Offshore South East Sumatra (OSES) Report

Asset Report 05 June 2025

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Report summary

The Offshore South East Sumatra (OSES) PSC is one of Indonesia's largest offshore oil developments with over 1.5 billion barrels produced since 1971. Located in the shallow waters of the Java Sea off the southern tip of Sumatra, OSES is adjacent to the Offshore North West Java (ONWJ) PSC, also one of the largest offshore oil developments in the country. The two largest fields in OSES, Cinta and Widuri, are very mature and total oil output has sharply declined from its peak in 1991.

Summary
Key Issues
- Recent
- Historical
- 1990s
- 2000s
- 2010-2015
Recent activity
Historical activity
- Sunda Basin
- Asri Basin
- Seismic
- Exploration drilling
Emissions
Key development metrics
- 2018 extension
- Facility summary
- Intan-Widuri development
- Gas development
- Other developments
- Development activity
Secondary recovery
- Rama field
- Krisna field
- Widuri field
- Others
Tertiary recovery
- Widuri field
Abandonment/Decommissioning
Sunda Basin
Asri Basin
Exploration Costs
9 more item(s)...