PTTEP Project and Financial Overview

Projects Details | Rest of the World Project Name Status Phase 1 PTTEP Australasia (PTTEP AA) Participating Interest* (%) Sales Vol Gas (MMSCFD) Sales Vol Liquid (KBPD) OP Exploration PTTEP 90%-100% 2 Mozambique Area 1 JV Development PTTEP 8.5% TotalEnergies, Mitsui, 26.5%,20% ENH, OVL 15%, 10% OVRL & Oil India, 10%, 10% Bharat 3 Algeria 433a & 416b (Bir Seba) JOC Production PTTEP 35% 17 ** PetroVietnam 40% Sonatrach 25% 4 Algeria Hassi Bir Rekaiz OP Development PTTEP 49% Sonatrach 51% 5 Mariana Oil Sands OP Exploration PTTEP 100% (Canada) 6 Brazil JV Exploration PTTEP 25% Barreirinhas AP1 Shell Brasil 65% Mitsui E&P Brasil 10% Note: * PTTEP denotes respective PTTEP subsidiaries participating in the project ** Sales volume represent average volume for 100% of the project during Q1/2022 except for Algeria 433a & 416b (production volume) *** Status: OP = PTTEP operatorship / JOC = PTTEP joint operatorship/ JV = PTTEP Joint Venture Partner 41 Latest Status PTTEP • • AC/RL7 (Cash Maple) and Oliver (AC/RL12) Field: under way to define proper direction in order to increase development opportunities Tenacious and Oliver: On-going for well abandonment campaign Other exploration projects: G&G studies First Cargo is expected by 2025, subject to local security situation 1st Debt drawdown in project Finance Force Majeure was declared by the operator for safety reason due to the security incident in Palma. Plan to resume construction activities after security and safety restored in Cabo Delgado province Drilling of 2 development wells are on-going in Q1 2022. • Target to tie-in and produce 2 new wells in 2022 Existing wells intervention • Production respect OPEC+ policy • Continue drilling development wells Expected first oil production for the initial phase of around 10,000-13,000 barrels per day (BPD) in Q2 2022 Groupement (JOC) establishment in Q2 2022 Waiting for exploration wells drilling permit from the government

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