Course Details

Objective

By the end of this course, participants will:

?  Understand the Corrosion Mechanisms in Downhole Tubing: Identify the various types of corrosion and how they occur in downhole tubing systems.

?  Apply Corrosion Control Strategies: Select appropriate materials and corrosion prevention methods to ensure the longevity of downhole tubing.

?  Utilize Monitoring Techniques: Implement corrosion monitoring systems to assess and manage the condition of downhole tubing in real-time.

?  Analyze Corrosion Data: Use inspection and diagnostic tools to assess corrosion rates and make informed decisions on maintenance and mitigation.

?  Design Effective Mitigation Plans: Develop corrosion mitigation plans, including the use of inhibitors, cathodic protection, and appropriate maintenance schedules.

?  Learn from Case Studies: Understand the real-world impact of corrosion in downhole tubing systems and apply best practices from successful case studies.

Content

COURSE PROGRAM:

Day 1: Introduction to Downhole Tubing Systems and Corrosion

• Overview of Downhole Tubing
  • Function and role of downhole tubing in oil and gas production systems.
  • Types of downhole tubing and materials used (carbon steel, alloys, etc.).
  • Factors influencing tubing performance and lifespan.
• Corrosion Fundamentals
  • What is corrosion? Understanding the basic chemistry of corrosion.
  • Types of corrosion: uniform, pitting, crevice, galvanic, and microbiologically influenced corrosion (MIC).
  • Factors that affect corrosion in downhole environments (temperature, pressure, fluids, and flow conditions).
• Corrosion in Oil and Gas Wells
  • Environmental conditions in downhole tubing: acids, salts, hydrogen sulfide (H2S), carbon dioxide (CO2), and produced water.
  • Common failure mechanisms and causes of corrosion in tubing systems.

Day 2: Corrosion Mechanisms in Downhole Tubing

• Types of Corrosion in Downhole Tubing
  • Pitting Corrosion: localized corrosion resulting in small holes.
  • Galvanic Corrosion: when different metals come into contact in the presence of an electrolyte.
  • Stress Corrosion Cracking (SCC): cracking due to tensile stress and corrosion.
  • Microbiologically Influenced Corrosion (MIC): corrosion caused by bacteria.
  • Hydrogen Sulfide (H2S) Corrosion: causes souring and weakening of materials.
  • CO2 Corrosion: leading to the formation of carbonic acid in the presence of water.
• Mechanisms of Corrosion
  • Electrochemical processes involved in corrosion.
  • Impact of wellbore conditions (temperature, pressure, fluid composition).
  • Role of flow dynamics (turbulent vs laminar flow) and scale deposition in accelerating corrosion.
• Corrosion Rate Assessment
  • Factors influencing corrosion rate: pH, temperature, chemical composition.
  • Techniques for calculating and predicting corrosion rates in downhole tubing.

Day 3: Corrosion Monitoring and Inspection Techniques

• Downhole Corrosion Monitoring Methods
  • Electrochemical corrosion monitoring (potential, current, and resistance measurements).
  • Corrosion coupons and probes: installation and data interpretation.
  • Use of intelligent logging tools for downhole monitoring.
  • Real-time corrosion monitoring using sensors and telemetry systems.
• Inspection and Diagnostics
  • Advanced inspection methods for downhole tubing: ultrasonic testing, magnetic flux leakage, and eddy current.
  • Identifying corrosion damage through visual inspection (post-maintenance or pull-out).
  • Case studies of inspection failures and success stories in corrosion management.
• Data Analysis and Interpretation
  • Analyzing corrosion data to assess well integrity.
  • Creating corrosion profiles for tubing systems and predicting future degradation.

Day 4: Corrosion Control and Mitigation Strategies

• Corrosion Prevention Strategies
  • Material selection: corrosion-resistant alloys, coatings, and linings for tubing.
  • Cathodic protection: sacrificial anodes and impressed current systems for protecting downhole equipment.
  • Chemical inhibitors: types of corrosion inhibitors used in oil and gas wells (e.g., H2S inhibitors, CO2 inhibitors, scale inhibitors).
  • Downhole equipment protection: advanced coatings and materials for tubing and downhole tools.
• Injection of Corrosion Inhibitors
  • Techniques for injecting corrosion inhibitors into production wells.
  • Selecting the right inhibitor based on well conditions (H2S, CO2, temperature).
  • Monitoring the performance of corrosion inhibitors over time.
• Wellbore Fluid Management
  • Importance of managing produced water, drilling fluids, and completion fluids.
  • Treatment methods for controlling corrosive elements in well fluids (pH control, demulsification, etc.).
  • Managing scaling and corrosion simultaneously.

Day 5: Case Studies, Risk Management, and Best Practices

• Risk-Based Integrity Management
  • Using risk assessment to prioritize corrosion control and maintenance actions.
  • Developing a risk-based integrity management program for downhole tubing.
  • How to integrate corrosion monitoring data with overall well integrity management.
• Case Studies of Corrosion Failures
  • Real-life examples of downhole corrosion issues: causes, consequences, and lessons learned.
  • Case study analysis of successful corrosion mitigation programs.
  • Discussion of how different companies have successfully dealt with corrosion in challenging environments.
• Future Trends in Corrosion Management
  • Advances in corrosion monitoring technology.
  • Future materials and technologies for corrosion prevention.
  • Role of automation and AI in corrosion prediction and management.

NOTE:

Pre-& Post Tests will be conducted.

Case Studies, Group Exercises, Group Discussions, Last Day reviews, and assessments will be carried out.

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Methodology

A highly interactive combination of lectures and discussion sessions will be managed to maximize the amount and quality of information and knowledge transfer. The sessions will start by raising the most relevant questions and motivating everybody to find the right answers. You will also be encouraged to raise your own questions and to share in the development of the right answers using your own analysis and experiences.  Tests of multiple-choice type will be made available on daily basis to examine the effectiveness of delivering the course.

Very useful Course Materials will be given.

• 30% Lectures
• 30% Workshops and work presentation
• 20% Group Work& Practical Exercises
• 20% Videos& General Discussions