SA Durban | PGS

East Coast - South Africa - 2018

SA Durban 3D GeoStreamer® (In Processing)

Modern 3D seismic survey offshore Durban Basin supporting the next phase of exploration
Website Map for Survey SAFR MC3D 2018
This modern seismic data is essential for further exploration in the Durban Basin. Numerous untested leads and prospects have been identified in the pre-Cretaceous, Lower Cretaceous, Upper Cretaceous and Tertiary sequences
Deepwater marine sandstones, submarine fans, turbidites, basin floor fans and sand-filled channel systems of Cretaceous-Tertiary age. Syn-rift fluvial and shallow marine sandstones of Late Jurassic-Early Cretaceous and Lower Cretaceous on-lap the flanks of tilted fault-blocks.
Advanced imaging techniques reduce uncertainty of prospects and leads by using GeoStreamer multi-sensor data which is rich in reliable low-frequency information, and deghosted by separating the recorded wavefields

Specifications

Survey summary

  • Type: 3D (In Processing)
  • GeoStreamer®
  • Geometry: Standard
  • Size: 3114 sq.km
  • Acquisition year: 2018
  • Completion of processing: 2019
  • Water depth: 1000-3000 m
  • Shooting direction: 0-180
  • Vessel: Ramform Sovereign
  • In partnership with: PASA

Acquisition parameters

  • Number of streamers: 10
  • Streamer length: 8025 m
  • Streamer separation: 150 m
  • Shot interval: 16.667 m
  • Record length: 10 000 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 6.25 x 25 m
  • Bin dimensions (Processing): 12.5 x 12.5 m
  • Fold: 80

Processing

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

Time products

  • Final Kirchhoff PSTM Stack
  • Angle stack near
  • Angle stack mid
  • Angle stack far
  • PSTM gathers
  • Stacking velocity
  • Migration velocity
  • Angle Stack
  • Angle stack u-far