勘探资料证实 ,西湖凹陷内生成的油气由生烃深凹向西部和南部的古斜坡带运移。凹陷内的局部构造大多形成于中新世末期的龙井运动 幕 ,圈闭形成期晚于油气主运移期 ,致使油气运移到比斜坡带更高的海礁凸起上保存或散失了。作者利用现有东海地震资料及西湖凹陷钻井、测井及油气资源评价结果从油气运移、聚集、保存等方面探讨东海陆架盆地海礁凸起油气勘探的良好前景 The exploration data confirm that the hydrocarbons generated in the Xihu sag migrate from deep hydrocarbon generation to the ancient slope zone in the west and south. Most of the local structures in the depression formed in the late Miocene Longjing movement curtain, and the traps formed later than the main migration period of oil and gas, resulting in the migration and accumulation of oil and gas to the reef bulge higher than the slope belt. The authors use the available data from the East China Sea seismic data and drilling, well logging and evaluation results of hydrocarbon resources in the Xihu Sag to explore the good prospect of oil and gas exploration in the reefs of the East China Sea Shelf Basin from the aspects of hydrocarbon migration, accumulation and preservation