Article Dans Une Revue Science and Technology for Energy Transition Année : 2023

A simplified vertical and horizontal geomechanical model for compaction in sedimentary basins

Résumé

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.
Fichier principal
Vignette du fichier
A_Simplified_Vertical.pdf (1.79 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte
Licence

Dates et versions

hal-04387433 , version 1 (11-01-2024)

Licence

Identifiants

Citer

Francesco Saverio Patacchini, Marie-Christine Cacas-Stentz, Nicolas Maurand, Walid Saber-Cherif, Françoise Willien. A simplified vertical and horizontal geomechanical model for compaction in sedimentary basins. Science and Technology for Energy Transition, 2023, 78, pp.22. ⟨10.2516/stet/2023019⟩. ⟨hal-04387433⟩

Collections

CEA IFP
59 Consultations
18 Téléchargements

Altmetric

Partager

More