Systems and methods for measuring sea-bed resistivity

Details Systems and methods for measuring sea-bed resistivity Systems and methods for measuring sea-bed resistivity

G - Physics

01

V

G01V 3/08 (2006.01) G01V 3/10 (2006.01) G01V 3/12 (2006.01) G01V 3/26 (2006.01)

Patent

CA 2671434

A method for measuring the resistivity of sea-bed formations is described. An electromagnetic field is generated using at least one stationary long-range transmitter. The frequency of the electromagnetic field is between and/or including the ULF/ELF range. At least one component of the electromagnetic field is measured. A conductivity distribution is determined based on the at least one measured component. The determined conductivity distribution is correlated with geological formations and/or hydrocarbon deposits.

L'invention concerne un procédé destiné à mesurer la résistivité de formations d'un fond marin. Un champ magnétique est généré en utilisant au moins un émetteur fixe à longue portée. La fréquence du champ électromagnétique est comprise dans la bande ULF/ELF et/ou elle l'inclut. On mesure au moins une composante du champ électromagnétique. Une distribution de conductivités est déterminée sur la base de la ou des composantes mesurées. La distribution de conductivités déterminée fait l'objet d'une corrélation avec des formations géologiques et/ou des dépôts d'hydrocarbures.

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