Miscible Gas Injection and WAG Optimization Training Course

Miscible Gas Injection and WAG Optimization Training Course

Introduction

Miscible Gas Injection and WAG Optimization Training Course is designed to equip oil and gas professionals with advanced technical knowledge and practical skills in enhanced oil recovery (EOR), miscible gas flooding, water-alternating-gas (WAG) injection, reservoir engineering, and production optimization. This course explores the fundamental principles of miscibility, minimum miscibility pressure (MMP), gas displacement mechanisms, phase behavior, reservoir fluid characterization, and gas injection design. Participants will examine the application of carbon dioxide (CO₂), hydrocarbon gas, and other suitable injection gases in improving microscopic displacement efficiency and mobilizing residual oil. The training also covers reservoir simulation, compositional modeling, pressure maintenance, injection surveillance, and data-driven reservoir management, enabling participants to evaluate the technical and economic feasibility of miscible gas injection projects across different reservoir conditions.

The course further emphasizes WAG injection optimization, gas mobility control, conformance management, breakthrough prevention, and integrated field development planning. Participants will learn how to optimize water-to-gas ratios, injection cycle durations, slug sizes, operating pressures, and injection rates to improve sweep efficiency while managing gas channeling, early breakthrough, and operational costs. Practical exercises and industry-based case studies will demonstrate how reservoir simulation, production history matching, pressure-transient analysis, and performance monitoring can support more effective injection strategies. The program also introduces CO₂-EOR, carbon storage opportunities, low-carbon oilfield development, and digital reservoir optimization to help participants understand the relationship between recovery enhancement and emissions management. By the end of the training, participants will be better equipped to design, assess, and optimize miscible gas injection and WAG projects that deliver improved oil recovery, operational efficiency, and long-term reservoir value.

Course Duration

5 days

Course Objectives

By the end of this course, participants will be able to:

1. Explain the fundamental principles of miscible gas injection and enhanced oil recovery (EOR).
2. Evaluate minimum miscibility pressure (MMP) using laboratory data, empirical correlations, and simulation techniques.
3. Analyze reservoir fluid properties, phase behavior, and compositional characteristics affecting miscibility.
4. Compare CO₂, hydrocarbon gas, and other injection gases for reservoir-specific recovery applications.
5. Design effective water-alternating-gas (WAG) injection strategies for improved reservoir sweep efficiency.
6. Optimize WAG injection cycles, slug sizes, water-to-gas ratios, and injection rates.
7. Apply compositional reservoir simulation to forecast gas flooding and WAG performance.
8. Identify and mitigate gas breakthrough, channeling, gravity override, and unfavorable mobility ratios.
9. Evaluate reservoir heterogeneity, fracture networks, and permeability contrasts affecting injection performance.
10. Implement production surveillance and real-time injection monitoring to improve reservoir management.
11. Apply history matching and sensitivity analysis to optimize gas injection development plans.
12. Assess the economic feasibility of miscible gas injection projects through recovery forecasting, cost analysis, and uncertainty evaluation.
13. Integrate CO₂-EOR, carbon management, and low-carbon oilfield strategies into sustainable reservoir development planning.

Target Audience

1. Reservoir engineers.
2. Petroleum engineers.
3. Reservoir simulation engineers
4. Production engineers managing gas injection and WAG operations.
5. EOR specialists designing miscible displacement projects.
6. Geoscientists and petrophysicists evaluating reservoir heterogeneity and fluid distribution.
7. Oilfield project managers, technical leads, and asset development professionals.
8. Energy consultants and technical professionals

Course Modules

Module 1: Fundamentals of Miscible Gas Injection and Enhanced Oil Recovery

• Principles of primary, secondary, and tertiary oil recovery.
• Fundamentals of miscible and immiscible displacement mechanisms.
• Role of interfacial tension reduction in improving microscopic displacement efficiency.
• Applications of CO₂, hydrocarbon gas, and nitrogen injection.
• Case study: Comparing miscible gas injection with conventional waterflooding in a mature oil reservoir.

Module 2: Reservoir Fluid Characterization and Miscibility Evaluation

• Reservoir fluid composition and pressure-volume-temperature (PVT) analysis.
• Phase behavior of multicomponent hydrocarbon systems.
• First-contact and multiple-contact miscibility mechanisms.
• Minimum miscibility pressure (MMP) determination and validation.
• Case study: Evaluating MMP and gas selection for a light-oil reservoir using laboratory and compositional data.

Module 3: Miscible Gas Injection Design and Reservoir Screening

• Reservoir screening criteria for miscible gas flooding.
• Assessment of reservoir pressure, temperature, depth, and oil composition.
• Injection gas selection based on availability, compatibility, and recovery potential.
• Injection pressure management and fracture-pressure constraints.
• Case study: Developing a screening framework for miscible gas injection in a depleted offshore reservoir.

Module 4: Water-Alternating-Gas (WAG) Injection Fundamentals

• Principles of WAG injection and combined gas-water displacement.
• Simultaneous WAG, conventional WAG, and hybrid injection approaches.
• Water-to-gas ratios and injection sequence design.
• Gas mobility control and improved macroscopic sweep efficiency.
• Case study: Comparing continuous gas injection with WAG injection in a heterogeneous sandstone reservoir.

Module 5: WAG Optimization and Injection Cycle Design

• Optimization of WAG slug sizes, cycle durations, and injection rates.
• Selection of water and gas injection ratios for different reservoir conditions.
• Evaluation of injection pressure, voidage replacement, and reservoir support.
• Sensitivity analysis for WAG operating parameters.
• Case study: Optimizing WAG cycles to improve oil recovery while reducing excessive gas production.

Module 6: Reservoir Simulation and Digital Optimization

• Building compositional reservoir simulation models for gas injection.
• Representing multiphase flow, phase behavior, and gas dissolution.
• History matching production and injection data.
• Using scenario analysis and automated optimization techniques to compare WAG designs.
• Case study: Using compositional simulation to optimize WAG injection in a layered reservoir with variable permeability.

Module 7: Operational Challenges, Surveillance, and Performance Management

• Diagnosing gas breakthrough, channeling, and gravity override.
• Managing reservoir heterogeneity and unfavorable mobility ratios.
• Monitoring injection pressure, gas-oil ratio (GOR), water cut, and production response.
• Applying production logging, pressure-transient analysis, and injection surveillance.
• Case study: Investigating premature gas breakthrough and redesigning injection allocation in a mature oilfield.

Module 8: Economics, CO₂-EOR, and Integrated Field Development

• Estimating incremental oil recovery and project value.
• Evaluating gas supply, compression, recycling, separation, and water-handling costs.
• Conducting economic sensitivity analysis and uncertainty assessment.
• Integrating CO₂-EOR with carbon capture, utilization, and storage (CCUS) considerations.
• Case study: Assessing the technical, economic, and carbon-management implications of a CO₂-WAG pilot project.

Training Methodology

• Interactive lectures and presentations.
• Group discussions and brainstorming sessions.
• Hands-on exercises using real-world datasets.
• Role-playing and scenario-based simulations.
• Analysis of case studies to bridge theory and practice.
• Peer-to-peer learning and networking.
• Expert-led Q&A sessions.
• Continuous feedback and personalized guidance.

Register as a group from 3 participants for a Discount

Send us an email: info@datastatresearch.org or call +254724527104 

Certification

Upon successful completion of this training, participants will be issued with a globally- recognized certificate.

Tailor-Made Course

 We also offer tailor-made courses based on your needs.

Key Notes

a. The participant must be conversant with English.

b. Upon completion of training the participant will be issued with an Authorized Training Certificate

c. Course duration is flexible and the contents can be modified to fit any number of days.

d. The course fee includes facilitation training materials, 2 coffee breaks, buffet lunch and A Certificate upon successful completion of Training.

e. One-year post-training support Consultation and Coaching provided after the course.

f. Payment should be done at least a week before commence of the training, to DATASTAT CONSULTANCY LTD account, as indicated in the invoice so as to enable us prepare better for you.