| 伏龙泉断陷烃源岩生物标志化合物特征及意义 |
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| 引用本文： | 孙浩,张敏. 伏龙泉断陷烃源岩生物标志化合物特征及意义[J]. 复杂油气藏, 2012, 5(1): 5-8,14 |
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| 作者姓名： | 孙浩 张敏 |
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| 作者单位： | 长江大学地球化学系,湖北荆州434023／长江大学油气资源与勘探技术教育部重点实验室,湖北荆州434023 |
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| 摘 要： | 伏龙泉断陷深层的营城组和沙河子组发育的泥岩是其重要的烃源岩之一。运用生物标志化合物分析技术,讨论了其母质来源、沉积环境和成熟度。丰富的三环萜烷和"V"字型分布的规则甾烷说明母质为低等水生藻类和高等陆源植物的混合来源。姥植比小于1,伽马蜡烷值小于0.2,表明该烃源岩发育于淡水还原环境,较高含量的重排藿烷和重排甾烷说明粘土矿物含量较高。各成熟度参数都达到平衡值,说明目前处于高成熟阶段,但C29αββ/(ααα+αββ)参数值偏低,可能是由于粘土矿物的影响。
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| 关 键 词： | 烃源岩 生物标志化合物 有机地球化学 松辽盆地 |
Biomarker characteristics and significance of source rock in Fulongquan Fault Depression |
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| Sun Hao,Zhang Min. Biomarker characteristics and significance of source rock in Fulongquan Fault Depression[J]. Small Hydrocarbon Reservoirs, 2012, 5(1): 5-8,14 |
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| Authors: | Sun Hao Zhang Min |
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| Affiliation: | 1.Department of Geochemistry,Yangtze University,Jingzhou,Hubei 434023; 2.Key Laboratory of Exploration Technologies for Oil and Gas Resoureces,Ministry of Education,Yangtze University,Jingzhou,Hubei 434023) |
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| Abstract: | The mudstone developed in Yingcheng Formation and Shahezi Formation of Fulongquan Fault Depression is one of the important source rocks in this area.The organic source,depositional environment and maturity of the source rock were discussed by adopting the biomarker analysis technology.Abundant tricyclic terpane and regular sterane with＂V＂ word distribution indicated that the organic source is from the lower aquatic algae and the higher terrestrial plants.The Pr/Ph value （less than 1） and gammacerane value （less than 0.2） showed that source rocks were developed in fresh water-reductive environment.Higher concentration of diahopane and diasterane indicated that deposit environment contained a lot clay mineral.All maturation parameters can reach equilibrium value which illustrate the source rocks in high maturity stage.Meanwhile,lower C29αββ/ （ααα＋αββ） parameter may be influenced by clay mineral. |
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| Keywords: | organic geochemistry source rock biomarker Songliao Basin |
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