粘性指进现象，普遍存在于油气开采的众多驱替过程中，是多相渗流的重要特征之一。
Viscous fingering is one of the vital features of multiphase seepage, which widely exists in various displacements of petroleum and natural gas production process.
目前，试井分析方法仅限于地层中的单相流动，而在油气田开发中后期，试井往往涉及地层中的多相渗流。
The present well test analysis methods are only suitable to single-phase flow in reservoir. In fact, multi-phase flow will occur after a certain long time reservoir fluid production.
以油气层渗流及多相流理论为基础，将地层渗流与井筒复杂多以动结合考虑，建立了一套动态理论模型，并采用数值方法和技术进行了求解和计算分析。
Based on the theories of formation percolation and multiphase transient flow, a system of dynamic models which couples the multiphase flow in wellbore with the formation percolation is developed.
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