, oil saturated bed, Hankel function
Page:  1170