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Title: Operational Experience With Multiphase Meters At Vigdis
Author: Odd-Petter Kalsaas, Fluenta As, Espen Egner
Source: 1999 North Sea Flow Measurement Workshop
Year Published: 1999
Abstract: Two identical 8 MPFM 1900 VI were delivered to the Vigdis Field Dev. project in January 1996. The meters are installed on the Snorre platform, one on each of the main flow lines from the Vigdis satellites, and were commissioned for use in October 1997. Based on an unexpected shift in the calibration of the capacitance sensor, observed and corrected during commissioning, Fluenta recommended to Saga Petroleum that the two meters should be upgraded from ceramic liners to the new PEEK open electrode construction. Saga agreed to this recommendation, and the job was performed during a two week planned shutdown in May 1998. The two multiphase meters were re-commissioned in first week of June 98. Further adjustments were done during the next months, in order to optimise the performance of the meters. MPFM measurements during a multirate test from all Vigdis wells are compared to test separator measurements in April 1999. Comparison between the multiphase meters, and the downstream separator measurements, now shows stabile and repeatable measurements well within Fluenta uncertainty specifications. This paper will report on the combined experiences of Saga Petroleum and Fluenta, both with respect to failure mode, repair, operational experience and the use of data.

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