PVT-generated Correlations of Heavy Oil Properties

Abstract

Pressure-volume-temperature (PVT) properties are necessary to reservoir engineering calculations in porous media and it is important for calculations in pipeline as well. This work presents a new set of correlation for estimating Iranian Crude oils properties based on some experimental data. Whenever there is no representative experimental PVT data, these correlations can be used for oils of API ranging between 15 and 30. New correlations was developed to calculate oil formation volume factor (Bo), bubble point pressure (Pb), and solution gas oil ratio (Rs). Finally, a comparison is made between these correlations and other published correlations such as Standing, Vazquez and Beggs, Glaso, Farshad et al., Al Marhoun, Petrosky and Farshad, and Hanafi et al. and it is found out that the new correlations are more accurate than the other ones.

Keywords:

• bubble point pressure
• correlation
• oil formation volume factor
• PVT
• solution gas oil ratio

ACKNOWLEDGEMENTS

The authors thank Petroleum Engineering Dep., Islamic Azad University, Firoozabad Branch, NIGC, Zagros Co, and computer modeling group for permission to publish this paper and for providing the necessary time and support needed help to conduct the project.