Tangkulo gas discovery offshore Sumatra could open wider deepwater development

May 14, 2024
Mubadala’s Tangkulo-1 gas and condensate find has lifted total in-place discovered resources in the area to 11 Tcf, according to Wood Mackenzie.

Offshore staff

JAKARTA, Indonesia — Mubadala’s Tangkulo-1 gas and condensate find on the South Andaman Block, 65 km offshore North Sumatra, has lifted total in-place discovered resources in the area to 11 Tcf, according to Wood Mackenzie.

That estimate includes the breakthrough Layaran-1 gas discovery on the same block last December and Harbour Energy's nearby Timpan (Harbour is also a partner to Mubadala in South Andaman).

Dr. Munish Kumar, senior analyst for upstream at Wood Mackenzie, said the quality of the reservoir at Tangkulo appears to be better than at Layaran, with flow test results suggesting higher levels of porosity and permeability.

“Multiple prospects exist across the South Andaman Block, and the deepwater basin fan play extends over several blocks, providing confidence that further finds will be made.”

The consultants estimate current gas demand in North Sumatra at about 280 MMcf/d.

Tangkulo “improves the viability of a range of development options, including supplying local markets or exporting via LNG or pipeline," according to Andrew Harwood, director of corporate and upstream research at Wood Mackenzie. “If the Tangkulo discovery and other nearby prospects are developed together, they could meet the domestic requirements, enabling Mubadala to explore export solutions for its Layaran find.”

Indonesia’s regulator SKK Migas will likely urge Mubadala to act swiftly in this regard, the consultants claim, with 2028 probably the earliest date for gas production based on a phased and fast-track development. But first gas post-2030 may be more realistic.

05.14.2024