| Experimental study to confirm the existence of hydrocarbon under high pressure and temperature of deep lithosphere |
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| 作者姓名： | WANG Chuanyuan DU Jianguo WANG Wanchun XIE Hongsen CHEN Guojun DUAN Yi ZHOU Xiaocheng |
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| 作者单位： | [1]Center for Analysis and Prediction, China Earthquake Administration, Beijing 100036, China [2]Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou 730000, China [3]Graduate School, Chinese Academy of Sciences, Beijing 100049, China [4]Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China |
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| 基金项目： | Acknowledgements The authors are grateful to Senior Engineers Meng Qianxiang and Ding Wanren for their help in GC-MS analysis and mass spectra explanation. This study was supported by the National Natural Science Foundation of China （Grant No. 10299040）, the Innovation Fund of Lanzhou Institute of Geology, Chinese Academy of Sciences （2003-19-DJG） and Important Project of Bureau of International Co-operation, Chinese Academy of Sciences （GJHZ05）. |
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| 摘 要： | Previous studies indicated that the existence of over- pressure in sedimentary basins not only affects the as- sessment of oil and gas resources, but also closely re- lates to the accumulation and preservation of petroleumin deep reservoirs1,2]. It is well known that there are more than 180 overpressure basins in the world. Be- cause fluid pressure is transient in sedimentary basin over geologic time, the effect of increasing pressure on organic matter metamorphism is difficult to determine, …
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| 关 键 词： | 高温高压 褐煤 烷烃 熟化 异构化 |
| 收稿时间： | 2005-06-22 |
| 修稿时间： | 2005-06-222005-08-19 |
Experimental study to confirm the existence of hydrocarbon under high pressure and temperature of deep lithosphere |
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| WANG Chuanyuan DU Jianguo WANG Wanchun XIE Hongsen CHEN Guojun DUAN Yi ZHOU Xiaocheng.Experimental study to confirm the existence of hydrocarbon under high pressure and temperature of deep lithosphere[J].Chinese Science Bulletin,2006,51(13):1633-1638. |
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| Authors: | Chuanyuan Wang Jianguo Du Wanchun Wang Hongsen Xie Guojun Chen Yi Duan Xiaocheng Zhou |
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| Institution: | (1) Center for Analysis and Prediction, China Earthquake Administration, Beijing, 100036, China;(2) Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou, 730000, China;(3) Graduate School, Chinese Academy of Sciences, Beijing, 100049, China;(4) Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, China |
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| Abstract: | Pyrolysis of lignite was conducted at high temperatures from 400 to 700 °C and high pressures of 1 and 3 GPa in a closed system
in order to investigate pressure and temperature effects on organic matter maturation. The data indicated that the total yield
of liquid hydrocarbons decreased with increasing pressure and the maximum of production was obtained at a higher temperature.
The alkanes show more mature characteristics with increasing temperature at a given pressure, conversely, high pressure significantly
hinders the thermal evolution of geological organic matter. The experimental results also demonstrated that the relative abundance
of high molecular weight hydrocarbons may exist under the conditions of the lower lithosphere, which not only breaks through
the traditional concept that alkanes mainly present at stage of “oil window”, but also enhances the possibility to find the
oil in the high temperature and pressure areas. |
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| Keywords: | high temperature and high pressure lignite alkane maturation isomerization |
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