Comparision Study of Published PVT Correlations and its Application to Estimate Reservoir Fluid Properties for Iranian Oil Rerservoir

Bubble point pressure, gas oil ratio, viscosity and oil formation volume factor are primary importance in material balance calculations, analysis of well performance, and etc.. Standing proposed a correlation for determining the formation volume factor and bubble point pressure. A total of 105 experimentally determined data points on 22 different crude oil gas mixtures from California fields were utilized in arriving at the correlation. The reliability of the literature correlations was tested in order to evaluate their performance in dealing with Iranian oils and to determine the most suitable correlation for bubble point pressure, GOR, viscosity and oil FVF. A qualitative analysis was carried out using the standard error of estimate, the average percent relative error,and etc.. Even though the Standing and Al-Marhoun correlations were found to be accurate to certain extent comparing with other correlations, they were in general not suitable to be used in estimation of the above mentioned Iranian oil properties.

Keywords:

Relative error , Bubble point pressure , Hydrocarbons , Modeling , Phase performance