岩性油气藏 ›› 2014, Vol. 26 ›› Issue (4): 4449.doi: 10.3969/j.issn.1673-8926.2014.04.007
张琴1,朱筱敏1,刘畅1,季汉成1,陈祥2
摘要:
根据岩心、薄片、扫描电镜等分析化验资料确定谭庄凹陷下白垩统储层平均孔隙度为 6.1%,平均渗透率为 10.5 mD,为低孔、低渗碎屑岩储层。 除巴 1 井外,其他各井从上部商水组向下到巴村组,随着埋藏深度增大,孔隙度和渗透率基本呈下降趋势。下白垩统储层质量主要受沉积条件、成岩作用及构造作用的影响。 较低的成分和结构成熟度、较强的压实作用和胶结作用以及较弱的溶蚀作用是导致储层低孔、低渗的根本原因,而构造作用形成的裂缝均被矿物充填,对储层物性改善不大
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