Research on the Sealing Efficiency of Downhole Electromagnetic Barriers Based on COMSOL

In order to examine the impact of downhole electromagnetic energy barriers on the energy utilization efficiency of shale spectral resonance devices, a simulation analysis of the sealing effect of these barriers is performed. Using COMSOL Multiphysics software along with the principles of elastic wave propagation and nonlinear finite element algorithm, the propagation process of shock waves in the presence of electromagnetic energy barriers in downhole environments is analyzed. The simulation results demonstrate that following pulse discharge from the discharge unit of the shale spectral resonance device, the resulting shock waves propagate through the water and casing. By comparing the pressure of the shock waves detected at the specific point on the inner wall of the casing with and without the downhole electromagnetic energy barrier, the effectiveness of the barrier in sealing the shock waves is confirmed. Consequently, the energy utilization efficiency of the shale spectral resonance device is improved by 46.8%. This analysis provides a theoretical foundation for the practical implementation of downhole electromagnetic energy barriers in unconventional oil and gas production operations.