Santos Ltd completed the acquisition of 45% interest in four of Quadrant Energyâs North Carnarvon permits on 21 December 2017.Â  Santos has acquired the interest in retention leases WA-43-R and WA-50-R and exploration permits WA-499-P and WA-501-P. The retention leases both cover areas of 80 sq km and cover part of the Rosella gas discovery that was made in 2007.Â  WA-501-P contains the Libris sub-commercial oil discovery that was made in 2007. WA-501-P covers an area of 81 sq km, while WA-499-P covers an area of 1,558 sq km. Santos Ltd has acquired interest in four of Quadrant Energyâs permits.Â  In WA-43-R and WA-50-R interests are split between Quadrant Northwest Pty Ltd (55% + Operator) and Santos (BOL) Pty Ltd (45%).Â  In WA-499-P and WA-501-P interests are held by Quadrant Northwest Pty Ltd (55% + Operator) and Santos Offshore Pty Ltd (45%).Â  
Australia (North Carnarvon B.) ? op. by QUADRANT E (55.0%, SANTOS 45.0%) in WA-499-P block