Gas Lift Troubleshooting

About this class

According to many industry experts, Gas Lift is the least understood artificial lift method, but its complexity is not the reason behind its misunderstanding. Instead, the challenge behind Gas Lift is that after implementing a lousy design, the well will often keep producing, unlike other artificial lift methods (e.g., ESP) that stop producing. Thus, operators fail to recognize design or operating errors that restrain production. Therefore, there is a significant potential to increase production by oil and gas professionals who understand the Gas Lift system and its fundamental and advanced principles.

Our Gas Lift Troubleshooting course is a comprehensive training program that gives the skills and knowledge to identify, diagnose, and fix problems with gas lift wells. This gas lift course explains how to find wells that require troubleshooting. It then describes a method to properly identify the issue that the well suffers from, list the different diagnostics that can be performed to confirm the issue, and proposes solutions to be implemented to solve the problem. Participants will gain practical skills to utilize these concepts in real-world scenarios.

During this gas lift course, our expert instructor will thoroughly discuss analysing data from downhole pressure gauges, or surface parameters (well test or pressure gauges) to perform troubleshooting.

The course then guides participants across must-know troubleshooting tools, methods, and operations. Students will learn how nodal analysis (Quick look function in Prosper) can help them in their diagnostic, the different methods that can be used to start a Gas Lift well, and the effect of temperature on Gas Lift valve opening and closing pressure...

A large section of the training is dedicated to leaks, how to detect them (tubing casing communication tests), what survey can be done to precisely identify their depth (flowing pressure and temperature surveys, spinner, spectral noise logging tool…), and how to fix them. Several troubleshooting exercises will then be shown to get practice using the presented gas lift troubleshooting method.

This lesson is the 5th and last of a series designed to help you reach an advanced level in gas lift oil production and operations. It follows the 4 courses ‘Forms of Gas Lift’, ‘Gas Lift Equipment’, ‘Gas Lift Unloading Sequence and Mandrel Spacing Design’, and ‘Gas Lift Optimization and Design with Existing Mandrels’. After completing this program, you will have the skills to develop and implement appropriate gas lift troubleshooting and optimization strategies for efficient and cost-effective production that brings maximum value from any gas lift system.

We provide you with all the hands-on experience necessary for conquering today’s complex challenges in oil & gas production. We ensure you leave the class confident of returning to your worksite with one effective strategy for swift detections and corrections when issues arise. Enroll today!


Participants will acquire a deep understanding of how to troubleshoot a gas lift well. From integrity issues to multi-pointing… the course will provide you with the necessary tools needed to identify which problems your well suffers from and then troubleshoot them. The gas lift troubleshooting method explained in this training has been developed by the author of the course himself and is, therefore, not available anywhere else in the industry.


Section 1:

  • The troubleshooting challenge – how to identify wells that need troubleshooting
  • Troubleshooting methodology
  • Problem and symptoms table
  • Troubleshooting flowcharts presentations
  • Review of all possible issues one by one, their symptoms, the available diagnostics, the possible causes and the solutions
  • Troubleshooting summary – The most useful solutions that should always be tried

Section 2:

  • Nodal analysis – The Quicklook ad Multipoint Quicklook in Prosper
  • The effect of temperature on Gas Lift Valve opening closing pressure
  • The different method to start a Gas Lift well and when to use each of them
  • Generalities on tubing casing leaks
  • Tubing casing communication tests - Procedure and depth estimation
  • Leak depth methods of identification review – description, advantages and limitations
    • Pressure/Temperature/Spinner surveys (and also how to use them for monitoring)
    • Multi finger caliper
    • Leak detection tool by Peak Well System
    • Pony tail and tell tale
    • Spectral noise logging tool
    • CO2 tracer aka WellTracer from AppSmiths
    • Summary table for better selection of most appropriate method
  • Description of available solutions to fix a leak
  • Use of an Echometer to confirm a leak

Section 3:

  • Troubleshooting exercises
  • Barton Charts analysis

Designed for:

  • Production, Petroleum or Well Performance Engineers to learn how to troubleshoot a Gas Lift well and review all the tools available to help them to do so
  • Field Production Personnel to understand how to identify wells that need troubleshooting and what can be done at their level to solve the issue


  • Understanding of the well production mechanisms (inflow & outlfow) is preferred
  • Knowledge of the existing forms of Gas Lift and Gas Lift equipment (especially Gas Lift valves and orifice)
  • Understanding of the Gas Lift unloading sequence and Gas Lift optimization
  • Basic knowledge on well architecture
  • Awareness on the oilfield terms.


  • activity icon 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.

  • activity icon Tips for online training
  • activity icon Illustrations to download

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

  • activity icon 01-The troubleshooting challenge
  • activity icon 02-Troubleshooting methodology
  • activity icon 03-Problem & symptoms table
  • activity icon 04-Troubleshooting charts
  • activity icon 05-Chart 1 - Gas Lift supply issue
  • activity icon 06-Chart 1 - Obstruction on gas inlet
  • activity icon 07-Chart 1 - Obstruction on the production outlet
  • activity icon 08-Chart 1 - Production separator issue
  • activity icon 09-Chart 1 - Downhole issue
  • activity icon 10-Chart 1 - DHSV closed
  • activity icon 11-Chart 1 - First GLV too deep
  • activity icon 12-Chart 1 - Downhole obstruction
  • activity icon 13-Chart 1 - GLV closed
  • activity icon 14-Chart 2 - Gas inlet & production outlet issues
  • activity icon 15-Chart 2 - First GLV too deep
  • activity icon 16-Chart 2 - Downhole obstruction
  • activity icon 17-Chart 2 - GLV closed
  • activity icon 18-Chart 3 - Low CHP compare to network pressure
  • activity icon 19-Chart 3 - Low reservoir inflow
  • activity icon 20-Chart 3 - GL rate too low
  • activity icon 21-Chart 3 - Orifice set too high
  • activity icon 22-Chart 3 - Leak
  • activity icon 23-Chart 3 - KOP too low
  • activity icon 24-Chart 3 - Unloading valve dome pressure too low
  • activity icon 25-Chart 3 - GL rate too low
  • activity icon 26-Chart 3 - 2nd GLV too deep
  • activity icon 27-Chart 3 - KOP selected too high
  • activity icon 28-Chart 3 - Downhole obstruction
  • activity icon 29-Chart 4 - Introduction
  • activity icon 30-Chart 4 - Low CHP compare to network pressure
  • activity icon 31-Chart 4 - Inflow lower than expected
  • activity icon 32-Chart 4 - Unloading valve dome pressure too low
  • activity icon 33-Chart 4 - GL rate too low
  • activity icon 34-Chart 4 - Orifice set too high
  • activity icon 35-Chart 4 - Leak
  • activity icon 36-Chart 4 - KOP chosen too low
  • activity icon 37-Chart 4 - Incorrect calibration & valve failure
  • activity icon 38-Chart 4 - KOP selected too high
  • activity icon 39-Chart 4 - GL rate too low
  • activity icon 40-Chart 4 - Next GLV set too deep
  • activity icon 41-Chart 4 - Tubing pressure at orifice increased
  • activity icon 42-Chart 4 - GL rate above orifice critical rate
  • activity icon 43-Chart 4 - Downhole obstruction
  • activity icon 44-Chart 5 - Introduction
  • activity icon 45-Chart 5 - Instable source of GL
  • activity icon 46-Chart 5 - IGL well robing gas
  • activity icon 47-Chart 5 - Unstable production separator
  • activity icon 48-Chart 5 - Adjacent well heading
  • activity icon 49-Chart 5 - Injection across big leak
  • activity icon 50-Chart 5 - Injection across throttling valve
  • activity icon 51-Chart 5 - GL orifice too small or GL rate too high
  • activity icon 52-Chart 5 - GL orifice oversized or GL rate too low
  • activity icon 53-Chart 5 - Slug or churn flow
  • activity icon 54-Troubleshooting summary
  • activity icon Quiz #1
  • activity icon 55-The Quicklook function in Prosper
  • activity icon 56-Effect of temperature on GLV opening pressure
  • activity icon 57-Starting well with choke fully open
  • activity icon 58-Starting well with closed choke
  • activity icon 59-Well rocking
  • activity icon 60-Tubing-casing leaks
  • activity icon 61-Tubing-casing communication test
  • activity icon 62-Hole depth estimation - Case 1
  • activity icon 63-Hole depth estimation - Case 2
  • activity icon 64-Hole depth estimation - Case 3
  • activity icon 65-Leak depth methods of identification
  • activity icon 66-Flowing P-T-spinner survey
  • activity icon 67-P&T flowing survey procedure and processing
  • activity icon 68-Multi finger caliper
  • activity icon 69-Leak detection tool
  • activity icon 70-Pony tail
  • activity icon 71-Spectral noise logging tool
  • activity icon 72-WellTracer from AppSmiths
  • activity icon 73-Leak detection tool summary table
  • activity icon 74-Leak reparation options
  • activity icon 75-Echometer shot
  • activity icon Quiz #2
  • activity icon 76-Troubleshooting exercise 1-Q1&2
  • activity icon Quiz #3
  • activity icon 77-Troubleshooting exercise 1-A1&2
  • activity icon 78-Troubleshooting exercise 1-Q3&4
  • activity icon Quiz #4
  • activity icon 79-Troubleshooting exercise 1-A3&4
  • activity icon 80-Troubleshooting exercise 1-Q5
  • activity icon Quiz #5
  • activity icon 81-Troubleshooting exercise 1-A5
  • activity icon 82-Troubleshooting exercise 1-Q6
  • activity icon Quiz #6
  • activity icon 83-Troubleshooting exercise 1-A6
  • activity icon 84-Troubleshooting exercise 2-Q1-3
  • activity icon Quiz #7
  • activity icon 85-Troubleshooting exercise 2-A1-3
  • activity icon 86-Troubleshooting exercise 2-Q4
  • activity icon Quiz #8
  • activity icon 87-Troubleshooting exercise 2-A4
  • activity icon 88-Troubleshooting exercise 3-Q1
  • activity icon Quiz #9
  • activity icon 89-Troubleshooting exercise 3-A1
  • activity icon 90-Troubleshooting exercise 3-Q2-8
  • activity icon Quiz #10
  • activity icon 91-Troubleshooting exercise 3-A2
  • activity icon 92-Troubleshooting exercise 3-A3
  • activity icon 93-Troubleshooting exercise 3-A4
  • activity icon 94-Troubleshooting exercise 3-A5
  • activity icon 95-Troubleshooting exercise 3-A6
  • activity icon 96-Troubleshooting exercise 3-A7
  • activity icon 97-Troubleshooting exercise 3-A8
  • activity icon 98-Troubleshooting exercise 4-Q1-5
  • activity icon Quiz #11
  • activity icon 99-Troubleshooting exercise 4-A1&2
  • activity icon 100-Troubleshooting exercise 4-A3
  • activity icon 101-Troubleshooting exercise 4-A4
  • activity icon 102-Troubleshooting exercise 4-A5
  • activity icon 103-Troubleshooting exercise 4-Q6
  • activity icon Quiz #12
  • activity icon 104-Troubleshooting exercise 4-A6
  • activity icon 105-Troubleshooting exercise 4-Q7
  • activity icon Quiz #13
  • activity icon 106-Troubleshooting exercise 4-A7
  • activity icon 107-Barton chart interpretation - Generalities
  • activity icon 108-Barton chart 1 - Questions
  • activity icon Quiz #14
  • activity icon 109-Barton chart 1 - Answers
  • activity icon 110-Barton chart 2 - Questions
  • activity icon Quiz #15
  • activity icon 111-Barton chart 2 - Answers
  • activity icon 112-Barton chart 3 - Questions
  • activity icon Quiz #16
  • activity icon 113-Barton chart 3 - Answers
  • activity icon 114-Barton chart 4 - Questions
  • activity icon Quiz #17
  • activity icon 115-Barton chart 4 - Answers
  • activity icon 116-Barton chart 5 - Questions
  • activity icon Quiz #18
  • activity icon 117-Barton chart 5 - Answers
  • activity icon 118-Barton chart 6 - Questions
  • activity icon Quiz #19
  • activity icon 119-Barton chart 6 - Answers
  • activity icon 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.

  • activity icon Spectral noise logging tool illustration video
  • activity icon Echometer dual shot webinar presentation and video 1
  • activity icon Echometer dual shot webinar presentation and video 2
  • activity icon Pictures of Gas Lift valve ball cut due to valve chattering

Ratings and reviews

4 Reviews