Eni makes gas discovery with Geliga-1 well offshore Indonesia

Eni SPA has made a natural gas discovery with the Geliga‑1 exploration well in the Kutei basin, offshore Indonesia, about 70 km off East Kalimantan.

The well, drilled in about 2,000 m of water to a total depth of roughly 5,100 m, encountered a ‘significant’ gas column in a Miocene reservoir with excellent petrophysical properties, Eni said in an Apr. 20 release. Preliminary estimates place in‑place resources at about 5 tcf of gas and 300 million bbl of condensate. A drillstem test (DST) is planned to evaluate reservoir productivity.

Geliga‑1 lies in the Ganal production‑sharing contract, operated by Eni with 82% interest. Sinopec holds the remaining 18%.

The natural gas discovery follows recent exploration successes in the basin, including the Geng North discovery in late 2023 and the Konta‑1 discovery in late 2025, confirming the scale of the gas play in the area, the company said.

The new discovery lies adjacent to the undeveloped Gula gas discovery, estimated to contain 2 tcf of gas in place and 75 million bbl of condensate. Initial assessments indicate that combined Geliga and Gula resources could support production of about 1 bcfd of gas and 80,000 b/d of condensate.