COURSE DURATION: 5 days

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LEVEL: Intermediate

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DESIGNED FOR YOU, IF YOU ARE...

•    A petroleum Engineer

•    Production Engineer

•    A development geologist, reservoir modeller or field engineer

•    A production manager

•    Field manager

•    Drilling manager, etc.

 

By the end of the course you will feel confident in your understanding of:​

• Skin Damage monitoring

• Selection of Additives

• Designing a Stimulation Job.

• Main parameters and KPI’s for a successful Stimulation Operation.

• Coiled Tubing for a successful Stimulation

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WHAT ARE THE GOALS?

•  Introduction to stimulation operations

• Formation damage mechanisms and their identification

• Brainstorming on skin damage

• Acids reactions and their selection for carbonates and sandstones

• Acids and additives used in matrix stimulation

• Candidate well selection

• Acid treatment design

• Acid placement and diverting technologies

• Acid displacement and flow back

• Laboratory tests

• Acid fracturing basics

• HSE and acidizing operations

• Coiled Tubing and its importance in Stimulation Operations

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How will this Training Course be presented?

This Course will be presented using properly designed slides, some with animation and several videos on relevant issues. Teaching methods include also calculations on related issues.

Several examples of actual Stimulation Programs will be presented. 

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DAILY AGENDA​

 

Day 1: Introduction to Matrix Acidizing & Reservoir Fundamentals

Overview of Acidizing Techniques

• Understand the role of acidizing in well stimulation.

• Types of acidizing: Matrix acidizing vs. Fracture acidizing

• Applications and goals of acid stimulation

• Acidizing vs. other stimulation techniques (e.g., hydraulic fracturing, water flooding, etc)

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Formation and Reservoir Characteristics

• Carbonate reservoirs vs Sandstone reservoirs

• Formation damage and its impact on well performance

• Role of permeability, porosity, and skin factor in acidizing

• Geology basics: Clay, fines migration and swelling in sandstones

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Acid Chemistry & Selection

• Acid composition (HCl, HF, organic acids)

• Reaction kinetics with carbonate and sandstone

• Factors affecting acid choice: Temperature, pressure and formation type

• How to select the right acid system

 

Day 2: Acidizing Equipment & Job Design

Acidizing Equipment & Tools

• Surface equipment: Pumps, tanks, manifolds

• Downhole tools: Perforating guns, packers

• Safety equipment: Corrosion inhibitors, pressure monitoring systems

• Key considerations in equipment design and integrity

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Designing an Acidizing Job

• Design an acid treatment program based on well data.

• Factors influencing acid volume, concentration, and flow rate

• Job design for carbonate vs sandstone formations

• Creating a treatment plan based on well logs, reservoir characteristics, and skin factor

• Defining acidizing goals: Damage removal, permeability enhancement, stimulation efficiency

 

Day 3: Treatment Fluid & Additives

Types of  Fluids for Acidizing

• Mud acid: HCl + HF for sandstone

• Organic acid systems (Acetic acid, formic acid) for specific applications

• Corrosion inhibitors and scale inhibitors

• Importance of additives in controlling reaction rates, minimizing corrosion, and stabilizing formation

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Additives and Their Functions

• Clay stabilizers: Prevent clay swelling in sandstone formations

• Iron control agents to avoid precipitation of iron scales

• Surfactants and emulsifiers to prevent oil-formation emulsions

• Diverting agents: Ensure uniform acid distribution across the formation

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Day 4: Acidizing Procedures & Flowback

Acidizing Procedure

• Preparation phase: Well testing, equipment setup, safety protocols

• Preflush stage: Types of preflush fluids and their functions

• Main acid injection: How to determine the injection rate and volume

• Shut-in and reaction time: Monitoring reaction progress and controlling time

• Overflush stage: Ensuring full fluid displacement and acid penetration

 

Flowback and Well Clean-Up

• Flowback: Removing acid byproducts and spent acid

• Ensuring minimal fines remobilization and reservoir damage

• Pressure transient analysis to confirm skin factor reduction

• Monitoring production rates post-job and interpreting results

 

 

Day 5: Post-Job Evaluation & Troubleshooting

Post-Job Evaluation & Performance Monitoring

• Key performance indicators: Skin factor reduction, production rate increase

• Pressure transient analysis (PTA) and skin factor calculation

• Well testing and productivity index (PI) assessment

• How to track and interpret post-treatment production data

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Troubleshooting & Case Studies

• Case study analysis: Successful vs. unsuccessful acid treatments

• Troubleshooting:

  • Excessive pressure drop – Possible causes and solutions

  • Stuck packers or equipment failure

  • Fines migration or clay swelling

  • Water breakthrough and handling mixed zones

• Lessons learned and best practices for improving job success

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Course Take aways & Q&A

• Review the core concepts from the course

• Address any lingering questions from participants

• Provide additional resources and references for further learning

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iNSTRUCTOR:

TBA