PGS16004 | PGS

Norwegian Sea - Norway - 2016

PGS16004 3D GeoStreamer®

GeoStreamer to de-risk exploration in an underexplored area
Website Map for Survey PGS16004
The survey covers the Nyk High, Vema Dome, part of the Vigrid and Någrind synclines and the Hel Graben. It will offer full 3D AVO-compliant coverage to promote the exploration potential in this underexplored area with recent discoveries and the development of the Aasta Hansteen field.
Several gas discoveries have been made on the Nyk High, such as the Haklang, Snefrid, Gymir, Roald Rygg and Ivory. The primary reservoir sandstones are the deep marine fans of Cretaceous age such as the Kvitnos, Nise and Springar formations.
GeoStreamer is true broadband achieved through dual-sensor acquisition and the latest and best processing workflow. This survey is designed to unravel the many structural and stratigraphic traps in the Cretaceous.

Specifications

Survey summary

  • Type: 3D
  • GeoStreamer®
  • Size: 4 520 sq.km
  • Acquisition year: 2016
  • Completion of processing: 2017
  • Vessel: Ramform Tethys

Acquisition parameters

  • Number of streamers: 16
  • Streamer length: 8 100 m
  • Streamer separation: 75 m
  • Shot interval: 18.75 m
  • Record length: 9 216 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 6.25 x 18.75 m
  • Bin dimensions (Processing): 12.5 x 12.5 m
  • Fold: 96

Processing

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

Depth products

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

Time products

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