琼东南盆地构造演化经历了断陷、断拗和拗陷 3个时期 ,断陷期构造演化控制了盆地的整体构造格局。从盆地构造演化和转换带角度对 BD19- 2构造的形成机制和形成过程进行了探讨 ,认为该构造为一聚敛叠覆型转换带 ,是盆地构造演化的产物 ,其形成与近南北向断裂的活动直接相关。从油气生、储、运、聚等方面综合分析 ,BD19- 2构造具有较好的勘探前景 The tectonic evolution of Qiongdongnan Basin experienced three periods of fault depression, fault depression and depression. The tectonic evolution of the Qiangtang Basin controlled the overall structural pattern of the basin. The formation mechanism and formation process of BD19-2 structure are discussed from the perspective of tectonic evolution and transition zone of the basin. The structure is considered to be a convergent and overlying transition zone, which is the product of tectonic evolution of the basin. Its formation is near to the north-south fault Activities are directly related. Based on the comprehensive analysis of hydrocarbon generation, storage, transportation and polygons, BD19-2 has a good exploration prospect