Abstract
Crude oil hydrocarbon composition characteristics and oil viscosity prediction are important bases in petroleum exploration. A total of 54 oil/heavy-oil samples and 17 oil sands were analyzed and quantified using both comprehensive 2D gas chromatography (GC×GC) and comprehensive 2D gas chromatography/time-of-flight mass spectrometry (GC×GC/TOFMS). The results show that crude oil in the West slope is mainly heavy oil and its hydrocarbon composition is characterized overall by paraffins > mono-aromatics > naphthenes > non-hydrocarbons > di-aromatics > tri-aromatics > tetra-aromatics. Aromatics are most abundant and non-hydrocarbons are least abundant, whilst content differences among paraffins, naphthenes, aromatics, and non-hydrocarbons are less than 15%. There are two types of heavy oil, secondary type and mixing type. Biodegradation is the main formation mechanism of heavy oil. Biodegradation levels cover light biodegradation, moderate biodegradation, and severe biodegradation. With increasing biodegradation, paraffin content decreases while contents of aromatics and non-hydrocarbons increase. In contrast, naphthene content increases first and then decreases with increasing biodegradation. In severe biodegradation stage, naphthenes decrease more quickly than aromatics and non-hydrocarbons. This provides a new method for studying oil/heavy-oil biodegradation mechanism and biodegradation resistance of different hydrocarbons at different biodegradation stages. In the Longhupao-Daan terrace and Qijia-Gulong depression, most crude oil is conventional oil. Its composition is dominated by paraffins with the lowest content of aromatics. In some casual oil wells from the Longhupao-Daan terrace, crude oil from Saertu oil reservoirs is moderately biodegraded whereas crude oil from Putaohua oil reservoir is lightly biodegraded. Chemical parameters using saturate hydrocarbons and aromatics are usually not suitable for determining organic type and thermal maturity of biodegraded oil, especially of moderately or severely biodegraded oil, whilst Ts/(Ts+Tm) ratio can be used to determine thermal maturity of both conventional crude oil and heavy oil.
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References
Adam F, Bertoncini F, Brodusch N, et al. 2007. New benchmark for basic and neutral nitrogen compounds speciation in middle distillates using comprehensive two-dimensional gas chromatography. J Chromat A, 1148: 55–64
Aeckersberg F, Bak F, Widdel F. 1991. Anaerobic oxidation of saturated hydrocarbons to CO2 by a new type of sulfate-reducing bacterium. Archives Microbiol, 156: 5–14
Dallam W M. 2001. Evidence for biodegradation and evaporative fractionation in West Sak, Kuparuk and Prudhoe bay field areas, North Slope, Alaska. Org Geochem, 32: 411–443
Feng Z H, Liao G Z, Fang W, et al. 2003. Formation of heavy oil and correlation of oil-source in the western slope of the northern Songliao Basin. Petrol Expl Dev, 30: 25–27
Freitas L S, Von Mühlen C, Bortoluzzi J H, et al. 2009. Analysis of organic compounds of water-in-crude oil emulsions separated by microwave heating using comprehensive two-dimensional gas chromatography and time-of-flight mass spectrometry. J Chromat A, 1216: 2860–2865
Fritsche W, Hofrichter M. 1992. Aerobic degradation by microorganisms. In: Klein J, ed. Biotechnology, Vol.11b. New York: John Wiley Sons, 146–164
Fryinger G S, Gaines R B. 2001. Separation and identification of petroleum biomarkers by comprehensive two dimensional gas chromatography. J Separ Sci, 24: 87–96
Fu X F, Wang P Y, Lu Y F, et al. 2007. Tectonic features and control of oil-gas accumulation in the West Slope of Songliao Basin. Chin J Geol, 42: 209–222
Gregory T V, Fabien K, Christopher M R, et al. 2008. Analysis of unresolved complex mixtures of hydrocarbons extracted from Late Archean sediments by comprehensive two-dimensional gas chromatography (GC×GC). Org Geochem, 39: 846–867
Hu W R, Zhai G M, Li J M. 2010. Potential and development of unconventional hydrocarbon resources in China. Eng Sci, 12: 25–29
Jobson A, Cook F D, Westlake D W S. 1972. Microbial utilization of crude oil. Appl Microbiol, 23:1082–1089
Lei M S, Cai L X, Wang X D. 1999. Aogula fault and its control on petroleum migration in Songliao Basin. Petrol Expl, 4: 24–26
Lin J Y, Zhang G, Yang Q J, et al. 2003. Analysis on Exploration Potential of Fuyang Reservoir in Daqing Placanticline. Petrol Geol Oilfield Dev Daqing, 22: 16–18
Lu Y F, Cong J S, Zhang S C. 1998. Estimates of oil-gas field scale and distribution in Qijia-Taikang area. Petrol Expl, 3: 31–36
Lu Y F, Wang J, Liu J T. 2008. Calculation of oil and gas reserves and its distribution on the west of centerline of Qijia-Gulong Depression with Grey Theory. J Jilin Univ (Earth Sci Ed), 38: 425–429
Mao D B, Hendrik Van D W, Ludo D, et al. 2008. High-performance liquid chromatography fractionation using a silver-modified column followed by two-dimensional comprehensive gas chromatography for detailed group-type characterization of oils and oil pollutions. J Chromat A, 1179: 33–40
Moldowan J M, Seifert W K. 1979. Head-to-head linked isoprenoid hydrocarbons in petroleum. Science, 204: 169–171
Peter K E, Moldowan J M. 1993. The Biomarker Guide: Interpreting Molecular Fossils in Petroleum and Ancient Sediments. Cambridge: Prentice Hall Inc. 252–256
Schoenmakers P J, Oomen J L M M, Blomberg J, et al. 2000. Comparison of comprehensive two-dimensional gas chromatography and gas chromatography-mass spectrometry for the characterization of complex hydrocarbon mixtures. J Chromat A, 892: 29–46
Sun J G, Fu G, Liu J T. 2006. Hydrocarbon migration route and main controlling factors of Sa 2 and 3 reservoirs in Western Slope. Petrol Geol Oilfield Dev Daqing, 26: 27–30
V G van Mispelaar A K, Smilde O E, de Noord, et al. 2005. Classification of highly similar crude oils using data sets from comprehensive two-dimensional gas chromatography and multivariate techniques. J Chromat A, 1096: 156–164
Wang G Z, Chen H, Zhong J H. 2010. Diagenesis study for Gaotaizi reservoir in Longhupao area of Songliao Basin. Spec Oil Gas Reserv, 17: 57–60
Wang H T, Weng N, Zhang S C, et al. 2010. Characteristics and identification of saturated hydrocarbons by comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry. J Chin Mass Spect Soc, 31: 18–27
Xiang C F, Feng Z Q, Wu H Y, et al. 2005a. Discussion on the dynamic factors controlling hydrocarbon migration from depression to West Slope Zone of the Songliao Basin, Northeast China. Acta Sediment Sin, 23: 719–725
Xiang C F, Xia B, Xie X N, et al. 2005b. Major hydrocarbon migration pathway system in western slope zone of Songliao Basin. Oil Gas Geol, 25: 204–215
Xiang C F, Lu Y M, Li J H. 2007. Physical properties and genesis of heavy oil in the northern Northwest Slope Zone of the Songliao Basin, Northeastern China. Acta Geol Sin, 81: 255–260
Xie M J, Ji Q S, Jing D S. 2011. Main controlling factors of hydrocarbon accumulation of Fuyu oil layer in Qijia-Gulong area. Complex Hydrocarbon Reser, 4: 5–8
Zhang W Q, Yan Y F. 2005. Oil and gas source and migration on West Slope of Songliao Basin. Petrol Geol Oilfield Dev Daqing, 24: 17–22
Zhao R, Mei L, Chen F, et al. 2006. Accumulation conditions of oil-type gas and forecast of favorable exploration areas in West slope region. J Daqing Petrol Ins, 30: 5–8
Zhou Q H, Lu Y F, Fu G, et al. 2006. The pool-forming pattern and main control factors in West Slope of the North of Songliao Basin. Nat Gas Geosci, 17: 765–769
Zhou Q H, Lu Y F, Wang S. 2008. Sealing of Aogula faulted zone and its control on oil and gas migration and accumulation of the West Slope of Songliao Basin. Nat Gas Geosci, 19: 210–215
Zhu G Y, Zhao W Z, Zhang S C, et al. 2006. Characteristics and recognition of biodegradation gas of heavy oil and its exploration potential. Petrol Expl, 17: 52–57
Zou C N, Wang Z Y, Xu G J, et al. 2004. Characteristics and genesis of the Western Slope thick oils in Songliao Basin. Acta Sediment Sin, 22: 700–705
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Zhang, J., Feng, Z., Fang, W. et al. Crude-oil hydrocarbon composition characteristics and oil viscosity prediction in the northern Songliao Basin. Sci. China Earth Sci. 57, 297–312 (2014). https://doi.org/10.1007/s11430-013-4656-8
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DOI: https://doi.org/10.1007/s11430-013-4656-8