A simulation study on CO2 sequestration in saline aquifers: trapping mechanisms and risk of CO2 leakage

Jalal Foroozesh*, Monychol Adhil Dier, Mohamed Gamal Rezk

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

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    Abstract

    Carbon dioxide (CO2) is one of the main greenhouse gases that its high concentration in the atmosphere has caused the global warming issue. Sequestering CO2 in a suitable geological subsurface formation can be a feasible method to reduce the CO2 concentration in the atmosphere. CO2 sequestration in saline aquifers can store a significant volume of CO2 underground for thousand years. However, injecting CO2 into such formations does not guarantee a safe storage because CO2 could leak back to surface or contaminate the formation water. Hence, a proper evaluation of the sequestration site is required. In this study, a case study regarding CO2 sequestration in saline aquifers was conducted using CMG-GEM compositional simulator to study the effects of aquifer permeability, injection pressure and well trajectory on CO2 trapping mechanisms during sequestration process. A field-scale model with one injector well in which CO2 was injected into the aquifer for ten years and simulated for hundred years was studied. The results showed that, CO2 solubility trapping is the dominant mechanism with less risk of leakage when the aquifer has a good vertical permeability and the injection pressure is not high regardless of the well trajectory.

    Original languageEnglish
    Title of host publicationMATEC Web of Conferences: UTP-UMP-VIT Symposium on Energy Systems 2018 (SES 2018)
    PublisherEDP Sciences
    Number of pages6
    Volume225
    DOIs
    Publication statusPublished - 5 Nov 2018
    Event2018 UTP-UMP-VIT Symposium on Energy Systems - Tamil Nadu, India
    Duration: 18 Sept 201819 Sept 2018

    Publication series

    NameMATEC Web of Conferences
    PublisherEDP Sciences
    ISSN (Print)2261-236X

    Conference

    Conference2018 UTP-UMP-VIT Symposium on Energy Systems
    Abbreviated titleSES 2018
    Country/TerritoryIndia
    CityTamil Nadu
    Period18/09/1819/09/18

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