摘要
通过对神木地区上古生界泥质岩排替压力、孔隙度、渗透率、比表面积、扩散系数、微观孔径等物性封闭参数研究，表明石千峰组物性封闭能力最强，下石盒子组的盒8、盒7次之，上石盒子组的盒1对烃类向上运移也起着很重要的封闭作用。因此对神木地区盒8、盒7、盒1的物性封闭资料进行平面评价，从而寻找出对石千峰组成藏有利的三类区域：一类分布在榆林及研究区的东南部一带，二类分布在神木及横山一带，三类分布在研究区西北角一带：
Throughing the study of physical property sealing parameter such as displacement pressure, porosity, permeability, specific surface, diffusion coefficient, microaperture and so on, it can been concluded that physical property sealing ability of ShiQianFeng for- mation is strong, second is He8, He7 of under ShiHeZi formation, and Hel of upper ShiHeZi formation also does more contributes to hydrocarbon migration to upper layers. After the plane physical property sealing ability evaluation on He8, He7, Hel in ShenMu block, three types favorable plane areas that is good for hydrocarbon＇s migration to ShiQianFeng formation have been founded.
