Reliable wax predictions for flow assurance
authors Coutinho, JAP; Edmonds, B; Moorwood, T; Szczepanski, R; Zhang, XH
nationality International
journal ENERGY & FUELS
keywords ISOTHERMAL FLASH PROBLEM; SOLID-LIQUID EQUILIBRIA; SEA CRUDE OILS; HYDROCARBON MIXTURES; THERMODYNAMIC MODEL; ALKANE MIXTURES; DIESEL FUELS; PRECIPITATION; CLOUD; PETROLEUM
abstract A number of wax models currently in use by the oil industry are based on parameters that were empirically determined to match available data for black oils. These data are often not very precise. The recently developed predictive local composition model is, however, a predictive, theoretically well-defined model based on high-accuracy thermodynamic data. The paper describes how the predictive local composition model can be used in conjunction with conventional cubic equations of state to perform wax equilibrium calculations for black oils. Examples are given that show how the model can predict both wax appearance temperature and the amount of wax precipitated at varying temperatures with or without detailed n-paraffin analyses. The examples presented include the effect of pressure on live oils. The improved thermodynamic modeling of wax formation will allow for better prediction of wax deposition rates for flow assurance.
publisher AMER CHEMICAL SOC
issn 0887-0624
year published 2006
volume 20
issue 3
beginning page 1081
ending page 1088
digital object identifier (doi) 10.1021/ef050082i
web of science category Energy & Fuels; Engineering, Chemical
subject category Energy & Fuels; Engineering
unique article identifier WOS:000237576500029
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  impact metrics
journal analysis (jcr 2019):
journal impact factor 3.421
5 year journal impact factor 3.715
category normalized journal impact factor percentile 58.362
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