Santos has picked up a 45% stake in retention lease WA-55-R, 139 sq km in the N, Carnarvon Basin, partly owed to the withdrawal of previous 20% holder Harriet (Onyx) Pty Ltd. Â Quadrant (op) 55%, partner Santos 45%.Â  
Santos acquired a 45% in retention lease WA-55-R from Quadrant NW and partly from the withdrawal of previous holder Harriet (Onyx) (-> 55%). 