华池油田华152区低渗透砂体层内非均质性  

Intrafomational Heterogeneity of Low-permeability Sandbodies in Block H152 of Huachi Oilfield

作　　者：李延林[1] 鲁金凤[1] 段光亮[1] 方正一 李群[3,4] 

机构地区：[1]延长油田股份有限公司下寺湾采油厂,陕西甘泉716100 [2]延安正宏石油工程技术服务有限公司,陕西延安716000 [3]有色金属成矿预测与地质环境监测教育部重点实验室(中南大学) [4]中南大学地球科学与信息物理学院,湖南长沙410083

出　　处：《长江大学学报（自科版）（中旬）》2015年第7期17-20,3-4,共4页Journal of Yangtze University(Nature Science Edition)

基　　金：国家科技重大专项(2011ZX05002-005)

摘　　要：依据岩心、钻井、测井、分析化验等资料的综合分析，鄂尔多斯盆地华池油田华152区上三叠统延长组长3油层组发育三角洲相沉积，微相类型主要有水下分流河道、水下天然堤、河口坝、远砂坝、席状砂等5种，其孔隙度为1．2％～23．1％，渗透率为0．0J～72．2mD，属于中、低孔一低渗储层。根据单砂体内在垂向上的岩性、孔隙度、渗透率等参数以及测井响应特征，识别出正韵律、反韵律、复合韵律等3种基本的层内非均质类型。Based on the data of rock cores,drilling,logging and analysis,delta facies were mainly developed in the Chang3 Reservoir of Yangchang Formation,Upper Triassic in Block Hua 152 of Ordos Basin.There were five microfacies,such as distributary channel,natural barrier,river-mouth bar,distal bar and frontal sheet sand.Their porosity ranged from 1.2%to 23.1%,and their permeability ranged from 0.01 to 72.2mD,these sandbodies mostly belonged to the type of midel-low porosity and low permeability.Three basic types of intraformational heterogeneity are recognized by the vertical pattern of lithology,porosity,permeability and logging response,they are normal rhythms,reversed rhythms and composite rhythms.The complexity of intrafomational heterogeneity is largely determined by the reservoir microfacies,depositional sequence and hydrodynamics.

关 键 词：低渗透砂岩 层内非均质性 砂体微相类型 华152区 

分 类 号：TE122.2[石油与天然气工程—油气勘探]