Flow-biased sequencing valve

Details Flow-biased sequencing valve Flow-biased sequencing valve

2007-12-25

2007-12-25

Gay, Jennifer H. (Department: 3676)

Wells

Processes

Operating valve, closure, or changeable restrictor in a well

C166S312000, C166S386000, C166S319000

Reexamination Certificate

active

11152480

ABSTRACT:
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 to bias the sequencing valve to remain in the second state.

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