Development of a control strategy for a self-stop valve in production wells
DOI:
https://doi.org/10.24054/rcta.v2i48.4630Keywords:
event-based control, operational resilience, choke valves, automation, industrial automation, PLC control, SCADA systems, oil production systems, adaptive recoveryAbstract
One of the primary challenges in automated oil wells is maintaining operational continuity during abrupt pressure fluctuations that cause unscheduled shutdowns. Traditional continuous PID control schemes fall short when process dynamics become highly variable, while advanced alternatives like Managed Pressure Drilling (MPD) remain expensive and complex to implement. This paper presents an event-based alternative using operational severity levels to control choke valves. The architecture combines PLC control, SCADA supervision, alarm escalation, and a progressive reopening strategy to manage critical events autonomously. During field testing, the system recorded 62 automatic interventions without plant shutdowns, achieving response times under 3 seconds and recovery rates above 90% during transient events. This shows that it is possible to stabilize the process and reduce operator dependence, but not eliminate it from the operation, through a practical solution that's easy to integrate into existing plants.
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