Browse Basin

High-quality merged Geostreamer 3D data with delineation of the abundant prospectivity to drive infrastructure lead exploration.

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We are building a contiguous 18 500 sq. km of Geostreamer PURE over a major production hub and its surroundings within the Caswell sub-basin of Browse Basin.

The area around the producing Ichthys-Prelude fields is particularly prospective. Key discoveries here include Crown, Argus, Lasseter, Basset West, Burnside, Concerto and Mimia. Plenty more undrilled prospects can be identified on the data.

Key Benefits
  • Regional-scale in 18 500 sq. km of GeoStreamer PURE data
  • Numerous nearfield exploration opportunities (ILX)
  • Enhanced imaging of the Cretaceous-Jurassic and Permo-Triassic plays
  • Evaluate farm-in opportunities based on regional context and detailed prospectivity
Geology

The Caswell sub-basin is a major depocenter within the Browse Basin, situated entirely offshore in the northern region of the Australian North West Shelf. 

The Browse Basin is bounded to the southeast by the Australian craton, the Bonaparte Basin (Vulcan sub-basin) to the northeast, and the Roebuck Basin (offshore Canning Basin) to the southwest. The basin and its component structures were formed as extensional half-grabens in the Paleozoic, leading to the formation of the main Caswell and Barcoo sub-basin depocenters, however, it has subsequently undergone multiple episodes of extension, subsidence and inversion.

Comprised within the Caswell sub-basin are the giant producing Ichthys gas field (12.8 TCF) and Prelude gas field (2-3 TCF). The area most recently saw success with the Lasseter-1 discovery. Browse Basin’s major prospective fairways lie within the Early-Middle Jurassic extensional phase (Plover-Montara Fm), and the Late Jurassic-Cenozoic thermal subsidence phase (Vulcan-Brewster Fm). 

Imaging

Browse Basin GeoStreamer PURE is created by combining MultiClient 3D GeoStreamer data from Caswell, Ichthys, and Aurora. The datasets have been merged and depth processed from field tapes, using imaging workflows such as separated wavefield imaging (PGS SWIM), full-waveform inversion (FWI), reflection tomography (hyperTomo), and advanced depth migration algorithms.

 

This GeoStreamer PURE depth section shows multi-stacked targets at Callovian and Valanginian levels
This GeoStreamer PURE depth section shows multi-stacked targets at Callovian and Valanginian levels