基于原油性质和储层品质的产能预测方法——以玛湖凹陷玛2井区下乌尔禾组油藏为例  

Productivity Prediction Method Based on Crude Oil Property and Reservoir Quality——A Case Study of Lower Urho Reservoir in Ma 2 Well Area of Mahu Depression

作　　者：王士新 刘厚武 赵德丽 WANG Shixin;LIU Houwu;ZHAO Deli(CNOOC Energy Development Co.,Ltd.,Tianjin 300459,China;CPL International Company,Beijing 102206,China)

机构地区：[1]中海油能源发展股份有限公司,天津300459 [2]中国石油测井公司国际公司,北京102206

出　　处：《重庆科技学院学报(自然科学版)》2023年第6期23-27,共5页Journal of Chongqing University of Science and Technology:Natural Sciences Edition

摘　　要：玛湖凹陷玛2井区下乌尔禾组油藏不同油井间的原油产能差异较大。为准确预测该井区产能,基于下乌尔禾组油藏原油性质及储层分类的影响建立产能预测图版,对该组产能进行预测分析。根据原油密度和黏度将研究区原油划分为3类,一类原油品质最好,二类原油品质居中,三类原油品质最差,不同类型的原油可通过电阻率曲线进行有效识别。根据储层物性特征、孔隙结构、沉积特征将储层划分为3类:一、二类储层以牵引流沉积为主,二者之间的差别主要是储层厚度;三类储层以重力流沉积为主,储层物性和厚度均较差。基于原油和储层类型建立模型用于产能预测,结果显示一类原油与一类储层相匹配时产能最佳。Well productivity varies in different wells of lower Urho reservoir in Ma 2 well block of Mahu Depression.Based on the influence of crude oil properties and reservoir types of Lower Urho formation,a productivity prediction chart is established in order to accurately predict the productivity of this well area.According to the density and viscosity of crude oil,the crude oil in the study area is divided into three types:type Ⅰ is low viscosity and low density crude oil,type Ⅱ is medium quality crude oil,and type Ⅲ is high viscosity and high density crude oil.Different types of crude oil can be effectively identified by resistivity curves.According to the reservoir physical characteristics,pore structure and sedimentary characteristics,the reservoirs are divided into three types:the first and second type of reservoirs that are different in the reservoir thickness are mainly traction current deposits while the third type of reservoirs whose physical properties and thickness are poor are dominated by gravity flow deposition.Based on the crude oil and reservoir types,a model is established to predict the productivity.The results show that productivity is best when type Ⅰ of crude oil matches the first type of reservoir.

关 键 词：玛2井 原油分类 敏感曲线 储层分类 产能预测 

分 类 号：P618[天文地球—矿床学]