Skip to main content
Log in

Oil and gas potential assessment for coal measure source rocks on absolute concentration of n-alkanes and aromatic hydrocarbons

  • Published:
Science in China Series D: Earth Sciences Aims and scope Submit manuscript

Abstract

Absolute concentration of normal alkanes (n-alkanes) and aromatic hydrocarbons in bitumen extracted from source rocks in the period of thermodegradation from Turpan-Hami Basin suggests that aromatic hydrocarbons are dominant in coal and carbargilite while n-alkanes are dominant in mudstones. Bulkrock analysis and gas chromatograph/mass spectrum (GC-MS) of source rocks shows aromatic hydrocarbons are dominant in total ion chromatograms (TIC) of samples with poor perhydrous macerals while n-alkanes are dominant in TICs of samples with abundant perhydrous macerals. The identification of oil-prone and gas prone property based on GC-MS of bitumen “A” together with bulkrock analysis indicates that source rocks from Shengbei area are more oil-prone while source rocks from Qiudong and Xiaocaohu areas are more gas-prone, coinciding with the distribution of oil and gas reservoirs in Taibei Sag. Ratios used to identify oil-prone and gas-prone property for source rocks from Turpan Basin are proposed: n-alkanes >110 μg·mg−1, aromatics <15 μg·mg−1, and n-alkanes/aromatics >8 for oil-prone source rock bitumen while n-alkanes <82 μg·mg−1, aromatics >40 μg·mg−1, and n-alkanes/aromatics <1.5 for gas-prone source rock bitumen.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. Huang D F. Advances in hydrocarbon generation theory II. Oils from coal and their primary migration model. J Pet Sci Eng, 1999, 22: 131–139

    Article  Google Scholar 

  2. Huang D F, Qin K Z, Wang T G. Oil from Coal: Formation and Mechanism (in Chinese). Beijing: Petroleum Industry Press, 1995. 1–425

    Google Scholar 

  3. Cheng K M, Xiong Y, Sun W G. Composition of coal structure and its effect on hydrocarbon generation (in Chinese). Xinjiang Pet Geol, 2004, 25(4): 351–354

    Google Scholar 

  4. Wilkins R W T, George S C. Coal as a source rock for oil: A review. Int J Coal Geol, 2002, 50: 317–361

    Article  Google Scholar 

  5. Isaksen G H, Curry D J, Yeakel J D, et al. Controls on the oil and gas potential of humic coals. Org Geochem, 1998, 29(1): 23–44

    Article  Google Scholar 

  6. Snowdon L R, Powell G. Immature oil and condensate—Modification of hydrocarbon generation model for terrestrial organic matter. AAPG Bull, 1982, 66(6): 775–788

    Google Scholar 

  7. Cheng K M, Xiong Y. Study on oil-prone and gas-prone property of coal measure source rocks (in Chinese). Acta Sedimentol Sin, 2004, 22(s): 56–70

    Google Scholar 

  8. Zhang B, Bao J P, Jiang F M. The study of the oil-prone & gas-prone for Jurassic coals (in Chinese). Natural Gas Geosci, 2006, 17(2): 183–186

    Google Scholar 

  9. Zhong N N, Chen G Y. The Factors in Controlling Gas Oil Ratio of Coal Measure and the Relationship to Large and Medium Gas Fields (in Chinese). Beijing: Petroleum Industry Press, 2002. 1–159

    Google Scholar 

  10. Hunt J H. Generation of gas and oil from coal and other terrestrial organic matter. Org Geochem, 1991, 17: 673–680

    Article  Google Scholar 

  11. Snowdon L R. Oil from Type III organic matter: Resinite revisited. Org Geochem, 1991, 17: 743–747

    Article  Google Scholar 

  12. Mukhopadhyay P K, Hatcher P G, Calder J H. 1991. Hydrocarbon generation from deltaic and intermontane fluviodeltaic coal and coaly shale from the Tertiary of Texas and Carboniferous of Nova Scotia. Org Geochem, 1991, 17: 765–783

    Article  Google Scholar 

  13. Qin K, Chen D, Li Z. A new method to estimate the oil and gas potentials of coals and kerogens by solid state 13C NMR spectroscopy. Org Geochem, 1991, 17: 865–872

    Article  Google Scholar 

  14. Powell, T G, Boreham, C J. Terrestrially sourced oils: Where do they exist and what are our limits of knowledge?—A geochemical perspective In: Scott A C, Fleet A J, eds. Coal and Coal-bearing Strata as Oil-prone Source Rocks? Geological Society Special Publication, 1994. 77: 11–29

  15. Killops S D, Funnell R H, Suggate R P, et al. Predicting generation and expulsion of paraffinic oil from vitrinite-rich coals. Org Geochem, 1998, 29: 1–21

    Article  Google Scholar 

  16. Suggate R P. Application of rank (Sr), a maturity index based on chemical analyses of coals. Mar Pet Geol, 2002, 19: 929–950

    Article  Google Scholar 

  17. Suggate R P, Boudou J R. Coal Rank and type variation in rock-eval assessment of New Zealand coals. J Pet Geol, 1993, 16(1): 73–88

    Article  Google Scholar 

  18. Sykes R, Snowdon L R. Guidelines for assessing the petroleum potential of coaly source rocks using Rock-Eval pyrolysis. Org Geochem, 2002, 33: 1441–1455

    Article  Google Scholar 

  19. Zhao H, Huang G, Zhu C, et al. The quantitation and origin of C40+ n-alkanes in crude oils and source rocks. Org Geochem, 2003, 34(7): 1037–1046

    Article  Google Scholar 

  20. Tissot B P, Welte D H. Petroleum Formation and Occurrence, 2nd ed. Berlin: Springer, 1984. 1–699

    Google Scholar 

  21. Lu S F, Zhang M. Oil and Gas Geochemistry (in Chinese). Beijing: Petroleum Industry Press, 2008. 1–316

    Google Scholar 

  22. Mukhopadhyay P K, Hatcher P G. Composition of coal. In: Law B E, Rice D D, eds. Hydrocarbons in Coal. AAPG Stud Geol, 1993, 38: 79–118

  23. Mo H, Huang W, Machnikowska H. Generation and expulsion of petroleum from coal macerals visualized in-situ during DAC pyrolysis. Int J Coal Geol, 2008, 73(2): 167–184

    Article  Google Scholar 

  24. Yuan M S, Liang S J, Yan L C. Petroleum Geology and Exploration Practice of Turpan Basin (in Chinese). Beijing: Petroleum Industry Press, 2002. 1–610

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to HongJing Zhao.

Additional information

Supported by National Natural Science Foundation of China (Grant Nos. 40472081 and 40772091) and Yangtze University Foundation (Grant No. 05Z0504)

Rights and permissions

Reprints and permissions

About this article

Cite this article

Zhao, H., Zhang, M. & Wang, Z. Oil and gas potential assessment for coal measure source rocks on absolute concentration of n-alkanes and aromatic hydrocarbons. Sci. China Ser. D-Earth Sci. 52 (Suppl 1), 51–58 (2009). https://doi.org/10.1007/s11430-009-5021-9

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11430-009-5021-9

Keywords

Navigation