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Reservoir characterisation of the Plover Sandstone, Browse Basin, using integrated core and wireline logs to extrapolate depositional lithofacies outside of well control and determine net to gross

Robert M Fedinetz

Master of Science  2010

University of Adelaide

Abstract

The Northwest Shelf of Australia is Western Australia’s largest producer of domestic gas. The shelf is comprised of four basins, the Northern Carnarvon, Offshore Canning, Bonaparte and Browse Basins. The Plover Sandstone is a gas-bearing Jurassic formation within the Browse currently it is a part of a joint exploration area venture between Shell Development Australia (SDA) and Woodside Ltd. The high costs of coring and drilling suggest the need for alternative methods of predicting depositional lithofacies outside of well control. This study uses existing core interpretations from the Brecknock-3, Calliance-1, Gorgonichthys-1, Ichthys-1A and Ichtys-2A ST2 wells to create a series of algorithms for wireline information to be tested against core interpretations of the Brecknock-2 well. From this, a higher net-to-gross cut-off is suggested relative to SDA’s (<50%Vsh). The results varying both in the accuracy of prediction as well as net-to-gross leaving, the opportunity for further research, such that a limited data set has been used as well as a minimal wireline interpretations.


Australian School of Petroleum
THE UNIVERSITY OF ADELAIDE

SA 5005 AUSTRALIA

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