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Patent
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G01V 3/30 (2006.01) E21B 47/12 (2006.01) G01V 3/38 (2006.01)
Patent
CA 2033819
ABSTRACT OF THE DISCLOSURE In a logging tool which transmits electromagnetic radiation into adjacent formations, and including such tools which operate as low as 20 Khz (typical for induction logs) up to as high as the gigahertz range, an improved antenna system is set forth. The antenna preferably transmits a circular polarized signal so that reflected and refracted return constituents in the receiver signal can be sorted out. For intermediate frequencies, the antenna can be potted in a high dielectric constant material. HLS 89.019
Rau Rama N.
Swabey Ogilvy Renault
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