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Enabling Gigatonne Geo-Sequestration of Carbon Dioxide (RES83)

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    Description

    Few disagree that CCS is essential for achieving net zero, and field-demonstration projects like Sleipner, operating successfully for almost 30 years, prove the feasibility of this decarbonisation technology. Yet considerable uncertainties and operational issues remain with regard to the subsurface part of CCS. New projects are emerging every month, some facing major technical challenges. The overarching wicked problem is how to perform carbon geo-sequestration at scale, ramping up efforts from a few million to gigatonnes per year while keeping the environmental footprint, energy consumption and non-renewable resource intensity at bay to make such efforts sustainable. Only then, CCS can live up to its promise of markedly reducing the CO2 content of the atmosphere.
    This professional training course on CO2 geo-sequestration progresses from fundamentals to the state of the art of this technology, unpacking emerging knowledge, practices, geomodelling and simulation needs, and highlighting open research and engineering questions. It is tailor-made for a multi-disciplinary audience including experienced reservoir engineers as well as practitioners and scientists just starting to explore this process. It aims to be useful and engaging irrespective of your background, be it mathematics, computer science, AI, earth science or reservoir engineering.


    Course Level: Advanced
    Duration: 5 days
    Instructor: Stephan K. Matthäi

    Designed for you, if you are...

    • An upstream professional, e.g., geoscientist or reservoir engineer

    How we build your confidence

    The course will be presented as a series of lectures interleaved with breakout/discussion sessions. At the end, we will consider case studies and relevant experiments inviting site-specific questions from the audience.

    The benefits from attending

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

    • How we can predict how much carbon dioxide can be stored safely in a particular storage candidate site or type of reservoir, using both low-tech and high-tech workflows
    • The extent to which we can rely on residual trapping, capillary barriers, convective dissolution, or mineral trapping to immobilise injected CO2
    • Risks associated with CO2 injection and the ways in which they can be evaluated, eliminated, or managed
    • Key site-specific factors that contribute to uncertainty, and how that uncertainty can be reduced
    • The impact of geoheterogeneity on storage performance, and how it affects injectivity, CO2 plume migration, and immobilisation or trapping
    • How plume extent can be managed and pore-space utilisation optimised through field-data-based simulation
    • Strengths and weaknesses of commonly used simulation tools and methods applied to the performance assessment of storage sites, and when these tools are fit for purpose
    • Which monitoring methods are adequate during both the injection and post-injection phases

    Topics

    Introduction: Leading Questions & Fundamentals
    • Basics of porous media
    • Reservoir geology
      - Environments of Deposition (EODs) and facies associations suitable for geo-sequestration
      - Sedimentary rocks - siliciclastic vs. carbonates
    • Multiphase fluid flow in porous media and the constitutive relationships used in storage site simulation

    Storage Site Characterisation & Modelling
    • Building digital twins of the potential storage site and parameterising them with sparse data
    • Standard and alternative characterisation and modelling workflows - direct observations vs. geophysical data from the subsurface

    Simulation
    • Simulation-based upscaling of CO2-brine relative permeability and capillary pressure
    • History matching with well-test data only
    • Using HPC-based simulation for CO2 storage design, performance assessment, and forecasting simulator alternatives
    • Benchmarking
    • Improving the physical realism of storage simulations

    Simulation-Based Performance Assessment and Storage Design
    • Surrogate / reduced-order modelling
    • Storage optimisation
    • Forecasting of geophysical signatures and design of monitoring systems
    • Smart monitoring

    Case Studies and Physical Experiments
    • Sleipner, Decatur, Otway, FluidFlower, sand-box based faulted graben structure
    • Leading questions revisited: How to deliver giga-tonne CO2 storage?
    • Group discussion including site-specific questions and recommendations

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