扇三角洲沉积储层特征与定量评价——以辽河西部凹陷某试验区于楼油层为例  

Reservoir Characteristics of Fan Delta Deposits and Its Quantitative Evaluation:Taking Yulou Oil Bearing Sets in a Certain Experimental Area of West Depression in Liaohe Basin as an Example

作　　者：陈欢庆[1] 穆剑东[1] 王珏[1] 邓西里[1] Chen Huanqing Mu Jiandong Wang Jue Deng Xili(Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China)

机构地区：[1]中国石油勘探开发研究院,北京100083

出　　处：《吉林大学学报（地球科学版）》2017年第1期14-24,共11页Journal of Jilin University：Earth Science Edition

基　　金：国家科技重大专项项目(2011ZX05016-006)~~

摘　　要：随着蒸汽吞吐开采方式进入后期,储层非均质性对开发效果的影响日益凸显。以辽河西部凹陷某试验区为例,综合岩心、镜下薄片、测井、分析测试等多种资料,实现储层发育特征表征。研究区目的层属扇三角洲前缘沉积,由于水下分流河道的频繁分流改道,砂体相互切叠,储层非均质性强烈。优选充分反映储层性质影响因素的参数,基于经典的聚类分析软件平台,实现扇三角洲沉积储层定量评价。将目的层储层划分为Ⅰ类、Ⅱ类、Ⅲ类和Ⅳ类4种类型,储层分类正判率超过85%。不同类型储层发育明显受沉积相控制,Ⅰ类和Ⅱ类储层多位于水下分流河道和河口砂坝的位置,而Ⅲ类和Ⅳ类储层多位于水下分流河道间砂或前缘席状砂的位置。不同类型储层在转换热采方式时应该区别对待。With steam soaking turned into later period,influence of reservoir heterogeneity on reservoir development effect is more and more remarkable.Taking Yulou oil bearing sets in a certain experimental area in south end of westward slope of West depression in Liaohe Basin as an example,reservoir is characterized based on geological data,logging data,and testing data.A fan delta front sedimentary system formed regionally,and showed a strong reservoir heterogeneity due to frequent river diversion of underwater distributary channel.Representative parameters for reservoir properties were selected for quantitative evaluation with a clustering analysis method.The target reservoir was classified into four types,type I,type II,type III,and type IV.The types of reservoir were obviously controlled by sedimentary facies.Reservoir of type I and type II were mainly located in place of underwater distributary channel and channel mouth bar,and reservoirs of type III and type IV primarily situated inposition of sandstone between underwater distributary channels and frontal sheet sand.Each type of reservoir should be treated specifically during thermal recovery system changing.

关 键 词：辽河西部凹陷 于楼油层 储层评价 聚类分析 扇三角洲 

分 类 号：P618.13[天文地球—矿床学]