PTTEP Operations Overview

Other South East Asia countries Expanding foothold in the region VIETNAM INDONESIA Vietnam Vietnam 16–1 (28.5% WI) Average sales volume of crude oil was 12 KBPD in 6M2021 • The project is preparing the drilling of additional development wells in order to maintain the production level in 2021. Southwest Vietnam Vietnam B & 48/95 (8.5% WI) Vietnam 52/97 (7% WI) • Field Development Plan was approved by Government • The project is currently in the negotiation process on commercial terms to put forward FID • First production target by end of 2024, and ramp up to full capacity of 490 MMSCFD Production projects Pre sanction projects . Indonesia Natuna Sea A (11.5% WI) • Average sales volume of natural gas was 214 MMSCFD in 6M2021 • The project is preparing the drilling of additional development wells in 2021. PTTEP 33 Energy Partner of Choice

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