Modeling of asphaltene precipitation utilizing Association Equation of State

► In this work, Association EOS was used for modeling of asphaltene precipitation. ► The model results were compared to other models and experimental data of 3 oil samples. ► The model results are in good agreement with experimental data. ► The effect of CO2 injection was investigated for oil samples. ► Results show that increasing CO2 content will increase asphaltene deposition.