G - Physics – 01 – V
Patent
G - Physics
01
V
G01V 11/00 (2006.01) G01V 3/32 (2006.01)
Patent
CA 2245720
A method is disclosed for determining a nuclear magnetic resonance characteristic and the resistivity of earth formations surrounding a borehole, including the following steps: passing a logging device through the borehole; producing, at the logging device, a static magnetic field; producing, at the logging device, electromagnetic energy having a field component in the formations that is orthogonal to the static magnetic field; receiving, at the logging device, electromagnetic energy that has passed through said formations; and determining, from the received electromagnetic energy, the nuclear magnetic resonance characteristic of the formations and the resistivity of the formations.
L'invention porte sur un procédé permettant de déterminer la caractéristique de RMN ainsi que la résistivité de formations géologiques entourant un sondage, qui comporte les étapes suivantes: descendre un enregistreur dans le sondage; produire au niveau de l'enregistreur un champ magnétique statique; produire de l'énergie électromagnétique dont la composante intérieure à la formation est orthogonale au champs magnétique statique; recevoir dans l'enregistreur l'énergie électromagnétique ayant traversé lesdites formations; et déterminer en fonction de l'énergie électromagnétique reçue la caractéristique de RMN ainsi que la résistivité des formations.
Griffin Douglas
Sezginer Abdurrahman
Schlumberger Canada Limited
Smart & Biggar
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