A theoretical and numerical investigation of the pseudoskin factor

By Gui, P. | Zhang, C. | Cunha, L.B..
2008 .
7 p. ; 48-55

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A simple correlation for the viscosity of heavy oils from Liaohe Basin, NE China

2007 .
4 p. ; 8-11 , Transcripción del resumen publicado por el autor: Viscosity values (µ) were measured at different temperatures (40, 50, 60, 70, 80 and 90°C) for a set of dead oils from the Liaohe basin, NE China, covering a viscosity range from 76 to 34,590 mPa.s at 50°C. A good relationship emerges between temperature and viscosity and a corresponding viscosity-temperature correlation with a high coefficient was obtained for every oil sample. Detailed investigations revealed that µ (viscosity values at temperature T = 60, 70, 80 and 90°C) shows a strong function of µ50 (viscosity value at 50'C) in the form of µ = aµ50b in which the parameters a and b show a function of temperature [a =f(T) and b = f1(T)] with high coefficients. Therefore, a new simple correlation for predicting oil viscosity has been deduced as a function of temperature and µ50in the form of µ =(T) µ50f1(T) with only two input parameters: temperature and viscosity at 50°C. The validity of the model for Liaohe heavy oils has been tentatively confirmed by a set of experimental data from the laboratory of the Liaohe Oil Field with most errors less than 10% for the viscosity prediction at 100°C. The correlation reported in this paper may provide an alternative method to predict the viscosity for dead oils, especially for heavy oils with µ50 even up to 160,000 mPa·s in the Liaohe basin.

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A theoretical and numerical investigation of the pseudoskin factor

A simple correlation for the viscosity of heavy oils from Liaohe Basin, NE China