Focus on Gulf of Mexico slide image

Focus on Gulf of Mexico

• Bivouac Peak 32 MMboe conventional gas/condensate prospect currently drilling Otto participating in drilling the high-impact Bivouac Peak gas/condensate prospect at 40% WI Bivouac Peak Regional Map - LA Transition Zone • 32 MMboe¹ high quality, amplitude supported conventional gas/condensate prospect in the highly productive Atchafalaya Bay transition zone of Southern Louisiana • • • • 18,294 ft MD/18,000 ft TVD well targeting upper and middle Miocene reservoirs in East Prospect will cost US$10.8m (100%) Drilling commenced late August 2018 and is expected to take approximately 75 days Estimated completion and development costs to bring a discovery into production are US$9-11 million with the well on production within 8-10 months from initial discovery Future follow up Bivouac Peak Deep prospect ~20,000 ft (TVD) in a success case - 13.4 MMboe¹ Otto to pay 53.33% to earn a 40% WI (up to a cap of US$5.33m then pro-rata) La Posada/La Cantera & Thunder Bayou >600 BCFE EUR (Cris R) 209 208 30 210 211 29 31 219 218 32 Dutch/Mary Rose: 430 Bef+7.5 MMbo Cum Prod 850 BCFE EUR 50 (Cib Op-Rob L) >15,000-16,500' 230 221 40 B 222 231 230 229 228 227 22 201 204 235 200 257 238 21 BYRONENERGY BIVOUAC PEAK BEST ESTIMATE PROSPECTIVE RESOURCES¹ Blanche Bay Eagles Nest Mt Moran N&S Atchafalaya Bay Deep: >100 Bcf +0.6 MMbo Cum Prod (Cib Op) >17,000-19,000' 31 32 Shell Island Bivouac Peak Little Bay Field: 45 Bcf +5 MMbo Cum Prod (Cris I-Cib Op) >16,000-18,000' (4 wells-90%) League Hay Prospect GROSS Oil Gas MMBOE (MMbbl) (Bscf) (6:1) Oil (MMbbl) OTTO 40% WI Gas MMBOE Oil OTTO 29.8% NRI Gas Joint Venture (Bscf) (6:1) (MMbbl) (Bscf) MMBOE (6:1) Otto Energy 40% East 11.3 125.6 32.2 4.5 50.2 12.9 3.4 37.4 Byron Energy (ASX:BYE) 9.6 Deep 4.7 52.1 13.4 1.9 20.9 5.3 1.4 15.5 4.0 [operator] 43% Total 16.0 177.7 45.6 6.4 71.1 18.2 4.8 52.9 13.6 Metgasco (ASX: MEL) 10% Private US Entity 7% 1 As at 30 June 2017. Refer Otto ASX release of 9 July 2018. 15 OTTO ENERGY | ASX: OEL Page 3
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