Acoustic position measurement system for well bore formation

E - Fixed Constructions – 21 – B

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Details

E21B 47/026 (2006.01) E21B 44/00 (2006.01) G01V 1/48 (2006.01)

Patent

CA 2474665

An acoustic position measurement system (23) and method includes an acoustic transmitter operable to transmit a sound wave into an underground well bore (18) in a target formation (26). The sound wave is configured to reflect from a boundary formation (28,29) proximate the target formation. The system includes an acoustic receiver operable to receive a reflected sound wave. The reflected sound wave comprises a reflection of the sound wave from the boundary formation. The system also includes an electronics portion electrically coupled to the acoustic receiver. The electronics portion is operable to process the reflected sound wave and produce, based upon a characteristic of the reflected sound wave, data output indicative of a position of the acoustic position measurement system in the target formation.

L'invention concerne un systíme (23) et un procédé de mesure de position acoustique qui font appel à un émetteur acoustique servant à émettre une onde sonore dans un puits de forage souterrain (18) creusé dans une formation cible (26). L'onde sonore est configurée pour se réfléchir à partir d'une formation (28,29) à proximité de la formation cible. Ce systíme comprend un récepteur acoustique servant à recevoir une onde sonore réfléchie. L'onde sonore réfléchie consiste en une réflexion de l'onde sonore à partir de la formation limitrophe. Ce systíme comprend également une partie électronique couplée électriquement au récepteur acoustique. La partie électronique sert à traiter l'onde sonore réfléchie et à produire, sur la base d'une caractéristique de l'onde sonore reflétée, des données de sortie qui indiquent une position du systíme de mesure de position acoustique dans la formation cible.

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