Method of determining formation anisotropy in deviated wells...

Details Method of determining formation anisotropy in deviated wells... Method of determining formation anisotropy in deviated wells...

G - Physics

01

V

G01V 3/28 (2006.01)

Patent

CA 2457117

Measurements are made with a multicomponent induction logging tool (10) in earth formations (201) in a borehole (202) inclined to earth formations (201). A combination of principal component measurements (301) is used to determine the horizontal resistivity (305) of the earth formations (201). The determined horizontal resistivities are used in a model for inversion of other components of the data to obtain the vertical formations resistivities (309). When multifrequency measurements are available, frequency focusing (301) is used.

L'invention concerne des mesures effectuées à l'aide d'un outil (10) de forage à multiples composants dans des formations terrestres (201) dans un trou (202) de forage incliné vers les formations terrestres (201). Une combinaison des mesures (301) des principaux composants est utilisée afin de déterminer la résistivité horizontale (305) des formations terrestres (201). Les résistivités horizontales déterminées sont utilisées dans un modèle d'inversion d'autres composants des données afin d'obtenir les résistivités verticales (309) des formations. Lorsque des mesures multifréquence sont disponibles, la focalisation (301) de fréquence est utilisée.

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