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以文昌L低阻轻质油田的发现为背景,对其发现过程、油藏特征及成藏模式进行了研究,着重讨论了油-岩对比、浅海相储层新类型、油气输导体系与运聚优势方向、新技术等几个关键问题。研究表明,文昌组浅湖相烃源岩的排油、运油效率高,能够大规模长距离运移;珠江组一段上部发育浅海滩坝储层新类型;盆倾断裂与区域性优质海相储盖组合构成了油气输导体系;东沙构造运动导致的断裂体系构建了深层油气与上部浅海滩坝储层间的桥梁。论文还提出了“垂向运聚、次生构造-岩性”油气成藏模式,并就勘探得到的启示进行了探讨。
Based on the discovery of Wenchang L low-resistance light oilfield, the discovery process, reservoir characteristics and reservoir-forming patterns are studied. The emphasis is on the oil-rock correlation, new types of shallow marine reservoirs, oil and gas transport systems and transport Poly advantage direction, a number of key issues such as new technologies. The results show that the shallow lacustrine hydrocarbon source rocks of Wenchang Formation have high oil discharge and transportation efficiency and can migrate on a large scale for a long distance. The new type of shallow beach bar reservoirs is developed in the upper part of the Pearl River Formation and the basin- The reservoir-cap assemblage constitutes the oil and gas transport system. The fault system caused by the Dongsha tectonic movement establishes a bridge between the deep hydrocarbon and the upper shallow beach dam reservoir. The paper also proposed “vertical migration and accumulation, secondary structure - lithology” hydrocarbon accumulation mode, and explored the enlightenment.