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AVA Analysis of Very High Resolution Seismic Data for the Study of Sediments in Lake Geneva, SwitzerlandNormal access

Authors: D. Hammami, A. Egreteau, F. Marillier and P. Thierry
Event name: 68th EAGE Conference and Exhibition incorporating SPE EUROPEC 2006
Session: AVO-AVA Analysis and Interpretation
Publication date: 12 June 2006
DOI: 10.3997/2214-4609.201401995
Organisations: SPE, EAGE
Language: English
Info: Extended abstract, PDF ( 1.61Mb )
Price: € 20

Summary:
This paper continues the studies presented in this conference by Loizou et al. (2006), where we have compared the AVO analyses from four wells in the west of Shetland: Foinaven oil well (204/24A-2); Laggan gas well (206/1-2) and two prospect wells (204/17-1 and Assynt 204/18-1). In this study, we apply the spectral decomposition to the data from these four wells and provide further evidence that there are also differences in the spectral characteristics between the four wells. While Foinaven and Laggan Class III AVO anomalies are consistent theoretical predictions for frequency-dependent AVO behaviours. However, the results from the Assynt prospect 204/18-1 and another prospect 204/17-1 show rather complicated behaviour in the iso-frequency sections that cannot be fully explained. In summary, though the amplitude anomalies seen in the two prospects were originally interpreted as to be similar to the Foinaven, but our study indicated they are different in both the AVO behaviour and the spectral characteristics.


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