Authors / CoAuthors
Schenk, O. | Grosjean, E. | Edwards, D. | Boreham, C. | West, T. | Karvelas, A.
Abstract
The Otway Basin is a broadly northwest-southeast trending basin and forms part of a rift system that developed along Australia’s southern margin. It represents an established hydrocarbon province with mostly onshore and shallow-water offshore discoveries. However, the outboard deep-water Otway Basin, with water depths up to 6300 m, is comparatively underexplored and can be considered a frontier area. Following the completion of a basin-wide seismic depth-imaging program (Part 1; Lee et al 2021) and insights from the revised seismic interpretation (Part 2; Karvelas et al. 2021), we have developed a comprehensive petroleum system modelling (PSM) study by integrating these data and findings (Part 3). Together the studies have resulted in an improved understanding of the hydrocarbon prospectivity of the deep-water areas of the basin. Given the sparsity of data outboard, almost all legacy petroleum system modelling studies have been focused either on the onshore or shallow-water areas of the basin and primarily on their thick Lower Cretaceous depocentres. The limitations of legacy seismic datasets resulted in a high degree of uncertainty in the derivative interpretations used as input into PSM studies. In addition, the paucity and poor quality of data in the deep-water area reduced confidence in the understanding of the basin evolution and spatial distribution of depositional environments through time. The newly acquired 2D seismic survey and reprocessed legacy data, with calibration via several wells across the basin, has improved confidence in our understanding of the tectonostratigraphic evolution of the basin (Part 2; Karvelas et al. 2021). The study presented herein integrates products from the work in Part 2 into a petroleum system model with the primary objective being to better understand the petroleum systems across the deep-water Otway Basin.
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document
eCat Id
145277
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
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Keywords
- theme.ANZRC Fields of Research.rdf
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- EARTH SCIENCES
- ( Theme )
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- Petroleum system modelling
- ( Place )
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- Otway Basin
- ( Theme )
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- Austral Supersystem
- ( Theme )
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- Thermal history
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- hydrocarbon prospectivity
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- Published_External
Publication Date
2024-02-22T00:34:51
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Extended Abstract for APPEA 2021
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geoscientificInformation
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The APPEA Journal Volume 61 (2) - Conference Proceedings, 2021 665-672
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Extended Abstract for APPEA 2021
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