Flow simulation of CO2 storage in saline aquifers using black oil simulator

SeyedMohammad Shariati pour, Gillian Elizabeth Pickup, Eric James Mackay, N. Heinemann

    Research output: Contribution to conferencePaper

    Abstract

    Sequestration of carbon dioxide in geological formations has drawn increasing consideration as a potential method to reduce the level of CO2 in the atmosphere, and therefore mitigate climate change. In particular, saline aquifers can potentially provide a large storage volume world-wide. It is essential to assess the risk involved in storing CO2 in the subsurface, and simulations of CO2 injection play an important role. Detailed simulations using a compositional simulator, which solves the equation of state for the fluids and calculates the partitioning of fluids between phases, is time consuming. It is therefore advantageous to use a simpler method for simulation, such as a modification of a black-oil simulator (designed for use in the oil industry), where fluid properties are input using look-up tables.

    In this study, we have tested the accuracy of flow simulations of CO2 storage in saline aquifers using a black-oil simulator (BOS) compared with a compositional simulator (CS). A range of models was investigated: 2D, 3D and radial models, horizontal and tilted, and homogeneous and heterogeneous. On the whole the results compared well, although accuracy of the BOS depended on the type of grid used, being less accurate for radial models, where discretisation effects were evident.

    In agreement with other studies, we found that the black-oil simulations were, on average, a factor of four faster than compositional simulations.
    Original languageEnglish
    Pages1-13
    Number of pages13
    DOIs
    Publication statusPublished - Feb 2012
    EventCarbon Management Technology Conference - Orlando, United States
    Duration: 7 Feb 20129 Feb 2012

    Conference

    ConferenceCarbon Management Technology Conference
    Country/TerritoryUnited States
    CityOrlando
    Period7/02/129/02/12

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