Articles | Volume 7, issue 4
https://doi.org/10.5194/se-7-1109-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/se-7-1109-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Method article
| 
19 Jul 2016
Method article |
| 19 Jul 2016
Simulating stress-dependent fluid flow in a fractured core sample using real-time X-ray CT data
Tobias Kling
CORRESPONDING AUTHOR
Institute for Applied Geosciences (AGW), Karlsruhe Institute of
Technology (KIT), Karlsruhe, 76131, Germany
Da Huo
School of Earth Sciences, Stanford University, Stanford, CA
94305-2210, USA
Jens-Oliver Schwarz
Institute for Geosciences, Johannes Gutenberg University of Mainz,
Mainz, 55128, Germany
Math2Market GmbH, Kaiserslautern, 67657, Germany
Frieder Enzmann
Institute for Geosciences, Johannes Gutenberg University of Mainz,
Mainz, 55128, Germany
Sally Benson
School of Earth Sciences, Stanford University, Stanford, CA
94305-2210, USA
Philipp Blum
Institute for Applied Geosciences (AGW), Karlsruhe Institute of
Technology (KIT), Karlsruhe, 76131, Germany
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Christopher Wilson, Mark Peternell, Filomena Salvemini, Vladimir Luzin, Frieder Enzmann, Olga Moravcova, and Nicholas Hunter
EGUsphere, https://doi.org/10.5194/egusphere-2023-70, https://doi.org/10.5194/egusphere-2023-70, 2023
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As the temperature increases within a deforming ice aggregate, composed of deuterium (D2O) ice and water (H2O) ice, a set of meltwater segregations are produced. These are composed of H2O and HDO and are located in conjugate shear bands and in compaction bands which accommodate the deformation and weaken the ice aggregate. This has major implications for the passage of meltwater in ice sheets and the formation of the layering recognized in glaciers.
José M. Bastías Espejo, Andy Wilkins, Gabriel C. Rau, and Philipp Blum
Geosci. Model Dev., 14, 6257–6272, https://doi.org/10.5194/gmd-14-6257-2021, https://doi.org/10.5194/gmd-14-6257-2021, 2021
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The hydraulic and mechanical properties of the subsurface are inherently heterogeneous. RHEA is a simulator that can perform couple hydro-geomechanical processes in heterogeneous porous media with steep gradients. RHEA is able to fully integrate spatial heterogeneity, allowing allocation of distributed hydraulic and geomechanical properties at mesh element level. RHEA is a valuable tool that can simulate problems considering realistic heterogeneity inherent to geologic formations.
Sina Hale, Xavier Ries, David Jaeggi, and Philipp Blum
Solid Earth, 12, 1581–1600, https://doi.org/10.5194/se-12-1581-2021, https://doi.org/10.5194/se-12-1581-2021, 2021
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The construction of tunnels leads to substantial alterations of the surrounding rock, which can be critical concerning safety aspects. We use different mobile methods to assess the hydromechanical properties of an excavation damaged zone (EDZ) in a claystone. We show that long-term exposure and dehydration preserve a notable fracture permeability and significantly increase strength and stiffness. The methods are suitable for on-site monitoring without any further disturbance of the rock.
Fabien Koch, Kathrin Menberg, Svenja Schweikert, Cornelia Spengler, Hans Jürgen Hahn, and Philipp Blum
Hydrol. Earth Syst. Sci., 25, 3053–3070, https://doi.org/10.5194/hess-25-3053-2021, https://doi.org/10.5194/hess-25-3053-2021, 2021
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In this study, we address the question of whether groundwater fauna in an urban area is natural or affected in comparison to forested land. We find noticeable differences in the spatial distribution of groundwater species and abiotic parameters. An ecological assessment reveals that conditions in the urban area are mainly not good. Yet, there is no clear spatial pattern in terms of land use and anthropogenic impacts. These are significant findings for conservation and usage of urban groundwater.
Arne Jacob, Markus Peltz, Sina Hale, Frieder Enzmann, Olga Moravcova, Laurence N. Warr, Georg Grathoff, Philipp Blum, and Michael Kersten
Solid Earth, 12, 1–14, https://doi.org/10.5194/se-12-1-2021, https://doi.org/10.5194/se-12-1-2021, 2021
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In this work, we combined different imaging and experimental measuring methods for analysis of cross-scale effects which reduce permeability of tight reservoir rocks. Simulated permeability of digital images of rocks is often overestimated, which is caused by non-resolvable clay content within the pores of a rock. By combining FIB-SEM with micro-XCT imaging, we were able to simulate the true clay mineral abundance to match experimentally measured permeability with simulated permeability.
Gabriel C. Rau, Mark O. Cuthbert, R. Ian Acworth, and Philipp Blum
Hydrol. Earth Syst. Sci., 24, 6033–6046, https://doi.org/10.5194/hess-24-6033-2020, https://doi.org/10.5194/hess-24-6033-2020, 2020
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This work provides an important generalisation of a previously developed method that quantifies subsurface barometric efficiency using the groundwater level response to Earth and atmospheric tides. The new approach additionally allows the quantification of hydraulic conductivity and specific storage. This enables improved and rapid assessment of subsurface processes and properties using standard pressure measurements.
Chaojie Cheng, Sina Hale, Harald Milsch, and Philipp Blum
Solid Earth, 11, 2411–2423, https://doi.org/10.5194/se-11-2411-2020, https://doi.org/10.5194/se-11-2411-2020, 2020
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Fluids (like water or gases) within the Earth's crust often flow and interact with rock through fractures. The efficiency with which these fluids may flow through this void space is controlled by the width of the fracture(s). In this study, three different physical methods to measure fracture width were applied and compared and their predictive accuracy was evaluated. As a result, the mobile methods tested may well be applied in the field if a number of limitations and requirements are observed.
Swarup Chauhan, Kathleen Sell, Wolfram Rühaak, Thorsten Wille, and Ingo Sass
Geosci. Model Dev., 13, 315–334, https://doi.org/10.5194/gmd-13-315-2020, https://doi.org/10.5194/gmd-13-315-2020, 2020
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We present CobWeb 1.0, a graphical user interface for analysing tomographic images of geomaterials. CobWeb offers different machine learning techniques for accurate multiphase image segmentation and visualizing material specific parameters such as pore size distribution, relative porosity and volume fraction. We demonstrate a novel approach of dual filtration and dual segmentation to eliminate edge enhancement artefact in synchrotron-tomographic datasets and provide the computational code.
Gabriel C. Rau, Vincent E. A. Post, Margaret Shanafield, Torsten Krekeler, Eddie W. Banks, and Philipp Blum
Hydrol. Earth Syst. Sci., 23, 3603–3629, https://doi.org/10.5194/hess-23-3603-2019, https://doi.org/10.5194/hess-23-3603-2019, 2019
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The flow of water is often inferred from water levels and gradients whose measurements are considered trivial despite the many steps and complexity of the instruments involved. We systematically review the four measurement steps required and summarise the systematic errors. To determine the accuracy with which flow can be resolved, we quantify and propagate the random errors. Our results illustrate the limitations of current practice and provide concise recommendations to improve data quality.
Susanne A. Benz, Peter Bayer, Gerfried Winkler, and Philipp Blum
Hydrol. Earth Syst. Sci., 22, 3143–3154, https://doi.org/10.5194/hess-22-3143-2018, https://doi.org/10.5194/hess-22-3143-2018, 2018
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Climate change is one of the most pressing challenges modern society faces. Increasing temperatures are observed both above ground and, as discussed here, in the groundwater – the source of most drinking water. Within Austria average temperature increased by 0.7 °C over the past 20 years, with an increase of more than 3 °C in some wells and temperature decrease in others. However, these extreme changes can be linked to local events such as the construction of a new drinking water supply.
Daniel Schweizer, Philipp Blum, and Christoph Butscher
Solid Earth, 8, 515–530, https://doi.org/10.5194/se-8-515-2017, https://doi.org/10.5194/se-8-515-2017, 2017
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Any 3-D geological model is subject to uncertainty. We applied the concept of information entropy in order to visualize and quantify changes in uncertainty between geological models based on different types of geological input data. Furthermore, we propose two measures, the city-block and the Jaccard distance, to directly compare dissimilarities between models. The presented approach helps to locate areas of uncertainty within the model domain and quantify model improvements due to added data.
Kathleen Sell, Erik H. Saenger, Andrzej Falenty, Marwen Chaouachi, David Haberthür, Frieder Enzmann, Werner F. Kuhs, and Michael Kersten
Solid Earth, 7, 1243–1258, https://doi.org/10.5194/se-7-1243-2016, https://doi.org/10.5194/se-7-1243-2016, 2016
Georg H. Grathoff, Markus Peltz, Frieder Enzmann, and Stephan Kaufhold
Solid Earth, 7, 1145–1156, https://doi.org/10.5194/se-7-1145-2016, https://doi.org/10.5194/se-7-1145-2016, 2016
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This study improves our understanding of the evolution of pores in shales for modelling transport properties. 3-D microscopy on early and postmature Posidonia Shales showed similar porosities and pore size distributions. Large isolated pore clusters are within carbonates and clay minerals. Pores form during maturation in the postmature-matrix-filling organic matter. Modelled permeabilities are lowest perpendicular to bedding. They decrease with increasing maturity and are comparable to experimental data.
Steven Henkel, Dieter Pudlo, Frieder Enzmann, Viktor Reitenbach, Daniel Albrecht, Leonhard Ganzer, and Reinhard Gaupp
Solid Earth, 7, 917–927, https://doi.org/10.5194/se-7-917-2016, https://doi.org/10.5194/se-7-917-2016, 2016
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This study investigates the experimentally induced effects of CO2 storage on underground reservoir sandstones by applying high-resolution computer tomography and standard petrophysical methods. The results of digital rock physic calculations derived from the µ-CT scans are compared with measurements achieved by the standard methods. Both approaches lead to similar results for coarse- and medium-grained sandstones but differ for fine-grained sediments.
Faisal Khan, Frieder Enzmann, and Michael Kersten
Solid Earth, 7, 481–492, https://doi.org/10.5194/se-7-481-2016, https://doi.org/10.5194/se-7-481-2016, 2016
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X-ray microtomography image processing involves artefact reduction and image segmentation. The beam-hardening artefact is removed, applying a new algorithm, which minimizes the offsets of the attenuation data points. For the segmentation, we propose using a non-linear classifier algorithm. Statistical analysis was performed to quantify the improvement in multi-phase classification of rock cores using and without using our advanced beam-hardening correction algorithm.
M. Huebsch, F. Grimmeisen, M. Zemann, O. Fenton, K. G. Richards, P. Jordan, A. Sawarieh, P. Blum, and N. Goldscheider
Hydrol. Earth Syst. Sci., 19, 1589–1598, https://doi.org/10.5194/hess-19-1589-2015, https://doi.org/10.5194/hess-19-1589-2015, 2015
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Two different in situ spectrophotometers, which were used in the field to determine highly time resolved nitrate-nitrogen (NO3-N) concentrations at two distinct spring discharge sites, are compared: a double and a multiple wavelength spectrophotometer. The objective of the study was to review the hardware options, determine ease of calibration, accuracy, influence of additional substances and to assess positive and negative aspects of the two sensors as well as troubleshooting and trade-offs.
K. Menberg, P. Blum, B. L. Kurylyk, and P. Bayer
Hydrol. Earth Syst. Sci., 18, 4453–4466, https://doi.org/10.5194/hess-18-4453-2014, https://doi.org/10.5194/hess-18-4453-2014, 2014
M. Huebsch, O. Fenton, B. Horan, D. Hennessy, K. G. Richards, P. Jordan, N. Goldscheider, C. Butscher, and P. Blum
Hydrol. Earth Syst. Sci., 18, 4423–4435, https://doi.org/10.5194/hess-18-4423-2014, https://doi.org/10.5194/hess-18-4423-2014, 2014
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Jianwei Ren, Lei Song, Qirui Wang, Haipeng Li, Junqi Fan, Jianhua Yue, and Honglei Shen
EGUsphere, https://doi.org/10.5194/egusphere-2022-1118, https://doi.org/10.5194/egusphere-2022-1118, 2022
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A THMC multi field rock resistivity test system is developed, which has the functions of rock triaxial test and resistivity test under the condition of high and low temperature, high pressure and high salinity water seepage. A sealing method to prevent the formation of a water film on the side of the specimen is proposed based on the characteristics of the device. The device is suitable for studying the relationship between rock mechanical properties and resistivity in complex environments.
Lauren Kedar, Clare E. Bond, and David K. Muirhead
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Raman spectroscopy of carbon-bearing rocks is often used to calculate peak temperatures and therefore burial history. However, strain is known to affect Raman spectral parameters. We investigate a series of deformed rocks that have been subjected to varying degrees of strain and find that there is a consistent change in some parameters in the most strained rocks, while other parameters are not affected by strain. We apply temperature calculations and find that strain affects them differently.
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Triaxial compression tests at different effective stresses allow for analysing the deformation behaviour of Opalinus Clay, the potential host rock for nuclear waste in Switzerland. We conducted microstructural investigations of the deformed samples to relate the bulk hydro-mechanical behaviour to the processes on the microscale. Results show a transition from brittle- to more ductile-dominated deformation. We propose a non-linear failure envelop associated with the failure mode transition.
Zhilin Ye, Dawei Fan, Bo Li, Qizhe Tang, Jingui Xu, Dongzhou Zhang, and Wenge Zhou
Solid Earth, 13, 745–759, https://doi.org/10.5194/se-13-745-2022, https://doi.org/10.5194/se-13-745-2022, 2022
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Eclogite is a major factor in the initiation of delamination during orogenic collision. According to the equations of state of main minerals of eclogite under high temperature and high pressure, the densities of eclogite along two types of delamination in Tibet are provided. The effects of eclogite on the delamination process are discussed in detail. A high abundance of garnet, a high Fe content, and a high degree of eclogitization are more conducive to instigating the delamination.
Tiange Xing, Hamed O. Ghaffari, Ulrich Mok, and Matej Pec
Solid Earth, 13, 137–160, https://doi.org/10.5194/se-13-137-2022, https://doi.org/10.5194/se-13-137-2022, 2022
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Geological carbon sequestration using basalts provides a solution to mitigate the high CO2 concentration in the atmosphere. Due to the long timespan of the GCS, it is important to understand the long-term deformation of the reservoir rock. Here, we studied the creep of basalt with fluid presence. Our results show presence of fluid weakens the rock and promotes creep, while the composition only has a secondary effect and demonstrate that the governing creep mechanism is subcritical microcracking.
Lisa Winhausen, Jop Klaver, Joyce Schmatz, Guillaume Desbois, Janos L. Urai, Florian Amann, and Christophe Nussbaum
Solid Earth, 12, 2109–2126, https://doi.org/10.5194/se-12-2109-2021, https://doi.org/10.5194/se-12-2109-2021, 2021
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An experimentally deformed sample of Opalinus Clay (OPA), which is being considered as host rock for nuclear waste in Switzerland, was studied by electron microscopy to image deformation microstructures. Deformation localised by forming micrometre-thick fractures. Deformation zones show dilatant micro-cracking, granular flow and bending grains, and pore collapse. Our model, with three different stages of damage accumulation, illustrates microstructural deformation in a compressed OPA sample.
Michael J. Schmidtke, Ruth Keppler, Jacek Kossak-Glowczewski, Nikolaus Froitzheim, and Michael Stipp
Solid Earth, 12, 1801–1828, https://doi.org/10.5194/se-12-1801-2021, https://doi.org/10.5194/se-12-1801-2021, 2021
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Properties of deformed rocks are frequently anisotropic. One of these properties is the travel time of a seismic wave. In this study we measured the seismic anisotropy of different rocks, collected in the Alps. Our results show distinct differences between rocks of oceanic origin and those of continental origin.
Sina Hale, Xavier Ries, David Jaeggi, and Philipp Blum
Solid Earth, 12, 1581–1600, https://doi.org/10.5194/se-12-1581-2021, https://doi.org/10.5194/se-12-1581-2021, 2021
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The construction of tunnels leads to substantial alterations of the surrounding rock, which can be critical concerning safety aspects. We use different mobile methods to assess the hydromechanical properties of an excavation damaged zone (EDZ) in a claystone. We show that long-term exposure and dehydration preserve a notable fracture permeability and significantly increase strength and stiffness. The methods are suitable for on-site monitoring without any further disturbance of the rock.
Jessica A. McBeck, Wenlu Zhu, and François Renard
Solid Earth, 12, 375–387, https://doi.org/10.5194/se-12-375-2021, https://doi.org/10.5194/se-12-375-2021, 2021
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The competing modes of fault network development, including nucleation, propagation, and coalescence, influence the localization and connectivity of fracture networks and are thus critical influences on permeability. We distinguish between these modes of fracture development using in situ X-ray tomography triaxial compression experiments on crystalline rocks. The results underscore the importance of confining stress (burial depth) and fluids on fault network development.
Hanaya Okuda, Ikuo Katayama, Hiroshi Sakuma, and Kenji Kawai
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Serpentinite, generated by the hydration of ultramafic rocks, is thought to be related to slow earthquakes at the subduction plate interface in the mantle wedge. We conducted friction experiments on brucite, one of the components of serpentinite, and found that wet brucite exhibits low and unstable friction under low effective normal stress conditions. This result suggests that wet brucite may be key for slow earthquakes at the subduction plate interface in a hydrated mantle wedge.
Chaojie Cheng, Sina Hale, Harald Milsch, and Philipp Blum
Solid Earth, 11, 2411–2423, https://doi.org/10.5194/se-11-2411-2020, https://doi.org/10.5194/se-11-2411-2020, 2020
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Fluids (like water or gases) within the Earth's crust often flow and interact with rock through fractures. The efficiency with which these fluids may flow through this void space is controlled by the width of the fracture(s). In this study, three different physical methods to measure fracture width were applied and compared and their predictive accuracy was evaluated. As a result, the mobile methods tested may well be applied in the field if a number of limitations and requirements are observed.
Martijn P. A. van den Ende, Marco M. Scuderi, Frédéric Cappa, and Jean-Paul Ampuero
Solid Earth, 11, 2245–2256, https://doi.org/10.5194/se-11-2245-2020, https://doi.org/10.5194/se-11-2245-2020, 2020
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The injection of fluids (like wastewater or CO2) into the subsurface could cause earthquakes when existing geological faults inside the reservoir are (re-)activated. To assess the hazard associated with this, previous studies have conducted experiments in which fluids have been injected into centimetre- and decimetre-scale faults. In this work, we analyse and model these experiments. To this end, we propose a new approach through which we extract the model parameters that govern slip on faults.
Berend A. Verberne, Martijn P. A. van den Ende, Jianye Chen, André R. Niemeijer, and Christopher J. Spiers
Solid Earth, 11, 2075–2095, https://doi.org/10.5194/se-11-2075-2020, https://doi.org/10.5194/se-11-2075-2020, 2020
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The strength of fault rock plays a central role in determining the distribution of crustal seismicity. We review laboratory work on the physics of fault friction at low shearing velocities carried out at Utrecht University in the past 2 decades. Key mechanical data and post-mortem microstructures can be explained using a generalized, physically based model for the shear of gouge-filled faults. When implemented into numerical fault-slip codes, this offers new ways to simulate the seismic cycle.
Hannes Krietsch, Valentin S. Gischig, Joseph Doetsch, Keith F. Evans, Linus Villiger, Mohammadreza Jalali, Benoît Valley, Simon Löw, and Florian Amann
Solid Earth, 11, 1699–1729, https://doi.org/10.5194/se-11-1699-2020, https://doi.org/10.5194/se-11-1699-2020, 2020
Patricio-Ignacio Pérez Donoso, Adrián-Enrique Ortiz Rojas, and Ernesto Meneses Rioseco
Solid Earth, 11, 1423–1440, https://doi.org/10.5194/se-11-1423-2020, https://doi.org/10.5194/se-11-1423-2020, 2020
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This work studies intensively the flow in fractures with finite hydraulic conductivity intersected by a well injecting/producing at constant pressure. We demonstrated that during the bilinear flow regime the transient propagation of isobars along the fracture is proportional to the fourth root of time. Moreover, we present relations to calculate the termination time of bilinear flow under constant injection/production well pressure. Our results can be utilized to estimate the fracture length.
Caiyuan Fan, Jinfeng Liu, Luuk B. Hunfeld, and Christopher J. Spiers
Solid Earth, 11, 1399–1422, https://doi.org/10.5194/se-11-1399-2020, https://doi.org/10.5194/se-11-1399-2020, 2020
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Coal is an important source rock for natural gas recovery, and its frictional properties play a role in induced seismicity. We performed experiments to investigate the frictional properties of bituminous coal, and our results show that the frictional strength of coal became significantly weakened with slip displacement, from a peak value of 0.5 to a steady-state value of 0.3. This may be caused by the development of shear bands with internal shear-enhanced molecular structure.
Maximilian O. Kottwitz, Anton A. Popov, Tobias S. Baumann, and Boris J. P. Kaus
Solid Earth, 11, 947–957, https://doi.org/10.5194/se-11-947-2020, https://doi.org/10.5194/se-11-947-2020, 2020
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In this study, we conducted 3-D numerical simulations of fluid flow in synthetically generated fractures that statistically reflect geometries of naturally occurring fractures. We introduced a non-dimensional characterization scheme to relate fracture permeabilities estimated from the numerical simulations to their geometries in a unique manner. By that, we refined the scaling law for fracture permeability, which can be easily integrated into discrete-fracture-network (DFN) modeling approaches.
Bjarne S. G. Almqvist, Hagen Bender, Amanda Bergman, and Uwe Ring
Solid Earth, 11, 807–828, https://doi.org/10.5194/se-11-807-2020, https://doi.org/10.5194/se-11-807-2020, 2020
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David Healy, Nicholas Erik Timms, and Mark Alan Pearce
Solid Earth, 11, 259–286, https://doi.org/10.5194/se-11-259-2020, https://doi.org/10.5194/se-11-259-2020, 2020
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Rock-forming minerals behave elastically, a property that controls their ability to support stress and strain, controls the transmission of seismic waves, and influences subsequent permanent deformation. Minerals are intrinsically anisotropic in their elastic properties; that is, they have directional variations that are related to the crystal lattice. We explore this directionality and present new ways of visualising it. We hope this will enable further advances in understanding deformation.
Patrick Selvadurai, Paul A. Selvadurai, and Morteza Nejati
Solid Earth, 10, 2001–2014, https://doi.org/10.5194/se-10-2001-2019, https://doi.org/10.5194/se-10-2001-2019, 2019
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The paper presents an alternative technique for estimating the Biot coefficient, which governs the partitioning of stresses between a porous skeleton and the saturating pore fluid of a fluid-saturated rock.
Mathieu Soret, Philippe Agard, Benoît Ildefonse, Benoît Dubacq, Cécile Prigent, and Claudio Rosenberg
Solid Earth, 10, 1733–1755, https://doi.org/10.5194/se-10-1733-2019, https://doi.org/10.5194/se-10-1733-2019, 2019
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This study sheds light on the mineral-scale mechanisms controlling the progressive deformation of sheared amphibolites from the Oman metamorphic sole during subduction initiation and unravels how strain is localized and accommodated in hydrated mafic rocks at high temperature conditions. Our results indicate how metamorphic reactions and pore-fluid pressures driven by changes in pressure–temperature conditions and/or water activity control the rheology of mafic rocks.
Jérôme Azzola, Benoît Valley, Jean Schmittbuhl, and Albert Genter
Solid Earth, 10, 1155–1180, https://doi.org/10.5194/se-10-1155-2019, https://doi.org/10.5194/se-10-1155-2019, 2019
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In projects based on enhanced geothermal system (EGS) technology, knowledge of the in situ stress state is of central importance to predict the response of the rock mass to different stimulation programs. We propose a characterization of the in situ stress state from the analysis of ultrasonic borehole imager (UBI) data acquired at different key moments of the reservoir. We discuss a significant stress rotation at depth and the absence of a significant change in the stress magnitude.
Camille Parlangeau, Alexandre Dimanov, Olivier Lacombe, Simon Hallais, and Jean-Marc Daniel
Solid Earth, 10, 307–316, https://doi.org/10.5194/se-10-307-2019, https://doi.org/10.5194/se-10-307-2019, 2019
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Calcite twinning is a common deformation mechanism that mainly occurs at low temperatures. Twinning activation appears at a critical strength value, which is poorly documented and still debated. Temperature is known to influence twin thickness and shape; however, few studies have been conducted on calcite deformation at low temperatures. The goal of this work is to determine if thickness is mainly due to high temperatures and to establish the validity of a threshold twinning activation value.
Djamil Al-Halbouni, Eoghan P. Holohan, Abbas Taheri, Martin P. J. Schöpfer, Sacha Emam, and Torsten Dahm
Solid Earth, 9, 1341–1373, https://doi.org/10.5194/se-9-1341-2018, https://doi.org/10.5194/se-9-1341-2018, 2018
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Sinkholes are round depression features in the ground that can cause high economic and life loss. On the Dead Sea shoreline, hundreds of sinkholes form each year driven by the fall of the water level and subsequent out-washing and dissolution of loose sediments. This study investigates the mechanical formation of sinkholes by numerical modelling. It highlights the role of material strength in the formation of dangerous collapse sinkholes and compares it to findings from a field site in Jordan.
Zeyu Zhang, Sabine Kruschwitz, Andreas Weller, and Matthias Halisch
Solid Earth, 9, 1225–1238, https://doi.org/10.5194/se-9-1225-2018, https://doi.org/10.5194/se-9-1225-2018, 2018
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We investigate the pore space of rock samples with respect to different petrophysical parameters using various methods, which provide data on pore size distributions. The resulting cumulative distributions of pore volume as a function of pore size are compared. Considering that the methods differ with regard to their limits of resolution, a multiple-length-scale characterization of the pore space geometry is proposed that is based on a combination of the results from all of these methods.
Paul W. J. Glover
Solid Earth, 8, 805–816, https://doi.org/10.5194/se-8-805-2017, https://doi.org/10.5194/se-8-805-2017, 2017
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Electrical flow through porous media depends on the amount of conductive material available and how that material is connected. This has conventionally been described by two laws invented by Archie in 1942 which allowed only one conducting material and one non-conducting material. This paper contends that both laws arise from a single underlying law which allows for any number of materials, where their fractions sum to unity and a parameter describing their connectedness also sums to unity.
Alejandra Quintanilla-Terminel, Mark E. Zimmerman, Brian Evans, and David L. Kohlstedt
Solid Earth, 8, 751–765, https://doi.org/10.5194/se-8-751-2017, https://doi.org/10.5194/se-8-751-2017, 2017
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Modeling natural deformation requires a good understanding of how the microscale and mesoscale properties of rocks affect bulk deformation. However, describing strain accommodation at a range of scales during rock deformation is an experimental challenge. We developed a novel technique that allows us to map strain down to the microscale. This technique was successfully applied to high-pressure, high-temperature deformation experiments and could be applied to a wide variety of geomaterials.
Guillaume Desbois, Nadine Höhne, Janos L. Urai, Pierre Bésuelle, and Gioacchino Viggiani
Solid Earth, 8, 291–305, https://doi.org/10.5194/se-8-291-2017, https://doi.org/10.5194/se-8-291-2017, 2017
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This work integrates measurements of the mechanical and transport properties with microstructures to understand deformation mechanisms in cemented mudrock. Cataclastic mechanisms are dominant down to nanometre scale. At low strain the fabric contains recognizable open fractures, while at high strain the reworked clay gouge shows resealing of initial fracture porosity. In the future, it will provide a microphysical basis for constitutive models to improve their extrapolation for long timescales.
Paul W. J. Glover
Solid Earth, 7, 1157–1169, https://doi.org/10.5194/se-7-1157-2016, https://doi.org/10.5194/se-7-1157-2016, 2016
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In 1942 Archie discovered equations which have been used ever since to calculate reserves of oil and gas around the world. Two equations exist, one which is theoretically justified, and one which is not. Unfortunately it is the one which is not justified that often gives the best results. This research examines the extent to which the two approaches give differing results, concluding that the Winsauer et al. form of Archie's equations is better for use with data containing systematic errors.
S. Kolzenburg, M. J. Heap, Y. Lavallée, J. K. Russell, P. G. Meredith, and D. B. Dingwell
Solid Earth, 3, 191–198, https://doi.org/10.5194/se-3-191-2012, https://doi.org/10.5194/se-3-191-2012, 2012
P. W. J. Glover, T. J. Ransford, and G. Auger
Solid Earth, 1, 85–91, https://doi.org/10.5194/se-1-85-2010, https://doi.org/10.5194/se-1-85-2010, 2010
Cited articles
Akin, S. and Kovscek, A. R.: Computed tomography in petroleum engineering research, Geological Society, London, Special Publications, 215, 23–38, https://doi.org/10.1144/gsl.sp.2003.215.01.03, 2003.
Al-Yaarubi, A. H., Pain, C. C., Grattoni, C. A., and Zimmerman, R. W.: Navier-Stokes simulations of fluid flow through a rock fracture, in: Proceedings of the 2nd International Symposium on Dynamics of Fluids and Transport in Fractured Rock, edited by: Faybishenko, B. and Witherspoon, P. A., American Geophysical Union, 201–205, 2005.
Bernabe, Y.: The effective pressure law for permeability in Chelmsford granite and Barre granite, Int. J. Rock Mech. Min., 23, 267–275, https://doi.org/10.1016/0148-9062(86)90972-1, 1986.
Bertels, S. P., DiCarlo, D. A., and Blunt, M. J.: Measurement of aperture distribution, capillary pressure, relative permeability, and in situ saturation in a rock fracture using computed tomography scanning, Water Resour. Res., 37, 649–662, https://doi.org/10.1029/2000wr900316, 2001.
Boussinesq, J.: Mémoire sur l'influence des Frottements dans les Mouvements Réguliers des Fluids, Journal de Mathématiques Pures et Appliquées, 2, 377–424, 1868.
Brush, D. J. and Thomson, N. R.: Fluid flow in synthetic rough-walled fractures: Navier-Stokes, Stokes, and local cubic law simulations, Water Resour. Res., 39, 1085, https://doi.org/10.1029/2002wr001346, 2003.
Clavaud, J.-B., Maineult, A., Zamora, M., Rasolofosaon, P., and Schlitter, C.: Permeability anisotropy and its relations with porous medium structure, J. Geophys. Res.-Sol. Ea., 113, B01202, https://doi.org/10.1029/2007jb005004, 2008.
Crandall, D., Bromhal, G., and Karpyn, Z. T.: Numerical simulations examining the relationship between wall-roughness and fluid flow in rock fractures, Int. J. Rock Mech. Min., 47, 784–796, https://doi.org/10.1016/j.ijrmms.2010.03.015, 2010.
Debbas, S. and Rumpf, H.: On the randomness of beds packed with spheres or irregular shaped particles, Chem. Eng. Sci., 21, 583–608, https://doi.org/10.1016/0009-2509(66)85072-8, 1966.
Dicman, A., Putra, E., and Schechter, D. S.: Modeling fluid flow through single fractures using experimental, stochastic and simulation approaches, SPE/DOE Symposium on Improved Oil Recovery, Tulsa, Oklahoma, 17–21 April, 2004.
Feng, X.-T., Chen, S., and Zhou, H.: Real-time computerized tomography (CT) experiments on sandstone damage evolution during triaxial compression with chemical corrosion, Int. J. Rock Mech. Min., 41, 181–192, https://doi.org/10.1016/S1365-1609(03)00059-5, 2004.
Fernø, M. A., Gauteplass, J., Hauge, L. P., Abell, G. E., Adamsen, T. C. H., and Graue, A.: Combined positron emission tomography and computed tomography to visualize and quantify fluid flow in sedimentary rocks, Water Resour. Res., 51, 7811–7819, https://doi.org/10.1002/2015wr017130, 2015.
Gale, J.: Assessing the permeability characteristics of fractured rock, Geological Society of America Special Papers, 189, 163–182, https://doi.org/10.1130/SPE189-p163, 1982.
Gangi, A. F.: Variation of whole and fractured porous rock permeability with confining pressure, Int. J. Rock Mech. Min., 15, 249–257, https://doi.org/10.1016/0148-9062(78)90957-9, 1978.
Ge, X., Ren, J., Pu, Y., Ma, W., and Zhu, Y.: Real-in time CT test of the rock meso-damage propagation law, Sci. China Ser. E-Technol. Sci., 44, 328–336, https://doi.org/10.1007/bf02916710, 2001.
Grader, A. S., Balzarini, M., Radaelli, F., Capasso, G., and Pellegrino, A.: Fracture-matrix flow: Quantification and visualization using X-Ray computerized tomography, in: Dynamics of Fluids in Fractured Rock (Geophysical Monograph Series 162), edited by: Faybishenko, B., Witherspoon, P. A., and Gale, J. E., American Geophysical Union, Washington, D.C., 157–168, 2013.
Heriawan, M. N. and Koike, K.: Coal quality related to microfractures identified by CT image analysis, Int. J. Coal Geol., 140, 97–110, https://doi.org/10.1016/j.coal.2015.02.001, 2015.
Huber, F., Enzmann, F., Wenka, A., Bouby, M., Dentz, M., and Schäfer, T.: Natural micro-scale heterogeneity induced solute and nanoparticle retardation in fractured crystalline rock, J. Contamin. Hydrol., 133, 40–52, https://doi.org/10.1016/j.jconhyd.2012.03.004, 2012.
Huo, D. and Benson, S. M.: An experimental investigation of stress-dependent permeability and permeability hysteresis behavior in rock fractures, in: Dynamics of Fluids and Transport in Complex Fractured-Porous Systems (Geophysical Monograph Series 210), edited by: Faybishenko, B., Benson, S. M., and Gale, J. E., John Wiley & Sons, Inc, Hoboken, NJ, 99–114, 2015.
Huo, D., Pini, R., and Benson, S.: A calibration-free approach for measuring fracture aperture distributions using X-ray computed tomography, Geosphere, 12, 558–571, https://doi.org/10.1130/GES01175.1, 2016.
Ikeda, S., Nakano, T., and Nakashima, Y.: Three-dimensional study on the interconnection and shape of crystals in a graphic granite by X-ray CT and image analysis, Mineralogical Magazine, 64, 945–959, https://doi.org/10.1180/002646100549760, 2000.
Iliev, O. and Laptev, V.: On numerical simulation of flow through oil filters, Comput. Visual Sci., 6, 139–146, https://doi.org/10.1007/s00791-003-0118-8, 2004.
Indraratna, B., Kumara, C., Zhu, S.-P., and Sloan, S.: Mathematical modeling and experimental verification of fluid flow through deformable rough rock joints, Int. J. Geomech., 15, 04014065, https://doi.org/10.1061/(ASCE)GM.1943-5622.0000413, 2015.
Ito, H., Kato, K., Ochi, Y., Hosokawa, N., Watanabe, N., Mino, Y., and Tsuchiya, Y.: Fracture flow models of core samples by X-ray CT under pressure and numerical simulation, Proceedings of the 11th SEGJ International Symposium, Yokohama, Japan, 18–21 November 2013, 2013.
Janna, W. S.: Introduction to fluid mechanics, Boca Raton [etc.]: CRC Press, Taylor & Francis Group, 2010.
Johns, R. A., Steude, J. S., Castanier, L. M., and Roberts, P. V.: Nondestructive measurements of fracture aperture in crystalline rock cores using X ray computed tomography, J. Geophys. Res.-Sol. Ea., 98, 1889–1900, https://doi.org/10.1029/92jb02298, 1993.
Karpyn, Z. T., Alajmi, A., Radaelli, F., Halleck, P. M., and Grader, A. S.: X-ray CT and hydraulic evidence for a relationship between fracture conductivity and adjacent matrix porosity, Eng. Geol., 103, 139–145, https://doi.org/10.1016/j.enggeo.2008.06.017, 2009.
Keller, A. A.: High resolution cat imaging of fractures in consolidated materials, Int. J. Rock Mech. Min., 34, 155.e151–155.e116, https://doi.org/10.1016/S1365-1609(97)00181-0, 1997.
Keller, A. A., Roberts, P. V., and Blunt, M. J.: Effect of fracture aperture variations on the dispersion of contaminants, Water Resour. Res., 35, 55–63, https://doi.org/10.1029/1998wr900041, 1999.
Ketcham, R. A.: Three-dimensional grain fabric measurements using high-resolution X-ray computed tomography, J. Struct. Geol., 27, 1217–1228, https://doi.org/10.1016/j.jsg.2005.02.006, 2005.
Ketcham, R. A.: Accurate three-dimensional measurements of features in geological materials from X-ray computed tomography data, in: Advances in X-ray Tomography for Geomaterials, edited by: Desrues, J., Viggiani, G., and Besuelle, P., ISTE Ltd., London, UK, 143–148, 2010.
Ketcham, R. A. and Carlson, W. D.: Acquisition, optimization and interpretation of X-ray computed tomographic imagery: applications to the geosciences, Comput. Geosci., 27, 381–400, https://doi.org/10.1016/S0098-3004(00)00116-3, 2001.
Ketcham, R. A., Slottke, D. T., and Sharp Jr, J. M.: Three-dimensional measurement of fractures in heterogeneous materials using high-resolution X-ray computed tomography, Geosphere, 6, 498–514, https://doi.org/10.1130/ges00552.1, 2010.
Khan, F., Enzmann, F., Kersten, M., Wiegmann, A., and Steiner, K.: 3-D simulation of the permeability tensor in a soil aggregate on basis of nanotomographic imaging and LBE solver, J. Soils Sediments, 12, 86–96, https://doi.org/10.1007/s11368-011-0435-3, 2012.
Kim, I., Lindquist, W., and Durham, W.: Fracture flow simulation using a finite-difference lattice Boltzmann method, Phys. Rev. E, 67, 046708, https://doi.org/10.1103/PhysRevE.67.046708, 2003.
Konzuk, J. and Kueper, B. H.: A study on the use of cubic-law based models for simulating flow through discrete rough-walled fractures, Proceedings of Fractured Rock Aquifers Conference, Denver, CO, March 13–15 2002, 2002.
Konzuk, J. S. and Kueper, B. H.: Evaluation of cubic law based models describing single-phase flow through a rough-walled fracture, Water Resour. Res., 40, W02402, https://doi.org/10.1029/2003wr002356, 2004.
Koyama, T., Neretnieks, I., and Jing, L.: A numerical study on differences in using Navier–Stokes and Reynolds equations for modeling the fluid flow and particle transport in single rock fractures with shear, Int. J. Rock Mech. Min., 45, 1082–1101, https://doi.org/10.1016/j.ijrmms.2007.11.006, 2008.
Kranz, R. L., Frankel, A. D., Engelder, T., and Scholz, C. H.: The permeability of whole and jointed Barre Granite, Int. J. Rock Mech. Min., 16, 225–234, https://doi.org/10.1016/0148-9062(79)91197-5, 1979.
Krevor, S. C. M., Pini, R., Zuo, L., and Benson, S. M.: Relative permeability and trapping of CO2 and water in sandstone rocks at reservoir conditions, Water Resour. Res., 48, W02532, https://doi.org/10.1029/2011wr010859, 2012.
Kulenkampff, J., Gründig, M., Richter, M., and Enzmann, F.: Evaluation of positron-emission-tomography for visualisation of migration processes in geomaterials, Physics and Chemistry of the Earth, Parts A/B/C, 33, 937–942, https://doi.org/10.1016/j.pce.2008.05.005, 2008.
Landry, C. J. and Karpyn, Z. T.: Single-phase lattice Boltzmann simulations of pore-scale flow in fractured permeable media, Int. J. Oil Gas Coal Technol., 5, 182–206, https://doi.org/10.1504/IJOGCT.2012.046320, 2012.
Lenoir, N., Bornert, M., Desrues, J., Bésuelle, P., and Viggiani, G.: Volumetric digital image correlation applied to X-ray microtomography images from triaxial compression tests on argillaceous rock, Strain, 43, 193–205, https://doi.org/10.1111/j.1475-1305.2007.00348.x, 2007.
Leu, L., Berg, S., Enzmann, F., Armstrong, R. T., and Kersten, M.: Fast X-ray micro-tomography of multiphase flow in Berea Sandstone: A sensitivity study on image processing, Transp. Porous. Med., 105, 451–469, https://doi.org/10.1007/s11242-014-0378-4, 2014.
Liu, W., Li, Y., and Wang, B.: Gas permeability of fractured sandstone/coal samples under variable confining pressure, Transp. Porous. Med., 83, 333–347, https://doi.org/10.1007/s11242-009-9444-8, 2010.
Madadi, M. and Sahimi, M.: Lattice Boltzmann simulation of fluid flow in fracture networks with rough, self-affine surfaces, Phys. Rev. E., 67, 026309, https://doi.org/10.1103/PhysRevE.67.026309, 2003.
Mazumder, S., Wolf, K. H. A. A., Elewaut, K., and Ephraim, R.: Application of X-ray computed tomography for analyzing cleat spacing and cleat aperture in coal samples, Int. J. Coal Geol., 68, 205–222, https://doi.org/10.1016/j.coal.2006.02.005, 2006.
Nakashima, Y. and Nakano, T.: Optimizing contrast agents with respect to reducing beam hardening in nonmedical X-ray computed tomography experiments, J. Xray Sci. Technol., 22, 91–103, https://doi.org/10.3233/xst-130411, 2014.
Nemoto, K., Watanabe, N., Hirano, N., and Tsuchiya, N.: Direct measurement of contact area and stress dependence of anisotropic flow through rock fracture with heterogeneous aperture distribution, Earth Planet. Sci. Lett., 281, 81–87, https://doi.org/10.1016/j.epsl.2009.02.005, 2009.
Oh, J., Kim, K.-Y., Han, W. S., Kim, T., Kim, J.-C., and Park, E.: Experimental and numerical study on supercritical CO2/brine transport in a fractured rock: Implications of mass transfer, capillary pressure and storage capacity, Adv. Water Resour., 62, Part C, 442–453, https://doi.org/10.1016/j.advwatres.2013.03.007, 2013.
Oron, A. P. and Berkowitz, B.: Flow in rock fractures – The local cubic law assumption reexamined, Water Resour. Res., 34, 2811–2825, https://doi.org/10.1029/98wr02285, 1998.
Patankar, S. V. and Spalding, D. B.: A calculation procedure for heat, mass and momentum transfer in three-dimensional parabolic flows, Int. J. Heat Mass Transfer, 15, 1787–1806, https://doi.org/10.1016/0017-9310(72)90054-3, 1972.
Perrin, J.-C. and Benson, S.: An experimental study on the influence of sub-core scale heterogeneities on CO2 distribution in reservoir rocks, Transp. Porous. Med., 82, 93–109, https://doi.org/10.1007/s11242-009-9426-x, 2010.
Pfrang, A., Schladitz, K., Wiegmann, A., and Schimmel, T.: Calculation of the evolution of surface area and free volume during the infiltration of fiber felts, Chemical Vapor Deposition, 13, 705–715, https://doi.org/10.1002/cvde.200706590, 2007.
Pini, R. and Benson, S. M.: Simultaneous determination of capillary pressure and relative permeability curves from core-flooding experiments with various fluid pairs, Water Resour. Res., 49, 3516–3530, https://doi.org/10.1002/wrcr.20274, 2013.
Pini, R., Krevor, S. C. M., and Benson, S. M.: Capillary pressure and heterogeneity for the CO2/water system in sandstone rocks at reservoir conditions, Adv. Water Resour., 38, 48–59, https://doi.org/10.1016/j.advwatres.2011.12.007, 2012.
Pippan, R. and Gumbsch, P.: Multiscale modelling of plasticity and fracture by means of dislocation mechanics, Springer Science & Business Media, New York, 2010.
Pritchard, G.: Anti-corrosion polymers: PEEK, PEKK and other polyaryls, 8, Rapra Technology Ltd., Shawbury/Shrewsbury/Shropshire, UK, 1994.
Pudlo, D., Henkel, S., Enzmann, F., Heister, K., Werner, L., Ganzer, L., Reitenbach, V., Albrecht, D., and Gaupp, R.: The relevance of mineral mobilization and dissolution on the reservoir quality of sandstones in CO2 storage sites, Energy Procedia, 59, 390–396, https://doi.org/10.1016/j.egypro.2014.10.393, 2014.
Pyrak-Nolte, L. J. and Morris, J. P.: Single fractures under normal stress: The relation between fracture specific stiffness and fluid flow, Int. J. Rock Mech. Min., 37, 245–262, https://doi.org/10.1016/S1365-1609(99)00104-5, 2000.
Rangel-German, E., Akin, S., and Castanier, L.: Multiphase-flow properties of fractured porous media, J. Petroleum Sci. Eng., 51, 197–213, https://doi.org/10.1016/j.petrol.2005.12.010, 2006.
Re, F. and Scavia, C.: Determination of contact areas in rock joints by X-ray computer tomography, Int. J. Rock Mech. Min., 36, 883–890, https://doi.org/10.1016/S0148-9062(99)00056-X, 1999.
Ren, J. and Ge, X.: Computerized tomography examination of damage tests on rocks under triaxial compression, Rock Mech. Rock Eng., 37, 83–93, https://doi.org/10.1007/s00603-003-0007-y, 2004.
Rücker, M., Berg, S., Armstrong, R. T., Georgiadis, A., Ott, H., Schwing, A., Neiteler, R., Brussee, N., Makurat, A., Leu, L., Wolf, M., Khan, F., Enzmann, F., and Kersten, M.: From connected pathway flow to ganglion dynamics, Geophys. Res. Lett., 42, 3888–3894, https://doi.org/10.1002/2015gl064007, 2015.
Rutqvist, J. and Stephansson, O.: The role of hydromechanical coupling in fractured rock engineering, Hydrogeol. J., 11, 7–40, https://doi.org/10.1007/s10040-002-0241-5, 2003.
Sahimi, M.: Flow and transport in porous media and fractured rock: from classical methods to modern approaches, John Wiley & Sons, Weinheim, Germany, 2011.
Santos, J., Vargas, E., Barroso, E., Castro, J., Gonçalves, C., and Campos, E.: Studies of mechanisms associated with sand production using X-ray CT scan, in: Advances in X-ray Tomography for Geomaterials, edited by: Desrues, J., Viggiani, G., and Besuelle, P., ISTE Ltd., London, UK, 199–205, 2010.
Schembre, J. M. and Kovscek, A. R.: A technique for measuring two-phase relative permeability in porous media via X-ray CT measurements, J. Petrol. Sci. Eng., 39, 159–174, https://doi.org/10.1016/S0920-4105(03)00046-9, 2003.
Schwarz, J.-O. and Enzmann, F.: Simulation of Fluid Flow on Fractures and Implications for Reactive Transport Simulations, Transp. Porous. Med., 96, 501–525, https://doi.org/10.1007/s11242-012-0103-0, 2013.
Searle, O. B. and Pfeiffer, R. H.: Victrex poly(ethersulfone) (PES) and Victrex poly(etheretherketone) (PEEK), Polymer Eng. Sci., 25, 474–476, https://doi.org/10.1002/pen.760250808, 1985.
Shi, J.-Q., Xue, Z., and Durucan, S.: History matching of CO2 core flooding CT scan saturation profiles with porosity dependent capillary pressure, Energy Procedia, 1, 3205–3211, https://doi.org/10.1016/j.egypro.2009.02.104, 2009.
Snow, D. T.: A parallel plate model of fractured permeable media, Thesis (PhD), University of California, Berkeley, 359 pp., 1965.
Swan, G.: Determination of stiffness and other joint properties from roughness measurements, Rock Mech. Rock Eng., 16, 19–38, https://doi.org/10.1007/bf01030216, 1983.
Tatone, B. A. and Grasselli, G.: Characterization of the effect of normal load on the discontinuity morphology in direct shear specimens using X-ray micro-CT, Acta Geotech., 10, 31–54, https://doi.org/10.1007/s11440-014-0320-5, 2015.
Tsang, Y. W.: The effect of tortuosity on fluid flow through a single fracture, Water Resour. Res., 20, 1209–1215, https://doi.org/10.1029/WR020i009p01209, 1984.
Tsuchiyama, A., Uesugi, K., Nakano, T., and Ikeda, S.: Quantitative evaluation of attenuation contrast of X-ray computed tomography images using monochromatized beams, Am. Mineral., 90, 132–142, https://doi.org/10.2138/am.2005.1552, 2005.
Van Geet, M. and Swennen, R.: Quantitative 3-D-fracture analysis by means of microfocus X-ray computer tomography (µCT) - An example from coal, Geophys. Res. Lett., 28, 3333–3336, https://doi.org/10.1029/2001gl013247, 2001.
Vandersteen, K., Busselen, B., Van Den Abeele, K., and Carmeliet, J.: Quantitative characterization of fracture apertures using microfocus computed tomography, Geological Society, London, Special Publications, 215, 61–68, https://doi.org/10.1144/gsl.sp.2003.215.01.06, 2003.
Vinegar, H. J., De Waal, J. A., and Wellington, S. L.: CT studies of brittle failure in castlegate sandstone, Int. J. Rock Mech. Min., 28, 441–450, https://doi.org/10.1016/0148-9062(91)90082-W, 1991.
Walsh, J. B.: Effect of pore pressure and confining pressure on fracture permeability, Int. J. Rock Mech. Min., 18, 429–435, https://doi.org/10.1016/0148-9062(81)90006-1, 1981.
Wang, H. F.: Theory of linear poroelasticity with applications to geomechanics and hydrogeology, Princeton University Press, Princeton, NJ, 2000.
Watanabe, N., Hirano, N., and Tsuchiya, N.: Determination of aperture structure and fluid flow in a rock fracture by high-resolution numerical modeling on the basis of a flow-through experiment under confining pressure, Water Resour. Res., 44, W06412, https://doi.org/10.1029/2006wr005411, 2008.
Watanabe, N., Hirano, N., and Tsuchiya, N.: Diversity of channeling flow in heterogeneous aperture distribution inferred from integrated experimental-numerical analysis on flow through shear fracture in granite, J. Geophys. Res.-Sol. Ea., 114, B04208, https://doi.org/10.1029/2008jb005959, 2009.
Watanabe, N., Ishibashi, T., Ohsaki, Y., Tsuchiya, Y., Tamagawa, T., Hirano, N., Okabe, H., and Tsuchiya, N.: X-ray CT based numerical analysis of fracture flow for core samples under various confining pressures, Eng. Geol., 123, 338–346, https://doi.org/10.1016/j.enggeo.2011.09.010, 2011.
Watanabe, N., Ishibashi, T., Tsuchiya, N., Ohsaki, Y., Tamagawa, T., Tsuchiya, Y., Okabe, H., and Ito, H.: Geologic core holder with a CFR PEEK body for the X-ray CT-based numerical analysis of fracture flow under confining pressure, Rock Mech. Rock Eng., 46, 413–418, https://doi.org/10.1007/s00603-012-0311-5, 2013.
Weerakone, W. M. S. B. and Wong, R. C. K.: Characterization of Variable Aperture Rock Fractures Using X-ray Computer Tomography, in: Advances in X-ray Tomography for Geomaterials, edited by: Desrues, J., Viggiani, G., and Besuelle, P., ISTE LTd., London, UK, 229–235, 2010.
Weissbrod, T. and Sneh, A.: Sedimentology and paleogeography of the Late Precambrian-Early Cambrian arkosic and conglomeratic facies in the northern margins of the Arabo-Nubian Shield, Bulletin (Makhon ha-ge'ologi (Israel)), no. 87., Geological Survey of Israel, Jerusalem, 2002.
Witherspoon, P. A., Wang, J. S. Y., Iwai, K., and Gale, J. E.: Validity of cubic law for fluid flow in a deformable rock fracture, Water Resour. Res., 16, 1016–1024, https://doi.org/10.1029/WR016i006p01016, 1980.
Zhou, X. P., Zhang, Y. X., and Ha, Q. L.: Real-time computerized tomography (CT) experiments on limestone damage evolution during unloading, Theor. Appl. Fracture Mech., 50, 49–56, https://doi.org/10.1016/j.tafmec.2008.04.005, 2008.
Zimmerman, R. W. and Yeo, I.-W.: Fluid flow in rock fractures: From the Navier-Stokes equations to the cubic law, in: Dynamics of Fluids in Fractured Rock (Geophysical Monograph Series 162), edited by: Faybishenko, B., Witherspoon, P. A., and Gale, J. E., American Geophysical Union, Washington, D.C., 213–224, 2013.
Zimmerman, R. W., Chen, D.-W., and Cook, N. G. W.: The effect of contact area on the permeability of fractures, J. Hydrol., 139, 79–96, https://doi.org/10.1016/0022-1694(92)90196-3, 1992.
Short summary
A method is introduced to implement medical CT data of a fractured sandstone under varying confining pressures into fluid flow simulations to reproduce experimental permeabilities. The simulation results reproduce plausible fracture flow features (e.g. flow channeling, fracture closing/opening) and approximate the actual permeabilities, which are affected by the CT resolution and compositional matrix heterogeneities. Additionally, some recommendations are presented concerning future studies.
A method is introduced to implement medical CT data of a fractured sandstone under varying...
