South Natuna Sea Block B PSC Oil And Gas Fields

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Indonesia Oil & Gas Fields

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Summary Information

  • Operator: Conocophillips
  • Country: Indonesia
  • Location: South Natuna Sea
  • Production start: 1979
  • Partners: Operator: ConocoPhillips (40.0%), INPEX (35.0%), Chevron (25.0%)
  • Type: Oil & Gas
  • Estimated Reserves:
  • Production Volume:


  • The PSC was awarded in 1968, and first production came on line in 1979. The PSC is scheduled to expire in 2028.
  • The block is in approximately 300 feet of water and has 11 offshore platforms, four producing subsea fields, and one FPSO, the Belanak FPSO, in addition to two dedicated floating storage and offloading vessels.
  • The infrastructure supports three producing oil fields, as well as 16 natural gas fields in various phases of development. Currently eight gas fields are in production, of which five have associated recoverable oil or condensate volumes.
  • The fields include the Belanak Oil And Gas Field, South Belut Gas Field, Hiu Gas, Kerisi Oil and Gas, North Belut Gas Field and Bawal Gas fields
  • Natural gas is sold to Singapore and Malaysia through two long-term contracts via the West Natuna Transportation System Gas Pipeline


  • JGC: Design, procurement, construction, and start-up assistance services for Floating Production Storage and Offloading (FPSO) facilities, flexible risers, and subsea cables
  • PT Timas: Bawal Pipeline


  • 1968 - The PSC was awarded
  • 1977 - INPEX acquired a 17.5% interest
  • 1979 - First production started
  • 1994 - INPEX increased its interest to 35%
  • 2001 - Supplies of natural gas to Singapore commenced
  • 2004 - Start of crude oil and condensate production from Belanak
  • 2009 - North Belut Gas production started
  • 2014 - Gas production started on South Belut



  1. Fact Sheet
  2. Inpex, Indonesia
  3. Hyundai Heavy Industries Platform References
  4. Serimax Asia Pipeline References
  5. Start of crude oil and condensate production from Belanak oil and gas field in the South Natuna Sea Block B Production Sharing Contract, Indonesia
  6. Indonesia: The South Belut Gas Field commences production in South Natuna Sea Block B

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