油气成藏的孔隙门限及油藏充满度研究——以济阳坳陷为例

Porosity threshold and reservoir fullness study—A case study in Jiyang Depression

在对济阳坳陷砂岩油藏油层孔隙度下限统计分析的基础上,对储集层孔隙门限的影响因素及油藏储集层充满度进行分析研究认为,不同层位的储层具有不同的孔隙结构和成藏阻力;处于不同部位的油气具有不同的成藏动力;油藏充满度受控于储层本身的属性(即孔隙结构属性)和成藏动力2个方面。研究成果对济阳坳陷砂岩油藏的勘探具有一定的指导意义。

This paper analyzes the statistics of porosity threshold of sandstone reservoirs in Jiyang Depression and studies the influence factors on porosity threshold and reservoir fullness. The result indicates that reservoirs in different horizons have different pore structure and oil accumulation resistance; hydrocarbons in different locations have different accumulation kinetics; and reservoir fullness was subject to both intrinsic reservoir property(i.e. pore structure) and accumulation kinetics. The achievement of this study may guide sandstone reservoir exploration in Jiyang Depression.