SAGD开发效果影响因素研究

摘要

In this paper,simulation method has been used to analyze the effect of geological factors, well comple-tion method and operation strategy on SAGD, including the location and value of low permeability zone, string structure,start-up method,inject-production parameters.Then orthogonal design method has been used to de-fine the main controlling factors on SAGD.The results show that,string structure is the main influencing factor on SAGD.The order of influencing factors is string structure, pre -heated time, permeability of low permeability zone,start-up method,maximum liquid producing rate,permeability distribution,maximum steam injecting rate.%借助数值模拟手段,从地质因素、完井方式和操作策略出发,分析了低渗带位置、低渗带渗透率、管柱结构、预热方式、注采参数等因素对SAGD开发效果的影响;其次通过正交设计方法,确定了影响SAGD开发效果的主控因素.结果表明,管柱结构对开发效果影响最大,影响程度由大到小的因素依次为管柱结构、预热时间、低渗带渗透率大小、预热方式、SAGD阶段最大排液量、低渗带位置、SAGD阶段最大注汽量.