Page published April 2026

Summary

The geochemical results from a recent production test in the Triassic section at Kiwi 1 in the Cooper Basin, potentially indicate the presence of an anomalous hydrocarbon source rock. A relatively low pristane/phytane ratio and pour point contrast with higher ratios and pour points typical of Permian source rocks.

A quick-look core and seismic study combined with geochemistry has identified a potential source set up by compression-related piggybacking and relative sea level rise resulting in the development of a genetically distinct sub-basin. This study provides a framework for understanding the development of this potentially distinct sub-basin, source, and play.

The play was defined by S Tiainen and published at the AEGC conference in Perth, September 2025.

Bass Oil Limited have adopted the play concept and have undertaken further technical work identifying “follow up structural features to the north and south of the Kiwi gas discovery”.

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