Japan’s Mitsubishi Corporation has decided to invest JPY40bn (US$260m) in the Block CA2, an offshore gas field in Brunei, located approximately 100 km off the coast, where it has held an interest since 2002.
- Mitsubishi owns an 18.75% stake through its local subsidiary, Diamond Energy Exploration & Production (DEEP).
- The remainder is held by a subsidiary of Malaysia’s state-owned oil and gas company Petronas and state-owned Brunei Energy Exploration.
Commercial production at the new gas field is expected to begin in 2030, with an estimated output of 2.9 Mt/year, according to the company’s press release (Mitsubishi press release, 07/11/2025).
The extracted gas will be piped to Brunei LNG, the country’s sole LNG export facility, in which Mitsubishi holds a 25% interest, having been involved in the project since 1969. The Brunei LNG plant has a capacity of 7.2 Mt/year, but recent exports have averaged around 5 Mt/year, due to depletion of the gas fields feeding the facility.