Hernando | PGS

DeSoto Canyon - USA - 2008

Hernando 3D GeoStreamer

Hernando covers the prolific Norphlet trend
Website Map for Survey Hernando
The Norphlet and other plays are well imaged by the state of the art PSDM. This survey covers the Shiloh discovery and additional prospects.
The Jurassic and overlying Cretaceous section can be broken down for play fairway analysis. The Florida escarpment is correctly dealt with in the velocity model building making this data invaluable for lead and prospect evaluation.

Specifications

Survey summary

  • Type: 3D
  • GeoStreamer
  • Geometry: Standard
  • Size: 8624 sq.km
  • Acquisition year: 2008
  • Completion of processing: 2010
  • Shooting direction: NE / SW
  • Vessel: Atlantic Explorer
  • In partnership with: TGS

Acquisition parameters

  • Number of streamers: 6
  • Streamer length: 7500 m
  • Streamer separation: 100 m
  • Shot interval: 37.5 m
  • Record length: 14000 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 6.25 X 25 m
  • Bin dimensions (Processing): 25 X 12.5 m
  • Fold: 100

Processing

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

Depth products

  • Final Kirchhoff PSDM stack
  • Final beam PSDM stack
  • Final WEM PSDM stack
  • PSDM gathers
  • Velocity model

Time products

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