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大气田形成的控制因素有:古隆起、深大断裂、区域性膏盐分布及盆地深部地壳低速高导层的存在。盆地低速高导层是天然气田形成的关键因素,上述四要素的耦合之处必是大气田、超大气田的定位所在。
The controlling factors for the formation of the gas field are paleohigh, deep faults, regional gypsum salt distribution and the existence of low velocity and high permeability crust in the deep crust of the basin. The low-velocity and high-conductivity layers in the basin are the key factors for the formation of natural gas fields. The coupling of these four elements must be the positioning of large gas fields and giant gas fields.