Investor Presentaiton

DBO Assets - Peroá, Cangoá and Malombé (15% indirect working interest) Key takeaways • The Peroá gas cluster is located in the Espírito Santo basin, offshore Brazil in shallow waters Key stats¹ (net DBO) Field overview and key field statistics² 2.9 mmboe Net 2P reserves (YE'21) Location & Basin Espírito Santo Type: Offshore Brazil Concession Term: Partners: USD 23 million (YE'22) Offtaker: 2025 (extendable by 27 years) 3R Petroleum (OP,85%) and DBO (15%) Petrobras Recovered Gas: 72.4% / 65.6 mmboe • • The Peroá cluster includes the Peroá and Cangoá producing fields and the Malombé discovery • Malombé is considered to be tied back to the Peroá platform in the future and could add an estimated production of 16 kboepd (gross) at peak Peroá platform has available capacity for Malombé with limited additional CAPEX Approximately 72.4% gas has been recovered and remaining 2P reserves are estimated to 19 mmboe gross per year-end 2022 The cluster has a 55km gas pipeline connection to the Cacimbas gas processing plant (operated by Petrobras) and has an unmanned platform with an OPEX of approximately USD 5/boe Brazil is a net importer of gas, with LNG being the marginal source of supply Net 2P NPV10 USD 36 million Cumulative net cash flow 2023-2030 ~523 boepd Net production Oct 2022 1) Based on public reserve reports from Gaffney Cline and Institutional Presentation, 3R Petroleum, August 2022. Value and cash flow estimates are based on a gas price of USD 5.0-5.5/mcf and are net of contingent payments. 2) Institutional Presentation, 3R Petroleum, August 2022 13 Peroá Cluster PPER-1 25m 50m UTGC Pólo Cacimbas PEROÁ CANGOA 100m 500m PPER-1 15km ESS-206 PEROÁ CANGOÁ ESS 67 ESS-77 8582 PER-3 PER-1 ESS-105 99A BM-ES-21 PETROBRAS 89.89% REPSOL 11.11% 10k Ring Fence Exploration Block PAD 1-ESS-206 MALOMBE 80 2 miles MAHA ENERGY

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