A Simplified Mathematical Model for Formation Caprock Integrity Incorporating Creep Deformation: Implications for Hydrogen Underground Storage

M. AlDhuhoori, H. Belhaj, F. AlHameli, A. Moncada

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    1 Scopus citations

    Abstract

    This research effort aims at addressing the Geo-mechanical aspect of hydrogen underground storage, specifically caprock integrity tests using creep deformation modelling. This study also concentrates on time and injection rate dependent processes which could lead to permanent deformation of reservoir rocks during injection and production cycles due to the cyclical pore-pressure changes. The newly developed model includes a new term that accounts for pore expansion and compaction, and was coupled to the simplified power law. The model was then verified against uniaxial laboratory data and validated by comparing it to the power law model. The idea is to simulate several injection and production cycles of vast amounts of hydrogen into a reservoir that is saturated primarily by saline formation water (aquifer) under certain conditions to assess caprock integrity. The model has been validated using the uniaxial test data provided by Wu et al.2020 and achieved good accuracy. Furthermore, the model was compared to the simplified power law with no apparent advantages. This is attributed to the low-pressure differential and hence it is expected that the model will yield better estimations when applied to high pressure differential cases.

    Original languageBritish English
    Title of host publicationSociety of Petroleum Engineers - SPE Annual Technical Conference and Exhibition, ATCE 2023
    PublisherSociety of Petroleum Engineers (SPE)
    ISBN (Electronic)9781613999929
    DOIs
    StatePublished - 2023
    Event2023 SPE Annual Technical Conference and Exhibition, ATCE 2023 - San Antonio, United States
    Duration: 16 Oct 202318 Oct 2023

    Publication series

    NameProceedings - SPE Annual Technical Conference and Exhibition
    Volume2023-October
    ISSN (Electronic)2638-6712

    Conference

    Conference2023 SPE Annual Technical Conference and Exhibition, ATCE 2023
    Country/TerritoryUnited States
    CitySan Antonio
    Period16/10/2318/10/23

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