摘要
应用岩心、薄片、扫描电镜和生产数据等资料,对盐家油田永921块沙四上亚段储层特征及控制因素进行分析。结果表明:沙四上亚段主要为砂砾岩体储层,孔隙类型以次生孔隙为主,属于低孔低渗储层,共划分为5类砂砾岩储层,它们在纵、横向上分布差异较大。储集性能受沉积、岩性和成岩作用的控制,沉积作用和岩性特征是影响储层的决定性因素,压实和胶结作用导致该区储层物性变差,溶蚀作用对储层有明显改善作用。
By use of data and information of core,thin section,SEM and production,the characteristics and controlling factors of the upper sub- member of Shu 4 glatenite reservoir in Block Yong-921,Yanjia oilfield are analyzed.It is indicated from the results that the upper sub- member of Sha 4 formation is mainly a glulenite reservoir.With secondary pores predominated,it is a low porosity low permeabilily reservoir,which can he divided into 5 types,greally different in areal and vertical distribution.The reservoir property is controlled! by deposition,lithology and diugenesis.Deposition and lithologic feature are the deterministic- factors affecting upon reservoir,compaction and cementation led to worsening of reservoir physical property in the area,and dissolution had obviously enhanced the reservoir quality.
出处
《特种油气藏》
CAS
CSCD
北大核心
2014年第1期31-34,152,共4页
Special Oil & Gas Reservoirs
基金
国家自然科学基金"陆相湖盆斜坡带顺坡流与沿坡流相互作用机理及沉积构型响应"(41072084)
关键词
砂砾岩
储层特征
主控因素
沙四上亚段
盐家油田
glutenite
reservoir characteritics
main controlling factor
upper sub-member of Sha 4 formation
Yanjia oilfield
