宋站南地区扶二组沉积微相特征及其与油气的关系
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摘要
综合利用地震、岩心、测井、录井等资料,对宋站南地区扶余油层扶二组的沉积微相进行了研究。根据宋站南地区扶余油层地震属性和地震剖面特征,推测宋站南地区扶余油层为河流相沉积。以沉积岩颜色、岩石的结构特征、组合韵律以及测井曲线特征为划分沉积微相的标志,指出了研究区扶二组发育河道、决口河道、冲积扇和河漫滩4种沉积微相。从油气富集机理上论述了研究区扶二组油气分布主要与相控下的河道砂体和决口河道砂体密切相关,指出了宋站南地区扶二组油田开发的有利相带。
The sedimentary microfacies in the Fuyu Ⅱ formation,Southern Songzhan,Songliao Basin have been studied by using the data of seism,core,logging and mud logging.Based on the seismic attributes and seismic profile characteristics of the Fuyu reservoir,it is inferred that the reservoir belongs to fluvial facies sedimentation.The color of sedimentary rocks,structural features of the rocks,combination rhythms and logging curve characteristics are used as the demarcations to divide the sedimentary microfacies and it is concluded that four kinds of sedimentary facies,i.e.fluvial channel,crevasse channel,alluvial fan and alluvial flat are developed in the Fuyu II formation of the study area.According to the mechanism of hydrocarbon accumulation,it is concluded that the oil and gas distribution in the Fuyu Ⅱ formation of the study area is closely related to the sand bodies controlled by the fluvial channel facies and crevasse channel facies,and the favorable facies belts for development in the Fuyu Ⅱ formation of Southern Songzhan area are identified.
The sedimentary microfacies in the Fuyu Ⅱ formation,Southern Songzhan,Songliao Basin have been studied by using the data of seism,core,logging and mud logging.Based on the seismic attributes and seismic profile characteristics of the Fuyu reservoir,it is inferred that the reservoir belongs to fluvial facies sedimentation.The color of sedimentary rocks,structural features of the rocks,combination rhythms and logging curve characteristics are used as the demarcations to divide the sedimentary microfacies and it is concluded that four kinds of sedimentary facies,i.e.fluvial channel,crevasse channel,alluvial fan and alluvial flat are developed in the Fuyu II formation of the study area.According to the mechanism of hydrocarbon accumulation,it is concluded that the oil and gas distribution in the Fuyu Ⅱ formation of the study area is closely related to the sand bodies controlled by the fluvial channel facies and crevasse channel facies,and the favorable facies belts for development in the Fuyu Ⅱ formation of Southern Songzhan area are identified.
引文
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[2]高瑞祺,蔡希源.松辽盆地油气田形成条件与分布规律[M].北京:石油工业出版社,1997:50-60.
[3]李淑筠,高彦楼,唐振海,等.扶杨油层砂体综合预测技术[J].大庆石油地质与开发,2002,21(4):11-13,82.
[4]单玄龙,胡金祥,任利军,等.松辽盆地乾安地区青山口组三段沉积微相特征[J].地质学报,2008,82(1):65-71.
[5]苏燕,杨愈,白振华,等.密井网区井震结合进行沉积微相研究及储层预测方法探讨——以大庆杏树岗油田杏56区为例[J].地学前缘,2008,15(1):110-116.
[6]李玉兰,陈国俊,吕成福,等.松辽盆地南部月亮泡地区萨尔图油层Ⅰ砂组沉积微相研究及有利区带预测[J].沉积学报,2008,26(2):265-270.
[7]国景星,戴启德.东营凹陷中央构造带西段砂三中沉积微相研究[J].石油大学学报:自然科学版,2001,25(6):16-21.
[8]王雅春,赵金涛,王美艳.松辽盆地宋站南地区扶杨油藏运聚成藏机制及主控因素[J].沉积学报,2009,27(4):752-759.
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