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| 辽东湾地区烃源岩特征及其主控因素 |
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姜雪1,2,邹华耀1,2,庄新兵1,2,田金强1,2,杨元元1,2
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(1.中国石油大学油气资源与探测国家重点实验室，北京102249 ;2.中国石油大学资源与信息学院，北京102249)
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| 摘要: |
| 根据烃源岩地球化学、岩石学、沉积学、构造沉降及古气候等特征，对辽东湾地区古近系3套湖相烃源岩发育的主 控因素进行综合分析。结果表明:3套烃源岩均形成于温暖湿润的还原环境,生产力高;沙三段烃源岩形成于快速沉降 的深水窄盆环境，水体根据温度和弱盐度分层，且具最高生产力;沙一段烃源岩形成于沉降速率低的浅水广盆环境，水 体根据高盐度分层，且有机质生源高等植物贡献小;东下段烃源岩形成于快速沉降的深水广盆环境，水体根据温度和弱 盐度分层;同层内烃源岩的差异受沉积相控制;沙三段烃源岩生烃潜力最好,沙一段次之，再次为东下段。 |
| 关键词: 断陷湖盆 古湖泊环境 烃源岩 沉积相 辽东湾地区 |
| DOI：10.3969/j.issn.1673-5005.2010.02.006 |
| 分类号::TE 121. 1 |
| 基金项目:国家自然科学基金重点项目(90914006);中海油重点科技攻关项目(SC06TJ-TQL4X)4) |
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| Characteristics of hydrocarbon source rocks in Liaodong Bay area and its main controlling factors |
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JIANG Xue1,2,ZOU Hua-yao1,2,ZHUANG Xin-bing1,2,TIAN Jin-qiang1,2,YANG Yuan-yuan1,2
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(1. State Key Laboratory of Petroleum Resource and Prospecting in China University of Petroleum, Beijing 102249 f China;2. School of Resource and Information Technology m China University of Petroleum, Beijing 102249, China )
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| Abstract: |
| According to the source rocks characteristics in respect to geochemistry, petrology, sedimentology, tectonic subsidence and ancient climate，the main controlling factors of three sets of Paleogene lacustrine source rocks in Liaodong Bay area were comprehensively analyzed. The results show that the three sets of hydrocarbon source rocks were all with high productivity and formed in warm，moist and anoxic condition. The source rock$ in member 3 of Shahejie formation were formed in the environment of deep-water and narrow lacustrine basin with high subsidence rate and the highest productivity. The stratified water column relied on temperature and low salinity. The source rocks in member lof Shahejie formation were formed in the environment of shallow-water and wide lacustrine basin with low subsidence rate. The stratified water column relied on high salinity. The organic matter was few higher plants. The source rocks in lower Dongying formation were formed in the environment of deep-water and wide lacustrine basin with high subsidence rate. The stratified water column relied on temperature and low salinity. The heterogeneity in the same set of source rocks was controlled by sedimentary facies. The hydrocarbon generating potentiality in member 3 of Shahejie formation is the best，member 1 of Shahejie formation is second and the lower Dongying formation is third. |
| Key words: rift lacustrine basin ancient lake environment hydrocarbon source rocks sedimentary facies Liaodong Bay area |
