The Proportional, Integral, Derivative (PID) control algorithm has been used in industry for many years. The proper application and tuning of this algorithm has been the topic of much research and many papers. Its use with ESPs has been underutilized, yet its benefit is significant when employed properly for many reasons. Monitoring and benchmarking the system's performance while in PID mode can be hap-hazard unless employing a remote monitoring system that provides visibility for tuning and optimizing of the control algorithm.

This paper looks at two ESP systems where operation was benchmarked before the PID algorithm was implemented. The operation was then compared after the PID control mode was implemented with the aid of a downhole gauge unit. The resulting effect on the pumping system was then quantified through the use of remote monitoring and analysis systems. Significant benefits in the pumping system were shown, such as increased run life (from cooler operation), lower operating temperatures in the ESP motor, lower operating frequency resulting in lower power consumption, and stable downhole pressures with the ability to manage free gas during operation. Production and efficiency gains were realized through increased drawdown, stable operation, and immediate feedback from key operational information. Finally, the importance of proper tuning of the control algorithm is critical for the success of the implementation.

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