十里加汗地区下石盒子组1段优质储层岩电特征与平面分布

High Quality Lithologic Electrical Characteristics and Distribution of He 1 in Shilijiahan Area in Ordos Basin

通过对十里加汗地区盒1段砂岩储层岩石学特征、孔隙结构和物性特征研究,认为盒1段为辫状河沉积,典型低孔低渗储层,以原生粒间孔和粒间溶孔为主要储集空间,储集岩具成分成熟度低、结构成熟度中等-差特征。据储层岩性、岩相-测井相、沉积微相及电性综合识别方法,对优质储层进行识别及综合评价,划分出4类优质储层。研究区优质储层分布于辫状河主分流河道发育区,储集性能好,为该区主要产层。

This article is based on the research on the petrological characteristics、pore structure and physical characteristics of He 1 in Shilijiahan area,consider that the reservoir with low porosity and low permeability of He1 is major of intergranular pore and intergranular dissolved pore.Combining reservoir lithology,lithofacies- logging facies,sedimentary microfacies,electric character,making a comprehensive research and identifying the high- quality reservoir,then divided the high-quality reservoir into four types,the high quality reservoirs actually distribute in the main braided river channel develop zone with good reservoir performance which is the main reservoir in the study area.