Electromagnetic Shielding of Sources within a Metal-Cased Bore Hole
- 1 April 1977
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Geoscience Electronics
- Vol. 15 (2), 108-112
- https://doi.org/10.1109/tge.1977.294483
Abstract
An abbreviated derivation is given for the electromagnetic fields produced by a two-dimensional source located within a metalcased bore hole surrounded by a homogeneous rock formation. Numerical results are presented for the fields in the external region. It is shown that the combined influence of the conductivity and permeability of the steel casing will severely attenuate the fields even at frequencies as low as 100 Hz.Keywords
This publication has 1 reference indexed in Scilit:
- Mutual electromagnetic coupling of coaxial loops in a boreholeRadio Science, 1973