Chinese Journal of Geochemistry

, Volume 24, Issue 3, pp 289–296 | Cite as

Thermogravimetry-differential thermal analysis coupled with chromatography as a thermal simulation experimental method and its application to gaseous hydrocarbons from different source rocks

  • Shi Ji’an 
  • Zhao Xin 
  • Wang Qi 
  • Liu Quanyou 


In this paper a thermogravimetry-differential thermal analysis method coupled with chromatography (TG-DTA-GC) has been adopted to simulate the generation of gaseous hydrocarbons from different hydrocarbon source rocks such as coals, mudstones, and carbonate rocks with different maturities. The temperature programming for thermal simulation experiment is 20°C/min from ambient temperature to 700°C. As viewed from the quantities and composition of generated gaseous hydrocarbons at different temperatures, it is shown that low-mature coal has experienced the strongest exothermic reaction and the highest loss of weight in which the first exothermic peak is relatively low. Low-mature coal samples have stronger capability of generating gaseous hydrocarbons than high-mature samples. The amounts and composition of gaseous hydrocarbons generated are closely related not only to the abundance of organic carbon in source rocks, but also to the type of kerogen in the source rocks, and their thermal maturity. In the present highly mature and over-mature rock samples organic carbon, probably, has already been exhausted, so the production of gaseous hydrocarbons in large amounts is impossible. The contents of heavy components in gaseous hydrocarbons from the source rocks containing type- I and -II kerogens are generally high; those of light components such as methane and ethane in gaseous hydrocarbons from the source rocks with III-type kerogens are high as well. In the course of thermal simulation of carbonate rock samples, large amounts of gaseous hydrocarbons were produced in a high temperature range.

Key words

hydrocarbon source rock thermal simulation experiment using TG-DTA-GC gaseous hydrocarbon 


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  1. Andresen B., Throndsen T., Raheim A., and Bolstad Johanne (1995) A comparison of pyrolysis products with models for natural gas generation [J].Chemical Geology.126, 261–280.CrossRefGoogle Scholar
  2. Cheng Kemig and Wang Zhaoyun (1996) An evaluation method of hydrocarbon generating potential of highly mature and over-mature marine carbonate [J].Science in China (Series D).26, 537–543 (in Chinese).Google Scholar
  3. Cheng Rongshu (1988)Meology of Natural Gas [M]. pp. 117–160. Chinese University of Geology Press, Wuhan (in Chinese).Google Scholar
  4. He Weigang, Jin Kuili, and Hao Duohu (2004) Thermal simulation experiment research of single maceral in coals with a watered pressure vessel—An example of brown coal in the Yimin Formation of the Hailer Basin [J].Petroleum Geology and Experiment.26, 89–93 (in Chinese with English abstract).Google Scholar
  5. Huang Zhilong, Zhang Sihai, and Zhong Ningning (2003) Simulation experiment of gas generation in carbonate rocks [J].Chinese Journal of Geology.38, 455–459 (in Chinese with English abstract).Google Scholar
  6. Krooss B. M., Littke R., Muller B., Frielingsdorf J., Schwochau K., and Idiz E. F. (1995) Generation of nitrogen and methane from sedimentary organic matter: Implications on the dynamics of natural gas accumulations [J].Chemical Geology.126, 291–318.CrossRefGoogle Scholar
  7. Li Xianqing, Xiong Bo, Zhong Ningning, Ma Anlai, Wang Tieguan, and Zhang Aiyun (2004) Organic petrological studies on immature source rocks [J].Chinese Journal of Geochemistry.23, 15–25.CrossRefGoogle Scholar
  8. Liu Quanyou, Liu Wenhui, Qin Shengfei, Meng Qianxiang, and Wang Wanchun (2001) Geochemical study of thermal simulation on coal and coal with different mediums — Yielding rate of gaseous and organic liquid products and their evolution [J].Acta Sedimentologica Sinica.19, 465–468 (in Chinese with English abstract).Google Scholar
  9. Liu Wenhui, Song Yan, Liu Quanyou, Qin Shengfei, and Wang Xiaofeng (2003) Evolution of carbon isotopic composition in pyrolytic gases generated from coal and its main macerals [J].Acta Sedimentologica Sinica.21, 183–190 (in Chinese with English abstract).Google Scholar
  10. Monthious M., Landais P., and Monin J. C. (1985) Comparison between natural and artificial maturation series of humic coals from the Mahakam Delta [J].Indomesian Journal of Organic Geochemistry.8, 275–292.CrossRefGoogle Scholar
  11. Sackett W. M. (1978) Carbon and hydrogen isotope effects during the thermo-catalytic production of hydrocarbons in laboratory simulation experiments [J].Geochimica et Cosmochimica Acta.42, 571–580.CrossRefGoogle Scholar
  12. Sackett W. M. (1993) Carbon isotope exchange between methane and amorphous carbon at 700°C [J].Organic Geochemistry.20, 43–45.CrossRefGoogle Scholar
  13. Tannenbaum E. and Kaplan I. R. (1985) Role of minerals in the thermal alterations of organic matter, I. Generation of gases and condensates under dry condition [J].Geochimica et Cosmochimica Acta.49, 2589–2604.CrossRefGoogle Scholar
  14. Wang Hanyun and Yang Tianyu (1982) Simulation experiment of pyrolysis petroleum to natural gas [J].Natural Gas Industry.2, 28–33 (in Chinese with English abstract).Google Scholar
  15. Wang Xinzhou (1983) The heat-pressure simulative experiment on immature source [J].Acta Sedimentologica Sinica.1, 118–127 (in Chinese with English abstract).Google Scholar
  16. Xie Zengye, Jiang Zhusheng, Zhang Ying, Li Jian, Hu Guoyi, Wang Chunyi, Li Zhisheng, and Luo Xia (2002) Novel method of whole rock pyrolysis and application to the evaluation of source rock [J].Acta Sedimentologica Sinica.20, 510–514 (in Chinese with English abstract).Google Scholar
  17. Xing Qiyi, Xu Ruiqiu, Zhou Zheng, and Pei Weiwei (2001)Basic Organic Chemistry (2nd edition) [M]. pp. 542–543. Higher Education Press, Beijing (in Chinese).Google Scholar
  18. Xu Yongchang (1994)Generation Theory and Application of Natural Gas [M]. pp. 90. Science Press, Beijing (in Chinese).Google Scholar
  19. Yang Tianyu and Wang Hanyun (1983) Simulation experiment of thermocoalificative natural gas genesis and its significance [J].Petroleum of Exploration and Development.10, 29–36 (in Chinese with English abstract).Google Scholar
  20. Zhao Shiqing (1991)Applied Coal Petrology [M]. pp. 147–170. Geology Press, Beijing (in Chinese).Google Scholar
  21. Zheng Jianjing, Wen Deshun, Men Qianxiang, Ji Liming, and Sun Guoqiang (2003) Characteristics of geochemical parameters of coal measures source rock in the thermal simulation experiment [J].Natural Gas Geoscience.14, 134–139 (in Chinese with English abstract).Google Scholar

Copyright information

© Institute of Geochemistry, Chinese Academy of Sciences 2005

Authors and Affiliations

  • Shi Ji’an 
    • 1
  • Zhao Xin 
    • 1
  • Wang Qi 
    • 1
  • Liu Quanyou 
    • 1
  1. 1.Key Laboratory of Gas Geochemistry, Lanzhou Institute of GeologyChinese Academy of SciencesLanzhouChina

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