ABSTRACT

There are many sources of uncertainty in multiphase fluid flow models. However, most models are deterministic. One of the sources of uncertainty is closure relationships. In this paper, we present a wrap-around uncertainty propagation tool designed to study and quantify the impact of closure relationship uncertainties on multiphase flow model predictions. As a case study, we examined the impact of slug length uncertainty on pressure drop and liquid holdup predictions of Tulsa University Fluid Flow Projects (TUFFP) Unified Model(1) for two-phase vertical flows. The results suggest that a ± 50% slug length uncertainty can result up to 40% uncertainty in pressure drop predictions for some operating conditions, and almost no uncertainty for others.

Keywords:
bhr group 2010, sensitivity, upstream oil & gas, flow model, multiphase flow, superficial velocity, production monitoring, holdup, liquid holdup prediction, slug length uncertainty
Subjects:
Well & Reservoir Surveillance and Monitoring, Reservoir Fluid Dynamics, Information Management and Systems, Production logging, Multiphase flow
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2010. BHR Group 2010 Multiphase 7
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