Jerun Talus Gas Discovery in Central Luconia Province, Off the Coast of Sarawak, Offshore Malaysia

Jerun field is located 155 kilometres northwest of the Bintulu LNG Plant in 88 metres water depth. The field was discovered by Jerun-1 exploration well drilled in November 2015. Prior to Jerun discovery, the Jerun prospect was mapped on 2D seismic data of various vintages. In 2016, a Terumbu Luconia Mega 3D broadband seismic survey with total full area of 12,792 square kilometres was acquired in the Central Luconia. A pre-stack depth migration seismic processing (Q-PSDM) was carried out in between year 2016–2017, which had mapped talus deposit along the eastern flank of the carbonate pinnacle that was not penetrated by Jerun-1 exploration well.

The talus is characterised by the steeply dipping seismic reflectors impinging the eastern side of the Jerun field. Jerun field development plan (FDP) was approved in February 2020 with six well development in the reef pinnacle with condition to appraise the Talus during the development drilling. Jerun A3 development well was selected as the development cum appraisal well to assess the talus geology, reservoir quality, fluid content and connectivity of talus to the reef pinnacle. Recent drilling campaign in 2023 has revealed the successful gas discovery in the Jerun talus.