鄂尔多斯盆地东坑——石湾地区三叠系延长组长6油组储层特征  

Reservoir Characterrsistrcs of Chang 6 of Yanchang Formation (Triassic) in Dongkeng-shiwan Area,Ordos Basin

作　　者：程平[1] 陈永峤[1] 文志刚[1] 汪凌霞[1] 

机构地区：[1]长江大学地球化学系,湖北荆州434023

出　　处：《内蒙古石油化工》2008年第17期132-134,138,共4页Inner Mongolia Petrochemical Industry

摘　　要：本文从储层的岩性、孔隙类型及影响孔隙结构的因素等方面对长6储层进行分析,揭示了储层的微观特征,为东坑——石湾地区进一步油气勘探和开发提供详细的理论依据。结果表明,三角洲前缘亚相沉积的长6储层为低孔低渗特低渗储层,孔隙类型主要包括原生粒间孔、粒间溶孔和粒内溶孔。压实作用、岩石粒度及泥质含量是影响研究区储层孔隙结构的主要因素,而粒度大小、泥质含量受沉积相控制,因此必须加强研究区沉积微相的研究。The pore structure character of Chang 6 reservoir was analyzed by studying the effect of lithology,pore types and clay minerals on pore structure. It discloses the main characteristics of reservoir microproperty. This study provides basis for further exploration and development in this area. Effect shows that,as delta front facies deposition, Chang 6 reservior presents low mineralogic maturity and high texture maturity,low to moderate porosity and low permeability;its pore structure includes primary intergranular pore, intergranular dissolved pore and intragranular dissolved pore. Diagenesis, granularity and shale content have main effect on pore structure. Sedimentary micro-facies control granularity and shale content. So the sedimentary microfacies of the reservoirs in this area must be intensified.

关 键 词：孔隙结构 储层特征 长6储层 东坑-石湾地区 鄂尔多斯盆地 

分 类 号：P618.130.2[天文地球—矿床学] F832.39[天文地球—地质学]