TY - JOUR
T1 - Saturated biomarkers in the estimation of organic geochemical homogeneity of crude oils from four oil fields in Libya
AU - Saheed, Ramadan Musbah M.
AU - Šolević-Knudsen, Tatjana
AU - Faraj, Musbah Abduljalil M.
AU - Nikolovski, Zlatko
AU - Nytoft, Hans Peter
AU - Jovančićević, Branimir
N1 - Funding Information:
Acknowledgements. The National Oil Corporation (NOC) of Libya and the Libyan Petroleum Institute (Tripoli, Libya) are thanked for the samples provided for this research and for the permission to publish the results. This work was financially supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia (Grant No. 451-03-68/2020-14/200026 and Contract number: 451-03-68/2020-14/200168).
Funding Information:
The National Oil Corporation (NOC) of Libya and the Libyan Petroleum Institute (Tripoli, Libya) are thanked for the samples provided for this research and for the permission to publish the results. This work was financially supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia (Grant No. 451-03-68/2020-14/200026 and Contract number: 451-03-68/2020-14/200168).
Publisher Copyright:
© 2020 Serbian Chemical Society. All rights reserved.
PY - 2020
Y1 - 2020
N2 - Seven crude oils from four oil fields in the Sirte and Murzuq Basins in Libya were investigated in order to estimate their organic geochemical homogeneity. Saturated biomarkers (n-alkanes and isoprenoids) were analyzed using gas chromatography-mass spectrometry (GC-MS). The parameters calculated from the distributions of n-alkanes and isoprenoid aliphatic alkanes, pristane and phytane were used to interpret the organic geochemical characteristics of the oils. Based on the high relative concentration of lower n-alkane homologues in the C11-C16range and high API values, the oils were classified as light oils. These results also implied that the oils were not biodegraded. The parameters calculated from the distributions of saturated biomarkers indicated that all investigated oils were generated from source rocks containing organic matter of a similar marine origin but with a contribution of terrestrial organic matter. The results also demonstrated that these source rocks were deposited in an oxic environment. The same source rock or the same type of source rocks for all seven samples were postulated. It was concluded that, if the crude oils from these distant basins originated from the same source rocks, they must have had different lengths of their migration pathways.
AB - Seven crude oils from four oil fields in the Sirte and Murzuq Basins in Libya were investigated in order to estimate their organic geochemical homogeneity. Saturated biomarkers (n-alkanes and isoprenoids) were analyzed using gas chromatography-mass spectrometry (GC-MS). The parameters calculated from the distributions of n-alkanes and isoprenoid aliphatic alkanes, pristane and phytane were used to interpret the organic geochemical characteristics of the oils. Based on the high relative concentration of lower n-alkane homologues in the C11-C16range and high API values, the oils were classified as light oils. These results also implied that the oils were not biodegraded. The parameters calculated from the distributions of saturated biomarkers indicated that all investigated oils were generated from source rocks containing organic matter of a similar marine origin but with a contribution of terrestrial organic matter. The results also demonstrated that these source rocks were deposited in an oxic environment. The same source rock or the same type of source rocks for all seven samples were postulated. It was concluded that, if the crude oils from these distant basins originated from the same source rocks, they must have had different lengths of their migration pathways.
KW - Murzuq Basin
KW - Oil-oil correlation
KW - Sirte Basin
UR - http://www.scopus.com/inward/record.url?scp=85098271268&partnerID=8YFLogxK
U2 - 10.2298/JSC200501055S
DO - 10.2298/JSC200501055S
M3 - Article
AN - SCOPUS:85098271268
SN - 0352-5139
VL - 85
SP - 1489
EP - 1499
JO - Journal of the Serbian Chemical Society
JF - Journal of the Serbian Chemical Society
IS - 11
ER -