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Titre4D rift analysis for the Jeanne d'Arc Basin using inverse basin-modelling
AuteurBaur, F; Jauer, C; Wielens, H; Littke, R; Fuchs, T
SourceCentral Atlantic Conjugate Margins Conference -- Halifax 2008, program and extended abstracts; par Brown, D E (éd.); 2008 p. 279-285
LiensConference Program and Extended Abstracts (PDF, 269 MB)
Séries alt.Secteur des sciences de la Terre, Contribution externe 20080513
Mediaen ligne; numérique
ProvinceRégion extracotière de l'est
Lat/Long OENS-49.4528 -48.1761 46.9394 46.0000
Sujetsflux thermique; affaissement; compaction; maturation; maturation thermique; bassins; établissement de modèles; historique de l'enfouissement; temperature; décrochement horizontal; Bassin de Jeanne D'arc ; Puit Hebron I-13 ; Puit Whiterose L-61 ; géologie marine; sédimentologie; tectonique; Trias
ProgrammeSécurité de l'approvisionnement énergétique du Canada
Résumé(disponible en anglais seulement)
The study provides for the first time a full 4D (space and time) analysis of heat flow-, subsidence-, maturation- and compaction history for the Jeanne d' Arc basin, located offshore Newfoundland. The Jeanne d'Arc basin is a typical failed rift basin, whose development and burial history is based on crustal thinning processes Therefore, the basin is an ideal place to quantify and verify rift-related processes such as heat flow history depending on the magnitude of the stretching of the crust and other factors. The study compares the results of simulated geological and geophysical processes and their mutual effects for variations of the McKenzie approach, mostly related to the stretching behavior of the upper mantle. These assumptions have been applied to a 4D numerical basin model extending from the Port au Port area in the south to the Adolphus area in the north in the Jeanne d'Arc basin. The model was simulated with a software package PetroMod® , developed by Integrated Exploration Systems. Additionally, a special workaround has been applied to simulate not only single rift events but also multiple-sequence rift events. The simulation technique uses an inverse approach with respect to the traditional McKenzie approach and is called advanced McKenzie approach. Based on the known burial history, the tectonic subsidence is 280 calculated by back-stripping and decompaction. In a second step, the stretching factors can be determined by adjusting them to fit the tectonic subsidence. Lastly, the heat flow history can be calculated based on the calculated stretching factors. The 4D regional Jeanne d'Arc basin model uses the results of over 45 individual 1D models (well locations) and calibration data from 61 wells. Thus, the study of the Jeanne d'Arc basin quantifies the impacts of diverse rift- and heat flow scenarios on the basin based on a nonsteady-state finite-element simulation.