Methods and apparatus for electro-optical hybrid telemetry

E - Fixed Constructions – 21 – B

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E21B 47/12 (2006.01)

Patent

CA 2592280

Hybrid electrical-optical telemetry systems and methods are disclosed. The methods and systems facilitate faster data transmission rates between the surface and downhole tools and sensors. The methods and systems may also include a downhole electrical bus for inter~ tool and intra-tool communication to facilitate limited changes to existing downhole equipment. Some embodiments of the hybrid electrical-optical telemetry system (100) include a light source at the surface (108) and a downhole modulator. Some embodiments also include redundant, selectable optical systems. The methods and systems may operate via a single optical input/output cable.

L'invention concerne des systèmes et des procédés pour télémesure électro-optique hybride, facilitant la mise en oeuvre de débits de transmission de données plus rapides entre la surface et les outils/capteurs de fond de puits, et pouvant comprendre un bus électrique de fond de puits pour communications inter/intra-outils qui permet de mieux limiter les modifications aux équipements de fonds de puits existants. Sous certaines variantes, on décrit aussi des systèmes optiques sélectionnables redondants. Enfin, les procédés et systèmes considérés peuvent fonctionner via un seul câble optique d'entrée/sortie.

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