摘要
以储层地质学、沉积岩石学理论为基础,对合水-正宁地区长72油层的岩心、测井及物性等资料进行系统分析,结果表明:区内储层岩石类型主要为岩屑质长石砂岩和长石质岩屑砂岩;孔隙度、渗透率均较低,属典型的低孔-特低孔、特低渗-超低渗储层;储层由下至上、由南西至北东有逐渐变好的趋势;储集空间类型以长石溶孔和粒间孔为主;孔隙度、渗透率与分选系数呈正相关。
Based on the theories of reservoir geology and sedimentary lithology,the cores and logging data of Chang 72 Reservoir in Heshui-Zhengning Area were systematically studied.The results indicate that the rock types in the area are mainly of lithic arkose sandstone and arkose lithic sandstone with low porosity and permeability,they belong to a low porosity and permeability and extra-porosity and permeability reservoir.It tends to be good gradually from bottom up and from the SW to NE,the reservoir space types are mainly of feldspar dissolved pores and intergranular holes,while the porosity and permeability are positively correlated with sorting coefficient.
出处
《长江大学学报（自科版）（中旬）》
CAS
2015年第4期14-16,共3页
Journal of Yangtze University(Nature Science Edition)
关键词
合水
正宁地区
长72油层
储层
孔隙度
渗透率
Heshui-Zhengning Area
Chang 72 Reservoir
reservoir
porosity
permeability
