ESP System Monitoring and Diagnosis from Surface Power Acquisition

Abstract

Abstract Electrical submersible pump (ESP) operation is very sensitive and is challenging to monitor and diagnose because of limited downhole sensor information. A new data acquisition (DAQ) system for ESP system diagnosis overcomes this limitation by also including abundant information in the electrical surface signals. The diagnosis covers the surface equipment, cable, and downhole equipment based on a comprehensive combination of all available measurements, actuator (adjustable control inputs, such as voltage, frequency and surface choke position) settings, and calculated electrical performance parameters[from power quality monitoring (PQM)].Through spectral analysis electrical signal analysis (ESA) evaluates even theelectrical signal higher frequency contents to get even more insight into the downhole equipment. The analysis outcome supports maintenance and optimization with a comprehensive assessment of system and component health. Additional capabilities enable assessment and optimization of operational conditions.