FNT2013 | PGS

South of Ireland - Ireland - 2013

FNT2013 2D GeoStreamer®and EM

Combined GeoStreamer and EM acquisition in the Celtic Sea
Website Map for Survey MC2D-FNT2013
The FNT2013 survey covers the under-explored Celtic Sea with combined GeoStreamer and Towed Streamer EM data. The survey illuminates deep targets and defines key structures, with ties to key wells and fields such as Barryroe, Kinsale Head, Schull and Seven Heads.
This area was subject to a Jurassic to Early Cretaceous rifting event. A pervasive shallow Chalk limestone is present throughout. Prospectivity is mainly focused on sub-Chalk structural plays, with a main Cretaceous source rock, and additional source rock potential in the Jurassic.
The combination of GeoStreamer and Towed Streamer EM technology makes this dataset an excellent tool for further exploring this frontier area. Major improvements on vintage data include: well imaged sub-Chalk basin flanks and structures, with sharp imaging of pre-Cretaceous reflectors.

Specifications

Survey summary

  • Type: 2D
  • GeoStreamer®
  • Geometry: Standard
  • Size: 3 478 km
  • Acquisition year: 2013
  • Completion of processing: 2014
  • Water depth: 90-140 m
  • Shooting direction: Dip and strike
  • Vessel: Nordic Explorer

Acquisition parameters

  • Number of streamers: 1
  • Streamer length: 8 100 m
  • Shot interval: 18.75 m
  • Record length: 7 680 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 6.25 m
  • Bin dimensions (Processing): 12.5 m
  • Fold: 216

Processing

  • GeoStreamer wavefield separation
  • Optimal multiple attenuation
  • 3D anisotropic Kirchhoff pre-stack time migration
  • Bandwidth enhancing post-stack processing

Time products

  • EM frequency responses
  • 2.5 unconstrained EM inversion

Additional products

  • Electromagnetic horizontal bipole
  • Magnetics