20.500.12556/DiRROS-28553 Podatki o geokemični oceni tekočega ogljikovodika iz vrtine Ormož-1g (SV Slovenija) Dataset on geochemical assessment of liquid hydrocarbon from the Ormož-1g well (NE Slovenia) Študija proučuje organske geokemične značilnosti tekočega ogljikovodikovega vzorca iz vrtine Ormož-1g na severnem obrobju Ormoža (Hardek). Širše območje spada v Mursko-Zalski bazen severovzhodne Slovenije. Glavni cilj je bila ocena izvora ogljikovodika, njegove akumulacije in termične zrelosti z analizo biomarkerjev. Sestava vzorca je bila določena s plinsko kromatografijo. Vzorec ogljikovodika je bil frakcioniran na nasičeno in aromatsko frakcijo. Ti frakciji sta bili nadalje analizirani s plinsko kromatografijo–masno spektrometrijo (GC–MS), da se identificirajo in kvantificirajo specifični biomarkerji. Vzorec smo opredelili na podlagi API gostote 42,53° in analize biomarkerjev v nasičeni frakciji kot lahko nafto. Prevlada n-alkanov z visoko molekulsko maso in razmerje Pr/Ph = 1,83 nakazujeta suboksične morske sedimentacijske razmere, na katere je pomembno vplival tudi vnos kopenskega organskega materiala. Porazdelitveni vzorec steranov in razmerje izoprenoidi/n-alkani nakazujeta na mešani izvor organske snovi. Enakomerna porazdelitev n-alkanov, CPI indeks blizu 1, visoka stopnja izomerizacije steranov ter relativna vsebnost 3- in 2-metilfenantrenov skupaj kažejo na visoko termično zrelost. Dobljeni rezultati predstavljajo geokemično osnovo za nadaljnje analize ogljikovodikov v slovenskem delu Mursko-Zalskega bazena ter prispevajo k boljšemu razumevanju naftnega potenciala obravnavanega območja. This study presents the results of an organic geochemical characterisation of a liquid hydrocarbon sample from the Ormož-1g well in the Mura-Zala Basin, north-eastern Slovenia. The main objective was to assess the origin, depositional environment, and thermal maturity using biomarker analysis. The bulk composition of the sample was initially determined by gas chromatography. The hydrocarbon sample was then fractionated into saturates and aromatics. These fractions were analysed by gas chromatography–mass spectrometry (GC–MS) to identify and quantify specific biomarker compounds. Based on an API gravity of 42.53° and biomarker distribution of the saturated fraction, the sample is classified as light crude oil. The dominance of high molecular weight n-alkanes and a Pr/Ph ratio of 1.83 suggests suboxic marine depositional conditions with significant terrestrial organic matter input. The sterane distribution pattern and the isoprenoid/n-alkane ratio indicate a mixed origin of organic matter. The uniform distribution of n-alkanes, a CPI value close to 1, a high degree of sterane isomerisation and the relative abundance of 3- and 2-methylphenantherene collectively indicate high thermal maturity. These establish a geochemical framework for further hydrocarbon exploration in the Mura-Zala Basin and enhance the understanding of its petroleum potential. geokemija ogljikovodiki vrtina geochemistry hydrocarbons well true false false Slovenski jezik Angleški jezik Delo ni kategorizirano 2026-03-23 14:46:26 2026-03-23 15:06:03 2026-03-26 04:09:56 0000-00-00 00:00:00 2026 0 Ljubljana 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 272756483 ReadMe_en.txt ReadMe_en.txt 1 6CAC24D2CB66A1A8AC3662450F5AB84A 6f9127e5029e55138c4c727cd6ff0c04126ef5bc091800e1cf77526887e42fb5 f3383f98-26c2-11f1-aa40-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=42369 composition_Ormoz_1g_sample.csv composition_Ormoz_1g_sample.csv 1 5006891ABD218509E1F4FEE967206B38 ac287896f4165514eef325f9c8661600e9dd8a5e9e238ab524f8a6900402a436 ac9f507d-26c0-11f1-aa40-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=42365 Ormoz_1g.zip Ormoz_1g.zip 1 95AA7D2552BA6D0C6C51926013F6578A 90160e33e9bb09b27619de699ba889ca8d8ad06fdac4503731e90ab80a89c6ff 1be4ffa1-26c1-11f1-aa40-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=42366 Geološki zavod Slovenije 0 0 0