Acquisition of interest in Southeast Jambi Block onshore Indonesia

July 18, 2018 Project

Mitsui Oil Exploration Co., Ltd. ("MOECO", Head Office: Tokyo, President & CEO: Hiroyuki Tsurugi) is pleased to announce that its wholly-owned Dutch subsidiary, MOECO Southeast Jambi B.V., has been successful in a joint bid for the Southeast Jambi Block located onshore in Indonesia. MOECO Southeast Jambi B.V. and Repsol Exploración South East Jambi B.V. have signed a Production Sharing Contract (PSC) on the 17th July 2018 with Satuan Kerja Khusus Pelaksana Kegiatan Usaha Hulu Minyak dan Gas Bumi ("SKK MIGAS") and MOECO Southeast Jambi B.V. will assume a 33% participating interest in the block, with the interests of all parties being as follows:

MOECO Southeast Jambi B.V.	33%
Repsol Exploración South East Jambi B.V. (Operator)	67%

MOECO has been engaging in exploration, development, and production of energy resources for many years in Thailand, Indonesia and other targeted parts of South East Asia. This successful bid reflects MOECO's aim to establish a more solid business foundation for further growth through continuous exploration and acquisition activities globally.