低产低压气井井底积液诊断及预测

Diagnosis and Prediction on Downhole Effusion in Low Production and Pressure Gas Well

气井开采过程中,井底积液降低了气井的产量,影响气田的采收率。从井筒积液的机理出发,总结了几种用于气井积液诊断的方法。对于低产低压气井选择李闵模型计算临界携液流速及流量更加合理。通过对气井积液情况定性、定量的分析,实现井底积液的有效诊断和预测,为气井的排水采气提供参考,确保气井的稳定生产。

In gas well drilling process,the hole liquid effusion reduces the production of gas wells,affect the recovery of gas field. In this paper,based on the mechanism of wellbore effusion,several methods for gas effusion diagnosis are summarized.For low production and low pressure gas well,it is more reasonable to choose Limin model to calculate the critical carrying fluid flow velocity and flow. Through the qualitative analysis and quantitative analysis of gas effusion,effective diagnosis and prediction of downhole liquid are realized,thus a reference for drainage gas recovery of gas well is provided,and the steady production of gas well is ensured.