| Issue |
Sci. Tech. Energ. Transition
Volume 78, 2023
Characterization and Modeling of the Subsurface in the Context of Ecological Transition
|
|
|---|---|---|
| Article Number | 22 | |
| Number of page(s) | 17 | |
| DOI | https://doi.org/10.2516/stet/2023019 | |
| Published online | 29 August 2023 | |
Review Article
A simplified vertical and horizontal geomechanical model for compaction in sedimentary basins
1
IFP Energies nouvelles, 1 et 4 avenue de Bois-Préau, 92852 Rueil-Malmaison, France
2
CEA Cadarache, F-13108 Saint-Paul-Lez-Durance, France
* Corresponding author: francesco.patacchini@ifpen.fr
Received:
5
January
2023
Accepted:
18
July
2023
In the context of mechanical compaction in sedimentary basins, we introduce a simple model including lateral deformations with the goal to improve the results obtained under oedometric conditions (i.e., neglecting horizontal strains) without losing much computational time. The model is based on a modified vertical porosity-stress law where horizontal strains are inserted and on an elastic stress-strain law with stress-dependent Young modulus. Though it is not three-dimensional and does not involve plasticity, we manage to validate the model on a geometrically and lithologically complex test case by comparing our results with those obtained on the same case using a full-dimensional finite-element simulator. We conclude that our model offers a significant improvement in accuracy against an oedometric model, with little loss in computational time, and so provides a useful tool to users who want a quick insight into results before running longer and more accurate simulations.
Key words: Sedimentary basin / Mechanical compaction / Horizontal deformation / Geomechanical model / Finite-volume simulator
© The Author(s), published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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