Patent Number: 6,445,187

Title: System for the measurement of electrical characteristics of geologicalformations from within steel cased wells using magnetic circuits

A system for measuring magnetic fields outside a ferromagnetic containerfrom inside the same container is described. The invention uses magneticircuits to direct the flow of magnetic flux to a magnetic field detector.By using magnetic fields for detection, this invention is able to measurethe properties of magnetic materials outside the ferromagnetic container,such as a geologic formation, electric or magnetic parameters, or log welland drill holes that have been cased.

Inventors: Montgomery; Jerry R. (West Valley City, UT), Montgomery; Sarah Elle (Salt Lake City, UT), Montgomery; Nathan Rich (Kemmerer, WY)


International Classification:

Expiration Date: 09/03/2014