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  Effect of microvariability on electrical rock properties: investigations based on microstructure simulations

Börner, J. H., Menzel, P., Scheunert, M. (2024): Effect of microvariability on electrical rock properties: investigations based on microstructure simulations. - In: Börner, J., Yogeshwar, P. (Eds.), - Protokoll über das 30. Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung: St. Marienthal, 25. September - 29. September 2023, 30. Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung (St. Marienthal 2023), 29-29, 1 p.

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5026097 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5026097_3
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 Creators:
Börner, Jana H.1, Author
Menzel, Peter1, Author
Scheunert, Mathias1, Author
Affiliations:
130. Kolloquium, 2023, Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung EMTF, External Organizations, ou_5026038              

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 Abstract: In petrophysics, physical rock properties are typically established through laboratory measurements of individual samples. These measurements predominantly relate to the specific sample and can be challenging to associate with the rock as a whole since the physical attributes are heavily reliant on the microstructure, which can vary significantly in different areas. Thus, the obtained values have limited applicability to the entirety of the original rock mass. To examine the dependence of petrophysical measurements based on the variable microstructure, we generate sets of random microstructure representations for a sample, taking into account macroscopic parameters such as porosity and mean grain size. We show that the methodology can adequately mimic the physical behavior of real rocks, showing consistent emulation of the dependence of electrical conductivity on connected porosity according to Archie's law across different types of pore space (micro-fracture, inter-granular, and vuggy, oomoldic pore space). Furthermore, properties such as the internal surface area and its fractal dimension as well as the electrical tortuosity are accessible for the random microstructures and show reasonable behavior. Finally, the possibilities, challenges and meshing strategies for extending the methodology to 3D microstructures are discussed.

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Language(s): eng - English
 Dates: 20242024
 Publication Status: Finally published
 Pages: 1
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
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Title: 30. Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung
Place of Event: St. Marienthal
Start-/End Date: 2023-09-25 - 2023-09-29

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Title: Protokoll über das 30. Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung: St. Marienthal, 25. September - 29. September 2023
Source Genre: Proceedings
 Creator(s):
Börner, Jana1, 2, Editor
Yogeshwar, Pritam2, 3, Editor
Affiliations:
1 Technische Universität- Bergakademie Freiberg , ou_persistent22            
2 30. Kolloquium, 2023, Schmucker-Weidelt-Kolloquium für Elektromagnetische Tiefenforschung EMTF, External Organizations, ou_5026038            
3 Universität zu Köln, ou_persistent22            
Publ. Info: Potsdam : Deutsche Geophysikalische Gesellschaft e. V.
Pages: 146 Volume / Issue: 30 Sequence Number: 11 Start / End Page: 29 - 29 Identifier: ISSN: 2190-7021