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Title: Virtual Flow Meter - Sensitivity Analysis
Author: Stian Tangen Roar Nilsen Kristian Holmas
Source: 2017 North Sea Flow Measurement Workshop
Year Published: 2017
Abstract: Virtual flow metering becomes increasingly reliable and accurate enough to be accepted as an option to the physical flow meter. In order to prove the concept and to get an objective measure about the accuracy and the sensitivity, Kongsberg Digital has developed a new method for validating the design and securing a better understanding of the varying relationships for the system. This method indicates which parameters are the most important for a virtual flow meter to give an optimal accuracy. By using the latest technology within multiphase flow simulation and dynamic process simulators, a digital twin (virtual plant) can be utilized to replicate the behavior for the entire production unit. A virtual flow meter is then connected to this solution, with the same data exchange used for the real plant. Utilizing this method, a controlled environment (i.e. the virtual plant) is obtained while keeping the real plant behavior in abnormal or failure modes. The sensitivity analysis then introduces known and traceable errors / malfunctions in the virtual plant and monitors the Virtual Flow Meters ability to handle abnormal measurements and signal failures.

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