The HYPER program has been written as part of the HYPER JIP, launched through the Industry Technology Facilitator (ITF) in 2002, and funded by BG Group, ConocoPhillips, Halliburton and Marathon. The model has been developed to allow modelling of the formation of gas hydrates in multiphase pipelines and incorporates correlations based on data from a dedicated series of hydrate formation experiments at laboratory scale. The results of these tests have been used to determine expressions for the rate of hydrate formation and the delay between the moment of the pipeline operating conditions entering the zone of hydrate stability and the onset of hydrate formation.

This paper will present the results of some of the tests performed to generate the correlations used in the HYPER model and will compare this test data with that published by other workers. The paper will briefly describe the manner in which the correlations are used within the HYPER model to predict hydrate formation, along with other models and assumptions used in the construction of the model. Finally the paper will present the validation of the model by comparison with published data from various flow loop tests.

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