Source Rock Studies and Investigation of Garu Formation in Kuhe Sefid Sections (Kermanshah-Ilam border)

Abstract

Although some researchers have claimed Garu Formation in West of Iran as a potential source rock, no documented analytical result has been reported yet in this regard. Since identification of source rock(s) in any exploratory area is essential, a geological section containing the Garu Formation from Kuhe-Sefid (80km S-E of Kermanshah, Iran) was sampled. Seventy nine samples were analyzed by Rock-Eval Pyrolysis based on TOC measurements. As the samples of the mentioned locality contained the minimum required TOC values required for a potential source rock, 12 samples were selected for organic-petrographical investigations. After extracting the Kerogen of the selected samples, their Vitrinite Reflectance (Ro%) was measured. Elemental analysis of Kerogen was also carried out on 6 samples. The mean vitrinite reflectance values ranged between 0.80 to 1.10% which indicates existence of organic maturation level at the end of oil window. The results of elemental analyses and Rock-Eval data indicate the presence of Kerogen (mainly type III and partially type II). Although the TOC content is low (due to considerable thickness of the source rock), this formation is potentially capable of producing large quantities of gaseous and liquid hydrocarbons.
 

Keywords

References

1] Rahman M. & Kinghorn R.R.F., “A practical classification of kerogen related to hydrocarbon generation”, Journal of Petroleum Geology, Vol. 18, Issue. 1, 2007.
[2] Wang Y., “Kinetics of hydrocarbon gas generation from marine kerogen and oil”, Journal of Petroleum Geology Vol. 30, Issue. 4, pp. 339-356, 2008.
[3] Bordenave M.L. & Burswood R., Petroleum Source Rocks, Kats et.al., pp. 183-208, 1994.
[4] مطیعی ه.، زمین‌شناسی ایران، چینه‌شناسی ایران، انتشارات سازمان زمین‌شناسی کشور، 540 صفحه، 1372.
[5] Setudehnia A., Journal of Petroleum Geology, Vol. 1, pp. 3-42, 1978.
[6] Junnifer Miles A., Illustrated glossary of petroleum geochemistry, Oxford University Press Clarendon Press Oxford, 1989.
[7] Alsharhan A.S. & Nairn A.E.M., Sedimentary basins and petroleum geology of the Middle East, The Netherlands, Elsevier Science B.V., 942 p., 1997. 
[8] Bordenave M.L. & Burwood R., “Source rock distribution and maturation in the Zagross orogenic belt: Province of the Asmari and Bangestan reservoir oil accumulation”, Advances in Organic Geochemistry, Vol. 16, Nos. 1-3, pp. 369-387, 1989.
[9] Magoon L.B. & Dow W.G., The petroleum system from source to trap, AAPG Memoir 60, AAPG, Tulsa, Oklahoma, 2nd Ed., pp. 655, 1997.
[10] Hulstrand R.F.H., IRANSE AARDOLIE EXPLORATIE EN PRODUCTIE, Report No.1121 Stratigraphy Col. 20502-1, Revised by  A. Setudehnia, 1970.
[11] Hunt M.H., Petroleum geochemistry and geology, W.H. Freeman and Company, New York,  pp. 743, 1995.
[12] Welte D. & Tissot B., Petroleum formation and occurance a new approach to oil and gas exploration, Springer-Verlag Berlin Heidelberg, New York, 1984.
[13] Mukhopadhyay P.K. & Dow G.W., Vitrinite reflectance as maturity parameter of petrographic and molecular characterization and its application to basin modeling, American Chemical Society Washington DC, 1994.
[14] Rick C. Tobin & Brenda L. Claxton, “Multidisciplinary thermal maturity studies using vitrinite reflectance micro thermometry A new calibration of old techniques”, AAPG Bulletin, Vol. 84, No. 10, pp. 1647-1665, 2000.
[15] Durand B., Kerogen insoluble organic matter from sedimentary rocks, IFP, Editions Technip, 1980.
 
Journal of Petroleum Research
Volume 17, Issue 56.2 - Serial Number 56
November and December 2007
Pages 121-129

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