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Towards an integrated restoration/forward geomechanical modelling workflow for basin evolution prediction

Anthony J.L. Crook, Joshua Obradors-Prats, Deniz Somer, Djordje Peric Orcid Logo, Pete Lovely, Marek Kacewicz

Oil & Gas Sciences and Technology – Revue d’IFP Energies nouvelles, Volume: 73, Start page: 18

Swansea University Author: Djordje Peric Orcid Logo

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DOI (Published version): 10.2516/ogst/2018018

Abstract

Many sedimentary basins host important reserves of exploitable energy resources. Understanding of the present-day state of stresses, porosity, overpressure and geometric configuration is essential in order to minimize production costs and enhance safety in operations. The data that can be measured f...

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Published in: Oil & Gas Sciences and Technology – Revue d’IFP Energies nouvelles
ISSN: 1294-4475 1953-8189
Published: 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa40972
first_indexed 2018-07-11T13:33:40Z
last_indexed 2018-09-11T18:55:24Z
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spelling 2018-09-11T14:00:42.8015290 v2 40972 2018-07-11 Towards an integrated restoration/forward geomechanical modelling workflow for basin evolution prediction 9d35cb799b2542ad39140943a9a9da65 0000-0002-1112-301X Djordje Peric Djordje Peric true false 2018-07-11 ACEM Many sedimentary basins host important reserves of exploitable energy resources. Understanding of the present-day state of stresses, porosity, overpressure and geometric configuration is essential in order to minimize production costs and enhance safety in operations. The data that can be measured from the field is, however, limited and at a non-optimal resolution. Structural restoration (inverse modelling of past deformation) is often used to validate structural interpretations from seismic data. In addition, it provides the undeformed state of the basin, which is a pre-requisite to understanding fluid migration or to perform forward simulations. Here, we present a workflow that integrates geomechanical-based structural restoration and forward geomechanical modelling in a finite element framework. The geometry and the boundary kinematics derived from restoration are used to automatically create a forward geomechanical model. Iterative correction may then be performed by either modifying the assumptions of the restoration or modifying the restoration-derived boundary conditions in the forward model. The methodology is applied to two problems; firstly, a sand-box scale benchmark model consisting of sand sediments sliding on silicon leading to the formation of a graben structure; secondly, a field-scale thrust-related anticline from Niger Delta. Two strategies to provide further constraint on fault development in the restoration-derived forward simulation are also presented. It is shown that the workflow reproduces the first order structural features observed in the target geometry. Furthermore, it is demonstrated that the iterative approach provides improved understanding of the evolution and additional information of current-day stress and material state for the Niger Delta Case. Journal Article Oil & Gas Sciences and Technology – Revue d’IFP Energies nouvelles 73 18 1294-4475 1953-8189 31 12 2018 2018-12-31 10.2516/ogst/2018018 COLLEGE NANME Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM Swansea University 2018-09-11T14:00:42.8015290 2018-07-11T09:35:06.7751164 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering Anthony J.L. Crook 1 Joshua Obradors-Prats 2 Deniz Somer 3 Djordje Peric 0000-0002-1112-301X 4 Pete Lovely 5 Marek Kacewicz 6 0040972-11072018093741.pdf crook2018.pdf 2018-07-11T09:37:41.2000000 Output 4870036 application/pdf Version of Record true 2018-07-11T00:00:00.0000000 true eng
title Towards an integrated restoration/forward geomechanical modelling workflow for basin evolution prediction
spellingShingle Towards an integrated restoration/forward geomechanical modelling workflow for basin evolution prediction
Djordje Peric
title_short Towards an integrated restoration/forward geomechanical modelling workflow for basin evolution prediction
title_full Towards an integrated restoration/forward geomechanical modelling workflow for basin evolution prediction
title_fullStr Towards an integrated restoration/forward geomechanical modelling workflow for basin evolution prediction
title_full_unstemmed Towards an integrated restoration/forward geomechanical modelling workflow for basin evolution prediction
title_sort Towards an integrated restoration/forward geomechanical modelling workflow for basin evolution prediction
author_id_str_mv 9d35cb799b2542ad39140943a9a9da65
author_id_fullname_str_mv 9d35cb799b2542ad39140943a9a9da65_***_Djordje Peric
author Djordje Peric
author2 Anthony J.L. Crook
Joshua Obradors-Prats
Deniz Somer
Djordje Peric
Pete Lovely
Marek Kacewicz
format Journal article
container_title Oil & Gas Sciences and Technology – Revue d’IFP Energies nouvelles
container_volume 73
container_start_page 18
publishDate 2018
institution Swansea University
issn 1294-4475
1953-8189
doi_str_mv 10.2516/ogst/2018018
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering
document_store_str 1
active_str 0
description Many sedimentary basins host important reserves of exploitable energy resources. Understanding of the present-day state of stresses, porosity, overpressure and geometric configuration is essential in order to minimize production costs and enhance safety in operations. The data that can be measured from the field is, however, limited and at a non-optimal resolution. Structural restoration (inverse modelling of past deformation) is often used to validate structural interpretations from seismic data. In addition, it provides the undeformed state of the basin, which is a pre-requisite to understanding fluid migration or to perform forward simulations. Here, we present a workflow that integrates geomechanical-based structural restoration and forward geomechanical modelling in a finite element framework. The geometry and the boundary kinematics derived from restoration are used to automatically create a forward geomechanical model. Iterative correction may then be performed by either modifying the assumptions of the restoration or modifying the restoration-derived boundary conditions in the forward model. The methodology is applied to two problems; firstly, a sand-box scale benchmark model consisting of sand sediments sliding on silicon leading to the formation of a graben structure; secondly, a field-scale thrust-related anticline from Niger Delta. Two strategies to provide further constraint on fault development in the restoration-derived forward simulation are also presented. It is shown that the workflow reproduces the first order structural features observed in the target geometry. Furthermore, it is demonstrated that the iterative approach provides improved understanding of the evolution and additional information of current-day stress and material state for the Niger Delta Case.
published_date 2018-12-31T07:17:55Z
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