Research on Downhole Throttling Characteristics of Gas Wells Based on Multi-Field and Multi-Phase

The formation of natural gas hydrates seriously affects the production efficiency wells. Obtaining correct temperature and pressure profile along wellbore wells is a prerequisite for accurately predicting location hydrate using downhole throttling technology. According to numerical iterative transfer law microelement state parameters, multi-field multi-phase coupling method proposed. Based on analysis typical models, considering well velocity field density field, correction coefficient introduced. judgment flow pattern, friction gradient equation obtained, respective theoretical prediction equations are created field. Thereby, model with established. was applied K1 K2 wells, calculation results research were compared PIPESIM simulation measured values. At same time, mean μ, variance σ, variation Cm evaluated, show that this less than 15%, which indicates greater accuracy results. These findings provide basis design structures use tools.