西峰油田董志区长8_1地层沉积微相的平面展布特征研究  

Characteristics of the Lateral Distribution of the Sedimentary Micro-facies of Chang 8_1 Unit in Dongzhi Region,Xifeng Oilfield

作　　者：黄文芳[1] 张春生[1] 万单夫[2] 曾凡成[1] 万单静[3] 

机构地区：[1]长江大学地球科学学院,荆州434023 [2]长庆油田勘探开发研究院,西安710021 [3]中原油田陕北勘探开发处,濮阳457001

出　　处：《地质调查与研究》2007年第4期252-257,共6页Geological Survey and Research

基　　金：厂校合作重点项目

摘　　要：通过岩石类型、粒度分析、沉积构造特征、测井相分析,并结合区域地质背景,认为西峰油田董志区属于辫状河三角洲前缘沉积,共识别出水下分流河道、水下天然堤、残余河口坝、分流间湾等4个沉积微相类型,其中水下分流河道微相是长81储层的主要沉积微相。水下分流河道自西南向东北方向延伸,主要呈现四个水下分支河道。Through rock type s, grain size analysis, sedimentary structural features and electrofacies analysis, combining with regional geological setting, we consider that Dongzhi region in Xifeng Oilfield attributes braided delta front sedimentalion. We reeognite four sedimentary microfacies types of underwater distributary channels, subsea natural levees, residual mouth bars and interdistributary bays. And underwater distributary channels are mainly sedimentary microfacies of Chang 81 reservoir. The underwater distributary channels extend from southwest to northeast, and mostly present four underwater branch channels.

关 键 词：沉积微相 董志区 西峰油田 

分 类 号：P512.2[天文地球—地质学]