Southeast Asian Nations Launch $20 Billion Deepwater Gas Expansion

SINGAPORE – Southeast Asian energy producers are embarking on a massive shift toward deepwater gas extraction to combat dwindling domestic reserves and bolster regional energy security.

Energy research firm Wood Mackenzie reports that Indonesia, Malaysia, and Brunei are targeting approximately 28 trillion cubic feet of resources in a movement labeled “Deepwater 2.0.”

The ambitious expansion requires more than $20 billion in infrastructure investment by the end of the decade to offset rapid declines in traditional onshore and shallow-water fields.

Industry analysts suggest this new phase is vital as Indonesia’s offshore gas output has dropped over 12% since 2018 and Brunei faces a significant supply deficit after 2030.

Malaysia is also pivoting its strategy, with projections showing that deepwater sources will account for one-fifth of the nation’s total gas production by 2027.

Six major developments serve as the foundation for this wave, including the Rosmari-Majoram project in Malaysia, Brunei’s Kelidang, and multiple clusters in Indonesia’s Kutei and North Sumatra basins.

The project lineup features a diverse group of operators including global majors like Shell and Eni, national entities like Petronas, and emerging players such as Mubadala.

Financial experts warn that these ventures face precarious economics, with internal rates of return often hovering near a narrow 15% threshold.

These thin margins leave developers with almost no room for error, as Wood Mackenzie models indicate that even minor cost overruns or price drops could erase project value.

Lengthy delays are particularly damaging, with a three-year setback potentially cutting the net present value of a development in half.

Global supply chain constraints and geopolitical tensions in the Middle East further complicate the timeline by driving up the cost of specialized subsea equipment.

In response to these pressures, firms like Eni and Mubadala are utilizing fast-track strategies to move from discovery to production in as little as five years.

The success of these upcoming projects is seen as a litmus test for whether the region can transition into a sustainable deepwater hub amid a volatile global market.

Industry observers note that the next five years will be the deciding factor in whether Southeast Asia can successfully harness these technically challenging and expensive resources.