| 莺琼盆地中新统海相烃源岩地球化学特征及生烃潜力评价 |
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| 引用本文： | 王元,李贤庆,王刚,徐新德,刘海钰.莺琼盆地中新统海相烃源岩地球化学特征及生烃潜力评价[J].现代地质,2018,32(3):500. |
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| 作者姓名： | 王元 李贤庆 王刚 徐新德 刘海钰 |
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| 作者单位： | 1中国矿业大学(北京) 煤炭资源与安全开采国家重点实验室，北京100083；
2中国矿业大学(北京) 地球科学与测绘工程学院，北京100083；3中海石油(中国) 有限公司 湛江分公司，广东 湛江524057 |
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| 基金项目： | 国家科技重大专项(2016ZX05007-003)；中央高校基本科研业务费专项资金资助项目(2010YM01)；中海石油(中国)有限公司湛江分公司委托项目(GC-2016-ZC-2073)。 |
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| 摘 要： | 通过有机碳测定、岩石热解分析、显微组分定量分析、饱和烃色谱、色谱-质谱等实验分析，对莺琼盆地中新统海相烃源岩的地球化学特征进行了研究，探讨了不同层位烃源岩的生烃潜力。结果表明：莺琼盆地中新统海相烃源岩有机质丰度总体较低，大部分烃源岩为中等烃源岩，有机质类型以Ⅱ2型和Ⅲ型为主，有机质热演化主要处于成熟阶段。烃源岩显微组分组成具有富含镜质组、壳质组+腐泥组次之、贫含惰性组的特征。烃源岩沉积环境主要为弱氧化-弱还原环境，具有陆生高等植物和低等水生生物生源混合输入的特征。莺歌海盆地梅山组烃源岩综合评价为中等烃源岩，生烃潜力相对较好，三亚组烃源岩综合评价为较差—中等烃源岩，具有一定的生烃潜力。琼东南盆地梅山组和三亚组烃源岩综合评价为中等烃源岩，具有相当的生烃潜力。
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| 关 键 词： | 海相烃源岩 地球化学特征 显微组分 生物标志物 生烃潜力 莺琼盆地 |
Geochemical Characteristics and Hydrocarbon Generation Potential of
Miocene Marine Source Rocks in the Ying Qiong Basin |
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| WANG Yuan,LI Xianqing,WANG Gang,XU Xinde,LIU Haiyu.Geochemical Characteristics and Hydrocarbon Generation Potential of
Miocene Marine Source Rocks in the Ying Qiong Basin[J].Geoscience——Journal of Graduate School,China University of Geosciences,2018,32(3):500. |
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| Authors: | WANG Yuan LI Xianqing WANG Gang XU Xinde LIU Haiyu |
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| Institution: | 1State Key Laboratory of Coal Resources and Safe Mining，China University of Mining and Technology，Beijing100083，China；
2College of Geoscience and Surveying Engineering，China University of Mining and Technology，Beijing100083，China；
3Zhanjiang Branch, CNOOC Ltd，Zhanjiang, Guangdong524057, China |
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| Abstract: | Based on the analysis of organic carbon，rock eval pyrolysis，maceral identification，saturated hydrocarbon chromatography and chromatography mass spectrometry，geochemical characteristics of the Miocene marine source rocks in the Ying Qiong Basin were studied. The hydrocarbon generation potentials of different source rocks were discussed. The results indicate that the organic matter abundance of the Miocene marine source rocks are generally low, most of which are medium source rocks. Organic matters comprise mainly type Ⅱ2 and Ⅲ, and their thermal evolution is mainly in the mature stage. The maceral composition of the studied samples is dominated by vitrinites, and the inertinite contents are relatively low. Sedimentary environment of the source rocks was weakly oxidizing to weakly reducing, and the organic matter may have be originated from terrestrial higher plants and lower aquatic algae. Comprehensive source rock evaluation on the Meishan Formation in the Yinggehai Basin indicates that they are medium source rocks with relatively high hydrocarbon generation potential, whereas source rocks of the Sanya Formation are poor medium ones and have minor hydrocarbon generation potential. The Meishan and Sanya formations in the Qiongdongnan Basin contain medium source rocks, and have certain hydrocarbon generation potential. |
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| Keywords: | marine source rocks geochemical characteristics maceral biomarkers hydrocarbon generation potential Ying Qiong Basin |
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