Variable flow resistance system for use in a subterranean well

Details Variable flow resistance system for use in a subterranean well Variable flow resistance system for use in a subterranean well

E - Fixed Constructions

21

B

E21B 43/12 (2006.01) E21B 43/32 (2006.01)

Patent

CA 2740458

A variable flow resistance system can include a flow chamber through which a fluid composition flows in a well, the chamber having an inlet and an outlet. The fluid composition enters via the inlet in a direction which changes based on a ratio of desired to undesired fluid in the fluid composition. A well system can include a variable flow resistance system through which a fluid composition flows between a tubular string and a formation, the flow resistance system including a flow chamber through which the fluid composition flows, with only one chamber inlet. The fluid composition flows more directly from the inlet to an outlet as a ratio of desired to undesired fluid in the fluid composition increases. Another flow resistance system can include at least one structure which influences portions of the fluid composition which flow circuitously between the inlet and the outlet to maintain such circuitous flow.

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