鄂尔多斯盆地安塞地区长6储层孔隙演化分析  

作　　者：鲁童 

机构地区：[1]长安大学地球科学与资源学院,西安710061

出　　处：《科技创新与应用》2025年第6期81-84,共4页Technology Innovation and Application

摘　　要：通过铸体薄片鉴定、扫描电镜分析等方法,对安塞地区长6储层的孔隙演化进行定量分析,建立储层孔隙演化模式。研究表明,压实作用对储层的破坏性最强,导致孔隙减少16.72%;胶结作用减孔7.61%,储层在中成岩A期,溶蚀作用对储层物性起一定的改善作用,在一定程度上延缓储层致密化的进程,增孔1.36%。孔隙演化在早成岩A期经历强烈压实—初步胶结阶段,在早成岩B期压实作用减轻,初步发育溶蚀作用。在中成岩A期胶结作用持续发育,导致储层致密化。该研究为安塞地区长6油层组下一步勘探开发提供依据。Through cast thin section identification and scanning electron microscope analysis,the pore evolution of the Chang-6 reservoir in Ansai region was quantitatively analyzed,and a reservoir pore evolution model was established.Research shows that compaction is the most destructive to the reservoir,resulting in a reduction of porosity by 16.72%;cementation reduces porosity by 7.61%.This is during the middle diagenesis A stage of the reservoir,dissolution improves the reservoir physical properties to a certain extent,delaying the process of reservoir densification to a certain extent,increasing porosity by 1.36%.The pore evolution went through a stage of strong compassition-preliminary cementation during the A stage of early diagenesis,and the compaction was reduced during the B stage of early diagenesis,and dissolution was initially developed.During the A stage of middle diagenesis,cementation continued to develop,leading to reservoir densification.This study provides a basis for the next step of exploration and development of the Chang 6 oil-bearing formation in Ansai region.

关 键 词：孔隙演化 成岩作用 延长组 安塞地区 鄂尔多斯盆地 

分 类 号：P618.13[天文地球—矿床学]