论文部分内容阅读
库木库里盆地是一个以第三系为主体的沉积盆地,该盆地储层岩性主要为岩屑长石砂岩、长石岩屑砂岩,为低孔低渗储集岩。通过岩心观察,结合薄片鉴定、扫描电镜、阴极发光和物性等资料分析后认为,储层经历了压实作用、胶结作用、交代作用、溶解作用等成岩作用,目前已达到了晚成岩阶段。储集砂岩经成岩演化其原生孔隙大部分被破坏,主要以次生孔隙为主,可见成岩作用是控制该区储层物性特征的一个关键因素。在孔隙演化过程中,压实、胶结作用起主要破坏性作用,溶解作用起建设性作用。
The reservoir is a sedimentary basin mainly composed of Tertiary. The reservoirs in this reservoir are mainly lithic feldspar sandstone and feldspar lithic sandstone, and low porosity and low permeability reservoir rocks. Through the analysis of core observation, thin slice identification, SEM, cathodoluminescence and physical properties, it is considered that the reservoir has experienced diagenesis such as compaction, cementation, metasomatism, dissolution and so on. It has reached the stage of late diagenesis. The diagenetic evolution of reservoir sandstones resulted in the destruction of most of the primary pores, mainly secondary pores. Diagenesis can be seen as a key factor in controlling physical properties of the reservoir. In the process of pore evolution, compaction and cementation play a major destructive role, and dissolution plays a constructive role.