Method and system for stepwise varying fluid flow in a well

Details Method and system for stepwise varying fluid flow in a well Method and system for stepwise varying fluid flow in a well

E - Fixed Constructions

21

B

E21B 34/06 (2006.01) E21B 34/00 (2006.01)

Patent

CA 2414730

A method for stepwise varying fluid flow in a well utilizes a plurality of downhole valves which have orifices of different sizes in the valve bodies, so that fluid flow can be varied by partially closing one or more valves. The method may be used for testing gas wells such that the wellbore storage delays caused by gas compression and/or expansion in the production tubing are minimized.

Cette invention concerne un procédé pour modifier progressivement l'écoulement d'un fluide dans un puits au moyen de plusieurs vannes de fond dotées d'orifices de différentes tailles dans les corps de vannes, de sorte que l'écoulement du fluide peut être modifié en fermant en partie une ou plusieurs vannes. Ce procédé peut être utilisé pour tester des puits de gaz afin de réduire au minimum les retards de stockage du puits de forage provoqués par la compression et/ou la détente du gaz dans la colonne de production.

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