Gas injection is a very popular artificial lift method, at presentrna very high percentage of wells produce under thisrnmechanism, hence it is very important to understand allrnoperational and practical effects that are associated when anrnoil well is producing under gas-lift. Its optimization is criticalrnto maximize oil production using the optimum amount of gasrnrequired and to justify the use of this technology as nowadaysrnother artificial lift methods are very efficient too. Although,rncommercial softwares can simulate a gas-lifted well, all ofrnthem consider steady-state conditions, however the injectionrnof gas through orifices or valves is a totally dynamicrnsituation1.rnThis paper shows some real examples where the use of arndynamic simulator was necessary to understand both wellrnbehavior and model simulation specifically when trying tornoptimize wells producing under unstable conditions.rnThe generation of realistic performance curves under thoserncircumstances becomes critical, as they are the bases of anyrngas-lift optimization project as shown in this paper.
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