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在气藏开发中,井底的液量若不能及时排出,就会在井底聚集,将会形成积液,严重时造成水淹停产,因此,预测气井积液是比较重要的部分。现场应用时除选择预测模型外,更重要的是确定井筒中最大临界流量出现的位置。在建立合适的模型的基础上,研究分析了温度和压力对气井临界携液流量的影响规律,同时,通过实例研究了临界流量和临界流速沿井筒的动态分布。研究结论表明,温度和压力对气井临界流量的影响是相反的;临界流量沿井筒的动态分布受到产液量大小的影响,产液量较大的气井最大临界流量易出现在井底,而产液量较小的气井最大临界流量易出现在井口。
In the development of gas reservoirs, if the liquid in the bottom of the well is not discharged in time, it will accumulate in the bottom of the well, which will form the effusion, which will cause flooding and stoppage in serious cases. Therefore, predicting gas well effusion is a more important part. In addition to selecting a predictive model for field applications, it is even more important to determine the location of the maximum critical flow in the wellbore. On the basis of establishing an appropriate model, the influence laws of temperature and pressure on the critical liquid-carrying flow in a gas well are studied and studied. Meanwhile, the dynamic distribution of the critical flow rate and the critical flow rate along the wellbore is studied through examples. The results show that temperature and pressure have the opposite effect on the critical flow of the gas well. The dynamic distribution of the critical flow along the wellbore is influenced by the amount of liquid produced. The maximum critical flow rate of the gas well with large liquid production volume tends to occur at the bottom of the well. The maximum critical flow rate of gas wells with small volume tends to appear at the wellhead.