Dual ESP With Single Y-Tool & Pump Support - Redundancy
System 05: Y-Tool Only Completions
Normally the upper ESP is run until failure. Once failed, production can be resumed by starting the lower ESP. This extends production time and allows a workover to be planned to eliminate deferred production.
Switch over between ESPs can be done in a variety of ways. Automatic switch-over is achieved by either having ESP check valves above each pump, or incorporating a Y-valve.
Slickline switch-over is achieved by having a blanking plug in the Y-tool for producing the upper ESP, and replacing the blanking plug with an isolation sleeve for producing with the lower ESP.
Advantages
Disadvantages
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