| 利用自生伊利石K-Ar定年分析烃类进入储集层的时间 |
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| 引用本文： | 王飞宇,何萍,张水昌,赵孟军,雷加锦.利用自生伊利石K-Ar定年分析烃类进入储集层的时间[J].地质论评,1997,43(5):540-546. |
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| 作者姓名： | 王飞宇 何萍 张水昌 赵孟军 雷加锦 |
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| 作者单位： | [1]石油大学地球科学系 [2]石油勘探开发科学研究院地质所 |
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| 基金项目： | 国家自然科学基金(编号49302028)，中国石油天然气总公司中青年创新基金 |
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| 摘 要： | 烃类流体注入储层聚集成藏导致储层中自生矿物形成的抑或中止，成岩矿物同位素地质年代学分析提供了成岩矿物形成的准确时间，成岩事件年代学研究可用于定量分析油气藏形成时间。砂岩储层中自生伊利石仅在流动的富钾孔隙不介质环境下才能形成，烃类流体注入储层后伊利石形成便会中止，因此，烃类流体进入储层时间不可能早于自生伊利石的形成时间。
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| 关 键 词： | 伊利石 油气藏 形成期 砂岩储层 钾－氩定年 烃类 |
THE K-Ar ISOTOPIC DATING OF AUTHIGENIC ILLITES AND TIMING OF HYDROCARBON FLUID EMPLACEMENT IN SANDSTONE RESERVOIR |
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| Wang Feiyu,He Ping.THE K-Ar ISOTOPIC DATING OF AUTHIGENIC ILLITES AND TIMING OF HYDROCARBON FLUID EMPLACEMENT IN SANDSTONE RESERVOIR[J].Geological Review,1997,43(5):540-546. |
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| Authors: | Wang Feiyu He Ping |
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| Abstract: | Authigenic illites in sandstone reservoirs form in the presence of flowing K-rich pore water. The entrance of hydrocarbon fluids into sandstone reservoirs brings a halt to the illite-forming processes, and if the last-formed illite can be isolated and its age determined, the maximum age of hydrocarbon entrance can be constrained. K-Ar isotopic chronological analysis has shown that the ages of diagenetic illites in the Carboniferous sandstone reservoir of the Donghetang area and the Triassic condensate reservoir of the Jilake area are 24. 3-31. 8 Ma and 44. 3-49. 2 Ma respectively , which reflects that the former petroleum reservoir formed in the Oligocene, while the latter in the Eocene. |
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| Keywords: | authigenic illite K-Ar isotopic dating timing of petroleum entrance sandstone reservoir Tarim basin |
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