Isotopic Study of Bangestan Reservoir Crude Oil in Some of Abadan Oil Fields, SW Iran

Authors

1 Department of Geology, Faculty of Earth Sciences, Shahid Chamran University of Ahvaz, Iran Petroleum Geology and Geochemistry Reserch Center (PGGRC ), SCU, Ahvaz, Iran

2 Department of Geology, Faculty of Earth Sciences, Shahid Chamran University of Ahvaz, Iran

3 National Iranian Oil Company, Exploration Directorate, Tehran, Iran

Abstract

    Abadan plain is a structural zone located in the south-western end of the Zagros. To study the characteristics of the region's crude oils, reservoir oils of Bangestan group was examined by gas chromatography isotope ratio mass spectrometry (GC-IRMS) in some fields in this structural zone. The GC-IRMS results showed that all the studied crude oils have a marine origin with a small amount of terrigenous organic matter impute. Using compound specific isotope analysis (CSIA), it was found that all crude oils are belong to same family with same flat or less negative profile trend represent marine to transitional environment. According to Pristane and Phytane isotopic value, crude oil producing organic matter is almost same with a small amount of heterogeneous material. The reason of take some distance of Aa-Bu and Ba-sv from others samples is the different degree of maturity and or organic matter type. Therefore, use of isotopic methods especially CSIA in crude oil studies such as correlation and organic matter determination, is very efficient and accurate.
 

Keywords

References

مطیعی، ه.(1382) زمین­شناسی ایران (چینه­شناسی زاگرس). سازمان زمین­شناسی و اکتشافات معدنی کشور،583ص.
Alizadeh, B., Saadati, H., Rashidi, M., Taati, F., 2015. Geochemical investigation of oils from Cretaceous to Eocene Sedimentary sequences of the Abadan Plain, Southwest Iran. Marine and Petroleum Geology.
Bjorǿy, M., Hall, P.B., Moe, R.P., 1994. Stable carbon isotope variation of n-alkanes in Central Graben oils. In: Telnñs, N., van Graas, G., éygard, K. (Eds.),
Clayton, C.J., Bjorøy, M., 1994. Effect of maturity on 13C/12C ratios of individual compounds in North Sea oils, Org. Geochem. 21, pp. 737–750.
Craig, H., 1953. The geochemistry of the stable carbon isotopes. Geochimica et Cosmochimica Acta, v. 3, pp. 53-92.
Drenzek, N. J., 2007. The temporal dynamics of terrestrial organic matter transfer to the oceans: Initial assessment and application (Doctoral dissertation, Massachusetts Institute of Technology and Woods Hole Oceanographic Institution).
Ghazban, F., & Motiei, H., 2007. Petroleum geology of the Persian Gulf. Tehran University.
Hughes, W.B., Holba, A.G., and Dzou, L.I.P., 1995. The ratios of dibenzothiophene to phenanthrene and pristane to phytane as indicators of depositional environment and lithology of petroleum source rocks, Geochim. Cosmochim. Acta 59, pp. 3581–3598.
Mook G.W., 1984. Principles of Isotopic hydrology. Course note, unpublished, department of hydrology and geographical hydrology, university of Groningen. Netherland.
Murray, A. P., Summons, R. E., Boreham, C. J., & Dowling, L. M., 1994. Biomarker and n-alkane isotope profiles for Tertiary oils: relationship to source rock depositional setting. Organic Geochemistry, 22(3), 521-IN6.
Peters, K.E., Walters, C.C., Moldowan, J.M., 2005. The Biomarker Guide: Biomarkers in the Environment and Human History. Vol.1. Second Edition. Cambridge University Press. United Kingdom.
Quandt, L., Gottschalk, G., Ziegler, H., Stichler, W., 1977. Isotope discrimination by photosynthetic bacteria. FEMS Microbiology Letters 1, 125-128.
Sackett, W.M., 1989. Stable carbon isotope studies on organic matter in the marine environment. Handbook of environmental isotope geochemistry, Ed. By Firtz, P. and Fontes, J.C., v. 3, Elsevier, pp. 139-170.
Satarzadeh, Y., Cosgrove, J.W., Vita Finzi, C., 2000. The interplay of faulting and folding during the volution of the Zagros deformation belt. In: Cosgrove, J.W. & Ameen, M.S. (eds) Forced folds and fractures. Geological Society, London, Special Publications, 169, 187–196.
Schidlowski, M., Hayes, J.M., Kaplan, I.R., 1983. Isotopic interfaces of ancient biochemistries: carbon, sulfur, hydrogen and nitrogen. Earth’s earliest biosphere: its origin and evolution, Ed. By Shopf, J.W. Princeton University Press, pp. 149-186.
Simoneit, B.R.T., And Schoell, M., 1995. Carbon isotope systematics of individual hydrocarbons in hydrothermal petroleums from the Guaymas Basin, Gulf of California, Organ. Geochem. 23, pp. 857–863.
Sirevåg, R., Buchanan, B.B., Berry, J.A., Troughton, J.H., 1977. Mechanisms of CO2 fixation in bacterial photosynthesis studied by the carbon isotope fractionation technique. Archives of Microbioly 112, 35-38.
Sofer, Z., 1984. Stable carbon isotope compositions of crude oils: application to source depositional environments and petroleum alteration. American Association of Petroleum Geologists Bulletin, v. 68, pp. 31-49.
Summons, R. E., Hope, J. M., Swart, R., Walter, M. R., 2008. Origin of Nama Basin bitumen seeps: Petroleum derived from a Permian lacustrine source rock traversing southwestern Gondwana. Organic Geochemistry, 39(5), 589-607.
Masoudi, P., Tokhmechi, B., Bashari, A., & Jafari, M. A., 2012. Identifying productive zones of the Sarvak formation by integrating outputs of different classification methods. Journal of Geophysics and Engineering, 9(3), 282.
Advanced Applied Geology
Volume 6, Issue 2
July 2016
Pages 77-85

Files

Share

How to cite

Statistics