Method and apparatus for electromagnetic logging with reduction

Details Method and apparatus for electromagnetic logging with reduction Method and apparatus for electromagnetic logging with reduction

1985-11-04

1987-04-21

Karlsen, Ernest F.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

With radiant energy or nonconductive-type transmitter

G01V 330

Patent

active

046599924

ABSTRACT:
The disclosure is directed to an improved method and apparatus for subsurface electromagnetic logging in a borehole wherein means are provided to detect transverse magnetic mode components and to either correct for these spurious components in the processing of the received signals or to generate suitable cancelling signals.

REFERENCES:
patent: 4538109 (1985-08-01), Clark

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