2016-10-312014@inproceedings{Osorno_etal_2014_DigitRock, author={M. C. Osorno and D. Uribe and E. H. Saenger and C. Madonna and H. Steeb and O. Ruiz.}, title={Numerical estimation of carbonate properties using a digital rock physics workflow.}, booktitle={76th EAGE Meeting}, year={2014}, editor={}, address={Amsterdam, Netherlands}, pages={}, note={}, url={}, document_type={Extended Abstract.}, month={16-19 June}, publisher ={}, organization={European Association of Geoscientists and Engineers}, note={}, abstract ={In this paper we investigate a dry carbonate specimen (Hauptmuschelkalk) that originates from a core drilled in northern Switzerland. The corresponding CT-image raw-data is taken from Madonna et al. (2013). The voxel size is 0.38m3. Experimental results indicate a porosity of 4.2 \%, a permeability of 4*10-4 mD and a p-wave velocity from 5100 m/s (0 MPa confining pressure) to 6100 m/s (150 MPa confining pressure).} }http://hdl.handle.net/10784/9569Digital rock physics combines modern imaging with advanced numerical simulations to analyze the physical properties of rocks -- In this paper we suggest a special segmentation procedure which is applied to a carbonate rock from Switzerland -- Starting point is a CTscan of a specimen of Hauptmuschelkalk -- The first step applied to the raw image data is a nonlocal mean filter -- We then apply different thresholds to identify pores and solid phases -- Because we are aware of a nonneglectable amount of unresolved microporosity we also define intermediate phases -- Based on this segmentation determine porositydependent values for the pwave velocity and for the permeability -- The porosity measured in the laboratory is then used to compare our numerical data with experimental data -- We observe a good agreement -- Future work includes an analytic validation to the numerical results of the pwave velocity upper bound, employing different filters for the image segmentation and using data with higher resolutionengRocas - Popiedades físicasinfo:eu-repo/semantics/conferencePaperinfo:eu-repo/semantics/closedAccessMATERIALES POROSOSTOMOGRAFÍAIMAGEN TRIDIMENSIONAL EN DISEÑOPERMEABILIDADCONDUCTIVIDAD ELÉCTRICAELASTICIDADANÁLISIS NUMÉRICOMÉTODOS DE SIMULACIÓNPROCESAMIENTO DIGITAL DE IMÁGENESPorous materialsTomographyDesign imagingPermeabilityElectric conductivityElasticityNumerical analysisSimulation methodsImage processing - Digital techniquesPorous materialsTomographyDesign imagingPermeabilityElectric conductivityElasticityNumerical analysisSimulation methodsImage processing - Digital techniquesAcceso cerrado2016-10-31Osorno, M.Uribe, D.Saenger, E.H.Madonna, C.Steeb, H.Ruíz, Ó.10.3997/2214-4609.20140655