PGS18M09CGR | PGS

Central Graben - Norway - 2010-2015

PGS18M09CGR 3D GeoStreamer (In Processing)

Ideal dataset for detailed mapping of existing fields and exploration targets in the Central Graben
Website Map for Survey PGS18M09CGR
Get a unique insight into the structural geology and petroleum system of the Central Graben with this large scale GeoStreamer dataset. The survey comprises MC3D-CGR2010, CGR2011, CGR2012, CGR2013, CGRN13, NDB2013, TEG2013, PGS15001, PGS15008, PGS15015, and PGS16008.
From North to South, the Central Graben dataset covers Gert Ridge over the Gertrud Graben, Piggvar Terrace and Mandal High, Søgne Basin, the Coffee Soil Fault complex, Heno Plateau, the Tail End Graben and Ringkøbing Fyn High.
Coverage has been built up over several years of consistent acquisition using GeoStreamer technology. The data have been processed and imaged in depth using the same modern workflows to allow a unified interpretation approach through the entire volume.

Specifications

Survey summary

  • Type: 3D (In Processing)
  • GeoStreamer
  • Size: 23 085 sq.km
  • Acquisition year: 2010-2015
  • Completion of processing: 2019
  • Reprocessing: Yes
  • Water depth: 60 m
  • Shooting direction: 8 / 325
  • Vessels: Ramform Atlas, Ramform Challenger, Ramform Valiant, Ramform Vanguard, Ramform Viking, Atlantic Explorer

Acquisition parameters

  • Number of streamers: 6 / 10 / 12
  • Streamer length: 6 000 / 8 100 m
  • Shot interval: 18.75 m
  • Record length: 7 000 / 7 168 / 7 680 / 8 704 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 18.75x6.25 / 25x6.25 m
  • Bin dimensions (Processing): 12.5x12.5 m
  • Fold: 98 / 160 / 108

Processing

  • P-UP generation
  • Full source deghosting
  • Full source and receiver deghosting (conventional data)
  • 3D surface related multiple elimination (SRME)
  • Wave equation 3D SRME
  • High resolution radon demultiple
  • Internal multiple attenuation
  • HyperTomo velocity model building
  • Full waveform inversion (FWI)
  • Kirchhoff prestack time migration (PSTM)
  • Kirchhoff prestack depth migration (PSDM)
  • Beam depth migration
  • Q-migration
  • Separated wavefield imaging (SWIM)
  • Anisotropic Kirchhoff prestack time migration (PSTM)
  • Least squares imaging (WEI)
  • Poststack time migration
  • Post-migration image optimization

Depth products

  • Final Kirchhoff PSDM stack
  • PSDM gathers
  • Anisotropy and velocity models
  • Velocity model
  • Final Kirchhoff PSDM angle stacks
  • Final beam PSDM angle stacks

Additional products

  • Interpretation