油藏多层合采动态特征分析  

Dynamic Characteristic Analysis of Commingling Reservoirs

作　　者：游媛[1] 段永刚[1] 方全堂[1] 张晗 

机构地区：[1]西南石油大学石油工程学院,四川成都610500 [2]中国石油工程设计有限公司西南分公司,四川成都610000

出　　处：《石油天然气学报》2013年第1期121-125,177,共5页Journal of Oil and Gas Technology

摘　　要：针对目前单井多层合采动态分析未充分考虑单层参数影响的情况,以单井为研究对象,在分析多层油藏渗流机理的基础上,建立了多层油藏渗流数学模型;基于半解析求解方法,绘制了多层合采井井底压力动态响应曲线和分层流量曲线;进一步开展了地层系数比β、储容能力比ω和表皮因数S的敏感性分析。研究表明多层合采过程中,地层系数比β是影响层间采出程度均匀性的主要因素。For dynamic analysis of multi-layer commingling production not fully considering the influence of single-layer parameters,single well was used as the study object,based on the analysis of multi-layer reservoir seepage mechanism,a multi-layer reservoir seepage mathematical model was established.To solve the mathematical model through semi-analytic method,bottom hole pressure response curves and the layered production curves of commingling well were plotted.On this basis,analyzed the influence of formation coefficient ratio β,storage capacity ratio ω and skin factor S on the bottom hole pressure dynamics and layered production of multi-layer reservoir were analyzed.The result shows formation coefficient ratio is the main factor to affect the homogeneity of inter-layer recovery percent.

关 键 词：多层合采 井底压力 分层流量 地层系数 储容能力 表皮因数 

分 类 号：TE331.2[石油与天然气工程—油气田开发工程]