Via comprehensively utilizing data of seismic,logging,mud logging and lithology,the paper establishes the stratigraphic framework of Middle Es3 in Minfeng Sag,and divides Middle Es3 into six stages. During the six stages,the delta presents continuous progradation process from east to west. Four types of turbidite sand bodies are formed by the delta front slump,which are sliding turbidite sand body,slump turbidite sand body,debris flow turbidite sand body and far⁃source turbidite sand body. The earlier three types of sand bodies have significant oil and gas geological significance. Therefore,this paper explores the distribution rule of turbidite sand body within Minfeng Sag,by virtue of the seismic inversion and attribute extraction approaches,as well as combining with single well data and conventional geological methods. The study finds that the distribution of turbidite sand body is controlled by the evolution process of delta deposition. In pace with the delta’s constant progradation to the west,the turbidite sand bodies superpose mutually on vertical,and distribute along the delta front contour and present as“horseshoe”shape on plane.%综合利用地震、测井、录井及岩性等资料，建立民丰洼陷沙三中亚段地层格架，划分为6个期次，三角洲由东向西不断进积。由三角洲前缘滑塌形成4种类型浊积砂体：滑动浊积砂体、滑塌浊积砂体、碎屑流浊积砂体和远源浊积砂体。前三种油气地质意义显著，故借助地震反演、属性提取方法，结合单井资料和常规地质手段，探讨浊积砂体在民丰洼陷内展布规律。研究发现，浊积砂体展布受三角洲沉积演化过程控制，随三角洲进积不断向西推移，垂向上相互叠置，平面上沿三角洲前缘轮廓呈“马蹄”形分布。
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