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Preliminary Source Rock Evaluation and Hydrocarbon Generation Potential of the Tithonian–Berriasian Interval in the Zagros Basin, Iraq: Organic Geochemical Evaluation and 1D Basin Modeling Approach
Version 1
: Received: 6 July 2024 / Approved: 7 July 2024 / Online: 8 July 2024 (08:32:02 CEST)
How to cite:
Gharib, A. F. Preliminary Source Rock Evaluation and Hydrocarbon Generation Potential of the Tithonian–Berriasian Interval in the Zagros Basin, Iraq: Organic Geochemical Evaluation and 1D Basin Modeling Approach. Preprints2024, 2024070558. https://doi.org/10.20944/preprints202407.0558.v1
Gharib, A. F. Preliminary Source Rock Evaluation and Hydrocarbon Generation Potential of the Tithonian–Berriasian Interval in the Zagros Basin, Iraq: Organic Geochemical Evaluation and 1D Basin Modeling Approach. Preprints 2024, 2024070558. https://doi.org/10.20944/preprints202407.0558.v1
Gharib, A. F. Preliminary Source Rock Evaluation and Hydrocarbon Generation Potential of the Tithonian–Berriasian Interval in the Zagros Basin, Iraq: Organic Geochemical Evaluation and 1D Basin Modeling Approach. Preprints2024, 2024070558. https://doi.org/10.20944/preprints202407.0558.v1
APA Style
Gharib, A. F. (2024). Preliminary Source Rock Evaluation and Hydrocarbon Generation Potential of the Tithonian–Berriasian Interval in the Zagros Basin, Iraq: Organic Geochemical Evaluation and 1D Basin Modeling Approach. Preprints. https://doi.org/10.20944/preprints202407.0558.v1
Chicago/Turabian Style
Gharib, A. F. 2024 "Preliminary Source Rock Evaluation and Hydrocarbon Generation Potential of the Tithonian–Berriasian Interval in the Zagros Basin, Iraq: Organic Geochemical Evaluation and 1D Basin Modeling Approach" Preprints. https://doi.org/10.20944/preprints202407.0558.v1
Abstract
The hydrocarbon generation potential of Chia Gara strata and their genetic link with produced oils from the Zagros basin are still not comprehensively investigated. Forty-seven rock samples from the Tithonian–Berriasian interval were subjected to geochemical analyses to infer organic matter enrichment, hydrocarbon potential, thermal maturity, and timing for hydrocarbon generation/expulsion and their implications regarding upcoming petroleum explorations in the Zagros basin. The results showed that the Chia Gara rock samples have fair to very-good generation potential, as confirmed by higher total organic carbon (TOC=0.68–3.95 wt%) and Rock-Eval (S1+S2=3.37–8.52 mg HC/g rock). The hydrogen index (HI=171–462) and Rock-Eval Tmax over 430 °C support the presence of Types II and mixed Types II/III kerogen. These results confirm the high generation potential of the Chia Gara Formation in the study region. 1D basin models of the KK–109 well show that over 55% of kerogens were converted into oil in the Cretaceous (77–67 Ma). Expulsion started from the Miocene until now (22–0 Ma), consistent with 0.71–0.80 of modeled Easy%Ro and 55–80 %TR. Consequently, this project confirms the potential oil expulsion from the Chia Gara Formation, which can be a resource for upcoming hydrocarbon investigation in the Zagros basin, Iraq.
Keywords
Tithonian–Berriasian; Chia Gara Formation; Zagros Basin; Basin modeling
Subject
Environmental and Earth Sciences, Geochemistry and Petrology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
