Modelado, simulación y control de un separador trifásico de petróleo como herramienta didáctica para ingeniería de petróleos

Abstract

The aim of this work was to develop the modeling, simulation, and control of a Three-Phase Separator (TPS) for oil, as a didactic tool for Petroleum Engineering. First, the parameters that govern the process were determined, such as equipment structural data, operating conditions, water properties, oil, gas, and input flows. Once the necessary parameters are established, the mathematical model based on differential equations is carried out. To conduct the simulation, Matlab software was used, where a functional programming was applied. To control the system, it was necessary to use Simulink applying Matlab Function block which facilitated the process of importing the model developed in Matlab, this tool facilitated the control of fluids level and gas pressure by using controllers such as Proportional-Integral-Derivative (PID) and Proportional. With the App Designer tool, the TPS application was created which allows the user to interact with the equipment simulation. The application is installed on the computer with simple steps detailed in a user manual. The oil and gas input flows are established by flash calculations which are validated using Wilson thermodynamic package of Dwsim process simulator. Seven graphs were obtained where fluids level; Control valves opening of gas pressure, water, oil, and gas; As well as volumes of the equipment chambers and the flow rates of the liquids and gas are shown. It is concluded that the Matlab software tools allowed to develop the modeling, simulation, and control of the three-phase separator of oil and, at the same time allowed to create an application for interaction with the user. It is recommended to simulate the process from the steady-state conditions to analyze the changes that could be made in the study variables such as level and pressure.