东濮凹陷河岸地区沙一段沉积微相研究

古近系沙河街组沙一段是河岸地区开发中的一个主要接替层系,在地质综合研究的基础上,结合沉积环境、岩心观察、地震、钻测井等资料,对该区储层岩性、沉积构造及测井曲线特征等相标志进行了深入研究。在单井相分析基础上,进行连井对比,分析认为,河岸地区沙一段主要为浅湖-半深湖-三角洲前缘-前三角洲交替沉积环境,划分出了水下分流河道、河口砂坝、支流间湾、前缘席状砂、远砂坝等沉积微相。并对该区内微相的空间分布特征进行分析,探讨了沉积微相带与储层物性及含油性的关系。

Study on microfiches of the 1st member of shahejie formation in the Hean area of Dongpu Depression

The 1st Member of Shahejie Formation is the most important development bed series in Hean area.In the comprehensive geology research.The farcies markers have been studied deeply on reservoir lithology,sedimentary tectonics and well logging curves feature in the study area,joining with sedimentary environments,core observation,earthquake,drill-logging data.In single phase analysis basis,Were comparing with wells Analyzed that the sedimentary environment of Hean area is a period of main shallow lake-half a deep lake-delta front-former delta alternate sedimentary environment,which have been distinguished as follows subaqueous distributary river course,river-mouth bar,between tributary wan,front sheet sands,distal bar and other microfacies.The paper analyzes their distribution the discusses the relation of the micro fancies with lithology,physical properties and oil of the reservoirs.