Patent ID: 9658130
Date: 2017-05-23
CPC Classifications: E21B,G01M,G01V

Claim:
1. A monitoring system for a blowout preventer positionable about a wellbore, the blowout preventer comprising a housing for receiving a tubing and engagers to engage the tubular, the monitoring system comprising: a fiber optic cable comprising a blowout preventer cable and a communication cable, the blowout preventer cable positionable about the blowout preventer to receive data therefrom, the communication cable linkable between the blowout preventer portion and a surface unit to pass signals therebetween whereby blowout preventer events are detectable; and a processor to: analyze acoustic signals acquired by the blowout preventer cable during operation of the blowout preventer to identify an anomaly in operation of the blowout preventer, the analysis comprising identification a leak in the blowout preventer based on detection of an asymptotic decay of the acoustic signals after actuation of a piston of the blowout preventer.