| 焉耆盆地与柴达木盆地侏罗系成烃及成藏时期的比较 |
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| 引用本文： | 高先志,柳广弟,刘震.焉耆盆地与柴达木盆地侏罗系成烃及成藏时期的比较[J].地质科学,2003,38(3):361-366. |
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| 作者姓名： | 高先志 柳广弟 刘震 |
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| 作者单位： | 石油大学教育部油气成藏机理重点实验室, 北京, 102249 |
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| 摘 要： | 焉耆盆地和柴达木盆地都发育侏罗系烃源岩,形成侏罗系油气系统。由于中 新生代两者构造运动强度的不同,导致两者油气形成时期、油气运移成藏时期以及油气分布层系不同。根据烃源岩热模拟结果和储层包裹体特征的研究,证明焉耆盆地侏罗系油气系统生烃时期主要发生在中 晚侏罗世,油气成藏时期主要发生在中 晚燕山期,为早期一期成藏;柴达木北缘则分别在早侏罗世晚期 晚侏罗世早期和早第三纪末 晚第三纪早期发生了 2次生油过程,因此存在 2期油气成藏,但以晚期为主。两盆地分别是中国西北侏罗系油气系统早期成藏和晚期成藏的典型代表。
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| 关 键 词： | 侏罗系油气系统 油气成藏时期 油气成藏模式 包裹体 焉耆盆地 柴达木盆地 |
DIFFERENCE IN AGES OF PETROLEUM GENERATION AND ACCUMULATION IN THE JURASSIC BETWEEN THE YANQI AND QAIDAM BASINS |
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| Gao Xianzhi,Liu Guangdi,Liu Zhen.DIFFERENCE IN AGES OF PETROLEUM GENERATION AND ACCUMULATION IN THE JURASSIC BETWEEN THE YANQI AND QAIDAM BASINS[J].Chinese Journal of Geology,2003,38(3):361-366. |
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| Authors: | Gao Xianzhi Liu Guangdi Liu Zhen |
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| Institution: | Key Laboratory for Hydrocarbon Accumulation Mechanism, Ministry of Education, University of Petroleum, Beijing 102249 |
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| Abstract: | The Yanqi and Qaidam Basins are two Jurassic ones in the northwest China. The difference between the both in the strength of tectonism during the Meso Cenozoic resulted in some differences in ages of petroleum generation and accumulation, and in occurrences of the petroleum. According to the results of the simulation of petroleum generation, the data of homogenization temperatures and the normal hydrocarbons of the inclusions in the Jurassic reservoirs, it was concluded that the petroleum in the Yanqi Basin mainly generated at the end of the Middle Jurassic, and the petroleum accumulated during Late Jurassic and Early Cretaceous; there were two generations of the petroleum in north region of the Qaidam Basin, generated in Middle Jurassic and Early Neogene respectively, and accumulated mainly in Neogene. Both of the basins represented two accumulational models in NW China: early accumulation in Jurassic reservoirs and late accumulation in Tertiary reservoirs, respectively. |
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| Keywords: | Jurassic petroleum system Ages of petroleum accumulation Models of petroleum accumulation Inclusions The Yanqi and Qaidam Basins |
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