Pseudoanalytical formulations for modeling the effect of an insulating layer in electromagnetic well logging


Journal Article

© 2018 IEEE. In this paper, we present a set of compact formulations to model the response of the electromagnetic well-logging tools in eccentric multilayered medium. Different from previous models, the coil antennas are imbedded in an insulating protection layer (IPL) rather than expose to the borehole directly, which agrees much better with some real tools, e.g., the array induction logging tool. The effects of both metal mandrel and an IPL are considered in eccentric scenarios. Our formulations are derived on the basis of the ratios of cylindrical functions, which obviate the notorious overflow issues during numerical computation. Numerical results show that the effect of IPL gradually appears with the increase of the eccentric distance.

Full Text

Duke Authors

Cited Authors

  • Hong, D; Yang, S; Zhang, Y; Huang, WF; Liu, QH

Published Date

  • December 1, 2018

Published In

Volume / Issue

  • 56 / 12

Start / End Page

  • 7022 - 7029

International Standard Serial Number (ISSN)

  • 0196-2892

Digital Object Identifier (DOI)

  • 10.1109/TGRS.2018.2847027

Citation Source

  • Scopus