Saeid Ghasemi - Department of Chemical Engineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶-۸۳۱۱۱, Iran
Mohsen Mohammadi - Department of Chemical Engineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶-۸۳۱۱۱, Iran
Mohammad Reza Ehsani - Department of Chemical Engineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶-۸۳۱۱۱, Iran
Taraneh jafari behbahani - Research Institute of Petroleum Industry, RIPI, Tehran ۱۴۸۵۷-۳۳۱۱۱, Iran
Ali Reza Khaz’ali - Department of Chemical Engineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶-۸۳۱۱۱, Iran
Mahdi Sadeghi Naeeni - Institute of Petroleum Engineering, University of Tehran, P. O. Box ۱۱۱۵۵-۴۵۶۳, Tehran, Iran

Asphaltene precipitation and deposition have always been a major concern in the oil industry. In this study, asphaltene precipitation in a heavy live oil with high asphaltene content (10.5 wt% in stock tank oil) is modeled using PC-SAFT EoS. Since asphaltene content of the oil is high, despite previous researches both model’s parameters (aromaticity of aromatics + resins and aromaticity of asphaltene) were tuned simultaneously. The model shows good agreement with experimental data and the absolute average deviation is 22.81%.

Asphaltene precipitation, PC-SAFT EoS, Thermodynamic modeling, Characterization, Heavy oil, Aromaticity