Profiled recess for instrumented expandable components

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 17/00 (2006.01) E21B 17/02 (2006.01) E21B 17/20 (2006.01) E21B 43/08 (2006.01) E21B 43/10 (2006.01)

Patent

CA 2446115

The present invention provides a recess (10) within an expandable downhole tubular (20), such as an expandable sand screen. The recess resides within the wall, such as the outer shroud (26) of an expandable sand screen (20). The recess serves as a housing for instrumentation lines, fibre optics, control lines, or downhole instrumentation (62). By placing the lines and instrumentation within a wall of the expandable downhole tool, the tool can be expanded into the wall of a wellbore (48) without leaving a channel outside of the tool through which formation fluids might vertically migrate. The recess is useful in both cased hole and open hole completions. In one embodiment, the recess serves as a housing for an encapsulation (10') which itself may house instrumentation lines, control lines, and downhole instrumentation.

L'invention concerne un évidement (10) dans un équipement tubulaire déployable (20) de fond de puits, tel qu'un tamis à sable déployable (20). L'évidement se trouve dans la paroi, telle que le carénage extérieur (26) d'un tamis à sable déployable (20). Il sert d'enveloppe aux lignes des instruments, aux fibres optiques, aux lignes de commande ou aux instruments de fond de puits (62). En plaçant les lignes et les instruments dans une paroi de l'outil de fond de puits déployable, l'outil peut être déployé dans la paroi d'un puits de forage (48) sans qu'un canal soit laissé à l'extérieur de l'outil, canal dans lequel les fluides de la formation risquent de migrer. L'évidement est utile dans des réalisations à trou tubé ou non tubé. Dans un mode de réalisation, l'évidement sert d'enveloppe pour une encapsulation (10'), laquelle peut également loger les lignes des instruments, les lignes de commande et les instruments de fond de puits.

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