| 海拉尔-塔木查格盆地中部断陷带CO2气藏中CO2成因分析 |
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| 引用本文： | 张铜磊,陈践发,朱德丰,赵兴齐.海拉尔-塔木查格盆地中部断陷带CO2气藏中CO2成因分析[J].中国石油大学学报(自然科学版),2012,36(2):68-75,80. |
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| 作者姓名： | 张铜磊 陈践发 朱德丰 赵兴齐 |
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| 作者单位： | 1. 中国石油大学地球科学学院,北京102249;中国石油大学油气资源与探测国家重点实验室,北京102249
2. 大庆油田勘探开发研究院,黑龙江大庆,163712 |
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| 基金项目： | 大庆油田有限责任公司勘探开发院资助项目 |
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| 摘 要： | 以海拉尔-塔木察格盆地中部断陷带CO2气藏中的CO2为研究对象,通过组分分析、碳同位素及氦、氩同位素分析,结合研究区CO2含量和同位素数据及他人研究成果,利用排除法探讨研究区CO2的成因及来源。结果表明:研究区CO2平均含量大于85%,CO2稳定碳同位素偏轻,δ13CCO2为-13.1‰～-8.8‰,为目前已发现的具有较为特殊碳同位素组成特征的CO2气藏;尽管CO2稳定碳同位素偏轻,但通过排除法可以证明该区CO2为无机成因气的结论最为合理,且CO2应来源于上地幔岩浆脱气。
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| 关 键 词： | 海拉尔-塔木察格盆地 中部断陷带 二氧化碳 成因 排除法 |
Genetic analysis of CO2 in CO2 gas reservoirs of middle fault zone of Hailaer-Tamtsag Basin |
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| ZHANG Tong-lei
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CHEN Jian-fa
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ZHU De-feng
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ZHAO Xing-qi.Genetic analysis of CO2 in CO2 gas reservoirs of middle fault zone of Hailaer-Tamtsag Basin[J].Journal of China University of Petroleum,2012,36(2):68-75,80. |
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| Authors: | ZHANG Tong-lei CHEN Jian-fa ZHU De-feng ZHAO Xing-qi |
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| Affiliation: | 1,2(1.College of Geosciences in China University of Petroleum,Beijing 102249,China; 2.State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,Beijing 102249,China; 3.Exploration and Development Research Institute,Daqing Oilfield,Daqing 163712,China) |
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| Abstract: | Based on the research of the CO2 gas reservoir in the middle fault zone of Hailaer-Tamtsag Basin,the origin of CO2 was researched using the exclusive method by composition analysis of carbon,helium and argon isotope,data of CO2 amount and the research achievements of CO2 gas by the scholars.The results show that the average content of CO2 in the study area is more than 85%,and the value of the δ13CCO2 ranges from-13.1‰ to-8.8‰.With the characteristic of light δ13CCO2,the gas reservoir is the scarce one with a special isotopic composition.Though carbon isotopic value is relatively light,the origin of CO2 still can be identified as upper-mantle gas degassed from magma. |
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| Keywords: | Hailaer-Tamtsag Basin middle fault zone CO2 gas origin exclusive method |
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