安塞油田高52井区长10油层沉积微相研究  

Sedimentary Microfacies of Chang10 Reservoir of Yanchang Formation in the Gao52 Area of Ansai Oil Field

作　　者：张永强[1,2] 李涛[1,2] 王进[1,2] 郑光辉[1,2] 曲春霞[1,2] 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院,陕西西安710018 [2]低渗透油气田勘探开发国家工程实验室,陕西西安710018

出　　处：《中国西部科技》2010年第17期5-8,共4页Science and Technology of West China

基　　金：1277科技创新工程项目部分成果

摘　　要：通过野外剖面观察、岩心描述和测井资料分析,确定了高52井区长10油层主要为三角洲平原亚相沉积,主要沉积微相有分流河道、河道边缘(天然堤、决口扇)、分流间湾和泛滥平原等,分流河道是本区占主导地位的骨架砂体,在图像粒度分析的基础上,通过绘制各类粒度图,对该区砂体形成的水动力条件及形成环境进行了分析。根据岩心微相和测井微相分析,对长10油层沉积微相进行了研究,掌握了沉积微相的时空展布和变化规律。同时探讨了沉积相与油气关系,结果表明:沉积微相控制着储层的物性和含油性,分流河道是主要的有利储层,为该区进一步高效开发提供了技术支持。The origins of the main sand bodies in Gao52 area of An sai Oil Field are interpreted jointly with studying field sections,core descriptions and logging date .The Chang-10 reservoir horizons in this area are delta plain,The main sedimentary microfacies include distributary channel, channel edge （levee, crevasse-splay）, distributary estuary and flood plain, The distributary channel sands constitutes the dominated reservoirs.Grain size distributions of the sandstones are investigated by measurements in this sections, The overall grain size distributions are characteristic of delta sands on the basis of cumulative curve skewness standard deviation, C-M pattern , distribution scatter and depositional setting distinguish.Sedimentary microfacies of Changl 0 reservoir of Yanchang Formation in the Gao52 area of An sai Oil Field was studied in combination with the area information of core microfacies profile and logging profile. The change regularity of microfacies were grasped and the relationship of Sedimentary microfacies and hydrocarbon were discussed.The results show： The reservoir physical property and reservoir oil saturation are controlled by microfacies.The distributary channel is the good reservoir,the reasearch of sedimentary microfacies in this paper can provide technology support for efficient development of this area.

关 键 词：安塞油田 三角洲平原亚相 长10油层 沉积微相 

分 类 号：P618.130.2[天文地球—矿床学]