济阳坳陷冶里-亮甲山组次生白云岩储集空间成因分析

在岩心观察的基础上，利用薄片、扫描电镜、荧光分析等技术手段，对济阳坳陷下奥陶统冶里——亮甲山组次生白云岩储集空间成因进行了深入研究。研究认为其储集空间组合以裂缝——孔洞型为主，其成因受岩性、成岩后生作用、构造作用等因素的控制；储层发育是在岩性因素的基础上，叠加成岩作用、构造作用和溶蚀作用改造的结果；溶蚀作用通常沿先存裂缝、角砾问残存孔缝或在微孔隙较发育的岩石中发育，使各类储集空间溶蚀扩大。

Analysis on origin of the secondary dolomite reservoir space of Yeli -Liangjiashan formation in Jiyang Depression

Thorough study of the secondary dolomite reservoir space was made in Yeli - Liangjiashan formation of lower Ordovician system in Jiyang Depression using the technologies of thin section, SEM and fluorescence analysis based on the core observation. The results show that fracture - vug type was dominating in its reservoir space assemblage, its origin was controlled by lithology, epidiagenesis, tectonic action and some other factors. Based on lithology factor,the reforming result of superposition diagenesis, the tectonic action and dissolution action made the reservoir develop. The dissolution always developed along the primary fractures , interbreccia crevice or rock with micro channels so as to dissolve extensively in various reservoir space.