Non-contact capacitive datalink for a downhole assembly

E - Fixed Constructions – 21 – B

Patent

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E21B 47/12 (2006.01)

Patent

CA 2696804

Aspects of this invention include a downhole assembly having a non-contact, capacitive coupling including first and second transceivers deployed in corresponding first and second downhole tool members. The capacitive coupling is disposed to transfer electrical signals between the first and second transceivers. In one exemplary embodiment, the capacitive coupling is configured to transfer data and power between a substantially non-rotating tool member and a rotating tool member, for example, the shaft and blade housing in a steering tool. Exemplary embodiments of this invention provide a non-contact, high-speed data communication channel between first and second members of a downhole assembly. Moreover, exemplary embodiments of the invention also provide for simultaneous non-contact transmission of electrical power between the first and second tool members.

La présente invention concerne un ensemble de fond qui possède un couplage capacitif sans contact qui comprend des premier et second émetteurs-récepteurs déployés dans des premier et second éléments outils de fond correspondants. Le couplage capacitif est disposé pour transférer des signaux électriques entre les premier et second émetteurs-récepteurs. Dans mode de réalisation modèle, le couplage capacitif est configuré pour transférer des données et de l'énergie entre un élément outil sensiblement non rotatif et un élément outil rotatif, par exemple, l'arbre et le boîtier de lame dans un outil d'orientation. Des modes de réalisation modèles de la présente invention concernent un canal de communication de données à haute vitesse sans contact entre des premier et second éléments d'un assemblage de fond. En outre, des modes de réalisation modèles de l'invention proposent également une transmission sans contact simultanée d'énergie électrique entre les premier et second éléments outils.

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