Actuation system for a downhole tool

E - Fixed Constructions – 21 – B

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Details

E21B 47/00 (2006.01) E21B 23/00 (2006.01) E21B 33/127 (2006.01) E21B 34/06 (2006.01) E21B 41/00 (2006.01) E21B 43/12 (2006.01) E21B 47/10 (2006.01) E21B 49/08 (2006.01)

Patent

CA 2296108

Downhole tools (15) and systems can be actuated chemically by placing a chemical sensor (14) downhole and introducing a chemical slug (16) into fluids being pumped downhole. When the slug reaches the sensor a reaction in the sensor may be employed to trigger an event (e.g., actuation) or may cause a count to increase by one on its way to a full count an actuation of a tool or a system downhole.

On décrit des outils (15) et des systèmes fond de trou qui peuvent être activés chimiquement au moyen d'un capteur chimique (14) placé dans un puits et par injection d'un bouchon chimique (16) dans des liquides pompés dans le puits. Une fois le bouchon parvenu au capteur, une réaction dans le capteur peut être mise en oeuvre pour déclencher un événement (p. ex. activation) ou pour augmenter d'une unité le décompte vers le compte complet ou l'activation d'un outil ou d'un système dans le puits.

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