作　　者： ; ; ;

机构地区： 西南石油大学

出　　处： 《天然气勘探与开发》 2009年第4期40-43,共4页

摘　　要： 针对致密低渗气藏不稳定流动期较长的问题,提出基于不稳定流动理论的渗流模型描述气井的地层流动,并结合Duhamel原理求解变流量问题,建立了基于生产过程模拟的动态分析方法,可直接利用井口压力和产量进行单井动态分析。针对压力动态拟合中的参数多解性问题,引入Blasingame分析曲线,展现不稳定流动和拟稳态流动特征,提高了参数估算的可靠性。 In this paper,a percolation model based on unsteady flow theory is presented to describe gas reservoir flow so as to solve longer period unsteady flow in tight gas reservoir. Integrated with the model and Duhamel theory,a dynamic analysis method based on production simulation may be established to analyze individual-well dynamics by both wellhead pressure and gas production. In addition,Blasingame analysis curve is introduced to solve a problem of parameter multiple solution existing in pressure dynamic matching. The curve can not only represent some characteristics of both unsteady and pseudo-steady flow but also increase a reliability of parameter estimation.

关 键 词： 低渗气藏 不稳定渗流 动态分析 生产动态模拟 分析曲线

领　　域： [石油与天然气工程] [理学] [理学]