G - Physics – 01 – V
Patent
G - Physics
01
V
G01V 3/00 (2006.01) G01N 27/72 (2006.01) G01N 33/24 (2006.01) G01V 3/26 (2006.01)
Patent
CA 2100851
A B S T R A C T The method of the invention consists in measuring remanent magnetization along a borehole drilled through a geological bed, in detecting the set of reversals in the remanent magnetization, in measuring the induced magnetization at the various levels in said bed, in detecting maxima in the induced magnetization, and in correlating these measurements with known dates, firstly of reversals in the earth' 9 magnetic field and secondly of terrestrial phenomena that have given rise to concentrations of highly magnetic substances, thus making it possible to give dates to the various levels of the bed. The method is particularly applicable to oil prospecting.
Compagnie Generale de Geophysique
Marks & Clerk
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