الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Electrical submersible pumping systems (ESPs) are considered an effective and economical mean of lifting large volumes of fluids from great depths under a variety of well conditions. ESP represents a significant CAPEX (capital expenditure) and OPEX (operating expenditure) item for oil companies. If properly designed, sized, installed and operated, ESP can provide years of relatively trouble free production. ESP run life is a principal criterion that is typically evaluated before the initial design and throughout the well’s life time. A short ESP run life introduces additional intervention costs and considerable production downtime.
This research presents a study of the most common operational problems that cause a reduction in ESP performance and eventual ESP failure in the Egyptian oilfields, and identify the reasons and potential solutions for these problems.
For the purpose of effective analysis of ESP problems, a new failure tracking system structure and procedures has been developed with ultimate goal for better understanding of factors affecting ESP run life through providing a systematic workflow for categorizing ESP failures and providing a common terminology to record and categorize ESP failure information to ensure consistency in performing ESP failure analysis with the gathered data.
An ESP surveillance and diagnosis model has been presented which uses the ESP operational data like downhole sensor and electrical surface parameters and well production parameters data to diagnose degradation in the ESP performance and to categorically differentiate between an ESP problem and a reservoir inflow problem. As well as quantifying the amount of pump degradation, the model determines the amount of lost production.
The implementation of the ESP surveillance model and the results of such analysis have been presented for different cases representing the most common ESP operational problems. The use of this model across these wells has shown a positive impact on proactively managing ESP operational problems resulting in identification of changes to regain production and prolonging the ESP run life.