Towards the use of creeping flow restoration on more realistic geomodels

Melchior Schuh-senlis and Guillaume Caumon and Paul Cupillard and Cedric Thieulot. ( 2020 )
in: 2020 RING Meeting, ASGA

Abstract

Structural restoration is commonly used to assess the deformation of geological structures and to reconstruct past basin geometries. For this", geomechanical restoration considers faults as frictionless contact surfaces. To bring more physical behavior and better handle large deformations, we build on a reverse time Stokes-based method, previously applied to restore salt structures with negative time step advection. We test the applicability of the method to structures including sediments of variable viscosity, faults and non-flat topography. We present a simulation code that uses a combination of Arbitrary Lagrangian-Eulerian methods and Particle-In-Cells methods, and is coupled with adaptive refinement on the grid. It is used to apply the method on simple two-dimensional geological cross-sections and shows that reasonable restored geometries can be obtained.

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BibTeX Reference

@INPROCEEDINGS{SCHUHSENLIS_RM2020,
    author = { Schuh-senlis, Melchior and Caumon, Guillaume and Cupillard, Paul and Thieulot, Cedric },
     title = { Towards the use of creeping flow restoration on more realistic geomodels },
 booktitle = { 2020 RING Meeting },
      year = { 2020 },
 publisher = { ASGA },
  abstract = { Structural restoration is commonly used to assess the deformation of geological structures and to reconstruct past basin geometries. For this", geomechanical restoration considers faults as frictionless contact surfaces. To bring more physical behavior and better handle large deformations, we build on a reverse time Stokes-based method, previously applied to restore salt structures with negative time step advection. We test the applicability of the method to structures including sediments of variable viscosity, faults and non-flat topography. We present a simulation code that uses a combination of Arbitrary Lagrangian-Eulerian methods and Particle-In-Cells methods, and is coupled with adaptive refinement on the grid. It is used to apply the method on simple two-dimensional geological cross-sections and shows that reasonable restored geometries can be obtained. }
}