Field Hydrocarbon 1C 2C 3C Vesta – (Spec Di) Gas (Bcf) 39 105 199 Oil (MMbbl) 10 30 47 Swan – (Puffin) Gas (Bcf) 132 171 211 Oil (MMbbl) 3 4 5 Rec Gas Arithmetic Totals Gas (Bcf) 171 276 410 Rec Oil Arithmetic Totals Oil (MMbbl) 13 34 53 Table 1 – AC/P70 gross un-risked Contingent Resource Summary Prospect Hydrocarbon Pg Mean Low 1U Best 2U High 3U Vesta Deep (Plover) Gas (Bcf) 16% 338 71 231 730 Vesta North (Spec Di) (Gas Cap on Oil rim) Gas (Bcf) 42% 200 116 195 287 Oil (MMbbl) 42% 45 22 43 71 Swan Deep (Spec Di) Gas (Bcf) 23% 222 112 206 352 Swan Deep (Plover) Gas (Bcf) 16% 143 55 126 253 Swan North-West Gas (Bcf) 44% 198 155 196 243 East Swan Deep (Triassic) Gas (Bcf) 18% 702 200 569 1397 East Swan Deep (Permian) Gas (Bcf) 24% 1402 337 1231 2695 Rec Gas Arithmetic Totals Gas (Bcf) 3205 1046 2754 5957 Rec Oil Arithmetic Totals Oil (MMbbl) 45 22 43 71 Table 2 – AC/P70 gross un-risked Prospective Resource Summary WA-552-P (Melbana 100%) During the period the Company was granted petroleum permit WA-552-P10, located offshore Western Australia in the Dampier Sub-basin of the Northern Carnarvon basin (See Figure 9). The permit was applied for under the 2022 Offshore Petroleum Exploration Acreage Release and Melbana was one of only five companies to be awarded a new permit, with the other four all being major oil and gas companies. The permit was granted for an initial six-year period, with the primary term (first three years) work commitments comprising only desktop studies. Progressing beyond the primary term is at Melbana’s election. The permit area contains several small oil discoveries including Tusk, Okapi, Brocket, Oryx and Chamois and is immediately to the west of the Stag oil field, which has been producing oil since 1998. Melbana’s exploration thesis is that the Dampier Sub-basin may share a similar geological history to the Canning Basin, Petrel and Vulcan Sub-basins by way of salt seal deposition and carbonate reservoir architecture. The Company has been actively pursuing such plays in association with salt tectonics in its other exploration permits, WA-544-P and NT/P87. 10 See ASX announcement dated 19 September 2024. Directors’ Report continued 20 Melbana Energy Limited Annual Report 2025
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