摘要
运用多种技术手段,从基质孔隙和裂缝两方面分析了新沟油田泥质白云岩类储层的储集空间类型。结果表明:新沟嘴组下段Ⅱ油组泥质白云岩类储层岩性复杂,主要发育白云岩、泥质粉砂岩、硬石膏岩、泥岩以及少量岩屑砂岩等,白云岩多具泥晶结构;泥晶白云岩储集空间以白云石晶间孔为主,粉砂岩储集空间以粒间孔为主,具中、高孔-特低渗特征。其含油量与孔隙度表现出线性增加和高值稳定的两段式特征,以10%为界,孔隙度高于10%的储层含油量较高,适合进行压裂。
By using variety of technical means,the space type of argillaceous dolomite reservoir in Xingou Oilfield was analyzed from the aspects of matrix pores and fractures.The result indicated the lithology of the dolomite reservoir in 2nd oil formation of Xingouzui Formation was complex,in which dolomite,pelitic siltstone,anhydrock,mudstone and a small quantity of litharenite was mainly developed,and most of the dolomite had micritic structures.The reservoir space of micritic dolomite was mainly filled with intercrystalline pores,and the siltstone reservoir space was dominated by intergranular pores,which possessed the characteristics of medium to high porosity and extra-low permeability.The oil content and porosity present two-stage characteristics of linear increase and high value stability.The reservoir with porosity higher than 10 percent,its oil content is higher,and it's suitable for fracturing.
出处
《长江大学学报（自科版）（中旬）》
2016年第3期11-14,69,共5页
Journal of Yangtze University(Nature Science Edition)
基金
国家自然科学基金项目(41503034)
油气资源与探测国家实验室开放课题基金项目(PRP/Open-1509)
中国石油化工股份有限公司项目(P11070)
关键词
泥质白云岩
储集空间
新沟油田
含油性
压裂
argillaceous dolomite
reservoir space
Xingou Oilfield
oil-bearing property
fracturing
