On 8 April 2016, Santos announced the successful completion of the Quokka-1 appraisal well, which has further delineated the high-quality Nanushuk reservoir in the Quokka Unit on Alaska’s North Slope. Santos controls a 51 per cent operating interest in the unit, with Repsol controlling the remaining 49 per cent.
The Quokka-1 well was spudded on 1 January 2026 and drilled to a total depth of 4,787 feet (1,459 metres). The well successfully encountered a high-quality reservoir with approximately 143 feet of net oil pay in the Nanushuk formation, demonstrating an average porosity of 19 per cent.









