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由于沉积的原因 ,很多油气藏都由多层构成。这类油气藏可分为两种类型 ,一种是各层之间被不渗透的隔层分割开来 ,没有层间越流存在 ;另一种是层间有连通现象 ,具有层间越流。文章在前人工作的基础上 ,特别是研究有关分层油藏半透壁模型及其在试井中的各项应用成果的基础之上 ,建立了多层气藏的半透壁模型及其微分方程组 ,并且对部分打开气层进行合采的试井过程 ,利用有限差分方法编制了模拟试井程序。通过对模拟计算结果的分析 ,阐明了井底压力曲线的特点 ,并说明了气藏层间越流的特点及性状。
Due to sedimentation, many reservoirs consist of multiple layers. This kind of oil and gas reservoirs can be divided into two types. One is that the layers are separated by impermeable partitions, and the more layers there are no more layers. The other is that there is connectivity between layers, . Based on the previous work, and especially on the research on the translucent model of stratified reservoir and its application in well testing, a semi-transmural model of multi-layer gas reservoir and its differential Equations, and part of the open gas-bearing joint well test process, the use of finite difference method developed simulation test well program. Through the analysis of the simulation results, the characteristics of the bottom hole pressure curve are clarified, and the characteristics and characteristics of the over-flow between gas reservoirs are also illustrated.