Very high data rate telemetry system for use in a wellbore

Details Very high data rate telemetry system for use in a wellbore Very high data rate telemetry system for use in a wellbore

E - Fixed Constructions

21

B

E21B 47/12 (2006.01) G01V 1/22 (2006.01) H04L 5/02 (2006.01) G01V 1/40 (2006.01)

Patent

CA 2442054

A very high data rate telemetry system is provided for use in a wellbore. In a described embodiment, a telemetry system includes multiple nodes positioned in the wellbore and distributed over a substantial length of the wellbore. The nodes simultaneously communicate with a remote location at a very high combined data transmission rate. A method of communicating data in a wellbore is also provided. The method includes the steps of installing multiple modems in the wellbore, installing a remote modem at a location remote from the downhole modems, and simultaneously communicating data from each of the downhole modems to the remote location. Each downhole modem communicates with the remote modem using a unique set of frequency subchannels.

L'invention concerne un système de télémesure à débit binaire très élevé s'utilisant dans un puits de forage. Dans l'un des modes de réalisation, ce système de télémesure comprend des noeuds multiples se situant dans le puits de forage, répartis sur la majeur partie du puits de forage. Ces noeuds communiquent simultanément avec un emplacement distant à une vitesse de transmission combinée très élevée. L'invention concerne également un procédé de communication de données dans un puits de forage. Ce procédé consiste d'abord à installer des modems multiples dans le puits de forage, à installer ensuite un modem distant dans un emplacement distant par rapport aux modems de fond, puis à communiquer simultanément les données entre chacun des modems de fond et l'emplacement distant. Chaque modem de fond communique avec le modem distant via une seule gamme de sous-voies.

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