Apparatus and method for communicating information between a...

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E - Fixed Constructions

21

B

E21B 47/18 (2006.01)

Patent

CA 2705511

A system, tool and method of communicating data between a wellbore and the surface are provided that include the features of transmitting data from a number of tools in the wellbore to the surface at a first data rate via a communication link in a tubing that supplies fluid underpressure, detecting occurrence of a fault relating to the data communication link is below a threshold, and switching transmission of least some of the data from the tools by generating pressure pulses through the fluid in the tubing at a second data rate that is lower than the first data rate.

La présente invention concerne un système, un outil et un procédé permettant la communication de données entre un trou de forage et la surface les caractérisé en ce qu'il comprend la transmission de données depuis une pluralité d'outils dans le trou de forage vers la surface à un premier débit de données via un lien de communication dans une colonne de production qui fournit un fluide sous pression, la détection de la survenance d'une défaillance indiquant que le lien de communication est inférieur à un seuil, et la commutation de transmission d'au moins une partie des données depuis les outils grâce à la génération d'impulsions de pression à travers le fluide dans la colonne de distribution à un second débit de données qui est inférieur au premier débit de données.

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