复合分流河道砂体内部单河道划分——以萨北油田北二西区萨Ⅱ1+2b小层为例  

Identification of single channel in compound distributary sand body——case of SⅡ1+2b layer of westⅡ region,3rd block of Daqing Oilfield

作　　者：周银邦[1,2] 吴胜和[2] 岳大力[2] 刘志鹏[2] 刘江丽[2] 钟欣欣[2] 

机构地区：[1]中国石化石油勘探开发研究院,北京100083 [2]中国石油大学(北京)资源与信息学院,北京102249

出　　处：《油气地质与采收率》2010年第2期4-8,共5页Petroleum Geology and Recovery Efficiency

基　　金：教育部高等学校博士点专项科研基金项目"地下储层构型预测与建模的模式拟合方法研究"(20060425004);国家高技术研究发展计划重大项目"863"计划"储层内部构型三维建模技术研究"(2008AA06Z206)

摘　　要：以萨北油田北二西区萨Ⅱ1+2b小层为例,在现代沉积和露头的指导下,利用密井网资料,建立了研究区复合分流河道砂体内部单河道的同层不同期和同层同期2种模式。基于分流河道砂体规模,按照高程差异、河间砂体、废弃河道以及河道砂体厚—薄—厚特征等4种单河道识别标志,在三维视窗内对连井剖面进行多角度观察和分析,识别单河道边界,在研究区北东方向识别出4条单河道,单河道宽度约为250～450m。Taking the west of the second region 3rd block in Daqing Oilfield S Ⅱ 1 + 2b layer as an example,logging data in dense spacing ar-ea are used to establish two models of single channel in study area which are synchronous but not simultaneous model and syn-chronous and simultaneous model in compound sand body.The boundary of single channel is identified by observation and analy-sis for connecting-well section with multiple angle in three-dimensional window under the guidance of the scale in distributary channel which are based on four recognition:elevation difference,interchannel sand,abandoned channel and 'thick-thin-thick' fea-tures of channel sand.Four single channels are identified in southeast of the study area through the research,the width of the sin-gle channel is about 200-450m,This is of great significance for further analyses the architecture,and for the optimization of the inject ion-product ion system in oilfield and improvement of development effectiveness.

关 键 词：储层构型 单河道 点坝 废弃河道 分流河道 萨北油田 

分 类 号：TE111[石油与天然气工程—油气勘探]