Rich hydrocarbon accumulation area is usually associated with structure-lithology trap, fault trap and lentoid sand trap.

有利性、构造性、断块及断层类型。

The secondary dolomite and paleokarst of the Lower Permian Series in Sichuan Basin is one of the important atectonic reserviors in the basin.

四盆地下二叠统中次生白云及古下二叠统主要的非构造储层之一。