Near the unconformity surface, the porosity and permeability of rock has obviously been improved.The unconformity surfaces in Permian are the main paths of oil and gas migration.

• 研究表明,二叠系内部各组地层之间呈不整合接触,在不整合面附近地层的孔隙度和渗透率明显增大,因而是油气运移的主要通道。