横山地区长6储层孔隙结构特征及分类

Characteristics and Classification of Chang6 Reservior Pore Structure in Heng Shan Region

据大量岩石薄片及扫描电镜分析,长6砂岩储集层的孔隙类型主要有残余粒间孔隙、溶蚀粒间孔隙、溶蚀粒内孔隙、填隙物内微孔隙和微裂缝孔隙等。在定性基础上进行定量分析研究,参考砂岩毛管压力曲线形态特征,并依据排驱压力和中值半径交会图,将横山地区长6储层分为三种孔隙结构类型。

According to a great quantity of petrographic thin section and SEM analysis, The pore style of sandstone reservoir mainly include remanent intergranular pore, corrosion intergranular pore, corrosion intragranular pore, micropore in interstitial material, microcrack pore etc. Quantitative analysis and research on the bace of determine the nature, refer to sandstone CP curve form characteristic, moreover in the light of X--plot of drainage pressure and midvalue radius, Chang6 Reservior is divided into 3 pore structure styles in Heng Shan Region.