Geochemical characteristics of crude oils from the Sharara-C oil field, Murzuq Basin, Southwestern Libya
Samo za registrovane korisnike
2023
Autori
Saheed, Ramadan Musbah M.Šolević Knudsen, Tatjana
Faraj, Musbah Abduljalil M.
Nytoft, Hans Peter
Jovančićević, Branimir
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Crude oil samples from the Sharara-C oil field (Concession NC-115, Murzuq Basin, SW Libya) were analysed by organic geochemical methods in order to infer the geochemical characteristics of their respective source rocks. Aromatic hydrocarbons were analysed by gas chromatography – mass spectrometry (GC-MS), and gas chromatography – tandem mass spectrometry (GC-MS-MS) was used to analyse saturated biomarkers. The Sharara-C oils are interpreted to have been generated by marine shales containing mixed terrigenous and marine organic materials deposited in an intermediate (suboxic) environment. Age-specific biomarker ratios indicated that the oils are older than Cretaceous, and maturation-related parameters pointed to their high thermal maturity. Consistent with previous studies, source rocks are inferred to be “hot” shales in the Lower Silurian Tanezzuft Formation. Almost all the parameter ratios calculated varied over a very narrow range, indicating that the investigated oils were compositi...onally similar. The only significant difference that was noted concerned the sterane/hopane ratios whose variation suggested that there was some variability in the composition of the source organic material. The organic geochemical parameters determined for the Sharara-C crude oils were compared with published data on other crude oils from Concession NC-115. Almost all the parameters agreed well with previously published data on oils from this part of the Murzuq Basin. The greatest deviation concerned the values of some of the maturity parameters. This tended to confirm the conclusions of previous studies concerning the presence of a number of distinct oil families and sub-families in the Sharara oil field area which are genetically related but which have different maturities. © 2023 The Authors. Journal of Petroleum Geology.
Ključne reči:
biomarkers / crude oil / GC-MS / GC-MS-MS / Libya / Murzuq Basin / NC-115 Concession / petroleum geochemistry / Sharara-C oil fieldIzvor:
Journal of Petroleum Geology, 2023, 46, 1, 103-123Izdavač:
- John Wiley and Sons Inc
Finansiranje / projekti:
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200026 (Univerzitet u Beogradu, Institut za hemiju, tehnologiju i metalurgiju - IHTM) (RS-MESTD-inst-2020-200026)
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200168 (Univerzitet u Beogradu, Hemijski fakultet) (RS-MESTD-inst-2020-200168)
- The National Oil Corporation (NOC) of Libya (Reference number: 4354)
DOI: 10.1111/jpg.12832
ISSN: 0141-6421; 1747-5457
WoS: 000901622000004
Scopus: 2-s2.0-85144605642
Institucija/grupa
IHTMTY - JOUR AU - Saheed, Ramadan Musbah M. AU - Šolević Knudsen, Tatjana AU - Faraj, Musbah Abduljalil M. AU - Nytoft, Hans Peter AU - Jovančićević, Branimir PY - 2023 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/5651 AB - Crude oil samples from the Sharara-C oil field (Concession NC-115, Murzuq Basin, SW Libya) were analysed by organic geochemical methods in order to infer the geochemical characteristics of their respective source rocks. Aromatic hydrocarbons were analysed by gas chromatography – mass spectrometry (GC-MS), and gas chromatography – tandem mass spectrometry (GC-MS-MS) was used to analyse saturated biomarkers. The Sharara-C oils are interpreted to have been generated by marine shales containing mixed terrigenous and marine organic materials deposited in an intermediate (suboxic) environment. Age-specific biomarker ratios indicated that the oils are older than Cretaceous, and maturation-related parameters pointed to their high thermal maturity. Consistent with previous studies, source rocks are inferred to be “hot” shales in the Lower Silurian Tanezzuft Formation. Almost all the parameter ratios calculated varied over a very narrow range, indicating that the investigated oils were compositionally similar. The only significant difference that was noted concerned the sterane/hopane ratios whose variation suggested that there was some variability in the composition of the source organic material. The organic geochemical parameters determined for the Sharara-C crude oils were compared with published data on other crude oils from Concession NC-115. Almost all the parameters agreed well with previously published data on oils from this part of the Murzuq Basin. The greatest deviation concerned the values of some of the maturity parameters. This tended to confirm the conclusions of previous studies concerning the presence of a number of distinct oil families and sub-families in the Sharara oil field area which are genetically related but which have different maturities. © 2023 The Authors. Journal of Petroleum Geology. PB - John Wiley and Sons Inc T2 - Journal of Petroleum Geology T1 - Geochemical characteristics of crude oils from the Sharara-C oil field, Murzuq Basin, Southwestern Libya VL - 46 IS - 1 SP - 103 EP - 123 DO - 10.1111/jpg.12832 ER -
@article{ author = "Saheed, Ramadan Musbah M. and Šolević Knudsen, Tatjana and Faraj, Musbah Abduljalil M. and Nytoft, Hans Peter and Jovančićević, Branimir", year = "2023", abstract = "Crude oil samples from the Sharara-C oil field (Concession NC-115, Murzuq Basin, SW Libya) were analysed by organic geochemical methods in order to infer the geochemical characteristics of their respective source rocks. Aromatic hydrocarbons were analysed by gas chromatography – mass spectrometry (GC-MS), and gas chromatography – tandem mass spectrometry (GC-MS-MS) was used to analyse saturated biomarkers. The Sharara-C oils are interpreted to have been generated by marine shales containing mixed terrigenous and marine organic materials deposited in an intermediate (suboxic) environment. Age-specific biomarker ratios indicated that the oils are older than Cretaceous, and maturation-related parameters pointed to their high thermal maturity. Consistent with previous studies, source rocks are inferred to be “hot” shales in the Lower Silurian Tanezzuft Formation. Almost all the parameter ratios calculated varied over a very narrow range, indicating that the investigated oils were compositionally similar. The only significant difference that was noted concerned the sterane/hopane ratios whose variation suggested that there was some variability in the composition of the source organic material. The organic geochemical parameters determined for the Sharara-C crude oils were compared with published data on other crude oils from Concession NC-115. Almost all the parameters agreed well with previously published data on oils from this part of the Murzuq Basin. The greatest deviation concerned the values of some of the maturity parameters. This tended to confirm the conclusions of previous studies concerning the presence of a number of distinct oil families and sub-families in the Sharara oil field area which are genetically related but which have different maturities. © 2023 The Authors. Journal of Petroleum Geology.", publisher = "John Wiley and Sons Inc", journal = "Journal of Petroleum Geology", title = "Geochemical characteristics of crude oils from the Sharara-C oil field, Murzuq Basin, Southwestern Libya", volume = "46", number = "1", pages = "103-123", doi = "10.1111/jpg.12832" }
Saheed, R. M. M., Šolević Knudsen, T., Faraj, M. A. M., Nytoft, H. P.,& Jovančićević, B.. (2023). Geochemical characteristics of crude oils from the Sharara-C oil field, Murzuq Basin, Southwestern Libya. in Journal of Petroleum Geology John Wiley and Sons Inc., 46(1), 103-123. https://doi.org/10.1111/jpg.12832
Saheed RMM, Šolević Knudsen T, Faraj MAM, Nytoft HP, Jovančićević B. Geochemical characteristics of crude oils from the Sharara-C oil field, Murzuq Basin, Southwestern Libya. in Journal of Petroleum Geology. 2023;46(1):103-123. doi:10.1111/jpg.12832 .
Saheed, Ramadan Musbah M., Šolević Knudsen, Tatjana, Faraj, Musbah Abduljalil M., Nytoft, Hans Peter, Jovančićević, Branimir, "Geochemical characteristics of crude oils from the Sharara-C oil field, Murzuq Basin, Southwestern Libya" in Journal of Petroleum Geology, 46, no. 1 (2023):103-123, https://doi.org/10.1111/jpg.12832 . .