Eni North Ganal Ltd. discovered gas in the Geng North-1 exploration well in North Ganal PSC about 85 km off the cost of East Kalimantan, Indonesia.
Geng North-1 was drilled to a depth of 5,025 m in 1,947 m of water. It encountered a gas column about 50 m thick in a Miocene sandstone reservoir with excellent petrophysical properties that has been subject of an extensive data acquisition campaign. A drill stem test (DST) was limited by the test facilities but has resulted in estimated well capacity of up to 80-100 MMscfd and about 5,000-6,000 b/d of condensate, the company said in a release Oct. 2.
Preliminary estimates indicate a total structure discovered volume of 5 tcf of gas in place with a content of condensate estimated up to 400 million bbl. The acquired data will help fast track options for development, Eni said.
The Geng North discovery is adjacent to the Indonesia Deepwater Development (IDD) area that includes several stranded discoveries within the Rapak and Ganal PSC blocks, which Eni acquired from Chevron Corp. (OGJ Online, July 25, 2023). The acquisition could fast track development of the Gendalo and Gandang gas project (about 2 tcf of gas reserves) through Eni’s operated Jangkrik infrastructure.
Due to its location and size, the discovery could also contribute to the creation of a new production hub in the Northern part of Kutei basin, to be connected to the Bontang LNG infrastructure on the coast of East Kalimantan, Eni said. It is estimated that, in addition to Geng North, more than 5 tcf of gas in place are present in undeveloped discoveries within the area of interest, while multi-tcf exploration potential is under maturation through ongoing studies.
Eni is operator of North Ganal PSC (50.22%) with partners Neptune Energy North Ganal BV (38.04%) and Agra Energi I Pte Ltd. (11.74%).