GeoStreamer PURE

• 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

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

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 and led to the formation of the main Caswell and Barcoo sub-basin depocenters. Subsequently, it has undergone multiple episodes of extension, subsidence, and inversion.

Giant, producing gas fields lie within the Caswell sub-basin, such as  Ichthys (12.8 TCF) and Prelude (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.