Single-switching method of eliminating the effect of electromagn

Details Single-switching method of eliminating the effect of electromagn Single-switching method of eliminating the effect of electromagn

1994-01-26

1995-08-01

Strecker, Gerard R.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

With radiant energy or nonconductive-type transmitter

324338, 324344, G01V 328, G01V 330

Patent

active

054382670

ABSTRACT:
The invention is directed toward the elimination of the effects of electromagnetic coupling between pairs of receivers. The preferred embodiment encompasses the measurement of resistivity and other electromagnetic properties of earth formation in a borehole environment. The invention also incorporates techniques for eliminating the effects of receiver antenna drift and the effects of power variations of two or more transmitters.

REFERENCES:
patent: 2790138 (1957-04-01), Poupon
patent: 3849721 (1974-11-01), Calvert
patent: 4185238 (1980-01-01), Huchital et al.
patent: 4636731 (1987-01-01), Savage et al.
patent: 4968940 (1990-11-01), Clark et al.
patent: 5210495 (1993-05-01), Hapashy et al.

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