FlexR IV | PGS

Garden Banks, East & West Cameron - USA - 1997 - 2000

FlexR IV 3D

Full volume 3D depth migration reprocessing project providing multiple depth products
Website Map for Survey FlexR IV
The Flex Trend is a contiguous area covering ~1500 OCS blocks, comprised of ten individual PSDM projects, reprocessed from 19 baseline surveys.
Exploration efforts on the shelf have historically focused on shallow targets. FlexR reveals significant further exploration potential in the lower Miocene deep gas play. Depth imaging is required due to the presence of salt.
The FlexR reprocessing project provides an updated inventory of detailed 3D seismic imaging over the Flex Trend. Better salt and subsalt imaging and enhanced fault definition are achieved through detailed velocity modeling, Kirchhoff, and wave equation prestack depth migration.

Specifications

Survey summary

  • Type: 3D
  • Geometry: Standard
  • Size: 4156 sq.km
  • Acquisition year: 1997 - 2000
  • Completion of processing: 2010
  • Reprocessing: Yes
  • Shooting direction: E - W / N - S
  • Vessel: Shell America, Betty Chouest, Ocean Explorer, Walther Herwig, Falcon Explorer, New Venture, Bessie Chouest, Gary Chouest, Edison Chouest, Elda Chouest, Kondor

Acquisition parameters

  • Number of streamers: 3 / 4
  • Streamer length: 6000 / 8000 m
  • Shot interval: 30.5 / 31.25 m
  • Record length: 9600 / 10750 / 9000 / 10500 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 8 x 46 / 12.5 x 40 m
  • Bin dimensions (Processing): 16 x 23 / 12.5 x 20 m
  • Fold: 34 / 48

Processing

  • Kirchhoff Pre-Stack Depth Migration (PSDM)
  • Beam Depth Migration

Depth products

  • Final Kirchhoff PSDM Stack
  • Final BEAM PSDM Stack
  • Final WEM PSDM Stack
  • PSDM Gathers
  • Velocity Model