渤海湾盆地C-P不同体系域有机显微组分与生烃性——以孔古4,大参1钻井剖面为例  

Organic Macerals and Hydrocarbon Potential in Different System Tracts of C-P Source Rocks in Bohai Wan Basin——Case Study of Konggu-4 and Dacan-1 Wells

作　　者：赵厚银[1] 王延斌[1] 邵龙义[1] 

机构地区：[1]中国矿业大学资源与安全工程学院,北京100083

出　　处：《中国矿业大学学报》2004年第1期66-69,共4页Journal of China University of Mining & Technology

基　　金：国家自然科学基金项目(49972054和40172050)

摘　　要：针对层序地层学在烃源岩评价及预测中的重要作用,结合层序地层学、有机岩石学和有机地球化学的研究方法,研究了对渤海湾盆地C-P烃源岩生烃潜力和有机显微组分的分布.结果表明:C-P不同体系域的有机显微组分性质、有机地球化学特征、生烃潜力和有机相存在明显差异.在早期高位体系域中,煤中镜质组、基质镜质体B,藻类体的含量很高,泥岩中也有较多的藻类体和无定形体.因此早期高位体系域中的烃源岩有较好的生烃潜力.Sequence stratigraphy plays an important role in evaluation and predication of hydrocarbon source rocks. The present paper discusses hydrocarbon potentials and maceral distributions of source rocks in the Carboniferous-Permian (C-P) sequence stratigraphic framework of Bohaiwan Basin by sequence stratigraphy, organic petrology, and geochemistry. The results show that maceral composition, organic geochemistry, hydrocarbon potential and organic facies of C-P hydrocarbon source rock vary in different system tracts. The early highstand system tract contains coals with a high content of vitrinite, desmocollinite B and algite. And abundant algite and amorphous organic matter (AOM) can also be seen in mudstone. Therefore, hydrocarbon source rocks formed in the early highstand system tract have the best hydrocarbon potential.

关 键 词：层序地层学 烃源岩 体系域 生烃潜力 

分 类 号：P618.11[天文地球—矿床学] P539.2[天文地球—地质学]