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四川西部新场上侏罗统蓬莱镇组储层物性和孔隙结构与低孔渗的上三叠统—中侏罗统致密砂岩比较，其储集条件明显变好，孔隙度一般为１５％～１８％，平均渗透率３６３×１０－３μｍ２，属致密型向常规型过渡的储层类型。储层砂体厚度自西向东有增厚的趋势，储集性也逐渐变好，但总体差异不大；有四种基本孔隙类型，孔隙宽度服从正态分布；从Ⅰ类储集岩到Ⅳ类储集岩，孔隙结构由好变坏、毛细管压力由粗歪度变为细歪度、排驱压力和饱和度中值压力由小变大、孔喉半径依次变小、储渗性依次下降，直至变为非储集岩。储渗性主要受方解石含量和粘土矿物产状的影响。
Compared with the Upper Triassic-Middle Jurassic tight sandstone of the Penglaizhen formation in the Jurassic Penglaizhen formation in western Sichuan Province, the reservoir conditions are obviously better and the porosity is generally 15% 18%, with an average permeability of 3.63 × 10-3μm2, which is a type of reservoir that transitions from a tight to a conventional type. The thickness of reservoir sandstone tends to thicken from west to east, and the reservoir property gradually becomes better, but the overall difference is not obvious. There are four basic types of pores, and the pore width obeys normal distribution. From type Ⅰ reservoir rocks to Ⅳ Type reservoir rocks, the pore structure is deteriorated, the capillary pressure changes from coarse to fine, and the median pressure of displacement and saturation increases from small to small, the pore throat radius decreases in turn, and the storage-permeability decreases in turn Until it becomes non-reservoir rock. Reservoir permeability is mainly affected by calcite content and clay mineral appearance.