地面与地下,油区外与油区内孔隙度的不一致性表明,能否形成油藏既不决定于原始孔隙,也不取决于现今孔隙,而与聚集期孔隙密切相关。聚集期孔隙指成岩演化某一阶段与油气运移期相适应的孔隙。通过四川、贵州几个实例的分析,证明只有此类孔隙方能构成真正的储集空间,作为评价油气聚集层的重要依据。 Inconsistency between the ground and subsurface, outside the oil zone and within the oil zone indicates that the ability to form a reservoir depends neither on the original porosity nor on the current porosity, but on the porosity of the aggregate. Aggregate porosity refers to the pore that is compatible with the hydrocarbon migration during one stage of diagenesis evolution. Through the analysis of several cases in Sichuan and Guizhou, it is proved that only such pores can form a real reservoir space, which is an important basis for evaluating the hydrocarbon accumulation layer.