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Dorado findings exceed expectations

The second appraisal well drilled at the Dorado oil discovery has confirmed the presence of a significant hydrocarbon resource.

Joint venture (JV) partners Santos and Carnarvon Petroelum have reported the Dorado-2 appraisal well in the Bedout Basin, offshore northwest Western Australia, confirmed pre-drill expectations of a big find, with the well encountering high quality and productive reservoirs in each of its targets.

The well was drilled down-dip approximately 2 km from the Dorado-1 discovery and encountered 86 m of net reservoir in the primary Caley Formation.

At 4,003 m measured depth, oil-water contact was intersected, with 40 m of net oil pay encountered.

A further 32 m of net pay was encountered in the underlying Baxter and Milne sandstones, with these results likely to significantly increase the gas resources from pre-drill estimates.

Santos Managing Director and CEO Kevin Gallagher said indications were the discovery was larger than anticipated.

“The value of the discovery is greatly enhanced by the high-quality reservoirs and fluids, and the shallow-water setting, which should facilitate a cost-competitive development,” he said.

“Dorado opens a new basin with high prospectivity in permits where Santos has a high equity position and rich exploration inventory with potential to substantially grow the resource base.”

Mr Gallagher said the acquisition of a new seismic survey in the area would also help identify exploration opportunities.

The Dorado resource first made headlines last year after it was described as “staggering” upon discovery.

Following Dorado-2, the JV plans to drill the near-field exploration well Roc South-1, immediately after which the Dorado-3 appraisal well will be drilled.

Carnarvon possesses a 20 per cent interest in the project, while operator Santos holds the remaining 80 per cent after its 2018 purchase of Quadrant Energy.

For more information visit the Santos website.

If you have news you would like featured in The Australian Pipeliner contact Assistant Editor David Convery at dconvery@gs-press.com.au

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