BP has made its largest oil and natural gas discovery in 25 years off the coast of Brazil, it said Monday, in a potential big boost for the British company following its strategic shift away from renewable energy to refocus on fossil fuels.

BP is seeking to bolster oil and gas in its portfolio to regain investor confidence and revive underperforming shares.

BP has confirmed a significant hydrocarbon discovery at the Bumerangue prospect in the deep-water Santos Basin offshore Brazil. The exploration well, 1-BP-13-SPS, was drilled to a total depth of 5,855m and has revealed a promising hydrocarbon column in a high-quality pre-salt carbonate reservoir.