Eni has conducted a drill stem test (DST) at the Geliga-1 gas discovery offshore East Kalimantan, Indonesia, confirming the reservoir’s potential to deliver up to 60 million standard cubic feet per day of gas, despite rig facility constraints.
The Geliga-1 well is projected to yield around 200 million cubic feet per day (mcf/d) of gas and approximately 10,000 barrels per day (bpd) of condensate, based on the DST results.
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It is located in the Ganal Block within Indonesia’s Kutei Basin, approximately 70km from the coast of East Kalimantan.
The well was drilled in waters approximately 2,000m deep, reaching a total depth of roughly 5,100m, and uncovered a significant gas column in the Miocene interval, noted for its favourable petrophysical qualities.
Test results confirm the preliminary assessment of around five trillion cubic feet (tcf) of gas and 300 million barrels (mbbl) of condensate within the interval.
Adjacent to Geliga-1 is the undeveloped Gula gas discovery, estimated to contain approximately 2tcf of gas and 75mbbl of condensate.
Preliminary evaluations suggest that together, the Geliga and Gula fields could support additional production of approximately one billion cubic feet of gas and 80,000bpd of condensate.
A plan of development is in the works and will soon be submitted to the Indonesian Government.
This plan focuses on establishing a third production hub in the Kutei Basin, complementing the Gendalo and Gandang projects (South Hub) and the Geng North and Gehem fields (North Hub), using the current North Hub project development model.
Simultaneously, assessments are being conducted on the expansion of liquefaction capacity at the Bontang plant, which could potentially allow the reactivation of two non-operational liquefied natural gas trains.
The Geliga-1 discovery forms part of the Ganal Production Sharing Contract, with Eni holding an 82% stake and Sinopec the remaining 18%.
It is included in a portfolio of 19 blocks that is set to be transferred to Searah, a joint venture between Eni and Petronas, scheduled for completion by the second quarter of 2026.
Searah aims to harness technical expertise and financial strength to bolster growth in South East Asia and plans to develop around three billion barrels of oil equivalent in discovered resources and explore further potential.
Preparations for the transition are proceeding smoothly, with no significant hurdles anticipated.
A separate process to sell a 10% stake in Eni Indonesia to a third party is under way and is expected to finalise in 2026, with the discovery at Geliga enhancing this sale’s value.
Eni has been active in Indonesia since 2001, maintaining a diverse upstream portfolio across exploration, development and production.
It has a net production of approximately 90,000 barrels of oil equivalent per day, primarily from the Jangkrik and Merakes fields offshore East Kalimantan.
