Montero, J.M., Colombera, L., Yuste, E. et al. (2 more authors) (2024) Assessing the impact of sedimentary heterogeneity on CO2 injection in fluvial meander-belt successions using geostatistical modelling informed by geological analogues. International Journal of Greenhouse Gas Control, 136. 104199. ISSN 1750-5836
Abstract
To optimize programmes of carbon capture and storage, it is crucial to understand how subsurface heterogeneity may control CO2 dispersal in sedimentary reservoir successions. It is therefore necessary to evaluate the impact of subsurface modelling techniques on predictions in lithological and petrophysical heterogeneity, and on resulting dynamic behaviours. In this study, alternative idealized, unconditional static models were created that incorporate different types of sedimentary heterogeneities typical of fluvial meander-belt sedimentary successions, at different scales. These static models were produced using two different geostatistical algorithms based on multipoint statistics: SNESIM and DEESSE. Two alternative sets of geocellular grids were created that capture (i) macroscale levels of heterogeneity only (architectural elements) and (ii) both macro- and mesoscale (point-bar lithologies) heterogeneities, respectively. The geocellular models were populated with petrophysical data from a selected geological analogue (Barracouta Formation, Australia), imposing a depth-related trend based on the analysis of literature data. Porosity and permeability models were obtained via Gaussian random function simulations. These static models were used to simulate subsurface CO2 injection over a 30-year period to enable tracking of plume propagation and a comparison between models incorporating different levels of facies heterogeneity. The study highlights the influence of the underlying facies framework on CO2 dynamic simulations, since aspects of reservoir pressure redistribution and caprock pressure relief only emerge from models incorporating mesoscale features. Furthermore, predicted CO2 plume displacement, injection rates and cumulative injected volumes are also affected by the facies-modelling approach. Modelling categories and strategies must be carefully selected in subsurface modelling workflows applied to plan CCS projects.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2024 The Authors. This is an open access article under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. |
Keywords: | Meandering fluvial system; Facies modelling; Multi-point statistics; Dynamic simulation; Carbon capture; CCS |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Geography (Leeds) The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Institute for Applied Geosciences (IAG) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 09 Aug 2024 11:01 |
Last Modified: | 09 Aug 2024 11:01 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.ijggc.2024.104199 |
Sustainable Development Goals: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:215900 |