Ref. DEA 14 Feb â18, BHP has waived its pre-emption rights over Woodsideâs agreement to acquire ExxonMobilâs 50% in the Scarborough gasfield, Carnarvon Basin off WA. The USD 744 MM deal will result in Woodside holding a 75% interest in WA-1-R (most of the field) and 50% in WA-61-R, WA-62-R + WA-63-R, BHP holding the balance (and pre-emptive rights). Woodside has not ruled out a farm-down at a later stage, and has granted BHP an option to purchase an additional 10% interest in Scarborough on equivalent consideration and terms to the Exxon deal. 
Australia (North Carnarvon B.) (It's a petroleum rights. Please summarize by yourself). In IHS database: WA-61-R op. by WOODSIDE (50.0%, BHP BILLIT 50.0%) to be check.WA-62-R op. by WOODSIDE (50.0%, BHP BILLIT 50.0%) to be check.WA-63-R op. by WOODSIDE (50.0%, BHP BILLIT 50.0%) to be check.