岩性油气藏 ›› 2016, Vol. 28 ›› Issue (3): 7485.doi: 10.3969/j.issn.1673-8926.2016.03.011
柴 毓1,2,王贵文2,3
Chai Yu1,2, Wang Guiwen2,3
摘要:
受沉积、成岩及构造等多种地质作用的影响,川中安岳地区须家河组储层较致密、物性较差且非均质性较强。 为了更精确地预测优质储层的分布及其内部储集性的差异,利用岩心、薄片、压汞及测井等资料,根据岩石物理相的概念,对川中安岳地区须二段致密砂岩储层的岩性岩相、成岩相、裂缝相及孔隙结构相等 4 个主控因素进行研究,划分出 5 类岩性岩相、 5 类成岩相、 4 类裂缝相及 4 类孔隙结构相,建立了测井表征方法和测井识别标准,并在此基础上提出岩石物理相的分类及储层定量评价标准。 优质储层主要位于有利的岩性岩相、成岩相、裂缝相及孔隙结构相的叠加处,即有利的岩石物理相带。 根据纵向及平面上须二段储层岩石物理相的定量划分,优选出优质储集体,其主要位于斜坡中低部位相对高孔渗区和北部裂缝发育带。 岩石物理相的研究可为储集层的精细表征及优质储集体的预测和评价提供依据。
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