Evaluation of hydrocarbon potential of Pabdeh Formation in NW of Kermanshah using pyrolysis Rock–Eval 6

Authors

1 Department of Geology, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran

2 PhD. Student, Sedimentology and Sedimentary Rock, Bu Ali Sina University, Hamadan, Iran

3 PhD. Student, Stratigraphy, Lorestan University, Khorramabad, Iran

4 Independent Researcher

Abstract

The Pabdeh Formation (Paleocene – Oligocene) is one of the hydrocarbon-generating formations in the Zagros basin that investigating hydrocarbon potential of the Pabdeh Formation, 30 samples were taken through the Ezgeleh section, NW Kermanshah. The samples were analyzed by Rock-Eval 6 pyrolysis method. The results show that kerogen type mixed of II and III is the most abundant type II in the Pabdeh Formation. That reason for this could the dominance of marine facies that make up this formation. In terms of genetic potential and hydrocarbon potential, this instrument is a medium relatively good rock. The reflection of vitrinite in most of the Pabdeh Formation specimens is lower than 1.3 indicating a submature source rock but 20 percent of the samples have entered the oil window and liquid hydrocarbons stage, which is also confirmed by Tmax more than 450 C°. HI vs TOC values indicate for this Pabdeh Formation a C and BC organic facies and to a lesser extend B and AB, wich this facies diversity can be due to the diversity of organic materials of continental and marine origin, and its deposition mainly in relatively regenerative environments such as pro – delta, to outer shelf, and upper part of the continental slope are done, and if it goes through the stages of thermal maturation, it will be able to produce condensate and gas.

Keywords


Ala, M.A.,  Kinghorn R.R.F., Rahman, M., 1980. Organic geochemistry and source rock characteristics of the Zagros petroleum province, Southwest of Iran. Petroleum Geology 3, 61-86.
Alizadeh, B., Janatmakan, N., GHalavand, H., GHobeyshavi, A., 2012a. Geochemistry and sequence stratigraphy of the Pabdeh Formation in Mansouri oil field, Southwest of Iran. Advanced Applied Geology 1, 27-40.
Alizadeh, B., Sarafdokht, H., Rajabi, M., Opera, A., Janbaz, M., 2012b. Organic geochemistry and petrography of Kazhdumi (Albian-Cenomanian) and Pabdeh (Paleogene) potential source rocks in southern part of Dezful Embayment, Iran. Organic Geochemistry 49, 36-46.
Alizadeh, B., Maroufi, KH., Heydarifard, M,H., 2013. Evaluation of the amount of organic matter obtained from the artificial neural network in the framework of sequence stratigraphy: Case study of Pabdeh Formation in Maroon oil field. Advanced Applied Geology 3, 21-30.
Behbahani, R., Khodabakhsh, S., Mohseni, H., Atashmaed, Z., Moghadasi, A., 2008. The effective role of the petrographic evidence, organic geochemistry and trace fossils in determining the sedimentary environment (A example of the Pabdeh Formation, Zagros basin, South west of Iran).  Joural of Science, University of Tehran 34, 121-138.
Bordenave, M.L., Burwood., R., 1990. Source rock distribution and maturation in the Zagros Orogenic Belt: Provenance of Asmari and Bangestan reservoir oil accumulations. Organic Geochemistry 16, 366-387.
Bordenave, M.L., Huc, A.Y., 1995. The Cretaceous source rock in the Zagros Foothills of Iran. Reve De Institut Francais Du Petrol 50, 727-754.
Dahl, B., Bojesten-Keoford, J., Holm, A., Justwan, H., Rasmussen, E., Thomsen, E., 2004. A new approach to interpreting Rock-Eval S2 and TOC data for kerogen quality assessment. Organic Geochemistry 35(11-12), 1461-1477.
Demasion, G.J., Huizinga, B.J., 1991. Genetic classification of the petroleum system. AAPG. Bulletin 75, 1624-1643.
Espitalie, J., Deroo, G., Marquis, F., 1985. La pyrolysis Rock-Eval at ses applications Revue Institue France-aisdu Petrol, Part I 40, 563-587 (in French).
Ezampanah, A., Sadeghi, A., Adabi, M.H., Jamali, A.M., 2012. Biostratigraphy of the Garau Formation in Naft well subsurface stratigraphic section, South Kermanshah. Journal of Stratigraphy and Sedimentology Researchers 47, 69-82.
Ghasemi-Nejad, E., Head, A.M., Naderi, M., 2009. Palynology and petroleum potential of the Kazhdumi Formation (Cretaceous: Albian–Cenomanian) in the South Pars field, northern Persian Gulf, Marine and Petroleum Geology. Marine and Petroleum Geology 26, 805–816.
Hart, M.B., 1990. Cretaceous sea level changes and global eustatic curves; evidence from SW England. Proceedings of the Ussher Society 7, 268-272.
Hunt, J.M., 1996. Petrpleum geochemistry and geology. W.H. Freeman and Company, New York, 743 p.
Jones, R.W., 1987. Organic facies. In: Brooks, J., Welte, D., (Eds). Advances in petroleum geochemistry 2. Academian Press, London, p. 1-9.
Kamali, M,R., Fathi Mobarakabad, A., Mohsenian, E., 2006. Petroleum geochemistry and thermal modeling of Pabdeh Formation in Dezful embyment. Joural of Science, University of Tehran 32(2), 134-143.
Karimi, A,R. Rabbani, A,R., Kamali, M.R., Heidarifard, M.H., 2016. Geochemical evaluation and thermal modeling of the Eocene–Oligocene Pabdeh and Middle Cretaceous Gurpi Formations in the northern part of the Dezful Embayment. Arabian Journal of Geoscience 9, 423.
Katz, B.J., 1983. Limitation of Rock-Eval pyrolysis from typing organic matter. Organic Geochemistry 4, 195-199.
Kobrae, M., Rabanni, A., Taati, F., 2017. Source rock characteristics of the Early Cretaceous Garau and Gadvan formations in the western Zagros Basin–southwest Iran. Journal of Petroleum Exploration Production Technology 7, 1051–1070.
Kotarba, M.J., Wieclaw, D., Kosakowski, P., Zacharski, J., Kowalski, A., 2003. Evaluation of source rock and petroleum potential of middle Jurassic strata in the south-eastern part of Poland, Prezeglad. Geologi Czny, 51, 1031-1040.
Langford, F.F., Blanc Valleron, M.M., 1990. Interpreting Rock- Eval pyrolysis data using of pyrolylizable hydrocarbons vs. total organic carbon: AAPG Bulletin 74(6), 804-779.
Mac Leod, J.H., 1970. Kermanshah geological compilation map: Iranian Oil Operating Companies, scale 1:100,000, sheet number 20812 W.
Mashhadi, Z.S., Kamali, M.R., Rabbani, A.R., 2014.  Source rock evaluation and geochemical characterization of Albian Kazhdumi Formation offshore SW Iran. In: Third EAGE exploration workshop 6–9 April 2014, Abu Dhabi, UAE.
Mashhadi, Z.S., Rabbani, A.R., 2015. Organic geochemistry of crude oils and Cretaceous source rock in the Iranian sector of the Persian Gulf; an oil–oil and oil–source rock correlation study. International Journal of Coal Geology 146, 118–144.
Maurer, F., van Buchem, F.S.P., Eberli, G.P., Pierson, B., 2013. Late Aptian long-lived glacio-eustatic lowstand recorded on the Arabian Plate. Terra Nova 25, 87–94.
Motiei H., 1993. Stratigraphy of Zagros. In A. Hushmandzadeh (Ed.), Treatise on the Geology of Iran. Geological Survey of Iran, 536 p.
Murris, R.J., 1980. Middle East: stratigraphic evolution and oil habitat. AAPG Bulletin 4, 597-618.
Navidtalab, A., Rahimpor Bonab, H., Nazari Badii, A., Safari, M., 2014. Challenges in deep basin sequence stratigraphy: a case study from the Early–Middle Cretaceous of SW Zagros. Springer-Verlag Berlin Heidelberg, DOI 10.1007/s10347-013-0377-x.
Orak, Z., Kordi, M., Karimi, A.R., 2018. Geochemical assessment and expansion of organic facies of Pabdeh Formation on the northwestern shores of the Persian Gulf and south of Dezful embyment using the Rock Eval pyrolysis. Journal of Stratigraphic and Sedimentological Research 34(3), 95-108.
Pasley, M., Gregory, W., Hart, G.F., 1991. Organic matter variations in transsgressive and regressive shale. Organic Geochemistry 17(4), 483-509.
Peters, K.E., Cassa, M.R., 1994. Applied source rock geochemistry. In: Magoon, L.B., Dow, W.G. (Eds.), The petroleum system- From source to trap. American Association of Petroleum Geologists Memoir 60, 93-120.
Peters, K.E., 1986. Guidelines for evaluating petroleum source rocks using programmed pyrolysis. American Association Petroleum Geology Bulletin 70, 318-329.
Rabbani, A.R., Bagheri Tirtashi, R., 2010. Hydrocarbon source rock evaluation of the super-giant Ahwaz oilfield, SW Iran. Australian Journal of Basic Applied Science 4, 673–686.
Sepehr, M., Cosgrove, J.W., 2004. Structural framework of the Zagros Fold–Thrust Belt, Iran. Marine Petroleum Geology 21, 829–843.
Tabatabaei, H., Motabed, A., Soleymani, B., Kamali, M.R., 2012. Geochemistry of Gurpi-Pabdeh-Asmari formations and its implication on chemical variation during deposition of Pabdeh Formation, Zagros Basin. Himalayan Geology 33(2), 126-138.
Tissot, B.P., Durand, B., Espitalie, J., Combaz, A., 1974. Influence of nature and diagenesis of organic matter information of petroleum. AAPG Bulletien 58, 499-506.
Zohrabzadeh, M., Rahimpour–Bonab, H., Aleali, M., 2020. The Middle Cretaceous – Lower Miocene 3D petroleum system Modeling of Kupal Oil Field, South West of Iran, Dezful Embayment. Geopersia 10(1), 165-194.