应用层序地层地球化学方法研究呼和湖凹陷烃源岩  

Research into hydrocarbon source rocks in Huhehu depression by application of sequence stratigraphic geochemistry method

作　　者：曹瑞成[1] 王伟明[2] 尚教辉[2] 汪庆锴[3] 

机构地区：[1]大庆油田有限责任公司海拉尔勘探开发指挥部,黑龙江大庆163000 [2]东北石油大学地球科学学院,黑龙江大庆163318 [3]大庆油田有限责任公司第二采油厂,黑龙江大庆163414

出　　处：《大庆石油学院学报》2010年第4期18-22,共5页Journal of Daqing Petroleum Institute

基　　金：国家油气重大专项(2008ZX05007-001)

摘　　要：利用层序地层学和地球化学相结合的方法,在层序格架内对呼和湖凹陷南屯组烃源岩进行精细研究,探讨层序格架内暗色泥岩的发育与分布,结合和9井南屯组密集取样的有机碳和热解分析实验结果,对比层序格架内不同体系域中有机质丰度、类型的差异,并在层序格架内进行油源分析,提高油源对比的精度.结果表明:层序格架内水进体系域的暗色泥岩广泛分布,具有厚度大、泥地比高等特点;水进体系域中暗色泥岩有机质丰度和类型优于低位域和高位域;水进体系域暗色泥岩的生标等特征与原油表现出较强的亲缘关系.In order to study source rocks of Nantun formation of Huhehu depression in the sequence framework,we use the method of sequence stratigraphic technique combined with geochemistry knowledge.According to close sampling of well He 9 in Nantun formation we combined organic carbon experimental results with pyrolysis analysis experimental results,comparing the differences of abundance and types of organic matter of different systems tract in sequence framework.We also discussed the development and distribution of dark mudstone in sequence framework,the accuracy of comparison of hydrocarbon source rocks was improved through the analysis of oil sources.The results indicated that dark mudstone of transgressive systems tract in sequence stratigraphic framework is widely distributed,with the characteristics of large thickness and the ratio of dark mudstone thickness to layer thickness is higher.Organic matter abundance and type of dark mudstone in transgressive systems tract are superior to low stand system tract and high stand systems tract.Features such as biomarker of dark mudstone in transgressive systems tract showed a strong genetic relationship with crude oil.

关 键 词：层序地层地球化学 呼和湖凹陷 烃源岩 油源对比 

分 类 号：TE121.3[石油与天然气工程—油气勘探]