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Titre: Chemical characterization of asphaltenes deposits from Hassi Messaoud field
Auteur(s): Behnous, Dounya
Bouhadda, Youcef
Moffatt, Brian
Zeraibi, Noureddine
Coutinho, João A.P.
Mots-clés: Asphaltenes
Characterization
Deposit
Solid NMR. Raman
Date de publication: 2022
Editeur: Elsevier
Collection/Numéro: Fuel/ Vol.328 (2022);pp. 1-12
Résumé: The precipitation and deposition of asphaltenes are complex phenomena that reduce the efficiency in oil production operations. In this study, spectroscopic and thermal methods were used for the characterization of asphaltene samples extracted from deposits belonging to different locations in the Hassi Messaoud field. Structural parameters and the chemical structure of the studied asphaltenes were determined using 13C solid nuclear magnetic resonance (NMR), X-ray diffraction and Raman spectroscopy. The thermal behavior of the asphaltenes studied was examined using differential scanning calorimetry. The results obtained suggest that island is the predominent architecture for the asphaltenes studied with an average of 7 to 8 fused rings and aliphatic length chain of about 3–4 carbons. The number of aromatic sheets in a stacked cluster (N) is between 7 and 8 sheets. The aromatic sheet diameter of the four samples ranges from 12.18 to 15.52 Å with an average interlayer distance between aromatic sheets of 3.52 Å and an average interchain layer distance of 4.48 Å
URI/URL: https://doi.org/10.1016/j.fuel.2022.125305
https://www.sciencedirect.com/science/article/pii/S0016236122021408
http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/10148
ISSN: 00162361
Collection(s) :Publications Internationales

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