December 8, 2023

NEWS RELEASE www.jogmec.go.jp
Japan Organization for Metals and Energy Security
Division in Charge: Subsurface Division, Hydrogen and CCS ProjectDepartment
Tel:+81-43-276-9220
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Tel:+81-3-6758-8106

Commencement of CO2 Injection Field Test in Sukowati Field,Indonesia
Japan Organization for Metals and Energy Security (“JOGMEC”), PT Pertamina (Persero)(“PERTAMINA”), PT Pertamina EP (“PEP”) and Japan Petroleum Exploration Co., Ltd. (“JAPEX”)
announced the commencement of CO2 injection field test in the Sukowati oil field in East Jawa,Republic of Indonesia.

CO2 injection ceremony in Indonesia
From left, Dr. OKABE Hiroshi, Deputy Councilor, Hydrogen and CCS Project Department,JOGMEC, Mr. Awang Lazuardi, Director of Development and Production, Pertamina Hulu Energi,
Dr. Djoko Siswanto, Secretary General, National Energy Council, Mr. SUZUKI Kenichi, GeneralManager, Carbon Neutral Business Department, JAPEX, Mr. Muzwir Wiratama, General Manager,PEP, Dr. Oki Muraza, Senior Vice President, Research & Technology Innovation, PERTAMINA

1JOGMEC, Pertamina, PEP and JAPEX jointly commenced a CO2 Huff and Puff test in the Sukowatioil field as part of the Joint Study Agreement signed in July 2023. The field test is conducted to verify
the effect of CO2 enhanced oil recovery (“EOR”) and CO2 geological storage in the field, and toacquire necessary data to study the commercial implementation of CO2-EOR.
On December 7, 2023, a ceremony was held at the Sukowati oil field to commence CO2 injection,
witnessed by Dr. Djoko Siswanto, Secretary General, National Energy Council and Dr. Oki Muraza,
Senior Vice President, Research & Technology Innovation, PERTAMINA.
JOGMEC, PERTAMINA and PEP successfully implemented a CO2 Huff and Puff test in theJatibarang oil field in West Jawa, Indonesia in 2022. This is the second CO2 injection test conductedby Pertamina and PEP, following the CO2 injection in the Jatibarang oil field, and demonstrates thatthe implementation of the CO2-EOR technology, recognized as one of the major growing CCUS
technology in Indonesia, is making steady progress in the country.
The Sukowati oil field is in proximity to a large CO2 emission source and considered to have suitablesubsurface reservoir conditions for CO2-EOR. Using the subsurface data to be obtained by this field
test, JOGMEC and the joint study partners will continue working for realizing the commercial CO2EOR implementation in the Sukowati oil field.
JOGMEC engages this project under the Asian Zero Emission Community (AZEC) concept and theAsian Energy Transition Initiative (AETI), both led by the government of Japan, and the project isexpected to contribute to the construction of a CCUS network in the Asia region. JOGMEC iscommitted to improving Japan's energy security and contributing to sustainable economic
development and carbon neutrality in the Asian region, including Indonesia.
■References
Joint Study towards Implementing CO2 Injection Field Test in Sukowati Field in Indonesia (July 26,2023)(URL) https://www.jogmec.go.jp/english/news/release/news_10_00043.html
JOGMEC and PERTAMINA signed Memorandum of Understanding to contribute to energy
transition (April 17, 2023)(URL) https://www.jogmec.go.jp/english/news/release/news_10_00032.html
Commencement of CO2 Injection at the onshore oil field, Indonesia (October 27, 2022)(URL) https://www.jogmec.go.jp/english/news/release/news_10_00015.html
Implementation of CO2 Injection for CCUS in Indonesia (August 31, 2022)(URL) https://www.jogmec.go.jp/english/news/release/news_10_00008.html
Former Minister Kajiyama announced the Asia Energy Transition Initiative (AETI) (Web site of theMinistry of Economy, Trade and Industry)(URL) https://www.meti.go.jp/english/press/2021/0528_002.html
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Joint Announcement on Asia Zero Emission Community (AZEC) Concept (Web site of the Ministryof Foreign Affairs) (PDF)(URL) https://www.mofa.go.jp/files/100420486.pdf

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