Genetic classification of the Persian Gulf Eastern part oil fields by infrared spectroscopy of asphaltene samples
Subject Areas : GeochemistryMorteza Taherinezhad 1 , Morteza Asemani 2 , Ahmad reza Rabbani 3
1 -
2 -
3 -
Keywords: Asphaltene, Fourier transform infrared (FTIR) spectroscopy Oil-oil correlation Persian Gulf Iran,
Abstract :
Asphaltene is always considered as a problem in oil industry. But, asphaltenes are desirable compounds in geochemical studies specially in oil-oil correlation. Oil-oil correlation is one of the most important issues in geochemical studies that enables to classify oils genetically. Asphaltenes due to their structural similarity with kerogen and unaffected and/or little affected from secondary processes are known as valuable compounds in geochemical studies. So, in this paper the structural characteristics of asphaltenes were considered as a correlation parameter. For this study 5 oil samples were collected from the Persian Gulf eastern part oil fields. Structural characteristics of these asphaltenes were investigated by Fourier transform infrared (FTIR) spectroscopy. 2D and 3D graphs based on aliphatic and aromatic compounds (predominant compounds in asphaltenes structure) and sulfoxide and carbonyl functional groups (which are represent of sulfur and oxygen abundance in asphaltenes) were used for comparison of asphaltenes structure in different samples. According to the results of these defined graphs, the studied oil samples comprise two oil families with distinct genetic characteristics. The first oil family consists of the Salman and Reshadat oil samples, and the second oil family consists of the Resalat, Siri E and Siri D oil samples. To validation and complement the obtained results, the other common geochemical techniques such as stable carbon isotope and biomarkers parameters, were employed and these techniques completely confirmed previous results. According to biomarker parameters, the first oil family originated from marl source rock and the second oil family was sourced from carbonate source rock.
ربانی، ا. (1392)، "زمین شناسی و ژئوشیمی نفت خلیج فارس،" انتشارات دانشگاه تفرش.#
Asemani, M., & Rabbani, A. R. (2016). Oil-oil correlation by FTIR spectroscopy of asphaltene samples. Geosciences Journal, 20(2), 273-283.#
ASTM D 2007 – 03; Standard Test Method for Characteristic Groups in Rubber Extender and Processing Oils and Other Petroleum-Derived Oils by the Clay-Gel Absorption Chromatographic Method, An American National Standard, Reapproved 2008.#
Behar, F., & Pelet, R. (1985). Pyrolysis-gas chromatography applied to organic geochemistry: structural similarities between kerogens and asphaltenes from related rock extracts and oils. Journal of Analytical and Applied Pyrolysis, 8, 173-187.#
Behar, F., Pelet, R., Roucache, J., 1984. Geochemistry of asphaltenes. Organic Geochemistry 6, 587–595.#
Di Primio, R., Horsfield, B., Guzman-Vega, M. A., 2000, Determining the temperature of petroleum formation from the kinetic properties of petroleum asphaltenes. Nature, 406, 173-176.#
IP 143/84, Asphaltene precipitation with n-heptane: Standards for Petroleum and its Products, Institute of Petroleum London, UK, 1984.#
Macko, S. A., Engel, M. H., & Parker, P. L. (1993). Early diagenesis of organic matter in sediments. In Organic geochemistry (pp. 211-224). Springer US.#
Moschopedis, S.E., Parkash, S. and Speight, J.; “Thermal decomposition of asphaltenes”, Fuel, 57, p. p. 431-434, 1979.#
Permanyer, A., Douifi, L., Dupuy, N., Lahcini, A., & Kister, J. (2005). FTIR and SUVF spectroscopy as an alternative method in reservoir studies. Application to Western Mediterranean oils. Fuel, 84(2), 159-168.#
Pelet, R., F. Behar, and J. C. Monin. "Resins and asphaltenes in the generation and migration of petroleum." Organic Geochemistry 10.1-3, p. p. 481-498, 1986.#
Peters, K.E., Walters, C. C., and Moldowan, J. M., 2005, The Biomarker Guide: Biomarkers and Isotopes in Petroleum Systems and Earth History. Second volume, 2th edition, Cambridge University Press, New York, 475- 482.#
Rabbani, A. R., Kotarba, M. J., Baniasad, A. R., Hosseiny, E., & Wieclaw, D. (2014). Geochemical characteristics and genetic types of the crude oils from the Iranian sector of the Persian Gulf. Organic Geochemistry, 70, 29-43.#
Rubinstein, I., C. Spyckerelle, and O. Strausz, Pyrolysis of asphaltenes: a source of geochemical information. Geochimica et Cosmochimica Acta, 1979. 43(1): p. 1-6.#
Semple, K. M., Cyr, N., Fedorak, P. M., & Westlake, D. W. (1990). Characterization of asphaltenes from Cold Lake heavy oil: variations in chemical structure and composition with molecular size. Canadian journal of chemistry, 68(7), 1092-1099.#