Title :
Electromagnetic basis of drill-rod telemetry
Author :
Hill, Douglas A. ; Wait, J.R.
Author_Institution :
US Department of Commerce, ITS/NTIA and ERL/NOAA, Boulder, USA
Abstract :
Some calculated results are presented for the signal that can be propagated to the surface from a toroidal coil source near the bottom of a drill rod. Optimum frequencies are predicted to occur in the range 10¿100 Hz for depths of the order of several kilometres.
Keywords :
electromagnetic induction; geophysical prospecting; telemetering; drill rod telemetry; geophysical prospecting; optimum frequency range 10 to 100 Hz; toroidal coil source;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19780361
