4D seismic spectral decomposition over a presalt carbonate reservoir: A feasibility study
- Marcos Grochau (PETROBRAS) | Pavel Jilinski (GeoTeric)
- Document ID
- Society of Exploration Geophysicists
- 2016 SEG International Exposition and Annual Meeting, 16-21 October, Dallas, Texas
- Publication Date
- Document Type
- Conference Paper
- 2016. Society of Exploration Geophysicists
- Decomposition, 4D, Spectral, Carbonate
- 3 in the last 30 days
- 73 since 2007
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In this paper, we investigate the use of spectral decomposition and facies classification on time-lapse data related to a Brazilian pre-salt carbonate reservoir. Synthetic seismic data were generated through petro-elastic modeling (PEM), which is based on a representative geological model and flow simulator dynamic properties. Reservoir pressure and saturation distributions are used that corresponds to periods of time, in which, real time-lapse seismic data will be available. The spectral decomposition method used, is based on a modified matching pursuit algorithm. At this stage, we focus on the interpretation of the spectral decomposition, mainly on geometric effects. We conclude that the use of spectral decomposition on 4D seismic data enhances reservoir heterogeneities and correlates with water saturation changes.
Presentation Date: Monday, October 17, 2016
Start Time: 3:45:00 PM
Location: Lobby D/C
Presentation Type: POSTER
|File Size||1 MB||Number of Pages||5|
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