3D MCSEM Modeling with COMSOL Multiphysics: A Comparison with Open- Source Software

This work uses two approaches to present the numerical three-dimensional modeling of the MCSEM - Marine Controlled-Source Electromagnetic methods: the commercial software COMSOL Multiphysics and the open-source code emged for a theoretical model of resistive blocks. We first compare the results of the two methodologies through the electric field amplitude’s responses for three survey lines. We also analyze the necessary circumstances and boundary conditions for COMSOL Multiphysics to be used properly in the modeling. After this comparison, we explore the facilities of the model built into COMSOL Multiphysics and simulate the model for various frequencies with and without the presence of resistive bodies. Finally, we analyze the results and suggest lines of research for the construction of the simulations to be explored in numerical modeling in these two approaches. Thus, we ratify both approaches in their suitable domain, use, and importance through this work.