PGS15917VIK | PGS

Viking Graben - UK/Norway - 2005 - 2013

PGS15917VIK 3D GeoStreamer

Derisk future exploration and extend production of existing fields with GeoStreamerPURE
Website Map for Survey PGS15917VIK
Get a unique insight into the structural geology and petroleum system of the Norwegian Sea with this large scale GeoStreamer dataset. This survey targets an area that has been extensively explored with numerous commercial oil and gas discoveries.
Late Jurassic rifting led to the formation of numerous horsts/rotated fault blocks along the Viking Graben Margins. Existing fields range from Triassic-Jurassic structural closures to Paleocene/Eocene injectites in the depocenters. Clearly imaged Devonian structures and potential exits also exist.
Coverage has been built up over several years of consistent acquisition using GeoStreamer technology. Earlier data vintages have been reprocessed and imaged in depth from original field data, using the same modern workflows to allow a unified interpretation approach through the entire volume.

Specifications

Survey summary

  • Type: 3D
  • GeoStreamer
  • Size: 9169 sq.km
  • Acquisition year: 2005 - 2013
  • Completion of processing: 2017
  • Water depth: 100 - 150 / 80 - 130 / 110-160 / 90 - 140 / 90-160 / 90 - 130 m
  • Shooting direction: 294.28 / 90 / 114.28 / 264.28 / 270
  • Vessels: Ramform Challenger, Pacific Explorer

Acquisition parameters

  • Number of streamers: 6-12
  • Streamer length: 6 000 / 3 600 m
  • Shot interval: 18.75 m
  • Record length: 5 632 / 6 656 / 7 168 / 7 680 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 12.5 x 25.0 / 6.25 x 25 / 6.25 x 18.75 / 12.5 x 12.5 / 6.25 x 12.5 m
  • Bin dimensions (Processing): 12.5 x 12.5 m
  • Fold: 80

Processing

  • P-UP generation
  • 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)
  • Beam depth migration
  • Q-migration
  • Separated wavefield imaging (SWIM)
  • Least squares imaging (WEI)

Depth products

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

Time products

  • Final post-stack time migration
  • Final Kirchhoff PSTM Stack
  • Stacking velocity
  • Migration velocity
  • Angle stacks