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

Autor: Saverio Patacchini Francesco, Cacas-Stentz Marie-Christine, Maurand Nicolas, Saber-Cherif Walid, Willien Françoise
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Science and Technology for Energy Transition, Vol 78, p 22 (2023)
Druh dokumentu: article
ISSN: 2804-7699
DOI: 10.2516/stet/2023019
Popis: 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.
Databáze: Directory of Open Access Journals
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