ORCID Profile
0000-0003-0638-3391
Current Organisations
Monash University
,
Université d'Orléans
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Stochastic Analysis and Modelling | Structural Geology | Geology | Geophysics not elsewhere classified
Environmental and Natural Resource Evaluation not elsewhere classified | Mineral Exploration not elsewhere classified | Primary Mining and Extraction of Mineral Resources not elsewhere classified |
Publisher: Elsevier BV
Date: 12-2016
Publisher: Elsevier BV
Date: 09-2019
Publisher: American Geophysical Union (AGU)
Date: 27-01-2021
DOI: 10.1029/2020JB020022
Publisher: Society of Exploration Geophysicists
Date: 09-2016
Publisher: Springer Science and Business Media LLC
Date: 15-09-2020
Publisher: Elsevier BV
Date: 04-2013
Publisher: American Geophysical Union (AGU)
Date: 08-2018
DOI: 10.1029/2017JB015177
Publisher: Copernicus GmbH
Date: 13-07-2017
Publisher: Elsevier BV
Date: 11-2017
Publisher: Society of Economic Geologists
Date: 2014
DOI: 10.5382/SP.18.13
Publisher: Copernicus GmbH
Date: 15-10-2021
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).
Publisher: Elsevier BV
Date: 05-2022
Publisher: Elsevier BV
Date: 2015
Publisher: Copernicus GmbH
Date: 23-03-2020
DOI: 10.5194/EGUSPHERE-EGU2020-20819
Abstract: & & Implicit geological modelling allows for observations of surface location and orientation to be interpolated into continuous 3D surfaces. These surfaces are usually built by finding a function that minimises the misfit between the surface and observations (gradient or value of the implicit function) combined with a regularisation constraint that controls how the surface develops between observations. When modelling complex terranes such as fold series, fault networks or intrusions it is usually necessary to use interpretive constraints for creating the expected geometries. These interpretations are problematic, as the constraints are usually not observations but realisations of the geologists& #8217 subjective interpretation, and are therefore difficult to change and interrogate to better understand the geometry. Recent developments for implicit modelling of folds and faults have built new local coordinate systems using the structural geology of the object being modelled and are termed structural frames. For ex le, for folds, the structural frame is aligned to the axial surface of the fold and fold axis. For faults, the structural frame is aligned to the fault surface and slip direction. Using structural frames, conceptual models of the fold and fault geometries can be combined with the observations of the surfaces. This means that rather than using the geologists' subjective interpretation to constrain the model geometries, the conceptual model can guide the interpolation where observations are missing. Geological uncertainties in the resulting geometries can be assessed by framing the modelling as an inverse problem and varying the conceptual model parameters to fit the geological observations. In this contribution, we review the use of structural frames for constraining 3D geometry of structurally complex terranes and provide an ex le of a faulted fold series.& &
Publisher: Copernicus GmbH
Date: 07-10-2020
Publisher: Copernicus GmbH
Date: 29-06-2021
Abstract: Abstract. In this contribution we introduce LoopStructural, a new open-source 3D geological modelling Python package (www.github.com/Loop3d/LoopStructural, last access: 15 June 2021). LoopStructural provides a generic API for 3D geological modelling applications harnessing the core Python scientific libraries pandas, numpy and scipy. Six different interpolation algorithms, including three discrete interpolators and 3 polynomial trend interpolators, can be used from the same model design. This means that different interpolation algorithms can be mixed and matched within a geological model allowing for different geological objects, e.g. different conformable foliations, fault surfaces and unconformities to be modelled using different algorithms. Geological features are incorporated into the model using a time-aware approach, where the most recent features are modelled first and used to constrain the geometries of the older features. For ex le, we use a fault frame for characterising the geometry of the fault surface and apply each fault sequentially to the faulted surfaces. In this contribution we use LoopStructural to produce synthetic proof of concepts models and a 86 km × 52 km model of the Flinders Ranges in South Australia using map2loop.
Publisher: Copernicus GmbH
Date: 09-07-2019
Publisher: Springer Science and Business Media LLC
Date: 19-04-2019
Publisher: Society of Exploration Geophysicists
Date: 05-2018
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.
Publisher: Springer Science and Business Media LLC
Date: 14-06-2016
Publisher: WIT Press
Date: 11-09-2018
DOI: 10.2495/BE410171
Publisher: Elsevier BV
Date: 04-2015
Publisher: Elsevier BV
Date: 02-2019
Publisher: EAGE Publications BV
Date: 23-05-2011
Start Date: 04-2023
End Date: 04-2026
Amount: $537,675.00
Funder: Australian Research Council
View Funded Activity