Critical evaluation higher asphaltene onset point (h-AOP) and lower asphaltene onset point (l-AOP) and comparison with various thermodynamic models predictions Critical evaluation higher asphaltene onset point (h-AOP) and lower asphaltene onset point (l-AOP) and comparison with various thermodynamic models predictions Αποτίμηση των σημείων απόθεσης ασφαλτενίων και σύγκριση με τις προβλέψεις θερμοδυναμικών μοντέλων Μεταπτυχιακή Διατριβή Master Thesis 2021-10-212021enAsphaltene deposition is a challenging problem in the oil industry in many regions around the world. Due to the tendency of this petroleum fraction it precipitates and deposits in the wellbore, near wellbore region, and surface facilities, as a result of changes in pressure, temperature, and composition. Prediction of asphaltene phase behavior is important in order to avoid possible problems that can occur with their deposition. The aim of this thesis is to compare predictions of asphaltene phase behavior of two thermodynamic models, PC-SAFT and CPA. For such purpose commercial software HydraFLASH and Multiflash were used. The differences between models’ prediction of asphaltene phase behavior was investigated for both lower and upper asphaltene phase boundary.http://creativecommons.org/licenses/by/4.0/Πολυτεχνείο Κρήτης::Σχολή Μηχανικών Ορυκτών ΠόρωνLubarda_Darja_MSc_2021.pdfChania [Greece]Library of TUC2021-10-21application/pdf3.3 MBfree Lubarda Darja Lubarda Darja Pasadakis Nikos Πασαδακης Νικος Gaganis Vasileios Γαγανης Βασιλειος Tohidi, Bahman Mousavi Ramin Πολυτεχνείο Κρήτης Technical University of Crete Asphaltenes