Thailand Focus 2022

PTTEP Overview | Reserves MMBOE Reserves Life 2021 by Geography 2,500 Domestic International 2,123 11.7 Years 2,123 2,000 1,647 1,622 1,350 773 54% 1,500 7.5 Years 55% 507 548 46% 45% 1,000 1,350 1,140 500 1,074 • As of December 2021 2019 2020 2021 Proved (P1) Probable (P2) 5-Year Average Proved Reserves Replacement Ratio (RRR) 2019 1.5X 2020 1.5X 2021 1.9X P1 P1 + P2 2021 by Product Type Gas Liquid 2,123 1,350 30% 26% 70% 74% P1 P1 + P2 Based on total production of natural gas, condensate, and crude oil (including LPG) of 495 KBOED for the year ended December 31, 2021 Figures include reserves from equity method 20 20 PTTEP

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