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A Method for Controlling the Process of Dynamic Settling of Oil Emulsion and A Device for Its Implementation

The paper describes a method for controlling the process of dynamic settling of oil emulsion (OE). The method involves measuring the flow rate of oil emulsion at the inlet of the settler, the optical density of the fluid layer along the height of the settler, the water level pressure at three points of the height of the settler. The measured values are used to determine the asphaltene content in the fluid layer along the height of the settler and the level of the water cushion (WC) in the settler. The values of these quantities are compared with their nominal ones ​​and when the WC level deviates upwards, the flow rate of drainage water discharged from the settler is increased, and vice versa, and if the asphaltene content deviates upward, the oscillation frequency or redistribution of the initial OE flow among parallel-working settlers is increased. When determining the asphaltene content in the fluid layer, the height of the settler is taken into account. When changing the oscillation frequency is inefficient, if the asphaltene content in the fluid layer increases, the dosage of the demulsifier is increased and vice versa.