Chevron secured retention lease WA-87-R, 160 sq km on the Exmouth Plateau, N. Carnarvon Basin, on 2 Mar â18 for 5 years.Â  It contains the 2015 Isosceles gas discovery in former WA-374-P which has been correspondingly reduced. Chevron (op), partners Shell + ExxonMobil. 
Chevron (50% + Op., Shell 25%, ExxonMobil 25%) was awarded retention lease WA-87-R.