New maturation parameters based on naphthalene and phenanthrene isomerization and dealkylation processes aimed at improved classification of crude oils (Southeastern Pannonian Basin, Serbia)

Geochemistry International - Tập 45 - Trang 781-797 - 2007
K. Stojanović1,2, Br. Jovančićević3,2, Dr. Vitorovi3,2, G. S. Pevneva4, Ju. A. Golovko4, A. K. Golovko4
1Department of Medicine, University of Belgrade, Belgrade, Yugoslavia
2Center of Chemistry, IChTM, Belgrade, Serbia and Montenegro
3Department of Chemistry, University of Belgrade, Belgrade, Yugoslavia
4Institute of Petroleum Chemistry, Tomsk, Russia

Tóm tắt

Aiming at improved classification of crude oils, naphthalene and phenanthrene isomerization and dealkylation processes were considered in detail as a possible basis to select new maturation parameters. Crude oils originating from the Banat depression (Southeastern Pannonian Basin, Serbia) were used as objects of our study. Four new maturation parameters are proposed in this paper. Two of them are based on dimethylnaphthalene (DMN) and trimethylnaphthalene (TMN) isomerization reactions: DNx = (1,3-DMN + 1,6-DMN)/(1,4-DMN + 1,5-DMN) and TNy = (1,3,6-TMN + 1,3,7-TMN)/(1,3,5-TMN + 1,4,6-TMN). The other two are based on demethylation of dimethyl-and trimethylphenanthrenes (DMP and TMP) into corresponding methylphenanthrenes (MP): MDR = ΣMP/ΣDMP and MTR = ΣMP/ΣTMP. The new parameters’ advantageous applicability was demonstrated by factor analysis, comparing them with maturation parameters known from literature.

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