Guillaume Caumon

Implicit modeling of folds and overprinting deformation

Publisher: Elsevier BV

Date: 12-2016

DOI: 10.1016/J.EPSL.2016.09.040

Multi‐scenario Interpretations From Sparse Fault Evidence Using Graph Theory and Geological Rules

Publisher: American Geophysical Union (AGU)

Date: 27-01-2021

DOI: 10.1029/2020JB020022

Seismic interpretation of fault-related deformation using a numerical kinematic model

Publisher: Society of Exploration Geophysicists

Date: 09-2016

DOI: 10.1190/SEGAM2016-13880830.1

Finite Difference Implicit Structural Modeling of Geological Structures

Publisher: Springer Science and Business Media LLC

Date: 15-09-2020

DOI: 10.1007/S11004-020-09887-W

A parametric fault displacement model to introduce kinematic control into modeling faults from sparse data

Publisher: Society of Exploration Geophysicists

Date: 05-2018

DOI: 10.1190/INT-2017-0059.1

Abstract: Fault-related displacements impact oil and gas flow predictions at reservoir scales. We have integrated a quantitative description of fault-related deformation directly embedded into the structural modeling workflow. Consistent fault displacements are produced using numerical fault operators that deform horizons in accordance with theoretical isolated fault displacement models to generate kinematically consistent structural models. We compare structural modeling approaches based on such fault operators with those relying on interpolation. Several synthetic cross sections are generated from a reference high-resolution structural model of the Santos Basin, Brazil. Models are reconstructed from this 2D synthetic sparse data set using both methods. Their ability to produce consistent structural models is assessed by comparing reconstructed and reference models. On this ex le, kinematic modeling improves the quality of automatically generated models when only few or poor-quality observations are available, thus reducing the time needed for structural validation.

Structural Interpretation of Sparse Fault Data Using Graph Theory and Geological Rules

Publisher: Springer Science and Business Media LLC

Date: 19-04-2019

DOI: 10.1007/S11004-019-09800-0

A parametric method to model 3D displacements around faults with volumetric vector fields

Publisher: Elsevier BV

Date: 04-2013

DOI: 10.1016/J.TECTO.2013.01.015

Structural data constraints for implicit modeling of folds

Publisher: Elsevier BV

Date: 11-2017

DOI: 10.1016/J.JSG.2017.09.013

3D geomodelling combining implicit surfaces and Voronoi-based remeshing: A case study in the Lorraine Coal Basin (France)

Publisher: Elsevier BV

Date: 04-2015

DOI: 10.1016/J.CAGEO.2015.01.009

Realistic modelling of faults in LoopStructural 1.0

Publisher: Copernicus GmbH

Date: 02-06-2021

DOI: 10.5194/GMD-2021-112

Abstract: Abstract. Without properly accounting for both fault kinematics and faulted surface observations, it is challenging to create 3D geological models of faulted geological units that are seen in all tectonic settings. Geometries where multiple faults interact, where the faulted surface geometry significantly deviate from a flat plane and where the geological interfaces are poorly characterised by sparse data sets are particular challenges. There are two existing approaches for incorporating faults into geological surface modelling: one approach incorporates the fault displacement into the surface description but does not incorporate fault kinematics and in most cases will produce geologically unexpected results such as shrinking intrusions, fold hinges without offset and layer thickness growth in flat oblique faults. Another approach builds a continuous surface without faulting and then applies a kinematic fault operator to the continuous surface to create the displacement. Both approaches have their strengths, however neither approach can capture the interaction of faults within complicated fault networks e.g fault duplexes, flower structures and listric faults because they either \\\\begin{inparaenum}[(1)] \\\\item impose an incorrect (not defined by data) fault slip direction or \\\\item require an over s led data set that describes the faulted surface location\\\\end{inparaenum}. In this study we integrate the fault kinematics into the implicit surface by using the fault kinematic model to restore observations and the model domain prior to interpolating the faulted surface. This approach can build models that are consistent with observations of the faulted surface and fault kinematics. Integrating fault kinematics directly into the implicit surface description allows for complex fault stratigraphy and fault-fault interactions to be modelled. Our approaches show significant improvement in capturing faulted surface geometries especially where the intersection angle between the faulted surface geometry and the fault surface varies (e.g. intrusions, fold series) and when modelling interacting faults (fault duplex).

Modelling of faults in LoopStructural 1.0

Publisher: Copernicus GmbH

Date: 15-10-2021

DOI: 10.5194/GMD-14-6197-2021

Abstract: Abstract. Without properly accounting for both fault kinematics and observations of a faulted surface, it is challenging to create 3D geological models of faulted geological units. Geometries where multiple faults interact, where the faulted surface geometry significantly deviate from a flat plane and where the geological interfaces are poorly characterised by sparse datasets are particular challenges. There are two existing approaches for incorporating faults into geological surface modelling. One approach incorporates the fault displacement into the surface description but does not incorporate fault kinematics and in most cases will produce geologically unexpected results such as shrinking intrusions, fold hinges without offset and layer thickness growth in flat oblique faults. The second approach builds a continuous surface without faulting and then applies a kinematic fault operator to the continuous surface to create the displacement. Both approaches have their strengths however, neither approach can capture the interaction of faults within complicated fault networks, e.g. fault duplexes, flower structures and listric faults because they either (1) impose an incorrect (not defined by data) fault slip direction or (2) require an over-s led dataset that describes the faulted surface location. In this study, we integrate the fault kinematics into the implicit surface, by using the fault kinematics to restore observations, and the model domain prior to interpolating the faulted surface. This new approach can build models that are consistent with observations of the faulted surface and fault kinematics. Integrating fault kinematics directly into the implicit surface description allows for complexly faulted stratigraphy and fault–fault interactions to be modelled. Our approach shows significant improvement in capturing faulted surface geometries, especially where the intersection angle between the faulted surface and the fault surface varies (e.g. intrusions, fold series) and when modelling interacting faults (fault duplex).

Assessing and reducing stratigraphic uncertainty in the subsurface: where are we standing?

Publisher: Copernicus GmbH

Date: 15-05-2023

DOI: 10.5194/EGUSPHERE-EGU23-15776

Abstract: Sedimentary strata are essential archives of the past conditions of the earth, and host significant natural resources in the subsurface. However, inferring the features of strata at depth (e.g., geometry, connectivity, physical or geological properties), remains a challenge prone to many uncertainties. Classically, the layers and their geometry are first interpreted from boreholes, geological outcrops and geophysical images, then layer properties can be addressed with geostatistical techniques and inverse methods. Theoretical models considering horizon depth uncertainty have been proposed decades ago, and geostatistical simulation can s le petrophysical uncertainties, but these approaches leave the number of layers fixed and are rely on conformable layering assumptions which are seldom met. We review some recent developments in well correlation in the frame of relative chronostratigraphy, which addresses the problem of locating potential gaps in the stratigraphic record. We also present some first results of the integration of the number of layers in inverse problems using a reversible jump Monte Carlo method. These two elements open interesting perspectives to jointly address topological, geometrical and petrophysical uncertainties at multiple scales in sedimentary basins. Although such uncertainties can have significant impact on quantitative geological and geophysical model forecasts, many computational challenges still lie ahead to appropriately s le uncertainties. Harnessing these challenges should open the way to finding, on a case-by-case basis, the suitable level of detail between detailed stratigraphic architectures and effective medium representations.

Interactive editing of 3D geological structures and tectonic history sketching via a rigid element method

Publisher: Elsevier BV

Date: 2015

DOI: 10.1016/J.CAGEO.2014.10.011

Institut Universitaire De France

Location: France

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Stanford University School Of Earth Sciences

Location: United States of America

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Universite De Lorraine - ENSG

Location: France

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Université De Lorraine

Location: France

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Linkage Projects - Grant ID: LP210301239

Start Date: 04-2023

End Date: 04-2026

Amount: $537,675.00

Funder: Australian Research Council

Linkage Projects - Grant ID: LP170100985

Start Date: 11-2018

End Date: 06-2024

Amount: $711,000.00

Funder: Australian Research Council