The Research of Dynamic Simulation of Gas-Lift Well Unloading Process Based on OLGA

TL;DRAbstract

Gas-lift unloading process is a transient process. Sufficiently considering the characteristics of the unloading transient process, this paper firstly built the new transient dynamic model of the gas-lift well unloading by using a commercial available dynamic multiphase flow simulator OLGA. In this new model, we designed four gas-lift valves and we used LEAK components with corresponding response curves which were obtained by the energy equation. And then the gas-lift unloading process was simulated by OLGA. Finally, the trend plots of the simulation results versus time were given and were analyzed in detail. The results showed that the gas-lift well reached the steady production after the gas-lift unloading process is finished. Based on the simulation results and the analysis, this paper showed that it is feasible to use OLGA modelling and simulating the gas-lift unloading process by using LEAK components with the corresponding GLV response curves. It also showed that we can use this

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