本文介绍了一种描述气井积液过程的改进模型。此模型是在Dousi模型的基础上建立的。Dousi模型采用简单的方法描述流体从气藏流入井筒及回注入气藏的过程。新模型在此方面做了改进,并对生产和注入层段提出了一些更加实际和细致的假设条件,可以帮助我们更深入地了解井底积液过程。同时还可以从更接近现实的角度预测气井的未来动态。Dousi模型中定义了两个典型流速,一个是按最大产能生产并把积液全部采出时的流速,另一个是积液回注到地层时的亚稳态流速。现场实践告诉我们,这两种流速在很多气井中普遍存在。新模型和Dousi模型的区别在于,当气井发生积液时,新模型中积液流速的变化要比Dousi模型的快得多,而这种变化过程可以更真实地反映实际的流入动态。应用新模型,我们可以更清楚地认识井筒的积液过程并对其进行预测。这不但有助于对井的动态进行优化分析,而且还对井和气藏的经济评价有重要意义。 This article presents an improved model for describing gas well effusion. This model is based on the Dousi model. The Dousi model uses a simple method to describe the flow of fluids from the gas reservoir into the wellbore and into the gas reservoir. The new model has been improved in this respect, and put forward some more practical and detailed assumptions about the production and injection layers, which can help us to understand the process of bottom hole fluid accumulation. At the same time, the future of gas wells can also be predicted from a more realistic perspective. Two typical flow rates are defined in the Dousi model. One is the flow rate at maximum throughput and full recovery of effluent, and the other is the metastable flow rate at which the effluent is injected back into the formation. Field practice tells us that these two velocities are ubiquitous in many gas wells. The difference between the new model and the Dousi model is that when the gas well is fluidized, the change in fluid velocity in the new model is much faster than in the Dousi model, and this change can more accurately reflect the actual influx. With the new model, we can better understand and predict the wellbore fluid accumulation. This not only helps to optimize the well dynamic analysis, but also has important significance for the economic evaluation of wells and gas reservoirs.