IIC Journal of Innovation 16th Edition | Page 50

Design and Implementation of a Digital Twin for Live Petroleum Production Optimization
treated separately from stable states of operation . Figures 6 and 7 respectively represent the use of box plots , and normalization of data , for outlier detection and identification of stable states .
Downhole Pressure
Separator Pressure
Fig . 6 : Box plots indicating distribution of change in measured variables as a result of set-point ( gas injection rate ) changes .
Fig . 7 : Identification of stable operating states through normalization .
Labeling Events : When assets undergo gradual or prolonged states of abnormal behavior , the normalization filters may not be sufficient to identify and isolate such time zones . A monitoring platform that facilitates labeling can be a great tool . In the use case presented in this paper such
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