ANG Kwanza Shelf | PGS

Kwanza Basin - Angola - 2019

ANG Kwanza Shelf 3D GeoStreamer® (In Processing)

Opportunities in Angola Kwanza Shelf Blocks 6, 7 and 8 revealed by new MultiClient GeoStreamer data
Website Map for Survey MC3D ANG Kwanza Shelf 2019
The remaining hydrocarbon potential of the Kwanza Shelf is thought to be considerable and the area is witnessing a resurgence in exploration interest.
Past successes within the Kwanza Shelf include fields and discoveries with successful reservoirs in both the presalt and the postsalt. The shallow-water blocks of the Kwanza Shelf, which are presently open acreage, have been overlooked in recent exploration cycles.
Multisensor 3D GeoStreamer data has been combined with modern processing and imaging workflows to identify and unlock the underexplored presalt and postsalt plays, addressing all the challenges in the data.

Specifications

Survey summary

  • Type: 3D (In Processing)
  • GeoStreamer®
  • Geometry: Standard
  • Size: 11394 sq.km
  • Acquisition year: 2019
  • Completion of processing: ongoing
  • Water depth: 50-250 m
  • Shooting direction: 164/344
  • Vessel: Ramform Sovereign
  • In partnership with: ANPG

Acquisition parameters

  • Number of streamers: 12
  • Streamer length: 8025 m
  • Streamer separation: 112.5 m
  • Shot interval: 16.667 m
  • Record length: 10 000 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 6.25 x 18.75 m
  • Fold: 80

Processing

  • P-UP generation
  • Full source deghosting
  • 3D surface related multiple elimination (SRME)
  • Convolutional 3D SRME
  • Wave equation 3D SRME
  • High resolution radon demultiple
  • HyperTomo velocity model building
  • Full waveform inversion (FWI)
  • Kirchhoff prestack depth migration (PSDM)
  • Reverse time migration (RTM)
  • Beam depth migration
  • Separated wavefield imaging (SWIM)

Depth products

  • Final Kirchhoff PSDM stack
  • Final RTM PSDM stack
  • Final SWIM stack
  • PSDM gathers
  • Anisotropy and velocity models
  • Final Kirchhoff PSDM angle stacks

Additional products

  • Gravity
  • Magnetics
  • Interpretation