鄂尔多斯盆地姬塬地区长6储层物性特征及其影响因素

Properties and factors of Chang six block reservoir in Jiyuan region Ordos Basin

本文结合铸体薄片、阴极发光和扫描电镜等分析技术,认为:岩石结构和沉积相是控制储层物性的基础因素,粒径和孔隙度大小成正比,在河口坝等砂体较好的位置储层物性较好.压实作用和胶结作用破坏储层物性,而溶蚀作用、破裂作用和绿泥石薄膜作用有利于储层孔隙度的保存和孔隙度、渗透率的增加。

Adoped with casing lamella ,cathode luminescene and scanning electron microscope,the author thought that the stock structure and sedimentary facies were basic factors,and grain diameter was in direct proportion with void ratio,and the physical properties of the reservoir which is located in better region such as river mouth bar and sand body is good.Compaction and agglutination damaged physical properties of reservoir,and dissolution and chlorite membrane action is beneficial to the preservation of the reservoir and the increasing of the porosimeter and permeability.