Sepanjang Oil Field

Summary Information

  • Operator: Emp Kangean
  • Country: Indonesia
  • Location: offshore East Java
  • Production start:
  • Partners: EMP (50%), JAPEX (25%), and MC (25%)
  • Type: Oil / Gas
  • Estimated Reserves:
  • Production Volume:


  • The field is part of the Kangean PSC which is located offshore East Java and comprises an area of about 4,500 square kilometers. It is jointly owned by EMP (50%), JAPEX (25%), and MC (25%)


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  • 2004 - Originally acquired as 100 per cent interest from BP
  • 2007 - The field is closed temporarily due to a technical problem with the Floating Storage Offshore (FSO)


  • The Ngimbang Carbonate Formation, which is a tight carbonate reservoir located at a depth of approximately 4500-4700 ft VD.


  1. Kangean PSC, Fact Sheet
  2. Emp Kangean's Sepanjang Field Resumes Production
  3. Underbalanced Drilling Challenges and Benefits in a Marginal High-Pour-Point Oil Reservoir in Sepanjang Island, Indonesia

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