نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکترای مهندسی نفت، دانشکئه مهندسی نفت، دانشگاه صنعتی امیرکبیر
2 دانشگاه صنعتی امیرکبیر
3 استادیار دانشکده مهندسی نفت دانشگاه صنعتی امیر کبیر
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Constraint optimization is one of the best ways to increase production from hydrocarbon reservoirs. A novel method for optimizing integrated production systems is presented in this research. The sub-models of the integrated model are the reservoir, well, surface choke, pipeline, and separator. The effect of flow regimes at separator inlet and operating conditions of the surface separators on the efficiency of separator performance and oil production systems is not negligible. The integrated modeling method presented in this study is new. The model includes separator pressure control, and the target function is maximizing oil in the stock tank. The constraint for optimization is that no slug flow has formed at the separator inlet. In this optimization model, the bottom-hole pressure is guessed for each time step. The guessed bottom-hole pressure is corrected by comparing the separator pressure and the optimum separator pressure. The optimization algorithm uses two optimization loops. The internal optimization loop is from the surface choke to the stock tank, and the external optimization loop is from the bottom of the well to the stock tank. The optimization model has the perfect functionality to optimize integrated production systems in steady-state, transient, and pseudo-steady-state reservoirs. The optimization model can perform excellently in modes where the choke switches from critical to sub-critical or vice versa. The root means squared error between obtained separator pressures and the optimum separator pressures at unsteady-state reservoir conditions for the integrated model was equal to 2.21. The RMSE between obtained separator pressures and the optimum separator pressures at pseudo-steady-state reservoir conditions for the integrated model was equivalent to 0.2. Cumulative oil in the stock tank for the integrated model without slug control was more than for the integrated model with slug control and Olga software and slug flow did not form in the separator inlet.
کلیدواژه‌ها [English]
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