Methods and systems for calibrating acoustic receivers

G - Physics – 01 – V

Patent

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G01V 13/00 (2006.01)

Patent

CA 2549058

A method and system for calibrating acoustic receivers (112). The method and system facilitate calibrating the acoustic receivers (112) while they are mounted to a downhole acoustic tool (102). Calibrating the acoustic receivers (112) in situ provides more accurate results than previously available. The method and system provide separate compensation factors for the acoustic receivers (112) at different frequencies and for different transmission sources. The separate compensation factors facilitate more accurate signal acquisition over a wider range of conditions.

L'invention concerne un procédé et un système permettant d'étalonner des récepteurs acoustiques (112). Ce procédé et ce système facilitent l'étalonnage des récepteurs acoustiques (112) lorsqu'ils sont montés sur un outil acoustique de fond de trou (102). L'étalonnage des récepteurs acoustiques (112) in situ donne des résultats plus précis que dans la technique antérieure. Ce procédé et ce système permettent d'obtenir des coefficients de compensation distincts pour chacun des récepteurs acoustiques (112) à des fréquences différentes et pour des sources de transmission différentes. Ces coefficients de compensation distincts autorisent une acquisition plus précise des signaux sur un plus large éventail de conditions.

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