Aurora | PGS

Browse Basin - Australia - 2011

Aurora 3D GeoStreamer®

True broadband data acquired in the Caswell Sub-basin and Yampi Shelf of the Browse Basin
Website Map for Survey Aurora GeoStreamer MC3D
To produce a single continuous 3D GeoStreamer volume over the Browse Basin, from the depocentre of the gas-dominated Caswell Sub-basin to the oil-bearing Yampi Shelf area, while utilizing the latest acquisition, processing and imaging techniques.
The basin major prospective fairways lie within the Early-Middle Jurassic extensional phase, and the Late Jurassic-Cenozoic thermal subsidence phase.
True broadband Dual sensor 3D seismic data with pre-stack AVO/AVA fidelity.

Specifications

Survey summary

  • Type: 3D
  • GeoStreamer®
  • Geometry: Standard
  • Size: 7 719 sq.km
  • Acquisition year: 2011
  • Completion of processing: 2012
  • Water depth: 80-300 m
  • Shooting direction: North - South
  • Vessel: Ramform Explorer

Acquisition parameters

  • Number of streamers: 10
  • Streamer length: 6 000 m
  • Streamer separation: 100 m
  • Shot interval: 25 m
  • Record length: 7 168 ms
  • Sample rate: 2 ms

Processing

  • 2D surface related multiple elimination (SRME)
  • High resolution radon demultiple
  • XT / Tau-P Deconvolution
  • Kirchhoff prestack time migration (PSTM)

Time products

  • Angle stack near
  • Angle stack mid
  • Angle stack far
  • PSTM gathers
  • Stacking velocity
  • Migration velocity
  • Final post-stack time migration
  • Angle stack u-far