Spectrum’s Paolo Esestime, Karyna Rodriguez and David Eastwell perform a regional seismic facies reconnaissance study over the Paleogene and Neogene sequences, using broadband 3D seismic, to support the viability for hydrocarbon exploration of Cenozoic plays in the Browse and Bonaparte basins. Based on a recent article for Offshore Magazine.
The Paleogene and Neogene intervals and sedimentary patterns are poorly documented and largely overlooked from the hydrocarbon exploration in the North West Shelf of Australia. However, the Pituri 1 well encountered minor oil within the Eocene Grebe Sandstone in the Bonaparte Basin, and in the Pollard 1 well minor fluorescence was observed in basal Miocene cuttings, indicating viable hydrocarbon plays at these stratigraphic levels.
In 2015, Spectrum’s Multi-Client seismic survey, Cartier Main 3D, was reprocessed through a “broadband workflow”, including effective de-ghosting techniques and pre-stack time and depth migrations, achieving a significant imaging uplift. The 3D covers approximately 2,800 sq.km on the eastern side of the Ashmore Platform, between the Browse and Bonaparte Basins. The reprocessing enhanced structural and stratigraphic elements at different levels, such as deep Permian carbonate build-ups and Triassic horst blocks. In the overburden section, the stratigraphic detail of the Paleogene and Neogene sections, has allowed a deeper understanding of their evolution through time.
This article uses Spectrum’s Cartier Main 3D to assess the sedimentary patterns and hydrocarbon plays Offshore Australia to support the viability for hydrocarbon exploration of Cenozoic plays in the Browse and Bonaparte basins. Thanks to the high quality 3D seismic data available this study was able to reveal potential traps by spectral decomposition. With all the other elements of the petroleum system in place, new Tertiary play types at the edge of the Ashmore Platform and Vulcan sub-basin are set to become viable future exploration targets.
Read the article here: Offshore Magazine: Reprocessed survey reveals potential play in the Bonaparte basin (external link)
…or download via the link below:
Paolo Esestime, Karyna Rodriguez and David Eastwell – Paleogene-Neogene sedimentary patterns and hydrocarbon plays – Offshore Australia