南襄盆地泌阳凹陷深层系致密砂岩普遍含油气，油气分布不像常规油气藏那样严格受圈闭条件控制，油气藏也未发现有统一的油气水界面，这是由于成岩作用演化到一定阶段后，在水层的低部位形成了一个相对成岩作用较强带，虽不能完全起到遮挡或封堵作用，但它降低了储层的导流能力；同时，油气显示层中烃类成分不断裂解，新的油气又不断注入，形成了“深盆油气藏”，该气藏具有“三层楼一夹层”特征。

 According to the characteristics of deep basin gas pools in the North America and Welson's theories about the lithogenesis of the hydrocarbon bearing and water-bearing strata, this article presents that deep basin gas pools form when a relative dry zone is created between the water saturation zone and gas water transitional zone after lithogenesis of the reservoirs evolves into a certain phrase. On the basis of well hole and seismic data, combined with the physical properties of the Pingshi sandstone in Anpeng Zhaowa Region, this article analyses formation conditions and characteristics of the deep-basin oil-gas pools, and points out that the nonmarine deep\|depression region in the lake basin also boasts positive geologic background for deep-basin gas pools.