Flow-biased sequencing valve

Details Flow-biased sequencing valve Flow-biased sequencing valve

E - Fixed Constructions

21

B

E21B 34/06 (2006.01) E21B 21/08 (2006.01) E21B 47/00 (2006.01)

Patent

CA 2510214

A technique that is usable with a well includes providing a sequencing valve to in a first state to communicate a first flow through a first port of the valve and in a second state close fluid communication through the first port. The technique includes communicating a second flow through an orifice of the sequencing valve during the second state of the valve and using a pressure drop across the orifice the bias the sequencing valve to remain in the second state.

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