WGG2013M | PGS

Moray Firth - UK - 2011, 2012, 2013

WGG2013M 3D GeoStreamer®

Extend known Jurassic-Cretaceous plays and discover new potential
Website Map for Survey MC3D-WGG2013M
Covering the north-western margin of the Witch Ground Graben and parts of the Halibut Shelf and the East Shetland Platform, this survey increases coverage and offers enhanced imaging, targeting known Jurassic-Cretaceous plays to reveal new potential.
The structural features formed during the Late Jurassic and Early Cretaceous rifting. The main prospectivity relies on syn-rift reservoir sandstones within structural and stratigraphic traps (e.g., Claymore and Scapa fields). The Paleozoic is clearly visible, allowing for deeper target exploration.
GeoStreamer technology provides superior images of Upper Jurassic and Lower Cretaceous main targets, underlying a thick Chalk cover. The greater bandwidth improves the definition of structures and stratigraphic geometries and allows the assessment of deeper potential (e.g. Devonian).

Specifications

Survey summary

  • Type: 3D
  • GeoStreamer®
  • Geometry: Standard
  • Size: 3 032.1 sq.km
  • Acquisition year: 2011, 2012, 2013
  • Completion of processing: 2014
  • Water depth: 100-170 m
  • Shooting direction: 53.5/233.5 & 125/305
  • Vessels: Ramform Challenger, Ramform Valiant, Ramform Viking

Acquisition parameters

  • Number of streamers: 12
  • Streamer length: 6 000 m
  • Streamer separation: 75 m
  • Shot interval: 18.75 m
  • Record length: 7 168 ms
  • Sample rate: 2.0 ms
  • Bin dimensions (Acquisition): 18.75 x 6.25 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
  • Kirchhoff Pre-Stack Depth Migration (PSDM)
  • Beam Depth Migration

Depth products

  • Final Kirchhoff PSDM Stack
  • Final BEAM PSDM Stack
  • Angle PSDM Stack Near
  • Angle PSDM Stack Mid
  • Angle PSDM Stack Far
  • Angle PSDM Stack UFar
  • PSDM Gathers
  • Velocity Model