CAJ | 학술논문

基于基本物理原理建立了适用于多种流型的泡排井多相流机理模型。首先，基于Mitchell和Taitel的实验成果，将泡排井流型分为泡状流、段塞流、均质泡沫流和雾状流，建立了流型转换机理模型；随后，建立了各流型的压降计算方法，其中泡状流、段塞流采用漂移模型描述，将均质泡沫流视为幂律流体处理，而雾状流简化为无滑脱模型处理。和川南、鄂尔多斯39口包含多种流型的泡排井测压数据对比，模型的相对误差仅为-0.55%。敏感性分析表明，低气液比泡排井可能呈现泡状流或段塞流，适度注气可实现流型向泡沫流的转变，提高举升效率。
기우기본물리원리건립료괄용우다충류형적포배정다상류궤리모형。수선，기우Mitchell화Taitel적실험성과，장포배정류형분위포상류、단새류、균질포말류화무상류，건립료류형전환궤리모형；수후，건립료각류형적압강계산방법，기중포상류、단새류채용표이모형묘술，장균질포말류시위멱률류체처리，이무상류간화위무활탈모형처리。화천남、악이다사39구포함다충류형적포배정측압수거대비，모형적상대오차부위-0.55%。민감성분석표명，저기액비포배정가능정현포상류혹단새류，괄도주기가실현류형향포말류적전변，제고거승효솔。
Based on the basic physics principle,this paper presents a mechanism model for multiphase flow in gas wells using foam dewatering technology,which can be applied to various flow patterns. Firstly,based on the experiments of Mitchell and Taitel,the model considers four distinct flow patterns(bubble,slug,homogenous foam,and mist)and formulates the transition boundaries among them. Then individual models for four flow patterns are developed. Bubble flow and slug flow are described by the drift flow models. Homogenous foam flow is treated as power-law fluid. Mist flow is simplified as no-slip model. The evaluation results using pressure test data in 39 foam lift gas wells indicate that the unified model shows an average error of-0.55%. Sensitivity study shows that foam lift gas well may experience bubble flow or slug flow while the gas-liquid ratio is low. Appropriately supplying gas can move the flow into the homogenous foam flow,which can improve the lifting efficiency.