UK independent Seascape Energy is advancing a significant gas development opportunity at its Temaris Cluster Small Field Asset production sharing contract (PSC) offshore Peninsular Malaysia, which it was awarded in June. The asset holds the potential to become a 1 trillion cubic feet (Tcf) gas hub.

Initial Development and Market Drivers

Seascape is targeting a low-cost development of the Tembakau and Mengkuang dry gas fields, originally discovered by Lundin Petroleum. The company aims to submit a field development and abandonment plan (FDAP) to regulator Petronas by the end of 2026. The fields consist of stacked Miocene channel sands that are clearly identifiable on seismic data, and the shallow water location contributes to low development costs. All produced gas is intended for nearby infrastructure and will be piped to the Kerteh landfall, where Petronas will purchase it. A key driver for rapid development is a burgeoning gas shortage for power generation in Peninsular Malaysia, which has recently led the country to import liquefied natural gas from Australia.

Expansion and Partnership Strategy

The potential of the SFA PSC extends significantly beyond the initial Tembakau and Mengkuang fields. Seascape, which currently holds a 100% interest in the 1200-square kilometre shallow-water asset, intends to bring a partner onboard next year ahead of development and future exploration drilling. The company believes there is huge potential in the area, with Tembakau estimated at just under 250 billion cubic feet (Bcf) of gas.

Prospect Inventory and Geological Potential

The Temaris Cluster contains several other prospects. Tembakau is seen extending to the west and northwest into a feature called Keladi, which is estimated to hold 188 Bcf of contingent gas resources with a 45% geological chance of success (CoS). This extends further into a large feature called Allamanda, which has a best-estimate contingent resource of 406 Bcf and a 30% CoS. Other prospects include Tembakau West (23 Bcf, 50% CoS), Kangkung (66 Bcf, 38% CoS), and Mengkuang South. The Allamanda prospect is particularly notable for its proximity—roughly 10 kilometres northwest of the Tembakau field—which would allow any discovery to be easily tied into the overall Tembakau field development plan. Allamanda is on a shallower stratigraphic level than Tembakau, a level that has not been previously drilled in that part of the Malay basin, representing a new stratigraphic play on the basin margins.

Technical De-risking and Data Analysis

Seascape acknowledges more work is needed on existing seismic and geological modelling to de-risk the prospects before deciding on a drilling location. A favoured scenario is a wildcat well that could test multiple play types simultaneously. The company benefits from an extensive dataset in Malaysia. Almost the entire Temaris block is covered by 3D seismic data. They also possess non-seismic data, specifically full tensor gravity (FTG) data shot by Petronas, which helps delineate the basin, identify structural elements, and understand charge migration from the centre of the Malay basin northwards to the Temaris area. Through seismic amplitudes, the company can identify channel features, full systems, and tidal bars, using present-day analogues to understand potential reservoir characteristics. Analysis of gas samples from earlier wells indicates the presence of sweet gas, meaning it contains no CO2 or H2S and has very low nitrogen, making it of high quality.

Strategic Significance

The development is considered a potential game-changer for both the basin and

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