from the late Middle Jurassic to the late Early Cretaceous, the paleo-gas potential in the west zone was higher than that in the east zone and the natural gas migrated eastward and then northeastward;

• 中侏罗世末期至早白平世末期，气势西高东低，天然气主要由西向东就近运移，再向北和东北向运移；