张强凹陷沙海组碎屑岩储层的非均质性  

Anisotropy in the clastic reservoir rock of Shahai Formation in Zhangqiang Sag

作　　者：刘林玉[1] 韩小琴[2] 曲志浩[1] 陈刚[1] 

机构地区：[1]西北大学地质学系 大陆动力学教育部重点实验室,陕西西安710069 [2]中原油田分公司勘探开发科学研究院,河南濮阳475001

出　　处：《西北大学学报（自然科学版）》2002年第6期663-666,共4页Journal of Northwest University（Natural Science Edition）

摘　　要：据铸体薄片和扫描电镜观察,将张强凹陷沙海组碎屑岩储层的孔隙空间分为7种基本孔隙类型,这7类孔隙形成了孔隙型和致密型两种孔隙组合关系。研究发现:沙海组碎屑岩储层的孔隙分布和物理性质变化很大,微观非均质性较为严重;碎屑岩沉积组分的结构特征、机械压实作用、自生矿物胶结作用和不稳定组分溶解作用的不均一性,是导致张强凹陷沙海组储层孔隙结构非均质性的主要因素。The pore space of the clastic reservoir rock from Shahai Formation in Zhangqiang Sag includes seven basic types.The poretype assemblage and densetype assemblage were formed by the seven types.The pore distribution and physical properties of the clastic reservoir rock in Shahai Formation very distinctly,microscopic anisotropy is high.The inhomogeneity of texture characteristics of depositional components in clastic rock,the inhomogeneity of mechanical compaction,the inhomgeneity of cementation of authigeic mineral and the inhomogeneity of dissolution of unstable components are the main cause for the formation of the pore texture anisotropy of the reservoirs in Shahai Formation from Zhangqiang Sag.

关 键 词：碎屑岩储层 孔隙类型 非均质性 张强凹陷 沙海组 油气储层 孔隙结构 

分 类 号：P618.130.2[天文地球—矿床学]