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15 results on '"Tueckmantel, Christian"'

7. Paleofluid Evolution In Fault-Damage Zones: Evidence From Fault–Fold Interaction Events In the Jabal Qusaybah Anticline (Adam Foothills, North Oman)

Author

Mozafari, Mahtab, primary, Swennen, Rudy, additional, Balsamo, Fabrizio, additional, Clemenzi, Luca, additional, Storti, Fabrizio, additional, El Desouky, Hamdy, additional, Vanhaecke, Frank, additional, Tueckmantel, Christian, additional, Solum, John, additional, and Taberner, Conxita, additional

Published
2015
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8. Photogrammetric digital outcrop reconstruction, visualization with textured surfaces, and three-dimensional structural analysis and modeling: Innovative methodologies applied to fault-related dolomitization (Vajont Limestone, Southern Alps, Italy)

Author

Bistacchi, Andrea, primary, Balsamo, Fabrizio, additional, Storti, Fabrizio, additional, Mozafari, Mahtab, additional, Swennen, Rudy, additional, Solum, John, additional, Tueckmantel, Christian, additional, and Taberner, Conxita, additional

Published
2015
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13. Two-phase fluid flow properties of cataclastic fault rocks: Implications for CO2 storage in saline aquifers.

Author

Tueckmantel, Christian, Fisher, Quentin J., Manzocchi, Tom, Skachkov, Sergey, and Grattoni, Carlos A.

Subjects
*GEOLOGIC faults, *FLUID dynamics, *PERMEABILITY, *CATACLASTIC rocks, *SANDSTONE, *CARBON dioxide mitigation
Abstract

Fault rocks can function as barriers to subsurface fluid flow and affect the storage of CO2 in geological structures. Even though flow across faults often involves more than one fluid phase, it is typically modeled using only single-phase functions due to a lack of fault rock relative permeability data and complexities in incorporating two-phase flow properties into flow simulations. Here we present two-phase fluid flow data for cataclastic fault rocks in porous sandstone from the 90-Fathom fault (northeast England). The study area represents a field analogue for North Sea saline aquifers of Permian-Triassic age that are currently being considered for CO2 storage. We use the experimental data to populate a synthetic model of a faulted saline aquifer to assess the impact of these fault rocks on CO2 injection. We show that even fault rocks with low clay contents and very limited quartz cementation can act as major baffles to the flow of a non-wetting phase if realistic two-phase properties are taken into account. Consequently, pressure may increase far more rapidly in the storage compartment during CO2 injection than anticipated based on models that only incorporate absolute fault rock permeabilities. To avoid high pressures, which may lead to hydrofracturing and CO2 leakage, either more complex injection strategies need to be adopted or seismic data acquired to ensure the absence of faults in aquifers selected for CO2 storage. [ABSTRACT FROM AUTHOR]

Published
2012
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14. Simulation of end-member scenarios of density-driven flow: prediction of dolostone geobody dimensions using COMSOL

Author

Pal, Mayur, Taberner, Conxita, and Tueckmantel, Christian

Abstract

Density-driven flows occur in nature and are initiated by density contrast. Salinity and temperature differences are remarkably effective in initiating density-driven flow, which may instigate convective flow. In turn, convective flow is seen by many authors as key for solute and mass transport, which are important processes controlling dolomitization.Two key dolomitization models rely on the application of density-driven flow concepts: (1) dolomitization by shallow or deep reflux of hypersaline brines in coastal ramp settings; and (2) fault-related dolomitization by the inflow of deep-seated fluids. These dolomitization scenarios are evaluated in this paper to infer plausible architecture, geobody dimensions and rock property distributions of dolomitic reservoirs. Since dolomitization processes may also alter porosity and permeability of the host lithology, changes in these properties are also discussed.This contribution focuses on the application of numerical models to assess the applicability of specific dolomitization models/mechanisms in different geological scenarios. We discuss end-member results of flow simulations using the numerical code COMSOL. This software has been chosen to model these processes as it provides a multiphysics framework for solving coupled systems, as in the case of brine reflux and geothermal convection.Our results provide a useful insight to the dynamic propagation of the limestone–dolomite front through fingering effects. The dolomite geobodies/patterns generated with the help of numerical simulation compare favourably with dolomite geobodies seen in outcrops. This study shows that during the dolomitization process the shape, the extent of propagation of the limestone–dolomite front and the rock properties (porosity and permeability) of the dolomitized reservoir are mainly influenced by the ‘contaminant’ source initiating dolomitization: that is, the magnesium-rich brine density in the case of brine reflux and the heat flux intensity in the case of geothermal reflux circulation.

Published
2015
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15. Program FFlexCom - High Frequency Flexible Bendable Electronics for Wireless Communication Systems

Author

Meister, Tilo, Ellinger, Frank, Bartha, Johann W., Berroth, Manfred, Burghartz, Joachim, Claus, Martin, Frey, Lothar, Gagliardi, Alessio, Grundmann, Marius, Hesselbarth, Jan, Klauk, Hagen, Leo, Karl, Lugli, Paolo, Mannsfeld, Stefan, Manoli, Yiannos, Negra, Renato, Daniel Neumaier, Pfeiffer, Ullrich, Riedl, Thomas, Scheinert, Susanne, Scherf, Ullrich, Thiede, Andreas, Troester, Gerhard, Vossiek, Martin, Weigel, Robert, Wenger, Christian, Golzar, Alavi, Becherer, Markus, Alvarado, Carlos, Darwish, Mohammed, Ellinger, Martin, Fan, Chun-Yu, Fritsch, Martin, Grotjahn, Frank, Gunia, Marco, Haase, Katherina, Hillger, Philipp, Ishida, Koichi, Jank, Michael, Knobelspies, Stefan, Kuhl, Matthias, Lupina, Grzegorz, Naghadeh, Shabnam Mohammadi, Muenzenrieder, Niko, Oezbek, Sefa, Rasteh, Mahsa, Salvatore, Giovanni A., Schruefer, Daniel, Strobel, Carsten, Theisen, Manuel, Tueckmantel, Christian, Wenckstern, Holger, Wang, Zhenxing, Zhang, Zhipeng, and IEEE

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