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Facing the scale factor from core plugs, to full size core, to coarse grid cells. Mind the gap - Pre-Caspian Basin Carbonate reservoirs petrophysical characterizationNormal access

Authors: C. Albertini, F. Bigoni, V Tarantini, G Leoni, F Contento, A. Vercellino and A. Francesconi
Event name: First EAGE Reservoir Characterization and Modelling Workflows for Giant Carbonate Field Developments of the Middle East
Session: Petrophysical characterization of carbonates reservoir, rocks and fluids
Publication date: 18 February 2019
DOI: 10.3997/2214-4609.201900190
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 306.56Kb )
Price: € 20

e gap/discrepancy between these two scales of observation, core samples and grid cells, can be even larger than the one observed between plugs and full size cores. This fact makes the estimation of rock matrix permeability at the grid cells scale of observation very challenging and leading, sometimes, to wrong conclusions like an underestimation of the role of the rock matrix at the expense of an overestimation of the role of the fractures. A possible workflow to minimize the problem is the building of very fine-detail sector models customized for each EoD to describe the different geological heterogeneity according to both the available core data and the relevant geological conceptual model. Once petrophysically populated, the fine geological grid properties are up-scaled into the relevant coarse grid sector model to generate “effective properties” .

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