Session 3. Oral Presentation for: New perspectives on the sequence stratigraphy of the Early-Middle Triassic of the Bedout Sub-basin
Roisin McGee A *A
Roisin McGee is the Geoscience Manager at Carnarvon Energy. She holds a BSc in Geophysics from Leeds University, an MSc in Petroleum Geoscience from Imperial College London and an MBA from the University of Western Australia. Roisin began her career at Gaffney Cline and Associates in 2009 before joining Statoil as a geophysicist in Bergen, Norway. In 2013, she relocated to Perth and joined Carnarvon Energy, where she played a key role in the Bedout Joint Venture, contributing to all exploration wells. She is a committee member of PESA WA. |
Abstract
Presented on 27 May 2025: Session 3
The Bedout Sub-basin, part of the Roebuck Basin on Western Australia’s North West Shelf, has drawn interest since hydrocarbon discoveries at Roc, Dorado and Pavo. Despite these successes, the region remains underexplored. This study applies sequence stratigraphic analysis, well data and 3D seismic data to characterise the basin’s depositional history and hydrocarbon potential. A Wheeler diagram illustrates chronostratigraphic relationships, identifying key sequence stratigraphic play systems. Findings reveal a shallowing-upward trend from the Early to Middle Triassic, a new play system in Late Permian carbonates and highlight that the Archer reservoir sands are a series of low-stand deposits. These insights refine the Bedout Sub-basin’s stratigraphic framework and inform future exploration efforts.
To access the Oral Presentation click the link on the right. To read the full paper click here
Keywords: Archer, Bedout, Dorado, Early Triassic, Middle Triassic, sequence boundary, sequence stratigraphy, systems tracts, wheeler diagram.
Roisin McGee is the Geoscience Manager at Carnarvon Energy. She holds a BSc in Geophysics from Leeds University, an MSc in Petroleum Geoscience from Imperial College London and an MBA from the University of Western Australia. Roisin began her career at Gaffney Cline and Associates in 2009 before joining Statoil as a geophysicist in Bergen, Norway. In 2013, she relocated to Perth and joined Carnarvon Energy, where she played a key role in the Bedout Joint Venture, contributing to all exploration wells. She is a committee member of PESA WA. |
