Downhole multiplexer and related methods

Details Downhole multiplexer and related methods Downhole multiplexer and related methods

E - Fixed Constructions

21

B

E21B 34/00 (2006.01) E21B 34/06 (2006.01) E21B 34/08 (2006.01) E21B 34/10 (2006.01) E21B 34/16 (2006.01) E21B 41/02 (2006.01) E21B 43/00 (2006.01) E21B 44/00 (2006.01)

Patent

CA 2337030

In a broad aspect, the present invention is a downhole hydraulic multiplexer, which is comprised of one or more piloted shuttle valves (14), and method of using. The invention takes one or more input signals from a surface control panel or computer (86), said signals may be electric or hydraulic, and converts said signals into a plurality of pressurized hydraulic output channels. The invention is shown in a variety of preferred embodiments, including a tubing deployed version, a wireline retrievable version, and a version residing in the wall of a downhole completion tool. Also disclosed is the use of multiple shuttle valves used in parallel or in series to embody a downhole hydraulic fluid multiplexer, controllable by and reporting positions of said shuttle valves to said surface control panel or computer.

L'invention porte en général sur un multiplexeur hydraulique de fond de puits comportant une ou plusieurs vannes à plusieurs voies pilotées (14) et ses procédés d'utilisation. L'invention prévoit la production de signaux électriques ou hydrauliques émis par un panneau de commande ou un ordinateur de surface (86) se traduisant par l'alimentation en fluide hydraulique d'une série d'orifices de sortie. L'invention, qui comporte plusieurs variantes préférées dont une version empruntant la colonne de production, et une version placée dans la paroi d'un outil d'achèvement de fond de puits, porte en outre sur l'utilisation de vannes à plusieurs voies montées en parallèle ou en série constituant un multiplexeur de liquide hydraulique de fond de puits pilotable depuis un panneau de commande ou un ordinateur de surface et leur communiquant en retour la position desdites vannes.

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