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Roebuck Basin Regional Geology

Regional Geology of the Roebuck Basin

The Roebuck Basin is largely underexplored; however, it has experienced recent exploration success with the discovery of oil at Phoenix South 1 and gas at Roc 1 in the Bedout Sub-basin. Exploration is continuing within the basin, and the existence of an active petroleum system has been proven in the Bedout Sub-basin and future production is likely. Current 3C contingent resources for the Bedout Sub-basin, based only on the resource assessments for Phoenix 1, Phoenix South 1 and Roc 1, are estimated at 78 MMbbls of crude oil, 18 MMbbls of condensate, and 372 Bcf of gas (DeGolyer and MacNaughton, 2015; Carnarvon Petroleum Ltd, 2016a).








Figures

Figure 1

Structural elements of the Roebuck Basin, showing petroleum fields and the locations of seismic sections shown in Figures 6, 7 and 8


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Figure 2

Petroleum fields and well locations in the Roebuck Basin, highlighting new wells


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Figure 3

Residual Bouguer satellite gravity data for the Roebuck Basin. Data is from the DNSC08GRA satellite altimetry derived gravity dataset (Andersen et al, 2010)


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Figure 4

Stratigraphy and hydrocarbon discoveries of the Roebuck Basin and stratigraphy of the offshore Canning Basin, based on stratigraphy charts in Totterdell et al (2014). Geological time scale after Gradstein et al (2012)


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Figure 5

Exploration permits and operators in the Roebuck Basin and surrounds


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Figure 6

Seismic line s120/01 across the Roebuck Basin and Argo Abyssal Plain. Interpretation by Geoscience Australia. Location of the seismic section is shown in Figure 1


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Figure 7

Seismic line s120/04 across the Beagle, Rowley and Bedout sub-basins, and Broome Platform. Interpretation by Geoscience Australia. Location of the seismic section is shown in Figure 1


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Figure 8

Seismic line s120/07 across the Beagle and Rowley sub-basins. Interpretation by Geoscience Australia. Location of the seismic section is shown in Figure 1


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Figure 9

Marine reserves, marine parks, multiple use zones, ecological features and the 2016 Acreage Release Areas in the Roebuck and offshore Canning basins


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