Fortaleza | PGS

Ceará - Brazil

Fortaleza 3D GeoStreamer

Brazil equatorial margin play with proven exploration success
Website Map for Survey Fortaleza
Ceará on the equatorial margin of Brazil is an underexplored deepwater basin that is on strike to discoveries at Pecem and Pitu. This dataset targets Cretaceous to Lower Tertiary reservoirs.
The survey images upper slope to lower slope fan channel complexes sourced by rich Cretaceous source rock. Reservoir intervals from Cretaceous to Lower Tertiary are imaged by high fidelity GeoStreamer data. Analog prospects have been drilled in the conjugate margin in West Africa and in Guyana.
Modern broadband AVO-compliant signal processing with GeoStreamer data to time and depth for the best fidelity of seismic attributes.


Survey summary

  • Type: 3D
  • GeoStreamer
  • Size: 7162
  • Acquisition year: 2015
  • Completion of processing: 2016
  • Vessel: Ramform Atlas

Acquisition parameters

  • Number of streamers: 14
  • Streamer length: 8000 m
  • Streamer separation: 100 m
  • Shot interval: 25 m
  • Record length: 10240 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 25x6.25 m
  • Bin dimensions (Processing): 12.5x12.5 m
  • Fold: 81


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

Depth products

  • Final Kirchhoff PSDM stack
  • Final beam PSDM stack
  • PSDM gathers
  • Velocity model
  • PSDM angle stacks

Additional products

  • Gravity
  • Magnetics