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oa Hydro-Mechanical Modelling of CO2 Mineralisation Pilot Tests in Oman and the UAE to Characterise Flow Paths
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, World CCUS Conference 2025, Sep 2025, Volume 2025, p.1 - 5
Abstract
CO2 mineralisation in peridotite formations offers a promising approach for durable and secure CO2 sequestration. However, modelling fluid flow in fractured peridotites can be challenging due to heterogeneity and stress-dependent permeability.
This study presents results from two pilot injection tests in the UAE and Oman, demonstrating fracture network responses to variable injection pressures. Electromagnetic surveys and wireline well logging data were used to initialise fracture permeability in reservoir models for both sites. Additionally, stress-dependent permeability was incorporated to account for variations with injection pressure.
The models were calibrated against field data from the injection tests, revealing that a broad range of injection pressures is necessary for comprehensive assessment. Notably, the simulated water plume closely aligned with time-lapse electromagnetic survey results, adding more confidence in the modelling approach for fluid flow in fractured peridotites.