饶阳凹陷留西地区馆陶组沉积相研究

以岩心观察、测井曲线分析以及室内试验分析为基础,开展单井相、测井相、平面相等分析,对研究区馆陶组沉积微相类型、展布特征及其演化规律进行了系统全面的研究.研究表明:研究区以辫状河和曲流河沉积为主,主要发育心滩、道间滩地、道间洼地、边滩、天然堤、决口扇、河漫滩等沉积微相类型;受基准面升降与沉积物供应的作用,该区河流相砂体自下而上演化大致经历了辫状河繁盛发育期、辫-曲共存发育期、曲流河繁盛发育期以及辫状河发育期4个阶段.

Study on Sedimentary Facies of Guantao Formation in the Liuxi Area of Raoyang Depression

Based on core observation,well-logging curve analysis and analysis of laboratory tests,combined with the analysis of single well facies,logging facie,plane facies and so on, the characteristics,distribution and evolution laws of sedimentary microfacies of Guantao formation in Liuxi area were systematically studied.The results show that the sedimentary microfacies of the study area belongs to meandering river deposition and braided river deposition, and the sedimentary microfacies mainly include channel bars,overbank origin and low-lying land among the channel,point bars,natural levees,crevasse splays,flood plain. The fluvial evolution experienced four stages,which are the braided river prosperous development stage,the braided and meandering river coexistence and transforming stage, the meandering river prosperous development stage and the braided river stage.