Method and apparatus for testing and treatment of a...

E - Fixed Constructions – 21 – B

Patent

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E21B 49/08 (2006.01) E21B 19/22 (2006.01)

Patent

CA 2523768

A method and apparatus is used to test and/or treat individual production zones of a well in conjunction with a conventional coiled tubing unit. This method and apparatus allows testing and treatment of a well with production tubing in place. The return flowpath for formation fluids and/or treatment fluids is through the annulus between the coiled tubing and the production tubing. The preferred embodiment uses straddle packers, but alternative embodiments may use only a single inflatable packer.

Le procédé et l'appareil décrits servent à tester et/ou à traiter des zones individuelles de production d'un puits en conjonction avec un tube de production concentrique. Ce procédé et cet appareil permettent de tester et de traiter un puits avec une colonne de production en place. Le chemin d'écoulement en retour pour les fluides de formation et/ou de traitement passe à travers l'espace annulaire situé entre le tube de production concentrique et la colonne de production. Le mode préférentiel de réalisation utilise des garnitures doubles, mais d'autres modes de réalisation qui utilisent uniquement une garniture gonflable simple sont également possibles.

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