ELECTROMAGNETIC ANALYSIS IN TIME DOMAIN IN VARIOUS CONFIGURATIONS FOR IDENTIFICATION OF HYDROCARBON RESERVOIRS: NUMERICAL MODELING

Abstract:

In this research, various configurations of reservoirs were simulated using finite elements in 3D, in order to analyze the subsoil electromagnetic responses in the time domain. Apparent resistivity curves both early and late time and their respective sensitivities in detecting hydrocarbon reservoirs are found. The maximum sensitivity obtained in the early and late times was 55.72% and 49.32% respectively. The separation of 1km between the transmitter and receiver was used in the simulations, because at shorter distances problems were encountered in in determining the resistivity curves. In addition, it was determined that the current dipole transmitter must be over 800A • m to overcome the level of noise instrumental of the receptor coil.