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下二叠统和上三叠统储集层是四川盆地油气主力产层。在对其水动力场控制因素分析研究的基础上，对实测地层压力资料进行数据处理，分别建立了P_1；和T_3地层压力预测模型。地层埋深、北隙度、构造抬升率和褶皱强度等为现今水动力场的主要控制因素，其中地层埋深对地层压力的影响最大。下二叠统和上三叠统现个水动力场是经喜山村造运动强烈改造、局部被断层分割的统一水动力场，渗入水承压系统对天然气保存起破坏作用，商业性气藏只分布在沉积水承压系统内，相对低的中压一常压区是油气保存条件优越的区域。
The Lower Permian and Upper Triassic reservoirs are the main oil and gas formations in the Sichuan Basin. Based on the analysis of the control factors of the hydrodynamic field, the data of the measured formation pressure are processed and the formation pressure prediction models of P_1 and T_3 are respectively established. Depth of formation, north gap, tectonic uplift rate and fold strength are the main controlling factors of the present hydrodynamic field. Among them, the influence of formation depth on formation pressure is the greatest. The hydrodynamic field in the Lower Permian and the Upper Triassic now is a unified hydrodynamic field that has been partially rebuilt by faults and has undergone strong reconstruction in the Xishan village. The infiltration water bearing pressure system can destroy the preservation of natural gas. The commercial gas reservoir Distributed in the confined water pressure system, the relatively low pressure in the area is an area with excellent oil and gas conservation conditions.