松辽盆地英台地区储层砂岩体微观结构特征研究

从储层砂岩岩体微观结构特征入手，对英台地区储层砂岩体的孔隙类型、孔隙组合特征和孔喉特征进行了研究，将砂岩体划分出粒间孔及胶结物未充满孔组合、正常粒间孔及次生粒间孔组合、溶蚀扩大孔及粒间溶孔组合、晶间孔隙组合、混合孔隙组合、胶结物内溶孔及无孔隙组合六种孔隙组合类型和大孔大喉模式、大孔小喉模式、小孔小喉模式、微孔微喉及孤立孔隙模式四种孔喉结构模式。利用这种孔隙组合类型和孔喉结构模式对储层进行分类及评价，为储层研究提供了一个新的途径和评价因素，为该区及类似地区的油气勘探和评价提供了一个重要依据。

THE MICROSTRUCTURAL CHARACTERISTICS OF RESERVOIR SANDBED IN YINGTAI REGION OF SONGLIAO BASIN

Starting with the microstructural characteristics of reverior, the pore types, pore assemblage characteristics and pore throat characteristics of reverior sandbed in Yingtai region are studied. Sandbeds are classified into six pore assemblage types, such as the intergranular pore and the consolidated packless pore assemblage, normal intergranular pore and secondary intergranular pore assemblages, solution expanded pore and intergranular pore assemblage, intercrystalline pore assemblage, mixed pore assemblage, solution intercemented pore and non pore assemblage, and four pore throat structure models, such as huge pore and huge throat model, huge pore and small throat model, small pore and small throat model, mini pore, mini throat and isolated pore model. Such classification and evaluation with pore assemblage types and pore throat structure models provide us with a new way and evaluation factor, which may lay an important fundation for oil and gas exploration in this and similar regions.