文档介绍：油气藏评价与开发第 4 卷第 1 期 2014 年 2 月 RESERVOIR EVALUATION AND DEVELOPMENT 鄂尔多斯盆地下寺湾油田长 2 段砂岩储层特征研究俞亮亮( 中国石化华东分公司石油工程技术研究院, 江苏南京 210031 ) 摘要:以现代油藏描述的理论为指导,运用石油地质学、沉积学、储层地质学等理论与技术方法,对鄂尔多斯盆地下寺湾油田长 2段储层特征进行研究。研究表明研究区长 2储层碎屑成分以长石岩屑砂岩为主,含少量岩屑石英砂岩,结构成熟度中等。孔隙类型以粒间溶孔为主,粒内溶孔和粒间孔少量。储层物性实测数据表明, 长 2小层孔隙度多分布在 5 % ~ 18 % , 渗透率分布范围为( 0 . 01 ~ 4 ) × 10 μ m , 砂岩储层多为低孔特低渗储层。关键词: 储层特征; 长 2 段地层; 下寺湾油田; 鄂尔多斯盆地中图分类号: TE 122 . 2 文献标识码: A Study on reservoir characteristics of Chang- 2formation in Xiasiwan oilfield, Ordos basin Yu Liangliang (Research Insititute of Petroluem Engineering Technology, East pany, SINOPEC, Nanjing, Jiangsu 210031 , China) Abstract: Guided by modern reservoir description theories and using theory and technical methods of the petroleum geology, sedi ? mentology, reservoir geology, reservoir characteristics of Chang- 2reservoir of Yanchang formation in Xiasiwan oilfield, Ordos ba ? sin were studied. The research results indicate that, in the study area, the clastic constituents are mainly the feldspathic litharenite with a little quartzitic litharenite of medium textural maturity. The pore types are mainly intergranular dissolved pore with a little in ? tragranular dissolve pore and intergranular pore. Reservoir properties measured data show that the porosity of Chang- 2 formation is 5 % ~ 18 % and the permeability of that is ( 0 . 01 ~ 4)× 10 μ m. The sandstone reservoirs are mainly