高尚堡油田致密砂岩储层敏感性评价  

Sensitivity evaluation of tight sandstone reservoirs in Gaoshangpu oilfield

作　　者：杨竞旭[1] 陈少勇 丛彭 张译文 卢家亭[1] YANG Jingxu;CHEN Shaoyong;CONG Peng;ZHANG Yiwen;LU Jiating(Exploration&Development Research Institute of Jidong Oilfield Company,PetroChina,Tangshan,Hebei 063004,China;Project Department of Jidong Oilfield Company,PetroChina,Tangshan,Hebei 063004,China)

机构地区：[1]中国石油冀东油田分公司勘探开发研究院,河北唐山063004 [2]中国石油冀东油田分公司项目部,河北唐山063004

出　　处：《石油地质与工程》2021年第1期66-71,共6页Petroleum Geology and Engineering

基　　金：“十三五”国家重大科技专项课题“南堡凹陷油气富集规律与增储领域”(2016ZX05006–006)。

摘　　要：在高尚堡油田沙三2+3亚段Ⅴ油组致密砂岩油藏储层特征研究的基础上,结合储层敏感性流动实验分析,探讨了致密砂岩储层敏感性和敏感成因。结果表明,储层具有中等偏强盐敏–强盐敏、中等偏弱–中等偏强速敏、中等偏弱–中等偏强水敏、中等偏弱–中等偏强碱敏、弱–中等偏弱酸敏的特征;研究区优势储层以水下分流河道和河口坝砂体为主,储层的泥质含量高、层内非均值性强、渗透率低、孔隙结构复杂是造成储层敏感性强的主要原因;伊/蒙混层和高岭石的相对体积分数较高,进一步加强了储层的盐敏性、水敏性和速敏性。Based on the study of reservoir characteristics of tight sandstone reservoir of Es32+3Ⅴoil formation in Gaoshangpu oilfield,combined with the experimental analysis of reservoir sensitivity flow,the sensitivity and sensitivity genesis of tight sandstone reservoirs are discussed.The results show that the tight reservoirs in the study area are characterized by moderate-plus to strong salt sensitivity,moderate-minus to moderateplus velocity sensitivity,moderate-minus to moderate-plus water sensitivity,moderate-minus to moderateplus alkali sensitivity,and weak to moderate-minus acid sensitivity.The dominant reservoirs in the study area are mainly underwater distributary channel and mouth bar sand bodies.The high shale content,strong heterogeneity,low permeability and complex pore structure are the main reasons for the strong reservoir sensitivity.The relative volume fraction of illite/montmorillonite and kaolinite is higher,which further enhances the salt sensitivity,water sensitivity and velocity sensitivity of the reservoir.

关 键 词：高尚堡油田 致密砂岩储层 储层特征 敏感性 

分 类 号：TE312[石油与天然气工程—油气田开发工程]