In Ordovician, the mainmigration direction during later Hercynian was SSW-NNE, while the predominatingmigration directions are multiple in Himalayan period.

• 晚海西期奥陶系油气主要充注方向为南南西-北北东向,喜山期则存在多个优势运移方向,油气相态分布沿主要运移方向呈现有序变化;