Production & Exploration

We have been present in Indonesia since 2004 and currently operate four offshore Production Sharing Contracts (PSCs): In the Makassar Strait, the Sebuku PSC with the producing Ruby gas field, and the West Sebuku PSC, plus the Andaman I and South Andaman Gross Split PSCs at the northern Sumatra offshore. We also have interest in the Andaman II PSC and exploring further growth opportunities.

Our Indonesia operations has maintained an excellent safety record with no Lost Time Incident (LTI) during development and in production. The Ruby operations are certified with the international management, safety and environmental standards: ISO 9001, 14001 and 45001.

We have a well-established Community Investment program, in which we collaborate with local stakeholders to support the coastal communities in the vicinity of our Ruby operations.

Ruby gas field, Sebuku PSC

The Ruby gas field supplies reliably and safely gas for the domestic market since October 2013. Located in the Makassar Strait (between the islands of Kalimantan and Sulawesi), Mubadala Energy as the operator has a 63 percent interest in Sebuku PSC with partners, TotalEnergies EP Sebuku and INPEX South Makassar Ltd., each holding a 13.5 percent interest and PT. Dangsanak Banua Sebuku (a regional-owned enterprise of the Government of South Kalimantan and West Sulawesi) with 10 percent interest.

The facilities include a Wellhead Platform (WHP) and a Production and Living Quarter’s Platform (PQP) with the gas being transported via a 312-kilometer underwater pipeline to the onshore receiving facilities at Senipah. Ruby has achieved over 280 billion cubic feet cumulative gas production to date, and now entering the end life stage.

West Sebuku

We are the operator of the West Sebuku exploration block which surrounds the Sebuku PSC, and holds a 75.5 percent interest with INPEX West Sebuku Limited holding 24.5 percent interest.

Andaman exploration blocks

We are the operator of the Andaman I and South Andaman Gross Split PSCs with 80 percent interest and have a 30 percent interest in the adjacent Andaman II PSC.

Mubadala Energy is the largest net acreage holder in the area, securing the core of the North Sumatra basin for the future exploration growth with the potential to unlock a new material gas play.

In 2023, Mubadala Energy announced a major gas discovery at Layaran-1 exploration well in the South Andaman block, offshore North Sumatra, with the potential for over 6 TCF of excellent quality gas-in-place.

This marked the first deep water well operated by the company, which was drilled to a depth of 4,208 meters in 1,207 meters water depth.

The well encountered an extensive gas column with a thickness of over 230 meters in an Oligocene sandstone reservoir. A complete data acquisition including wireline, coring, sampling and production test (DST) were conducted. The well successfully flowed over 30mmscf/d of excellent gas quality.

The discovery adds material contingent volume that enhances the energy security in the region and provide a platform for continued growth for Mubadala Energy.