Crystal WATS A & B | PGS

Keathley Canyon & Garden Banks Area - USA - 2006

Crystal WATS A & B 3D

Wide-azimuth acquisition technology with modern imaging deliverables
Website Map for Survey Crystal I + II
This was the first PGS survey in the Gulf of Mexico to use wide-azimuth towed streamer technology.
Exploration efforts in this area have historically focused on deep subsalt Paleogene (also known as Lower Tertiary or Wilcox) sediments. The deliverables provide clients with superior imaging products for interpretation in the Deep Water Gulf of Mexico which is great exploration interest.
PGS addresses the challenges of subsalt imaging in the Crystal area with state-of-the-art processing, including PGS hyperTomo® for velocity model building and anisotropic PSDM with an RTM algorithm.

Specifications

Survey summary

  • Type: 3D
  • Geometry: WAZ
  • Size: 13542.6 sq.km
  • Acquisition year: 2006
  • Completion of processing: Reprocessed data available
  • Shooting direction: NE / SW
  • Vessels: Ramform Viking, Falcon Explorer, Ocean Explorer, Aquila Explorer

Acquisition parameters

  • Number of streamers: 10
  • Streamer length: 8100 m
  • Streamer separation: 120 m
  • Shot interval: 37.5 m
  • Record length: 14000 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 15 x 6.25 m
  • Bin dimensions (Processing): 30 x 30 m
  • Fold: 108

Processing

  • 3D surface related multiple elimination (SRME)
  • HyperTomo velocity model building
  • Reverse time migration (RTM)
  • Beam depth migration

Depth products

  • Final RTM PSDM stack
  • PSDM gathers
  • Beam Migration
  • Velocity model

Additional products

  • Demultiple Gathers