Electrical Submersible Pump (ESP):
Design and Evaluation
The Electrical Submersible Pump (ESP) is an artificial lift system that consists in a centrifugal multistage downhole pump that is driven by a downhole electric motor energized by a cable from the surface. Despite of being commonly used there are some conceptual and operational aspects that are not clearly understood and require a detailed review to ensure proper application of this method.
ESPs are used in wells that cease to flow or to boost production in wells that can flow naturally. The design and optimization of the ESP system aims to reduce the flowing bottom pressure through the increased pressure provided by the multiple stages which allows to overcome the weight of the column, the friction and the back pressure existing on the surface. This method is particularly attractive due to its ability to handle high production rates.
In order to have an adequate ESP operation, it is necessary to select the appropriate wells for its use based on the advantages and limitations of the method, understand each of its components, know the design / sizing process of the equipment, and its optimization.
To understand the theoretical foundations of the method of artificial lifting by Electrical Submersible Pump and the interrelation of all the components that make up this system.
By the end of this course, delegate will:
- Understand the advantages and limitations of the BES system, its application window for the proper selection of wells.
- Understand the components of the Electrical Submersible Pump system and their functions.
- Understand how reservoir conditions (inflow, % water, Oil gas ratio, pump inlet pressure, bottom gas separation efficiency, PVT properties, viscosity, etc.) and the well trajectory- completion impose restrictions for the design and optimization of an ESP system.
- Understand the ESP’s pump head, power and efficiency performance curves and how to use them.
- Understand how the change in operating speed (frequency) affects the performance of the pump and the motor.
- Learn the step-by-step design process (equipment selection and sizing) of an ESP system.
- Learn the difference between design and analysis-optimization.
- Understand the effects of viscosity and free gas in the ESP.
- Learn the variables of Monitoring and the basic diagnosis of ESP.
Who Should Attend?
- Petroleum Engineers
- Production Engineers
- Optimization Engineers
- Oilfield Operation Engineers or Technicians
- Interactive Online Lectures
- Global Case studies
- Video Presentation
- Group Discussion
Please click to view.
- Evaluation at the beginning of the course
- Comparison with other artificial lift methods:
- Electrical Submersible Pump
- Advantages and Limitations
- Generic application window
- Components of the ESP system
- Application window considering well restrictions.
- Theory of centrifugal pumps
- Theoretical performance curve for centrifugal pump
- Real performance curve for centrifugal pump (catalog supplied by manufacturers)
- Difference between centrifugal pumps and positive displacement pumps
- Up Thrust and Down Thrust. Suggested operational range. Affinity laws for centrifugal pumps.
- Affinity laws for motors.
- Nomenclature for ESP stages names and ESP engine names.
- ESP design process.
- Nodal analysis brief review.
- Review Inflow curve IPR. How the design and operation of the ESP is affected.
- Review outflow curve for natural flow and ESP lifted wells
- Effects of the free gas fraction in BES. Clarifying and expanding the vision of the problem of free gas.
- Selection of the pump model
- Determination of the number of stages
- Selection of the bottom gas separator.
- Selection of the downhole motor
- Cable selection
- Selection of surface equipment
- Evaluation / analysis of ESP systems
- Corrections by viscosity
- Free gas effects
- Basic diagnostics of ESP systems
- Monitoring of ESP systems
- Evaluation at the end of the course
About Expert Trainer
The expert trainer has 26 years of experience as a specialist in artificial lift and well productivity and software development applied to oil production. He has worked as an instructor teaching courses in the area of oil production where he has trained 700+ engineers in the companies where he has worked.
He has worked as a specialist in artificial lifting in Venezuela, Kuwait, the United Arab Emirates and the United States. He was awarded with the SPE Middle East Production and Operations Award 2015 for his technical contributions in artificial lifting for the production of hydrocarbons.
He holds a BSc Physics & BSc Computer Engineer from Simón Bolívar University Venezuela, as well as a MSc in Petroleum Engineering from the University of Texas at Austin, USA.