复合气藏内凝析油气流动问题的新模型及应用

A new model for flow of condensate oil gas in complex gas reservoirs and its appligation

建立了凝析油 -气在多孔介质中的渗流方程 ,针对形成不同流体区域的凝析气藏 ,有边水的凝析气藏、岩性尖凝析气藏及井底存在污染和改善等多种情况 ,建立复合气藏内的凝析油气渗流新模型 ,求出了凝析气藏油 -气拟压力分布的解析解 ,并指出了凝析气田开发中的实际应用价值。

The governing equation for teh seepage flow of condensate oil-gas in porous medium were established. From the analysis of the formation of condensate gas in different fluid domains, the condongate gas kservoir with edged umter, the lithology, pinch coudensate gas reservoir and the existence of pallution and its improvement at the lothom of gas condensate wall, a new model was resulted for coudensate oil-gas in complex gas resroirs and He analytedical solutions for the psendo-pressure distribution of oil-gas in condinsate gas kservoirs were obtained. The possible application of the presented results in the development of condensate gas fields was pointed out.