Mojtaba Zadnorouzi; Seyyed Ali Faal Rastegar; Atefeh Hasan-Zadeh
Abstract
When the oil well pressure diminishes, production in the stock tank will decrease. One of the best methods for enhancing the production rate is an artificial gas lift. Injecting gas ...
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When the oil well pressure diminishes, production in the stock tank will decrease. One of the best methods for enhancing the production rate is an artificial gas lift. Injecting gas reduces the density of the oil column, resulting in a bottom-hole pressure. As a result, the oil comes to the surface more easily, increasing production. Accordingly, in this paper, we designed an artificial gas lift for a well in one of the south Iranian oil fields in a new method. We also carefully examined the effective parameters of oil production rate, including gas injection rate, injection depth, tubing diameter, gas specific gravity and temperature and pressure of injected gas, and water cuts. Then, to optimize the process under study, we determined the best value for each of these parameters, while studies do not optimize all parameters. Injection gas rate and pressure had an optimum point; the tubing diameter at one point had the highest output. As the specific gravity of the injection gas increased, production generally decreased. As the temperature of the injection gas rose, diminished decreased slightly. To ensure the correctness of the work, the analysis of the necessary sensitivities about the optimal effect of each parameter has been done with sufficient accuracy. The results show that gas injection will lead to a 156.4% increase in production in the reservoir which is a remarkable and thought-provoking result.
