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Impact of microscopic heterogeneities of rock on elastic parameters in unconsolited sandstone reservoir

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Brigitte Doligez
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Hélène Beucher

Résumé

The impact of microscopic rock heterogeneities on elastic properties in an unconsolidated sandstone reservoir in the Orinoco Heavy Oil Belt in Eastern Venezuela is studied at 3 wells using rock physics models. Differences in grain and pore sizes and the presence of shale/clay and cement, lead to differences in elastic properties values at same porosity. This allows to detect two different consolidation levels in the reservoir: (1) unconsolidated and (2) weakly consolidated due to cement and smaller grains/pores, where the first one has better rock quality. Being able to detect the two consolidation levels proves the interest of rock physics modelling in our case as tool to relate geology and seismic and to perform a quantitative seismic interpretation.
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Dates et versions

hal-01540791 , version 1 (16-06-2017)

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  • HAL Id : hal-01540791 , version 1

Citer

Jorge Luis Reveron Becerra, C. Joseph,, Brigitte Doligez, Hélène Beucher. Impact of microscopic heterogeneities of rock on elastic parameters in unconsolited sandstone reservoir. 74th European Association of Geoscientists and Engineers Conference and Exhibition 2012 Incorporating SPE EUROPEC 2012: Responsibly Securing Natural Resources , Jun 2012, Copenhagen, Denmark. pp.1442-1446. ⟨hal-01540791⟩
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