鄂尔多斯盆地临兴地区盒8段致密砂岩储层敏感性研究  

Sensitivity study of tight sandstone reservoir in He8 Member of Linxing area,Ordos Basin

作　　者：姜洋 马立涛 张波[1,2] 刘成 张瀚澎 柳雪青[1,2] 李洋冰 陈建奇 JIANG Yang;MA Litao;ZHANG Bo;LIU Cheng;ZHANG Hanpeng;LIU Xueqing;LI Yangbing;CHEN Jianqi(CNOOC EnerTech-Drilling&Production Co.,Tianjin 300452,China;CNOOC Energy Technology&Services Limited Key Laboratory for Exploration&Development of Unconventional Resources,Tianjin 300452,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452 [2]中海油能源发展股份有限公司非常规勘探开发重点实验室,天津300452

出　　处：《非常规油气》2024年第4期39-48,共10页Unconventional Oil & Gas

基　　金：中国海油石油集团公司项目“非常规油气勘探开发实验平台建设”(CNOOCKJ PT GCJS 2021-01)。

摘　　要：鄂尔多斯盆地临兴地区盒8段储层是气田增储上产的主力层系。为了更好的进行开发,加强气田储层保护,针对该储层总体敏感性与石盒子组存在差异的问题,以该层段作为研究对象,通过室内天然岩心的敏感性试验,结合扫描电镜、薄片鉴定和X衍射全岩/黏土分析,在利用压汞及常规物性等大量测试资料分析储层基本特征的基础上,研究了临兴地区盒8段的敏感性特征及控制因素。结果表明:目的层中黏土矿物主要以绿泥石为主,储层总体表现为特低孔超低渗特征;储层敏感性中的速敏、水敏、盐敏、碱敏和酸敏损害程度整体表现为弱中等偏弱。说明复杂的孔隙特征以及矿物成分中较高的石英、绿泥石和高岭石含量是造成储层敏感性损害的主要原因,研究结果可为目标区块的高效勘探开发提供参考。He8 Member in Linxing area of Ordos Basin is the main productive series for increasing reserves and production of the gas field.In order to better develop it and strengthen the protection of the gas field reservoir,in view of the difference between the overall sensitivity of this reservoir and Shihezi Formation,this section is taken as the research object,through the sensitivity test of indoor natural cores,combined with scanning electron microscope,thin section identification,X-ray diffraction whole rock/clay analysis Based on the analysis of the basic characteristics of the reservoir with a large number of test data such as mercury injection and conventional pHysical properties,the sensitivity characteristics and control factors of He8 Member in Linxing area are studied.The results show that the clay minerals in the target layer are mainly chlorite,and the reservoir is generally characterized by ultra-low porosity and ultra-low permeability;The damage degree of medium velocity sensitivity,water sensitivity,salt sensitivity,alkali sensitivity and acid sensitivity of reservoir is generally weak to medium weak.It shows that the complex pore characteristics and the high content of quartz,chlorite and kaolinite in the mineral composition are the main reasons for the damage of reservoir sensitivity.The research results can provide reference for the efficient exploration and development of the target block.

关 键 词：鄂尔多斯盆地 临兴地区 盒8段 敏感性 储层保护 

分 类 号：TE132[石油与天然气工程—油气勘探]