Nuclear magnetic resonance determination of petrophysical...

Details Nuclear magnetic resonance determination of petrophysical... Nuclear magnetic resonance determination of petrophysical...

G - Physics

01

V

G01V 3/14 (2006.01) G01V 3/32 (2006.01)

Patent

CA 2193066

An improved system for using magnetic reso- nance techniques to obtain information relating to ge- ologic structures is disclosed. The system (30 and 32) of the present invention uses values of the total poros- ity of a formation and the porosity obtained via NMR pulse echo techniques, to derive additional information relating to the underlying geologic structures, includ- ing resistivity and water saturation.

L'invention concerne un système amélioré permettant d'utiliser les techniques faisant appel à la résonance magnétique pour obtenir des informations concernant des structures géologiques. Le système présenté (30 et 32) utilise les valeurs de porosité totale d'une formation et de porosité obtenues selon des techniques de résonance magnétique nucléaire impliquant un écho d'impulsion, cela afin d'en déduire des informations complémentaires concernant les structures géologiques sous-jacentes, y compris, la résistivité et la saturation en eau.

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