The Corresponding-States Correlation for the Prediction of Crude Oil Undersaturated Densities

The Prediction of the Density of Undersaturated Crude Oil Using Multilayer Feed-Forward Back-Propagation Perceptron

“…Figure 3 shows that predicted values and real measured values are very close together. Table 4 shows a comparison of our results with four previously published works (Alani and Kennedy, 1960;Ahmed, 1998;Al-Marhoun, 2003;Azin et al, 2011). In the case of Al-Marhoun (2003), the mentioned correlations are indirect methods for calculating density; for instance, we used Al-Mahroun's correlation to calculate undersaturated isothermal compressibility and predict the density for P > P b .…”

“…Correlations such as StandingKatz (1942) and Alani-Kennedy (1960) are examples of this kind. Recently, a correlation was presented by Azin et al (2011) based on the previous work of Thomson et al (Thomson and Hankinson, 1979;Thomson et al, 1982) for the estimation of compressed fluid densities or the prediction of fluid densities at elevated pressures. We show that the model presented in this article has less error than both Azin et al (2011) and AlaniKennedy (1960).…”