复合模型在凝析气藏试井解释中的应用

The Application of Compound Model to the Well Test Interpretation in Condensate Gas Reservoir.

凝析气藏在低于露点压力生产时 ,井筒附近出现两相流区 ,使得地层中析出的液体大大影响开发过程中的流动特性。应用多区复合试井模型 ,对某复杂凝析气藏中实际试井资料进行处理 ,提出了在凝析气藏试井中可以确定因凝析油反凝析引起的地层多相作用区 ,同时分析了试井过程中出现的曲线异常问题。

When the condensate gas pool is producing under the dew-point pressure, the flowing characteristics will be great affected by the fluid separated out from formations, owing to the two phrase flow exist near the well bore areas. In this paper, using the confound well test model in many areas. the true well test data is analyzed to some complicate condensate gas pool, consequently, the multiple phrase areas in formation where result from the retrograde condensation in condensate gas pool are confirmed, meanwhile, the course of abnormal phenomenon in well test curve are analyzed.