I think the Brazilian numbers for Mopane should be higher. If Galp is drilling more wells successfully there (4 wells are planned, starting this year already as Galp announced) , the price will go up because these wells derisk Mopane. And this Petrobras offer is "just" the first offer for Mopane.
Here is an article with higher numbers (Namibia is analog to Guyana): ...Liza is the world’s biggest oil discovery in a generation. Exxon controls a block that holds 11 Bbbl of recoverable oil, worth nearly $1 trillion at current prices. The find has transformed Guyana from one of South America’s poorest countries into one that will pump more crude per person than Saudi Arabia or Kuwait by 2027. Guyana is on track to overtake Venezuela as South America’s second-largest oil producer, after Brazil....
A personalised tool to help users track selected stocks. Delivering real-time notifications on price updates, announcements, and performance stats on each to help make informed investment decisions.
(20min delay)