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TECHNICAL PAPERS

Slug Detection as a Tool for Predictive Control of GLCC© Compact Separators

[+] Author and Article Information
Shankar Earni, Shoubo Wang, Ram S. Mohan, Ovadia Shoham

Mechanical and Petroleum Engineering Departments, The University of Tulsa, Tulsa, OK 74104

Jack D. Marrelli

ChevronTexaco, E&P Technology Division, Humble, TX 77338

J. Energy Resour. Technol 125(2), 145-153 (Jun 04, 2003) (9 pages) doi:10.1115/1.1521711 History: Received March 01, 2001; Revised July 01, 2002; Online June 04, 2003
Copyright © 2003 by ASME
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References

Figures

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Schematic of GLCC control systems
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Integrated feed forward and feedback level control loop
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Closed loop magnitude plot for different compensator zero locations
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Liquid level control simulator (Matlab-Simulink) with both feedback and feedforward control loops
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Liquid level/liquid inflow-outflow response for a unit slug input (Vs=11 ft/s, L=22 ft) P=0.08, D=0.03
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Schematic of the slug detection zone with two conductances probes (C1, C2)
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a-System response for feedback control system (Vsg=3.84 ft/s, Vsl=0.38 ft/s, slug length=12 ft) b-System response for the integrated feed forward and feedback control systems (Vsg=3.84 ft/s, Vsl=0.38 ft/s, slug length=12 ft)
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a-System response for feedback control system (Vsg=6.61 ft/s, Vsl=0.41 ft/s, slug length=25 ft) b-System response for integrated feed forward and feedback control system (Vsg=6.61 ft/s, Vsl=0.41 ft/s, slug length=25 ft)

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