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通过岩心观察、薄片鉴定、物性分析、压汞实验分析等技术手段,结合储层物性测井解释结果,对其储层从沉积相特征、岩性特征、物性特征以及储集空间类型等方面进行了研究,研究发现该区储层物性较差,属低孔低渗储层,发育粒间溶孔、粒内溶孔和晶间溶孔,储层类型主要是孔洞型和裂缝孔洞型。并探索了控制储层分布的地质因素:主要是沉积相、成岩作用及构造作用。根据岩性和物性特征,该区储集岩分为四类:Ⅰ类好储层、Ⅱ类较好储层、Ⅲ类较差储层和Ⅳ类差储层。
By means of core observation, thin slice identification, physical property analysis and mercury intrusion analysis and other technical means, combined with reservoir physical logging interpretation results, the reservoir characteristics of sedimentary facies, lithology, physical properties and reservoir space types The study shows that the reservoirs in this area are poor in physical properties and belong to low porosity and low permeability reservoirs and develop intergranular, intragranular and intergranular dissolved pores. The reservoir types are mainly pore type and fracture type. And explored the geologic factors controlling the distribution of reservoirs: sedimentary facies, diagenesis and tectonics. According to the characteristics of lithology and physical properties, there are four types of reservoir rocks in this area: Ⅰ-type reservoir, Ⅱ-type reservoir, Ⅲ-type reservoir and Ⅳ-type difference reservoir.