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DTSTART:19700329T030000
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BEGIN:VEVENT
CREATED:20251029T133038Z
LAST-MODIFIED:20251029T133038Z
DTSTAMP:20260714T212739Z
UID:1784053659@tuc.gr
SUMMARY:Παρουσίαση Μεταπτυχιακής Εργασίας κ.
  Σπυρίδωνα Νόβα, Σχολή ΜΗΧΟΠ
LOCATION:Μ4 - Κτίριο ΜΗΧΟΠ, Μ4.003, ΔΙΑ ΖΩΣΗΣ
DESCRIPTION:https://www.tuc.gr/el/to-polytechnei
 o/ilektronikes-ypiresies/imerologio/
 imerologio-ekdiloseon-1?tx_tucevents
 2_tuceventsdisplay%5Baction%5D=show&
 tx_tucevents2_tuceventsdisplay%5Bcon
 troller%5D=Event&tx_tucevents2_tucev
 entsdisplay%5Bevent%5D=8170&cHash=f7
 e3878be38eb4df336fc2526e6197c2\nΤίτλ
 ος εργασίας: «Εντοπισμός και χαρακτη
 ρισμός ασφαλτενίων σε αργό πετρέλαιο
 .»\n  \n Τίτλος εργασίας στα αγγλικά
 : “Asphaltenes monitoring and charac
 terization in crude oil”\n  \n Τριμε
 λής εξεταστική επιτροπή\n 1. Nικόλαο
 ς Πασαδάκης, καθηγητής σχολής ΜΗΧΟΠ 
 (Επιβλέπων)\n 2. Δρ. Σταύρος Πισσαδά
 κης (FORTH-IESL)\n 3. Δρ. Ελευθερία 
 Αντωνίου, μέλος ΕΔΙΠ σχολής ΜΗΧΟΠ\n 
  \n ABSTRACT \n In this study, the a
 dsorption behavior of asphaltene fra
 ctions from Greek Prinos crude oil o
 nto calcite and dolomite mineral pow
 ders was investigated. Asphaltenes, 
 the heaviest and most polar componen
 ts of crude oil, are known for their
  complex structure, high aromaticity
 , and tendency to precipitate under 
 certain conditions, often leading to
  flow assurance issues. A modified v
 ersion of the IP143 method was emplo
 yed for the extraction of asphaltene
 s, using mineral powders derived fro
 m Greek source rocks as the adsorben
 ts. By allowing prolonged precipitat
 ion times in n-heptane, higher yield
 s were obtained, offering a more eff
 icient recovery route for surface-in
 teracting species. The experiment yi
 elded five distinct asphaltene fract
 ions: whole, bulk, normally adsorbed
 , heavily adsorbed, and irreversibly
  adsorbed. Analytical techniques inc
 luding CHNSO elemental analysis, Fou
 rier-transform infrared spectroscopy
  (FTIR), and mass balance assessment
 s were used for characterization. Re
 sults revealed a clear correlation b
 etween increasing polarity and stron
 ger surface adhesion to the mineral 
 substrate. Additionally, a trend of 
 decreasing carbon content was observ
 ed with increasing polarity. Notably
 , the use of tetrahydrofuran (THF) a
 s a solvent led to the unexpected fo
 rmation of a sludge-like residue, po
 tentially indicative of polymerizati
 on or strong complexation with the a
 sphaltenes—an occurrence not commonl
 y reported in the literature.\n Thes
 e findings not only deepen our under
 standing of asphaltene–mineral inter
 actions in carbonate reservoirs but 
 also provide a methodological framew
 ork for future studies focused on im
 proving reservoir wettability profil
 ing and asphaltene management strate
 gies in enhanced oil recovery (EOR) 
 operations.\n  \n
STATUS:CONFIRMED
ORGANIZER;RSVP=FALSE;CN=TUC;CUTYPE=TUC:mailto:webmaster@tuc.gr
DTSTART:20251103T120000
DTEND:20251103T130000
TRANSP:OPAQUE
CLASS:DEFAULT
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