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以录井和测井资料为基础,通过岩心观察、薄片鉴定、物性分析和扫描电镜观察等技术手段,深入研究了临南洼陷南部沙三段下亚段碎屑岩储层的宏观展布特征和微观特征。研究结果表明,储层的沉积微相、埋深以及溶蚀作用是影响储层物性的主要因素。影响储层产能的主要因素是储层的物性和埋深,通过对产能影响因素的分析,确定了研究区的有效储层下限及评价标准,并对沙三段下亚段储层进行了综合评价和分类,具体确定了有利储集相带的分布范围,形成了一套适合临南洼陷的储层综合评价方法。储层综合评价结果表明:Ⅰ类和Ⅱ类储层为有效储层,一般能获得较好的工业产能。因此,Ⅰ类和Ⅱ类储层发育区为研究区构造-岩性油气藏的有利勘探区。
Based on logging and well logging data, the macro-distribution of clastic reservoirs in the lower third member of Shahejie Formation in southern Linnan subsag is studied in detail by core observation, slice identification, physical property analysis and scanning electron microscopy. Features and micro-features. The results show that the reservoir sedimentary microfacies, burial depth and dissolution are the main factors affecting reservoir physical properties. The main factor affecting reservoir productivity is the physical properties and depth of the reservoir. By analyzing the influencing factors of production capacity, the effective reservoir limit and evaluation criteria of the study area are determined, and the reservoir of the Lower Member of the third member of the Third Member is integrated Evaluation and classification, specifically to determine the distribution of favorable facies belts, formed a set of suitable reservoir comprehensive evaluation method of Lin Nan Depression. The results of reservoir comprehensive evaluation show that the type I and type II reservoirs are effective reservoirs, and generally good industrial production can be obtained. Therefore, Class I and II reservoir development areas are favorable exploration areas for structural-lithologic reservoirs in the study area.