COURSE CONTENT

Introduction

After completing this section, you would be able to identify the greenhouse gas making the most contribution to global warming and understand the methodologies used to forecast its future effects on global climate. You would also understand that the present trend of things, which show increasing draughts, desertification, rising sea levels, more frequent tornados and all such weather phenomena, all of which the forecast tools have been able to match, would continue based on the forecast, unless reasonable actions are taken.

Reservoir Engineering Aspects with CMG Reservoir Simuation Software Suites

Upon completing this section, you would know what processes are at work in your underground storage receptacles over time, after injecting CO2 into them. The different available natural physical and chemical processes are explained such that engineers and geoscientists can take full advantage of them during planning and implementation of CCUS projects, and that stakeholders’ confidence can be gotten regarding the durability of sequestration process.

CMG’s software would be used, in class, to demonstrate physical and chemical aspects of the CCUS processes thereby deepening the training experience.
The course module would give an overview of the modelling options built into the GEM simulator for CO2 Storage and Capture in an aquifer. A 2D model will be built and various CCS modelling tools will be progressively added on, starting from simple structural trapping down to mineralisation. The effect of each added process will be analysed in detail. A purpose-designed CCS graphical user interface will be used for adding the CO2 trapping mechanisms into the models, including connecting to geochemical databases for accurate mineralisation and dissolution modelling of geochemical species, including water vaporisation phenomena. The issue of possible caprock failure will be represented using CMG’s geomechanical options for fracture generation connected with rock stress changes.
Finally, a 3D thermal GEM model will be connected to CMG’s Well/Surface Network modelling tool CoFlow. The user will learn how to import the model into CoFlow and build a wellbore model to control the well on tubing head pressure and temperature constraints.

• Base model with structural trapping
• Hysteresis Trapping
• Solubility Trapping
• Barton-Bandis Fracture Permeability Model
• Mineral Trapping
• Water Vaporisation
• 3D GHG Model with Geomechanics
• Wellbore Modelling with CoFlow with coupling to GEM

Well Design Considerations

After this section, you would understand the importance of having multiple barriers in your CCUS project wells. You would know the reason that the pressure at the sand face perforations is higher at abandonment in the case of CCUS project wells, in contrast to conventional wells. You would also know the importance of choosing the right Corrosion Resistant Alloys, materials and cement for well casing, tubulars and installations.

Measurement, Monitoring and Verification

For the safety of the environment this section would teach you how to verify the storage quality, monitor their migration pathways using dedicated tools and ensure the seal integrity of the storage unit.