These belts are possible to shape the main passageway of long-distance oil migration because crude remained in the fractures and pores can be seen by core and microscopic observation.

• 不整合面下的高孔、高渗带成为油气长距离运移的主要通道，在岩心、镜下均可见到风化岩石裂缝、孔隙中残留的原油。