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采用综合地质信息法和逻辑信息法对琼东南盆地主要断层的封闭性进行了详细研究,认为该区断层封闭性演化有逐渐加强和强—弱—强两类.研究表明,三亚组和梅山组沉积时期断层封闭性中等,现今断层封闭性较好;断层封闭性演化史与油气运聚的良好匹配关系是琼东南盆地形成大气田的重要条件.
The sealing of the main faults in the Qiongdongnan Basin has been studied in detail by the method of general geological information and logic information, and the evolution of the sealing of the faults has been gradually strengthened and strong-weak-strong.The research shows that the Sanya and Meishan formations During the sedimentary period, the faults have a medium sealing property, and the present fault sealing is better. The well-matched relationship between fault sealing evolution and hydrocarbon migration and accumulation is an important condition for forming large gas fields in the Qiongdongnan Basin.