高气液比气井临界携液气流量计算新模型

基于气井井筒积液对气藏开发的危害性，在现有携液模型的基拙上，利用受力平衡理论和能量守恒原理，建立了气井临界携液气流量计算新模型;通过引入新模型系数，对液滴大小及液滴变形特征进行了综合表征。模型计算结果表明，新模型系数随压力增大而增大，有效地弥补了现有携液模型存在的不足。现有携液模型及新模型的适应性分析结果表明，新模型在高、低压气井中均具有良好的适用性。现场应用新模型有效预侧了大牛地气田气井的积液状态，为产水气藏的有效开发提供了有力的技术支持

New model to calculate critical liquid-carrying gas flow rate in gas well with high gas-liquid ratio

As liquid loading in gas well will bring serious damage to the development of gas rese,＇voir, a new model to predict the critical liquid-carrying gas flow rate has heen established with liquid-droplet force equilibrium theory and energy conservation principle based on the currently used liquid-carrying mode｜s. The new coefficient is introduced into the model to comprehensively characterize the droplet size and deformation characteristics. The calculation results of the model show that the new model coefficient, hecomes larger with the increase of pressure, which compensates the defects of the currently used liquid-carrying models. Adaptability analysis results of the new model and the currently used models show that the new model has high accuracy in both low and high pressure gas wells. The new model is applied to effectively predict effusion status in Daniudi Gas Field. It provides a strong technical support for the effective development of water-produced gas reservoir.