Analysis of six cementing events indicates that the deeply buried karst during himalayan epoch is related to corrosive hydrothermal fluid and is the key period for forming porous system of the present reservoir 6期胶结事件的详细解剖表明,喜马拉雅期深埋藏岩溶主要与腐蚀性热流体作用有关,是形成现今储层孔隙系统的最关键时期。