鄂尔多斯东南部三山子组储层特征研究

通过对鄂尔多斯东南部寒武系三山子组的薄片资料进行分析，结合岩心观察和野外剖面资料，发现三山子组的储层岩性主要为颗粒灰岩、颗粒白云岩、砂（砾）屑白云岩等；储集空间主要为晶间孔、粒间孔和构造裂缝等；物性方面三山子组储集岩的物性较差，属于低孔-低渗储层，局部地区发现有中孔、中－高渗段储层；储层发育主要受到中央古隆起和沉积环境，白云石化作用、岩溶（溶蚀）作用、压实―压溶作用和胶结作用等成岩作用和构造作用所控制。

Characteristics of Cambrian reservoir in the southeast of Ordos Basin

Based on the data of thinsections,core observation and the field profiles of and Sanshanzi formation in the southeast of Ordos Basin,the reservoir lithology were founded are particles of limestone, dolomite particles and dolomite sand （gravel） .Reservoir space is mainly intergranular pore, intergranular pores and structural cracks.Reservoir is mainly controlled by the central palaeouplift and sedimentary context and the diagenesis, such as dolomitization, karst （dissolution）, compaction - karst,cementation and tectonic.