Feixianguan Formation of lower Triassic is an important reservoir, which mainly consists of the dense oolitic dolomite and limestone altered by the late dolomitization of oolitic bars.

• 摘要四川盆地东北部的三叠系下统飞仙关组是重要的油气储层，其储集岩体主要为经晚期白云岩化改造的鲕滩坝沉积的致密鲕粒白云岩、鲕粒灰岩。