Technical Paper: Validation of OLGA HD Against Transient and Pseudotransient Experiments from the SINTEF Large Diameter High Pressure Flow-Loop

Society: Other
Paper Number: BHR-2015-G4
Presentation Date: 2015


In this paper we have compared the OLGA HD stratified flow model against transient ramp-up and pseudo transient experiments from a Statoil funded experimental campaign performed at the SINTEF Multiphase Flow Laboratory. The experiments were designed to specifically target the transition point from low to high liquid holdup; the accumulation point. We have explained how the removal of the liquid, when the gas flow is increased to inside the multiple holdup solution region, can be described by a steady state fully developed flow approximation. OLGA HD showed excellent predictions compared to the accumulation point experiments. We have also compared the time needed to remove the liquid for a fully transient simulation of experiments with ramp-up into the multiple holdup solution region. A retuned version of OLGA HD, presented in [1], performed well also on the experiments where OLGA 2014.1 HD overpredicted the time needed to remove the liquid.

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