Direct proportional surface control system for downhole choke

Wells – Processes – Operating valve – closure – or changeable restrictor in a well

Reexamination Certificate

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Details

C166S375000, C166S319000, C166S066600

Reexamination Certificate

active

11403039

ABSTRACT:
A direct proportional control system for remotely controlling actuation of a tool. A well control system includes an actuator for a downhole well tool, the actuator including an actuator member which displaces to operate the well tool. A control system member is positioned at a remote location. A displacement of the control system member is proportional to a displacement of the actuator member.

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Search Report for PCT/US05/13220.

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