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以岩心观察为基础,综合运用薄片、扫描电镜、粘土矿物射线衍射分析、物性分析等测试手段,对珠江口盆地东沙隆起珠江组储层特征进行深入研究。东沙隆起珠江组由下向上发育无障壁滨岸、碳酸盐岩台地和浅海3类沉积相,其中以碳酸盐岩台地沉积为主,包括台地边缘礁、台地边缘滩、台内礁、台坪及斜坡塔礁等沉积亚相。珠江组储层岩石类型以生物礁灰岩和生屑灰岩为主,储集空间以次生孔隙为主,其次为原生粒间孔、生物体腔孔等原生孔隙和裂缝,普遍存在非均质性。珠江组储层发育受海平面升降、沉积相和成岩作用的三重影响。珠江口盆地珠江组优选有利储集相带为流花地区台地边缘礁及生屑滩,较有利储集相带为惠州地区台地边缘礁、生屑滩及陆丰地区台内点礁、生屑滩。
Based on the core observation, the reservoir characteristics of the Zhujiang Formation in the Dongsha uplift area of the Pearl River Mouth Basin are studied comprehensively by means of thin slices, scanning electron microscopy, ray diffraction analysis of clay minerals and physical property analysis. The Dongsha uplift Zhujiang Formation developed from bottom to top with three types of sedimentary facies, including the coastal carbonate rock platform, the carbonate platform and the shallow sea. Among them, the carbonate platform sediments are mainly composed of platform marginal reefs, platform margin beaches, Taiwan reefs and Taiwan Ping and slope reefs and other sedimentary subfacies. The reservoir rocks in the Zhujiang Formation are dominated by reef limestone and bioclastic limestone. The reservoir space is dominated by secondary pores, followed by primary pores and fissures, such as primary intergranular pores and biological pores. There is widespread heterogeneity Sex. The Zhujiang Formation reservoir development is affected by sea level rise and fall, sedimentary facies and diagenesis. The Pearl River Mouth Basin Pearl River Formation preferred favorable reservoir facies belt in the Liuhua area platform margin and bifee shoals, more favorable facies belts in Huizhou area platform edge reefs, bite debris beaches and Lufeng area reefs, bites debris beach.