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A Broadband Marine CSEM Demonstration Survey to Map the Uranus Salt StructureNormal access

Authors: M. Vöge, A. A. Pfaffhuber, K. Hokstad and B. Fotland
Event name: 72nd EAGE Conference and Exhibition incorporating SPE EUROPEC 2010
Session: EM 3 (EAGE)
Publication date: 14 June 2010
DOI: 10.3997/2214-4609.201400740
Organisations: SPE, EAGE
Language: English
Info: Extended abstract, PDF ( 1.45Mb )
Price: € 20

To apply a broad spectrum of signal frequencies for a marine electromagnetic survey (0.01 Hz to 500 Hz) is a unique way for detailed mapping of geology in conjunction to hydrocarbon exploration. We present results from a demonstration research survey over the Uranus salt structure (Nordkapp Basin, Barents Sea) involving purpose built broadband receiver systems containing electric and magnetic field sensors as well as four component seismometers. EM data interpretation in tight combination with seismic models indicates a deep salt body rather than the shallow diapir interpreted from seismic alone. The deep salt body was confirmed by an exploration well. The positive results of this proof of concept survey triggered numerous commercial surveys with similar configurations.

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