BM-S-50/52 Ph2 | PGS

Santos Basin - Brazil - 2011

BM-S-50/52 Ph2 3D GeoStreamer

Presalt Carcará trend: one of the most important recent discoveries in the Aptian of Santos Basin
Website Map for Survey BM-S-50/52 Ph2
The hydrocarbon plays within the BMS-50/52 survey area are: a. Postsalt: Albian limestones; Upper Cretaceous to Lower Tertiary turbidites in subtle traps; b. Rift/Pre-rift sandstones and basalts in the central-western area and c. Sag/Rift Aptian presalt microbial limestones.
The BM-S-50/52 Ph. II 3D seismic survey is on trend and/or adjacent to the most prolific fields and discoveries in the northern Santos Basin, including Merluza, Lagosta, Cedro, Mexilhao, SPS-36, and ENI-004. This is a light oil to condensate/gas province which enjoys substantial industry attention.
BM-S-50/52 Phase II, a dual-sensor GeoStreamer PSDM volume. High-quality seismic data together with the better understanding of the petroleum systems in the area will provide important input for the unitization of Carcará and of any other future discoveries that may straddle block boundaries.


Survey summary

  • Type: 3D
  • GeoStreamer
  • Size: 2340.2
  • Acquisition year: 2011
  • Completion of processing: 2012
  • Water depth: 150 -2085 m
  • Shooting direction: 0 / 180
  • Vessel: Ramform Valiant

Acquisition parameters

  • Number of streamers: 10
  • Streamer length: 8100 m
  • Streamer separation: 100 m
  • Shot interval: 25 m
  • Record length: 9200 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 6.25 x 25 m
  • Bin dimensions (Processing): 12.5 x 12.5 m
  • Fold: 80


  • 3D surface related multiple elimination (SRME)
  • Kirchhoff prestack time migration (PSTM)
  • Kirchhoff prestack depth migration (PSDM)
  • Radon and residual

Depth products

  • Final Kirchhoff PSDM stack
  • Final beam PSDM stack
  • PSDM angle stack near
  • PSDM angle stack mid
  • PSDM angle stack far
  • PSDM angle stack u-far
  • PSDM gathers
  • Velocity model

Time products

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