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多层油藏各层的流体流动受层间越流的影响,本文考虑在一个层间被半渗透夹层(其容积可以忽略)隔开的几层系统中微可压缩单相液体的流动。模型假定各层被单井打开并以固定总产量生产。模型方程组的数值解用于求得典型情形下的越流结构,推导出了各层的压力及 n—1个层间越流的分析表达式并将其与数值结果对比。分析解显示了越流如何依赖于层的性质及次序。
The fluid flow in the layers of a multi-layer reservoir is influenced by the more current flowing between the layers. In this paper, the flow of micro-compressible single-phase fluid in several layers separated by a semi-permeable interlayer (whose volume is negligible) is considered. The model assumes that the layers are opened by a single well and produced at a fixed total yield. The numerical solution of the model equations is used to derive the cross flow structure under typical conditions. The analytical expressions of pressure and n-1 overcurrent in each layer are deduced and compared with the numerical results. Analytical solutions show how the more the flow depends on the nature and order of the layers.