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| 川西拗陷中段天然气轻烃地球化学特征 | |
| 引用本文： | 沈忠民,王鹏,刘四兵,吕正祥,朱宏权.川西拗陷中段天然气轻烃地球化学特征[J].成都理工大学学报(自然科学版),2011,38(5). |
| 作者姓名： | 沈忠民 王鹏 刘四兵 吕正祥 朱宏权 |
| 作者单位： | 1. 油气藏地质及开发工程国家重点实验室(成都理工大学),成都,610059 2. 油气藏地质及开发工程国家重点实验室(成都理工大学),成都610059;中国石化西南分公司勘探开发研究院,成都610081 3. 中国石化西南分公司勘探开发研究院,成都,610081 |
| 基金项目： | 国家自然科学基金资助项目(41172119) |
| 摘 要： | 在对川西拗陷中段天然气轻烃地球化学特征分析基础上,探讨了轻烃在该区天然气研究中的应用。C6轻烃和C7轻烃特征表明天然气为煤型气;利用庚烷值、异庚烷值定性判别成熟度和Mango稳态催化动力学轻烃成因理论方法计算成熟度(Ro为0.83%～1.59%),结果都表明天然气处于成熟和高成熟阶段。天然气苯/正己烷和苯/环己烷值分析表明,从T3x2到J2,天然气存在水溶相和游离相2种运移相态,随深度变浅水溶相运移加强;浅层的J3和K层位天然气以游离相运移为主。轻烃配对参数对比表明:须二段天然气以自生自储为主;须四段天然气主要来自须四段烃源岩,须五段烃源岩有一定贡献,须三段烃源岩贡献较小;侏罗系和白垩系天然气主要来自须五段烃源岩,须四段烃源岩有一定贡献。 |
| 关 键 词： | 川西拗陷 轻烃 运移相态 天然气成因 气源对比 |
Geochemical characteristics of light hydrocarbon in natural gas in the middle member of the West Sichuan depression,China |
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| SHEN Zhong-min,WANG Peng,LIU Si-bing,LU Zheng-xiang,ZHU Hong-quan.Geochemical characteristics of light hydrocarbon in natural gas in the middle member of the West Sichuan depression,China[J].Journal of Chengdu University of Technology: Sci & Technol Ed,2011,38(5). | |
| Authors: | SHEN Zhong-min WANG Peng LIU Si-bing LU Zheng-xiang ZHU Hong-quan |
| Institution: | SHEN Zhong-min1,WANG Peng1,LIU Si-bing1,2 LU Zheng-xiang2,ZHU Hong-quan2 1.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu 610059,China,2.Exploration and Production Research Institute of Southwest Branch Company,SINOPEC,Chengdu 610081 |
| Abstract: | Based on the analysis of the geochemical characteristics of light hydrocarbon in natural gas in the middle member of the West Sichuan depression,the authors analyse the applications in studying the light hydrocarbon in the area.The features of C6 and C7 indicate that the natural gas is coal-related gas.The heptane and isoheptane qualitative analysis and the Mango quantity approach(Ro=0.83%~1.59%) show that this natural gas is mature and highly mature gas.The benzene/hexane and the benzene cyclohexane values... |
| Keywords: | West Sichuan depression light hydrocarbon migration phase natural gas genesis gas-source rocks correlation |
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