Analysis of Transient Electromagnetic Field Propagation in Well-Logging Environments via an Efficient Mode-Matching Technique

摘要

In this paper, we present a study on the response of well-logging sensors exploiting transient electromagnetic sources in complex subsurface formations by using a combined frequency-domain mode-matching technique with a numerical inverse Fourier transform in a computationally efficient manner. We present five representative examples to validate and explore the time evolution of the received waves in view of it velocity and attenuation. Preliminary conclusions are presented and the potential of this approach for the study of the time-domain response of logging-while-drilling sensors in realistic problems with radial and axial stratifications is then summarized.