| Oil cracking to gases： Kinetic modeling and geological significance |
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| 作者姓名： | TIAN Hui WANG Zhaoming XIAO Zhongyao LI Xianqing XIAO Xianming |
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| 作者单位： | [1]State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China [2]Graduate School of the Chinese Academy of Sciences, Beijing 100049,China [3]Tarim Oil Field Company, Korla 841000, China [4]Key Laboratory of Coal Resources, Ministry of Education, ChinaUniversity of Mining and Technology, Beijing 100083, China |
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| 基金项目： | The authors are indebted to associate Prof. Shen Jiagui, Prof. Liu Jinzhong and associate Prof. Xu An for their help in pyrolysis experiments and Prof. Tang Yongchun for his constructive comments on kinetic modeling. The work was financially supported by the Natural Science Fund for Distinguished Young Scholars （Grant No. 40625011）, the National Key Technologies R ＆ D Program （Grant No. 2004BA616A02-01-01-04） and the National Natural Science Foundation of China （Grant No. 40572085）. |
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| 摘 要： | A Triassic oil sample from LN14 of Tarim Basin was pyrolyzed using the sealed gold tubes at 200-620℃under a constant pressure of 50 MPa. The gaseous and residual soluble hydrocarbons were analyzed. The results show that the cracking of oil to gas can be divided into two distinct stages: the primary generation of total C1-5 gases from liquid oil characterized by the dominance of C2-5 hydrocarbons and the secondary or further cracking of C2-5 gases to methane and carbon-rich matters leading to the progressive dryness of gases. Based on the experimental data, the kinetic parameters were determined for the primary generation and secondary cracking of oil cracking gases and extrapolated to geological conditions to predict the thermal stability and cracking extent of crude oil. Finally, an evolution model for the thermal destruction of crude oil was proposed and its implications to the migration and accumulation of oil cracking gases were discussed.
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| 关 键 词： | 石油裂化 动态建模 石油热稳定性 气体积累 |
| 收稿时间： | 2005-12-29 |
| 修稿时间： | 2005-12-292006-04-04 |
Oil cracking to gases: Kinetic modeling and geological significance |
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| TIAN Hui , WANG Zhaoming XIAO Zhongyao LI Xianqing XIAO Xianming.Oil cracking to gases: Kinetic modeling and geological significance[J].Chinese Science Bulletin,2006,51(22):2763-2770. |
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| Authors: | Hui Tian Zhaoming Wang Zhongyao Xiao Xianqing Li Xianming Xiao |
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| Affiliation: | (1) State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China;(2) Graduate School of the Chinese Academy of Sciences, Beijing, 100049, China;(3) Tarim Oil Field Company, Korla, 841000, China;(4) Key Laboratory of Coal Resources, Ministry of Education, China University of Mining and Technology, Beijing, 100083, China |
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| Abstract: | A Triassic oil sample from LN14 of Tarim Basin was pyrolyzed using the sealed gold tubes at 200–620°C under a constant pressure
of 50 MPa. The gaseous and residual soluble hydrocarbons were analyzed. The results show that the cracking of oil to gas can
be divided into two distinct stages: the primary generation of total C1–5 gases from liquid oil characterized by the dominance of C2–5 hydrocarbons and the secondary or further cracking of C2–5 gases to methane and carbon-rich matters leading to the progressive dryness of gases. Based on the experimental data, the
kinetic parameters were determined for the primary generation and secondary cracking of oil cracking gases and extrapolated
to geological conditions to predict the thermal stability and cracking extent of crude oil. Finally, an evolution model for
the thermal destruction of crude oil was proposed and its implications to the migration and accumulation of oil cracking gases
were discussed. |
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| Keywords: | oil cracking kinetic modeling thermal stability of crude oil gas accumulation |
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