东营凹陷南斜坡东段沙河街组砂岩输导层连通性量化表征  

Quantitative characterization of Shahejie Formation sandstone carrier connectivity of the eastern part of the south slope in Dongying sag

作　　者：雷裕红[1,2] 罗晓容[1,2] 张立宽[1,2] 宋成鹏[3] 程明[1,2] 

机构地区：[1]中国科学院油气资源研究重点实验室,北京100029 [2]中国科学院地质与地球物理研究所,北京100029 [3]中国石油勘探开发研究院北京100083

出　　处：《石油学报》2013年第4期692-700,共9页Acta Petrolei Sinica

基　　金：国家自然科学基金项目(No.41102078);国家重大科技专项(2011ZX08005-004)资助

摘　　要：以东营凹陷南斜坡东段王家岗油田沙河街组二段为重点解剖对象,利用开发动态资料,结合原油全烃气相色谱指纹特征分析,确定了砂岩输导体间的连通性,建立了利用砂地比判定砂体连通性的数学概率模型,并应用该模型量化描述了东营凹陷南斜坡东段沙河街组主要砂岩输导层的连通特征。研究表明,当砂地比低于20%时,砂体间基本不连通;当砂地比大于20%时,砂体间连通的概率随砂地比增加而逐渐变大;当砂地比大于80%时,砂体间完全连通。除王家岗油田、八面河及研究区西南部一带外,沙河街组三段中亚段输导层砂体连通性较差,沙河街组三段上亚段和沙河街组二段输导层砂体间连通性良好。Based on analysis of production performance data and gas chromatography fingerprint characteristics of oils from the second member of Shahejie Formation（Es2） in the Wangjiagang oilfietd, Dongying sag, connectivity among sand bodies was investigated and a mathematical probability model was established, and with this model, the sandstone carrier connectivity of the Shahe]ie Formation in the eastern part of the south slope of the Dongying sag was quantitatively described. The results showed that when the net-to- gross ratio is lower than 20%, sand bodies are isolated from each other; while the ratio is greater than 20%, the connectivity proba bility increases gradually with increase of the net-to-gross ratio; sand bodies are absolutely connected together when the net-to-gross ratio is greater than 80%. In particular, the connectivity probability of Es32 sandstone carriers is lower than 20% except for several areas such as the Wangjiagang oilfield, Bamianhe area and the southwest part of the study area. The connectivity of Es31 and Es2 sandstone carriers is very good, generally greater than 80%.

关 键 词：砂岩输导体 连通性 量化表征 东营凹陷 沙河街组 

分 类 号：TE112.23[石油与天然气工程—油气勘探]