Perforating gun assembly with auger to control wellbore...

E - Fixed Constructions – 21 – B

Patent

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E21B 17/22 (2006.01) E21B 43/119 (2006.01)

Patent

CA 2674362

A downhole tool used in the pressure isolation of adjacent subterranean formations. The downhole tool may comprise flow restriction devices along the outer circumference for impeding flow along the length of the tool. The tool may further comprise a perforating gun and an accumulator. Impeding flow along the length of the tool provides a dynamic flow restriction within the wellbore that precludes fluid flowing from one subterranean zone to an adjacent zone.

L'invention concerne un matériel d'extraction utilisé dans l'isolement de pression de formations souterraines adjacentes. Le matériel d'extraction peut comporter des dispositifs de restriction de flux situés le long de la circonférence externe et ralentir le flux le long de la longueur du matériel. Le matériel peut également comporter un perforateur et un accumulateur. Le ralentissement du flux le long de la longueur du matériel forme une restriction de flux dynamique dans le puits de forage qui empêche le fluide de circuler d'une zone souterraine à une zone adjacente.

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