Nodal Analysis - Well Outflow

In Oil Production

About this class

Well production mechanisms are one
of the most important things to understand when working at optimizing your
wells. Whatever if your well is in natural flow or if it uses artificial lift,
mastering the concepts of inflow and outflow will allow you to understand any
well behavior and optimize it.

This course focuses on the outflow
mechanism. You will be guided to many key concepts like VLP curves, pressure
losses, flow regimes, multiphase flow pressure correlations, nodal analysis…

Well performance, reservoir and petroleum engineering will be all linked. You
will be shown how PVT parameters impact the production of your well.

Gas production will also be discussed through the concepts of critical velocity
and liquid loading.

By following this course you will learn how to increase the production of your
oil and gas wells.


This course connects reservoir engineering to well performance and petroleum
engineering. Participants will acquire a good understanding of well outlfow

Taken together with the Inflow Mechanism, it will teach what a senior petroleum
engineer should know about nodal analysis and well production.


  • Fluid path from bottom to surface
  • Hydrostatic pressure and pressure
  • Vertical flow pressure curves and
    sensitivities to GLR & WHP variations
  • Vertical lift performance (VLP)
  • Hold up and slip velocity
  • Horizontal & vertical flow
  • Flow pattern maps
  • Impact of PVT on the outflow in oil
    wells (viscosity, bubble point and solution GOR)
  • Gas well:
    • Impact of PVT on the outflow (dew point and CGR)
    • Liquid loading and how to avoid it
    • Turner’s critical velocity
    • Gas well deliquification
  • Multiphase flow pressure correlation
    • Main correlations available and main features
    • How to select the best correlation using a nodal analysis software (Prosper)
  • Effect of emulsion on viscosity
  • Why you need artificial lift
  • How to increase production
  • Exercises: Impact of 6 different
    parameters variation on inflow and outflow

 Designed for:

  • Production, Petroleum or Well
    Performance Engineers to maximize their well production
  • Reservoir engineers to link reservoir
    engineering with well production
  • Field Production Personnel to
    understand the criticality of data
  • Completion or Surface Facilities
    Engineers to understand what they can do to help maximizing well production


  • Basic knowledge on well architecture

  • Awareness on the oilfield terms

  • Understanding of the inflow mechanism


  • Announcements

    Welcome!  This training course is the culmination of researching papers, manuals, and lessons learned from my years of experience in the field.  I have carefully selected the best material to help you grasp concepts quickly and retain them for years to come.

    Our courses go through a continuous improvement process, which is critical for ensuring industry best practices and topics remain relevant with technological advancements.  Your feedback also plays a vital role in the process.  Thus, we welcome your thoughts on the course and encourage your input for future improvement of this training course.

    Thank you for purchasing this course.

  • Tips for online training
  • Illustrations to download

    Print these slides and use them to take notes along the videos.

  • 01-Fluid path from well bottom hole to surface
  • 02-Hydrostatic pressure and pressure losses
  • 03-Hydrostatic pressure in imperial system
  • Quiz 1
  • 04-Hydrostatic pressure calculation - Solution
  • 05-Vertical flow pressure gradient curves presentation
  • 06-Effect of GLR on BHFP_Exercise 1
  • Quiz 2
  • 07-Effect of GLR on BHFP_Exercise 1 solutions
  • 08-Effect of WHP on BHFP_Exercise 2
  • Quiz 3
  • 09-Effect of WHP on BHFP_Exercise 2 solutions
  • 10-VLP curve
  • 11-Slip velocity and holdup
  • 12-Vertical flow regimes
  • 13-Vertical flow pattern maps
  • 14-Horizontal flow regimes
  • 15-PVT impact on outflow - Viscosity
  • 16-PVT impact on outflow - Pb & Rs
  • 17-PVT impact on outflow - Gas well
  • 18-Gas well liquid loading - Critical velocity
  • 19-Gas well liquid loading - Turner's method
  • 20-Gas well - How to avoid liquid loading or deliquify
  • 21-Main correlations available
  • 22-Correlation choice & match in Prosper
  • 23-Emulsion effect on viscosity
  • 24-Flowing well
  • 25-Non flowing well
  • 26-How to improve production-Part 1
  • 27-How to increase production-Part 2
  • 28-Evolution of IPR and VLP_Exercises
  • Evolution of IPR & VLP - Exercise
  • 29-Evolution of IPR and VLP_Exercises solutions
  • Quiz 4
  • Conclusion

    Congratulations, you have reached the end of the training. 

    We hope you enjoyed the learning experience. Please don't hesitate to send us your comments and feedback to help us improve the experience.  

    Thank you for purchasing this course, and don't forget to check out our other training content.

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