Evaluation of hydrocarbon potential and depositional environments of the Laffan Formation in the Binak Oilfield

Authors

1 Masters Student, Department of Petroleum Geology and Sedimentary Basin, Faculty of Earth Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran

2 Department of Petroleum Geology and Sedimentary Basin, Faculty of Earth Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran

Abstract

In this study, the hydrocarbon potential and depositional environments of the Laffan Formation in the Binak Oilfield is investigated. Rock-Eval pyrolysis results indicate that the Laffan Formation contains a mixed type II/III kerogen. Based on the classification of the source rock in terms of total organic carbon (TOC) content, the Laffan Formation can be classified as a good to very good source rock. According to the plots of S1+S2 versus TOC, the Laffan Formation has weak to excellent hydrocarbon potential in the Binak Oilfield. However, organic petrographic inspections showed that the main components of the organic matter are inertinite, bituminite along subordinate amounts of amorphous organic matter. The predominance of Inertinites together with minor Liptinites confirms the type II and IV kerogen mixture in the studied formation. It is noteworthy that the presence of bituminite has a noticeable impact on the results of Rock-Eval pyrolysis. Therefore, in this study, the organic geochemistry of the Laffan Formation was evaluated using organic petrographic results. Accordingly, it is concluded that the organic matter in the Laffan Formation consists mainly of inertinite and bituminite with minor amounts of Liptinites. Therefore, significant hydrocarbon generation potential cannot be expected from this formation in the Binak Oilfield. Considering the public shape of the chromatograms obtained from PY-GC analysis, which show that the initial depositional environment of the Laffan Formation was predominantly oxic marine. The results of this study can be useful for better understanding the Cretaceous hydrocarbon system in the study area.

Keywords

References

Abdollahie Fard, I., Braathen, A., Mokhtari, M., Alavi, S. A., 2006, Interaction of the Zagros Fold–Thrust Belt and the Arabian-type, deep-seated folds in the Abadan Plain and the Dezful Embayment, SW Iran: Petroleum Geoscience 12(4), 347-362.
Akbari et al., 2007. Study of microfacies, sedimentary environment, stratigraphic and biostratigraphic sequence of the Bangestan reservoir in the Binak Oilfield. Report No. P-6187, Deputy Director - Expansion Geology, Basic Geology Department.
Ansari, A. a. S., N. H, 1975. The Binak Field reservoir study Asmari and Bangestan. Report No. P- 2724, Reservoir Geology and reservoir engineering studies department, Oil Service Company of Iran, Ahwaz.
Bahroudi, A., 2003. The effect of mechanical characteristics of basal decollement and basement structures on deformation of the Zagros basin, Uppsala University Library.
Behar, F., Beaumont, V., Penteado, H. D.B., 2001. Rock-Eval 6 technology: performances and developments. Oil & Gas Science and Technology 56(2), 111-134.
Berberian, M., King, G., 1981. Towards a paleogeography and tectonic evolution of Iran: Reply. Canadian Journal of Earth Sciences 18(11), 1764-1766.
Bordenave, M., Huc, A., 1995. The Cretaceous source rocks in the Zagros foothills of Iran: Revue de L'institut Français du Petrole 50(6), 727-752.
Espitalié, J., Madec, M., Tissot, B., Mennig, J., Leplat, P., 1977. Source rock characterization method for petroleum exploration, in Proceedings Offshore Technology Conference OnePetro.
Falcon, N.L., 1974. Southern Iran: Zagros Mountains: Geological Society, London, Special Publications 4(1), 199-211.
Hooper, R., Baron, I., Agah, S., Hatcher, R., Al-Husseini, M., 1994. The Cenomanian to recent development of the Southern Tethyan Margin in Iran. Middle East Petroleum Geosciences GEO 2, 505-516.
Huang, D., Liu, B., Wang, T., Xu, Y., Chen, S., Zhao, M., 1999. Genetic type and maturity of Lower Paleozoic marine hydrocarbon gases in the eastern Tarim Basin. Chemical Geology 162(1), 65-77.
Hunt, J., 1996. Petroleum Geochemistry and Geology, WH Freeman and Co, San Francisco, 743p.
 Kessler, R.C., Sonnega, A., Bromet, E., Hughes, M., Nelson, C.B., 1995. Posttraumatic stress disorder in the National Comorbidity Survey. Archives of General Psychiatry 52(12), 1048-1060.
Lafargue, E., Marquis, F., Pillot, D., 1998. Rock-Eval 6 applications in hydrocarbon exploration, production, and soil contamination studies: Revue de l'institut français du pétrole 53(4), 421-437.
Motiei, H., 1993. Stratigraphy of the Persian Gulf, 590p.
Peters, K.E., Peters, K.E., Walters, C.C., Moldowan, J., 2005. The biomarker guide, Cambridge University press, 1155 p.
Stach, E., Mackowsky, M.-T., Teichmuller, M., Taylor, G., Chandra, D., Teichmuller, R., 1982. Stach's textbook of coal petrology, Gebruder Borntraeger, Berlin 535p.
Stoneley, R., 1976. On the origin of ophiolite complexes in the southern Tethys region: Reply. Tectonophysics 34(3-4), 262-265.
Takin, M., 1972. Iranian geology and continental drift in the Middle East. Nature 235 (5334), 147-150.
Advanced Applied Geology
Volume 12, Issue 3
October 2022
Pages 557-572

Files

Share

How to cite

Statistics