Effect of electrified surface casing on the interference characteristics of stray current generated by deep‐well anode beds

Abstract

Currently, the impressed current cathodic protection with deep-well anode beds has been found that the surface casing was charged. In this study, 13 deep-well anode beds were selected randomly to investigate whether their surface casings were electrified. Possible causes of the electrification of surface casings are also discussed. A numerical model for simulating the geoelectric field of a representative deep-well anode bed with an electrified surface casing was established and validated by data from on-site testing. The difference | © 2022 Wiley-VCH GmbH.