鄂尔多斯盆地中部Z井区长4+5储层敏感性分析  

Sensitivity Analysis of Chang 4+5 Reservoir in Z Well Area,Central Ordos Basin

作　　者：陈兵兵 武富礼 袁珍 李爱荣 CHEN Bingbing;WU Fuli;YUAN Zhen;LI Airong(School of Earth Sciences and Engineering,Xi′an Shiyou University,Xi′an 710065,China;Shaanxi Key Laboratory of Petroleum Accumulation Geology,Xi′an 710065,China)

机构地区：[1]西安石油大学地球科学与工程学院,西安710065 [2]陕西省油气成藏地质学重点实验室,西安710065

出　　处：《重庆科技学院学报（自然科学版）》2022年第5期32-36,共5页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家科技重大专项“塔里木深层—超深层白云岩成岩作用与储层表征”(2017ZX05005-002-004)。

摘　　要：鄂尔多斯盆地中部Z井区长4+5储层为潜在的资源勘探区。通过孔隙结构分析、铸体薄片鉴定、X-全岩衍射、岩心敏感性实验数据分析,对该储层的敏感性作了研究。实验结果表明:长4+5储层属于低孔、特低渗储层,以长石砂岩为主,另有少量的岩屑长石砂岩;其孔隙类型主要为粒间孔和粒间溶孔;储层的敏感性表现为中等偏弱—中等偏强速敏性、中等偏弱—中等偏强水敏性、中等偏弱—中等偏强盐敏性、弱—中等偏弱酸敏性、中等偏弱—中等偏强碱敏性。Chang 4+5 reservoir in Z well area in central Ordos Basin is a potential resource exploration area.The sensitivity of Chang 4+5 reservoir in well Z in the study area is evaluated by pore structure analysis,casting thin section identification,X-whole rock diffraction and core sensitivity experimental data analysis.The experimental results show that Chang 4+5 reservoir belongs to low porosity and ultra-low permeability reservoir,mainly composed of arkose,with a small amount of lithic arkose.Its pore types are mainly intergranular pores and intergranular dissolved pores.The reservoir sensitivity is shown as medium weak-medium strong velocity sensitivity,medium weak-medium strong water sensitivity,medium weak-medium strong salt sensitivity,weak-medium weak acid sensitivity,medium weak-medium strong alkali sensitivity.

关 键 词：鄂尔多斯盆地 储层敏感性 储层特征 储层损害 

分 类 号：P618[天文地球—矿床学]