【摘要】 钻井资料证实 ,东海盆地丽水凹陷下第三系明月峰组普遍存在异常高压。作者综合了地质、钻井、测井、测试等多方面资料 ,研究了丽水凹陷异常高压的类型、成因机制及特征 ,分析了异常高压对油气运聚、成藏机制和油气分布规律的控制作用 ,总结出在异常高压作用下油气成藏的 3种模式 ,即在异常高压封隔层之上的砂岩成藏模式、在超压层内部的成藏模式和在封隔层之下的成藏模式。这些模式对油气勘探与开发具有重要的指导意义。更多还原

【Abstract】 It is proved by well data that abnormal high-pressure exists widely in the Paleogene Mingyuefeng Formation of the Lishui Sag,the Donghai Basin.In this paper,the geologic,drilling, logging and testing data are synthesized,the types,genetic mechanism and characteristics of abnormal high-pressure in the Lishui Sag are studied, and the control action of abnormal high-pressure to hydrocarbon migration and accumulation, pool-forming mechanism and hydrocarbon distribution rules is analysed.At last,three models of hydrocarbon accumulation under abnormal high-pressure are summarized,that is,the sandstone accumulation model above abnormal high-pressure sealing layers,the accumulation model within overpressure layers and the accumulation model under sealing layers.These models have important directive significance to hydrocarbon exploration and development.更多还原