Spectrum releases Carnarvon dataset

Spectrum ASB has released a new, large-scale 3D multi-client seismic merge dataset.

Offshore staff

SURRY, UK – Spectrum ASB has released a new, large-scale 3D multi-client seismic merge dataset. It is an amalgamation of surveys that cover more than 30,000 sq km of the Carnarvon basin off the west and northwest coast of Western Australia.

Spectrum’s dataset covers several open blocks included in the 2010 / 2011 bid round. A wide range of play types is found within this basin, including rollover anticlines and fault blocks associated with antithetic faults, stratigraphic traps, pinchouts and onlap plays, says Spectrum.

Most hydrocarbons found in the basin are from Upper Jurassic Dingo Claystone, with possible input from other sources. In the outboard Rankin Platform, giant gas accumulations as well as oil and gas accumulations along the inboard eastern Gipsy-Rose-Lee Trend are sourced from a delta-based Triassic to Middle Jurassic sequence.

The oil reservoir is primarily in the Windalia sandstone of the Muderong shale and the Lower Cretaceous Barrow Group. Late Cretaceous and middle Miocene faulted anticlines provide structural traps.

10/04/2010

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