Apparatus to actuate downhole tool

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 7/06 (2006.01) E21B 23/04 (2006.01) E21B 23/06 (2006.01) E21B 29/06 (2006.01) E21B 33/1295 (2006.01) E21B 34/06 (2006.01) E21B 47/024 (2006.01)

Patent

CA 2403293

The invention provides an apparatus (300, 400) for actuating a downhole tool (700) by utilizing a pressure differential created by fluid flowing through a restriction in a conduit (315). The conduit is in communication with a pressure sensing line (400) that is selectively exposable to areas of near the restriction in the conduit (316, 317) having different pressures. By exposing the pressure sensing line to a portion of the conduit having a predetermined pressure therein, the pressure sensing line causes actuation of a hydraulic tool therebelow. The apparatus is of particular use for a single trip sidetrack system in combination with an MWD-tool, a whipstock, and an anchor packer without a bypass valve.

Un appareil (300, 400) servant à actionner un outil de fond (700) utilise une différence de pression créée par du fluide s'écoulant dans une conduite (315). La conduite communique avec une ligne (400) détectant la pression qui peut être sélectivement exposée à des zones de la conduite (316, 317) ayant des pressions différentes. Le fait d'exposer la ligne détectant la pression à une partie de la conduite ayant une pression interne prédéterminée provoque la mise en marche d'un outil hydraulique situé sous cette dernière.

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