Dynamic Modelling and Simulation of a Three-Phase Gravity Separator

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This Scientific Paper gives a complete mathematical analysis, modelling, and simulation of a crude oil separation process.

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Abstract: Many studies have investigated the crude oil separation process's separation mechanisms, size, and design,
employing horizontal 3-Phase Gravity Separators in depth. There are, however, very few articles on their dynamics, modelling,
simulation, and control. Understanding its dynamic behaviour will aid in designing and tuning the device that can manage
water level, oil level, and gas pressure in response to feeding variations. This Scientific Paper gives a complete mathematical
analysis, modelling, and simulation of a crude oil separation process using a horizontal 3-Phase Gravity Separator using
Mathworks Matlab R2016b-x64 and Aspen Hysys V10. Bishoy's Equations, which were constructed, will assist in operating
this gadget, locating various variables, and observing the effect of modifying variables on the system's variables. The rationale
for this study was developed in response to the small number of articles discovered, which may be a covert issue held up by
large oil companies, as well as the complicated equations related to this process that remain unsolved, and to monitor what is
happening in this complex dynamic process. This paper provides everything related to a three-phase gravity separator,
including changing of variables and observing the effect on the system when those variables were modified. The equations
determined the following variables: The height of gas, water, oil, the height of oil when it jumped the weir, the pressure of the
gas (in and out), water pressure (in and out), oil pressure (in and out), and the effect of increasing α (control valve's stem
position) and decreasing Q (inlet volumetric flowrate) on these variables have all been studied. This article discovered that
increasing the control valve stem position and decreasing the inflow volumetric flowrate of both oil and water was highly
unsafe and caused significant variations in the system's heights and pressures using Matlab. The Aspen Hysys analysis
optimally separates the oil, gas, and water to determine material, energy streams properties, and compositions. As a result, this
complex dynamic behaviour was observed, and no additional articles were discovered that addressed this subject. This process
monitoring will determine the best conditions for flawless separation, with the selectivity of the desired product or products as
the primary goal. This research can revolutionize the way people think about oil and gas extraction and processing and benefit
colossal oil and gas firms in Europe, Asia, and Africa.

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