From {Paleoscan}'s relative geological time model to unstructured simulation mesh: {An} implicit modeling journey

Benjamin Pinet and Melchior Schuh-Senlis and Julien Razza and Arnaud Botella and Francois Bonneau and Pierre Anquez and Laurent Souche. ( 2024 )
in: Proc. 2024 RING Meeting, pages 9, ASGA

Abstract

Paleoscan's relative geological time, hereafter RGT, has proven its relevance in the context of structural and stratigraphic modeling based on seismic interpretation. However, the next step consisting of building a meshed model on which to run physical simulations is not straightforward. Indeed, such a spatial discretization calls for a precise definition of geological features in order to simulate both the fluid flow and the mechanical stress and deformation undergone by the rock masses. In this contribution, we combine Paleoscan’s interactive seismic interpretation tools with Geode’s meshing and modeling frameworks to open the path to multiphysics simulations. The workflow starts by integrating faults interpreted with Paleoscan to build watertight fault blocks using a robust insertion of surfaces inside a volumic mesh. Then, the RGT is upscaled and interpolated inside the fault blocks to ensure the consistency of the stratigraphic scalar field in each block. This process guarantees a unique and accurate property definition around internal and external block boundaries. The resulting combination of a watertight structural boundary representation and a single stratigraphic scalar field enables the use of Geode’s explicitation tools to create a boundary representation with meshed volumes. Finally, the mesh quality can be improved to meet the requirements of physical simulation software. The current paper illustrates the validity of the workflow on real case data.

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BibTeX Reference

@inproceedings{pinet_paleoscans_RM2024,
 abstract = {Paleoscan's relative geological time, hereafter RGT, has proven its relevance in the context of structural and stratigraphic modeling based on seismic interpretation. However, the next step consisting of building a meshed model on which to run physical simulations is not straightforward. Indeed, such a spatial discretization calls for a precise definition of geological features in order to simulate both the fluid flow and the mechanical stress and deformation undergone by the rock masses. In this contribution, we combine Paleoscan’s interactive seismic interpretation tools with Geode’s meshing and modeling frameworks to open the path to multiphysics simulations. The workflow starts by integrating faults interpreted with Paleoscan to build watertight fault blocks using a robust insertion of surfaces inside a volumic mesh. Then, the RGT is upscaled and interpolated inside the fault blocks to ensure the consistency of the stratigraphic scalar field in each block. This process guarantees a unique and accurate property definition around internal and external block boundaries. The resulting combination of a watertight structural boundary representation and a single stratigraphic scalar field enables the use of Geode’s explicitation tools to create a boundary representation with meshed volumes. Finally, the mesh quality can be improved to meet the requirements of physical simulation software. The current paper illustrates the validity of the workflow on real case data.},
 author = {Pinet, Benjamin and Schuh-Senlis, Melchior and Razza, Julien and Botella, Arnaud and Bonneau, François and Anquez, Pierre and Souche, Laurent},
 booktitle = {Proc. 2024 RING Meeting},
 language = {en},
 pages = {9},
 publisher = {ASGA},
 title = {From {Paleoscan}'s relative geological time model to unstructured simulation mesh: {An} implicit modeling journey},
 year = {2024}
}