PTTEP Project Details and Financial Performance

Projects Details | Rest of the World PTTEP Project Name Status Phase 1 PTTEP Australasia OP Exploration PTTEP Participating Interest* (%) Sales Vol Gas (MMSCFD) Sales Vol Liquid (KBPD) 90%-100% 2 Mozambique Area 1 JV § Development PTTEP 8.5% TotalEnergies, Mitsui, 26.5%,20% ENH, OVL 15%, 10% Latest Status Cash Maple (AC/RL7): Defining proper direction in order to increase development opportunities Tenacious (AC/RL4) and Oliver (AC/RL12): Well abandonment in progress The project is still under Force Majeure and suspension The current security situation has improved greatly and more manageable Plan to resume construction activities after security and safety restored OVRL & Oil India, 10%, 10% Bharat 3 Algeria 433a & 416b JOC Production 17 ** GBRS 35% On-going drilling activities (Bir Seba) PetroVietnam 40% Continue produce new wells and intervention existing wells. Sonatrach 25% 4 Algeria Hassi Bir Rekaiz OP Production 9 GHBR 49% On-going well performance evaluation & subsurface study Sonatrach 51% 5 Mariana Oil Sands ho OP Exploration PTTEP 100% (Canada) Reclamation activities in progress to return the area to Canadian government Note: * PTTEP denotes respective PTTEP subsidiaries participating in the project Sales volume represent average volume for 100% of the project during 3M2023 except for Algeria 433a & 416b (production volume) Status: OP PTTEP operatorship / JOC = PTTEP joint operatorship/ JV = PTTEP Joint Venture Partner 40 40

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