Three PhaseWatcher Vx multiphase flowmeters have been installed on the Heidrun platform. It is shown how the Vx multiphase flowmeters are placed into the pipework and integrated into the measurement system on the platform. Much effort has been devoted to explain the influence of uncertainties in PVT data on the metrological multiphase flowmeter performance. Finally, some early test results are compared with corresponding test separator data. The conclusion is that the multiphase flowmeters function as intended, however, lack of PVT data has delayed the final set-up of the multiphase flowmeter.
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