Aurora Ichthys Merge MC3D | PGS

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Browse Basin - Australia - 2011/12

Aurora Ichthys Merge MC3D 3D GeoStreamer

New PSDM reprocessing of the Aurora and Ichthys MC3D surveys in the highly prospective Browse Basin
Website Map for Survey Aurora Ichthys Merge MC3D
GeoStreamer acquired data newly reprocessed with the latest PSDM FWI workflow to create a contiguous, high resolution 3D volume over the Ichthys gas field and surrounding acreage within the Browse Basin, from the depocentre of the gas-dominated Caswell Sub-basin to the oil-bearing Yampi Shelf area
The prospective basin fairways lie within the Early-Middle Jurassic extensional phase, and the Late Jurassic-Cenozoic thermal subsidence phase.
True broadband GeoStreamer dual-sensor 3D seismic data acquisition combined with the latest PSDM FWI reprocessing workflow.

Specifications

Survey summary

  • Type: 3D
  • GeoStreamer
  • Geometry: Standard
  • Size: 9320 sq.km
  • Acquisition year: 2011/12
  • Completion of processing: 2019
  • Reprocessing: Yes
  • Water depth: 80-300 m
  • Vessel: Ramform Explorer

Acquisition parameters

  • Number of streamers: 10
  • Streamer length: 6 000 & 7 500 m
  • Streamer separation: 100 & 75 m
  • Shot interval: 25 & 18.75 m
  • Record length: 7 168 ms
  • Sample rate: 2 ms

Processing

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

Depth products

  • Final Kirchhoff PSDM stack
  • PSDM gathers
  • Velocity model
  • Final Kirchhoff PSDM angle stacks

Time products

  • Final Kirchhoff PSTM Stack
  • Angle stack near
  • Angle stack mid
  • Angle stack far
  • Angle stack u-far
  • PSTM gathers
  • Stacking velocity
  • Migration velocity