West Natuna | PGS

West Natuna Basin - Indonesia - 1998

West Natuna 3D

The survey is located in a mature basin with potential hydrocarbons in the low relief anticlines
Website Map for Survey West Natuna MC3D
More than 10 significant oil and gas discoveries have been made in the West Natuna Basin in recent years, of which several are located within the survey area.
Several potential traps and leads over the entire Anambas area have been identified similar in nature to the nearby Naga -1 gas discovery. Other potential structures can be seen eastward of the Terebuk graben system.
A 1 278 sq km subset of the data was reprocessed in 2006 and provides high quality amplitude information, allowing for detailed analysis of the fluvio-deltaic sediment systems. AVO work has been performed in the Anambas area within the reprocessed data.


Survey summary

  • Type: 3D
  • Geometry: Standard
  • Size: 6 005 sq.km
  • Acquisition year: 1998
  • Completion of processing: 1999-2006
  • Reprocessing: Yes
  • Water depth: 60 m
  • Shooting direction: NE/SW (30/210)
  • Vessel: Ramform Challenger
  • In partnership with: MIGAS

Acquisition parameters

  • Number of streamers: 8
  • Streamer length: 3 000 m
  • Streamer separation: 100 m
  • Shot interval: 25-18.75 m
  • Record length: 5 120 ms
  • Sample rate: 2 ms
  • Fold: 60


  • Poststack time migration

Time products

  • Final post-stack time migration
  • Final Kirchhoff PSTM Stack
  • Stacking velocity
  • Migration velocity
  • Angle Stack

Additional products

  • Intercept & Gradient Volumes