大芦家地区渐新统东二_1亚段三角洲前缘砂体微相及储集性研究  

Study on Microfacies and Reservoir Characteristics of the Delta-Front Sandbody of the First Submember of the Second member of Dongyin Formation,Oligocene Series in Dalujia Area

作　　者：欧成华[1] 陈景山[1] 

机构地区：[1]西南石油学院

出　　处：《沉积学报》1998年第4期85-90,共6页Acta Sedimentologica Sinica

摘　　要：通过岩芯、录井、测井资料的综合分析，发现大芦家地区渐新统东二段主要由三角洲前缘亚相组成，砂体的成因类型主要包括三角洲前缘亚相的河口坝、水下分流河道、水下天然堤和决口扇、席状砂、远砂坝。它们不仅具有各自独特的沉积特征和测井相特征，而且其空间储集物性的分布也各不相同。此外，它们还具有较强的层内非均质性，层间非均质性和平面非均质性却较弱。The sandstone reservoir of Dongyin Formation,Oligocene Series in Dalujia area is one of the main production formation of Linpan Oil Field in the Eastern area of China.Its depositional system including delta,especially the delta front part,and its sandbody genetic type including river-mouth bar,sublacustrine distributary channel,sublacustrine levee,sublacustrine crevasse splay and distal bar,have been identified though comprehensive analysis on core,logging and well log data,and all these sandbody microfacies have different depositional characteristics,well log facies,porosity and permeability.In addition,these sandbodies have strong intraformational nonuniformity and not so strong an interstratal one.

关 键 词：砂体微相 三角洲前缘 储集性能 油气藏 

分 类 号：P618.130.2[天文地球—矿床学] P737.14[天文地球—地质学]