French geoscience firm CGG has started its largest seismic survey in the Asia-Pacific region, in the Northern Carnarvon basin on the North West Shelf of Western Australia.
The Davros 3D BroadSeis and BroadSourcemulti-client survey covers more than 11,000km², and is being undertaken by the Viking Vision vessel.
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The vessel will use CGG’s BroadSeis variable-depth streamer configuration and BroadSource synchronised broadband multi-level source.
It features 12 Sercel Sentinel RD 2Hz streamers, each measuring 8,250m. CGG will image the data using pre-stack depth migration (PSDM).
CGG said the Davros multi-client solution will address the imaging challenges of the Rankin Trend, such as the effects of the high-velocity carbonate overburden, steeply dipping structures, fault shadow and structural complexity at depth.
The factors will play an important role in optimal selection of drilling targets in the area. After completion, the Davros survey will provide the clear images of the area.
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By GlobalDataCGG CEO Jean-Georges Malcor said: "We believe Davros will reveal exciting new exploration opportunities, given its location adjacent to significant discoveries along the Rankin Trend.
"With the unique combination of BroadSeis with BroadSource and our advanced subsurface imaging technology, it will significantly enhance interpretation of the area’s Triassic to Lower Cretaceous reservoir units, which exceed 10km in thickness and are expected to host significant quantities of hydrocarbons, as has been confirmed by these previous discoveries."
Image: The Davros 3D BroadSeis and BroadSourcemulti-client survey will be undertaken by the Viking Vision vessel. Photo: courtesy of CGG.
