Determination of Sterane and Triterpane in the Tamsagbulag Oilfield

B. Byambagar, E. Enkhtsetseg, D. Monkhoobor, B. Avid, A. Tuvshinjargal

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Mongolian Academy of Sciences,.

DOI: 10.4236/aces.2011.13024                

Abstract

Crude oils representing four different holes from the Tamsagbulag oilfield were analyzed by gas chromatography-mass spectrometry (GC/MS) spectroscopy. Fifty-two biomarker compounds, 34 pentacyclic triterpanes and 18 steranes were identified and semi-quantitatively determined by selective ion monitoring (SIM) chromatography. Depending on the oil source, the variation in the pentacyclic triterpanes distribution is more significant than the variation in the sterane distribution. It is said that pregnane and honopregnane originated during the period of very salty sedimentary accumulation in the condition of diagenesis.

Keywords

Crude Oil, Biomarker, GC-MS, Tamsagbulag Oilfield

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	G. D. Hobson and W. Pohl, “Modern Petroleum Tech-nology,” Applied Science Publishers, London, 1973.
[2]	J. M. Hunt, “Petroleum Geochemistry and Geology,” Freeman Company, New York, 1979.
[3]	J. G. Speight, “The Chemistry and Technology of Petro-leum,” Marcel Dekker, Inc., New York, 1991.
[4]	D. R. Luellen and D. Shea, “Semipermeable Membrane Devices Accumulate Conserved Rations of Sterane and Hopane Petroleum Biomarkers,” Chemosphere, Vol. 53, No. 7, 2003, pp. 705-713. doi:10.1016/S0045-6535(03)00576-9
[5]	A. Hauser, H. Dashti and Z. H. Khan, “Identification of Biomarker Compounds in Selected Kuwait Crude Oils,” Fuel, Vol. 78, No. 12, 1999, pp. 1483-1488. doi:10.1016/S0016-2361(99)00075-7
[6]	J. Connan, J. Bouroullec, D. Dessort and P. Albrecht, “The Microbial Input in Carbonate-Anhydrite Facies of a Sabkha Palaeoenvironment from Guatemala: Molecular Approach,” Organic Geochemistry, Vol.10, No. 1-3, 1986, pp. 29-50. doi:10.1016/0146-6380(86)90007-0
[7]	A. A. Petrov, “Hydrocarbons of the Crude Oil,” Nauka, Moscow, Moscow, 1984.
[8]	M. I. Roushdy, M. M. El Nady, Y. M. Mostafa, et al., “Biomarkers Characteristics of Crude Oils from Some Oilfields in the Gulf of Suez, Egypt,” Journal of Amer-can Science, Vol. 6, No. 11, 2010, pp. 911-925.
[9]	S. Aboglila, K. Grice, K. Trinajstic, et al., “Use of Biomarker Distributions and Compound Specific Isotopes of Carbon and Hydrogen to Delineate Hydrocarbon Characteristics in the East Sirte Basin (Libya),” Organic Geochemistry, Vol. 41, No. 12, 2010, pp. 1249-1258. doi:10.1016/j.orggeochem.2010.05.011
[10]	R. P. Philp, J. G. Li and C. A. Lewis, “An Organic Geo-chemical Investigation of Crude Oils from Shanganning, Jianghan, Chaidamu and Zhungeer Basins, China,” Organic Geochemistry, Vol. 14, No. 4, 1989, pp. 447-460. doi:10.1016/0146-6380(89)90010-7
[11]	R. P. Philp, R. T. Simoneit and T. D. Gilbert, “Advances in Organic Geochemistry,” Wiley, Chichester, 1981, pp. 698-704.
[12]	B. Khongorzul, “Features of the Hydrocarbon Composi-tion and High Molecular Compounds of the High Paraf-finic Oil from Mongolia,” Dissertation, Tomsk, 2008, pp. 67-77.
[13]	V. Alimaa, “Effect of the Depths on Crude Oil Properties,” Dissertation, UB, 2008, p. 118.
[14]	A. Sainbayar, “Study on Hydrocarbon’s Composition of Mongolian Petroleum,” Ph.D. Thesis, Ulaanbaatar, 2006, p. 200.
[15]	G. Demaison, A. J. Holck, R. W. Jones and G. T. Moore, “Predictive Source Bed Stratigraphy: A Guide to Region-al Petroleum Occurrence,” Proceedings of the 11th World Petroleum Congress 2, PDI, Wiley, New York, 1984, pp. 17-29.