Andaman Sea | PGS

Andaman Sea - India - 2008

Andaman Sea 2D

Long-offset dataset covering the under-explored Andaman Basin
Website Map for Survey Andaman Sea MC2D
The survey was designed to image areas to the east of the Andaman Island and in the Central Andaman Trough, where no data existed previously, providing a step change in the understanding and development of this complex and under-explored basin.
Long offset data images deep features and defines the basin architecture to aid in defining potential source and migration pathways. Modern seismic provides better resolution of carbonate and clastic reservoirs related to channels and fans.
Optomised imaging reveals a petroleum system and highlights potential traps. Long offset data images deep features and defines the basin architecture to aid in defining potential source and migration pathways in addition to the tectonic development of the basin.

Specifications

Survey summary

  • Type: 2D
  • Geometry: Standard
  • Size: 7 240 km
  • Acquisition year: 2008
  • Completion of processing: 2009
  • Water depth: 40-4400 m
  • Shooting direction: Various
  • Vessel: Zephyr
  • In partnership with: DGH

Acquisition parameters

  • Number of streamers: 1
  • Streamer length: 8 100 m
  • Shot interval: 25 m
  • Record length: 9 000 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 6.25 m
  • Bin dimensions (Processing): 12.5 m

Processing

  • 2D Surface Related Multiple Elimination (SRME)
  • High Resolution Radon Demultiple
  • Kirchhoff Pre-Stack Time Migration (PSTM)

Time products

  • Final Kirchhoff PSTM Stack
  • Angle Stack Near
  • Angle Stack Far
  • PSTM Gathers
  • Stacking Velocity
  • Migration Velocity

Additional products

  • Structural report
  • Gravity