Method and system for controlling slugging in a fluid processing system
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United States of America Patent
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Jul 17, 2018
Grant Date -
Jun 21, 2018
app pub date -
Dec 21, 2016
filing date -
Dec 21, 2016
priority date (Note) -
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Abstract
A method and system are provided for reducing the volume and/or frequency of slugging in a fluid processing system that includes a pipeline for conveying produced fluids and a vessel for receiving the produced fluids from the pipeline. A control valve is provided in the pipeline upstream of the vessel. A pressure sensor and/or a level sensor is coupled to the vessel. Pressure information from the pressure sensor and/or level information from the level sensor is sent to at least one master control loop in a cascade control scheme. The master control loop output determines a set point of a slave control loop coupled to the control valve to achieve a pressure setpoint or a level setpoint. The slave control loop, also referred to as a pseudo-flow controller, determines whether the control valve opening needs be modulated to achieve the setpoint of the slave control loop. A method is also provided for retrofitting an existing fluid processing system.
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