ANG Namibe | PGS

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Namibe Basin - Angola - 2014

ANG Namibe 3D GeoStreamer®

Revealing the base and geometry of this pre-salt play
Website Map for Survey Block 27-28-29
Over 11 100 sq. km of data covering Angolan offshore blocks 27, 28, 29 and 11.
The main target is the thick syn-rift and sag sedimentary succession, which lies under a well developed evaporite salt layer. The GeoStreamer 3D survey targets the base and geometry of the salt unit and the underlying rifted basement structures.

Specifications

Survey summary

  • Type: 3D
  • GeoStreamer®
  • Geometry: Standard
  • Size: 11 134 sq.km
  • Acquisition year: 2014
  • Completion of processing: 2016
  • Water depth: 100 - 3 000 m
  • Shooting direction: 14/194
  • Vessel: Ramform Valiant
  • In partnership with: Sonangol

Acquisition parameters

  • Number of streamers: 12
  • Streamer length: 8 100 m
  • Streamer separation: 100 m
  • Shot interval: 25 m
  • Record length: 10 240 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 6.25 x 25 m
  • Bin dimensions (Processing): 12.5 x 12.5 m
  • Fold: 81

Processing

  • 3D surface related multiple elimination (SRME)
  • High resolution radon demultiple
  • Beam depth migration
  • P-UP generation
  • Kirchhoff prestack depth migration (PSDM)

Depth products

  • Final Kirchhoff PSDM stack
  • Final beam PSDM stack
  • PSDM gathers
  • Angle Stacks
  • Velocity model

Additional products

  • Gravity
  • Magnetics