Multiple transmitter and receiver well loggin system

Details Multiple transmitter and receiver well loggin system Multiple transmitter and receiver well loggin system

G - Physics

01

V

G01V 3/08 (2006.01) G01V 1/44 (2006.01)

Patent

CA 2496403

The invention provides a system for determining geologic formation resistivity while drilling and a new method providing compensation for the vertical asymmetries of the tool response and the effects of borehole rugosity. The apparatus and method allows the construction of a tool body (12) considerably shorter in length than previous devices and provides more radial depths of investigation for a given number of transmitter and receiver antennas when compared to previous devices. A method for calibrating data acquisition errors of the system is also described.

La présente invention concerne un système permettant de déterminer la résistivité d'une formation géologique au cours du forage ainsi qu'un nouveau procédé de compensation des asymétries verticales de la réponse d'outil et des effets de rugosité de trou de sondage. L'appareil et le procédé selon l'invention permettent de construire un corps d'outil considérablement plus court que les dispositifs précédents et permet d'obtenir des profondeurs d'exploration plus radiales pour un nombre donné d'antennes émettrices et réceptrices comparé aux dispositifs précédents. L'invention concerne également un procédé d'étalonnage d'erreurs d'acquisition des données du système.

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