Electromagnetic surveying

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United States of America Patent

PATENT NO 8188748
APP PUB NO 20100052688A1
SERIAL NO

12278933

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Abstract

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A method of determining the nature of subterranean strata. The transmitter antenna is towed by vessel at a distance h above the sea floor. The antenna omits a wave field whose strength is proportional to the current delivered to the antenna and this is monitored. The input voltage to the antenna is also measured and changes in antenna impedance are calculated. Changes in antenna impedance are used together with seismic information to determine the nature of the subsea strata.

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Patent Owner(s)

  • ELECTROMAGNETIC GEOSERVICES AS

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Schaug-Pettersen, Tor Trondheim, NO 5 414

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