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