摘要
采用X射线衍射、扫描电镜、压汞分析等方法对EP23-1油田珠江组储层特性和储层敏感性进行了分析与评价。试验结果表明，珠江组属于中孔、中-特高渗储集层，孔隙类型主要为粒间孔，孔隙连通性普遍较好；黏土矿物主要为高岭石，其次为伊利石、伊-蒙混层，同时见少量绿泥石；储层存在强速敏、中等偏弱水敏、无-中等偏弱酸敏、中等偏弱碱敏、弱应力敏感性，岩心临界流速为0．1mL／min，临界矿化度为34511．26－43139．08mg／l，临界pH值为12．3。
By means of X-ray diffraction,scanning electron microscopy and mercury analysis,the characteristics and reservoir sensitivity of EP23-1Oilfield in Zhujiang Formation are analyzed and evaluated.Experimental results show that it belongs to medium porosity oil reservoir,where permeability is medium to super-high.The main types of intergranular porosity has good connectivity.Its clay mineral is mainly of kaolinite,the next is the illite and the interstratification of illite and montmorillonite,while a small amount of chlorite.The sensitivity evaluation indicates that there is a strong velocity sensitivity,weak-medium water-sensitivity,none to weak-medium acid-sensitivity,weak-medium base-sensitivity and weak stress-sensitivity.While the critical velocity,critical salinity are 0.1ml/min,34511.26~43139.08mg/L and pH is 12.3.
出处
《长江大学学报（自科版）（上旬）》
CAS
2014年第5期103-105,108,共4页
JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG
基金
国家科技重大专项(2008ZX05056-005
2008ZX05030-007)
