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通过运用测井资料解释分析、岩石样品化验鉴定、扫描电镜观察等方法对研究区长6储集层的特征与主控因素进行分析,研究认为该区长6储层多为细小微细喉型及微孔隙喉型储层,岩石类型以粉-细粒或细-中粒长石石英砂岩及岩屑砂岩为主,具有较高的成分成熟度和结构成熟度,岩性主要是较高成熟度的内陆湖相砂岩;储集空间类型主要有残余粒间孔和粒间溶孔,该区微裂缝较发育,增加了油气储集空间;储集物性主要受沉积相和成岩作用控制,溶蚀作用和交代作用是改善储层的主要因素,而溶蚀作用的贡献最大。本次研究评价了富黄探区长6储层性质,为后期勘探提供了依据。
The characteristics and main control factors of Chang 6 reservoirs in the study area are analyzed by means of interpretation of logging data, identification of rock samples and observation by scanning electron microscopy. It is concluded that Chang 6 reservoirs in this area are mostly small and fine throat type and Micropore-throat type reservoirs are mainly composed of fine-grained or fine-grained feldspathic quartz sandstone and lithic sandstone with high compositional maturity and structural maturity. The lithology is mainly of higher maturity Of the inland lacustrine sandstone. The reservoir space types are mainly residual intergranular pores and intergranular dissolved pores, and the microfractures in this area are well developed, increasing the reservoir space for oil and gas. The reservoir properties are mainly controlled by sedimentary facies and diagenesis, Metasomatism is the main factor to improve the reservoir, while dissolution contributes the most. This study evaluates the properties of the Chang 6 reservoir in the Yellow-Rich Exploration Area and provides the basis for later exploration.