DUN2013 | PGS

East Shetland Basin - UK - 2013

DUN2013 3D GeoStreamer®

Improved and more reliable structural-stratigraphic delineation
Website Map for Survey MC3D-DUN2013
DUN2013 provides GeoStreamer 3D coverage over the north-eastern edge of the prolific East Shetland Basin, on a key area of the Brent Province. The largest fields in the survey area include: Dunlin, Osprey and Causeway, all with a Middle Jurassic reservoir (Brent Group).
The main basin structural features formed during the Late Jurassic rifting. The Basin prospectivity is dominated by Middle Jurassic sand prone reservoirs within clearly defined structural closures (e.g. Brent Group). The source kitchen is the upper Jurassic Kimmeridge Clay within graben lows.
The higher frequency content and wider bandwidth provided by true broadband GeoStreamer technology provide improved and more reliable structural-stratigraphic delineation. This results in a better understanding of the lateral distribution of the reservoirs over this key mature area.

Specifications

Survey summary

  • Type: 3D
  • GeoStreamer®
  • Geometry: Standard
  • Size: 438.2 sq.km
  • Acquisition year: 2013
  • Completion of processing: 2014
  • Water depth: 150 m
  • Shooting direction: 90/270
  • Vessel: Ramform Valiant
  • Alternate ID: MC3D-DUN2013

Acquisition parameters

  • Number of streamers: 12
  • Streamer length: 6 000 m
  • Streamer separation: 75 m
  • Shot interval: 18.75 m
  • Record length: 7168 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 6.25 x 18.75 m
  • Bin dimensions (Processing): 12.5 x 12.5 m
  • Fold: 80

Processing

  • Dual Sensor Wave Field separation and P-UP generation
  • 3D Surface Related Multiple Elimination (SRME)
  • High Resolution Radon Demultiple
  • XT / Tau-P Deconvolution
  • Anisotropic Kirchhoff Pre-Stack Time Migration (PSTM)

Time products

  • Final Kirchhoff PSTM Stack
  • Angle Stack Near
  • Angle Stack Mid
  • Angle Stack Far
  • Angle Stack UFar
  • PSTM Gathers
  • Stacking Velocity
  • Migration Velocity