Annulus pressure operated well monitoring

Communications: electrical – Wellbore telemetering or control – Including specified power transmission feature or source

Reexamination Certificate

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Details

C166S065100, C166S066500

Reexamination Certificate

active

07012545

ABSTRACT:
A method is provided for monitoring a well. In a described embodiment, the method uses annulus pressure to communicate between a downhole system and a remote location. The method may use intermittent electrical power generated by changes in annulus pressure to power the downhole system. Various sensors and well tools may be monitored and actuated by the downhole system, and acquired data may be transmitted to the remote location.

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patent: 4711305 (1987-12-01), Ringgenberg
patent: 4736798 (1988-04-01), Zunkel
patent: 5839508 (1998-11-01), Tubel et al.
patent: 6747569 (2004-06-01), Hill et al.

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