Ryan Armstrong

Associate Professor

Ryan Armstrong’s research interests are on multiphase flow through porous media with applications to enhanced oil recovery and special core analysis. He specializes on the usage of micro-fluidic devices and dynamic X-ray microtomography experiments to study the pore-scale physics relevant to subsurface engineering technologies. He has worked on projects ranging from microbial enhanced oil recovery (MEOR) to alkaline surfactant polymer flooding (ASP) to digital core analysis. Previously, he was a member of the Rock and Fluid Science Team at Shell Global Solutions International B.V., where he worked with Schlumberger Moscow Research on a collaborative research project that assessed pore-scale modeling tools for digital core analysis.

 

Biography

•Shell Global Solutions International B.V., Rijswijk, The Netherlands. Rock and Fluid Science (2012 - 2014)

•Ph.D., Oregon State University, Environmental Engineering, Summa Cum Laude (2012)

•Lawrence Berkeley National Laboratory, Earth Science Division. Research Assistant (2009)

•CH2MHILL, Water Treatment Laboratory, Corvallis, Oregon USA. Environmental Scientist (2006 - 2007)

•B.S., Oregon State University, Bioengineering (2006)

 

Professional Awards

2013: Young Professional Best Paper, Society of Core Analyst Symposium

Koroteev, D., Dinariev, O., Evseev, N., Klemin, D., Nadeev, A., Safonov, S., Gurpinar, O., Berg, S., van Kruisdijk, C., Armstrong, T. R., Meyers, M., Hathon, L., and H. de Jong, (2013), Direct hydrodynamic simulation of multiphase flow in porous rock, International Symposium of the Society of Core Analysts, Napa Valley, California, 16-19 September.

2012: Best Poster Award, Society of Core Analyst Symposium

Armstrong, T. R., Pentland, C. H., Berg, S., Hummel, J., Lichau, D., and L. Bernard, (2012),Estimation of curvature from micro-CT liquid-liquid displacement studies with pore scale resolution, International Symposium of the Society of Core Analyst, Aberdeen, Scotland, UK, 27-30 August 2012. 

2008: Oregon Laurels Scholarship

 

Professional Affiliations

2012 - Present:  International Society of Porous Media

2012 - Present:  Society of Core Analysts

2009 - Present:  Society of Petroleum Engineers

2008 - Present:  American Geophysical Union

publications

Journal articles
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McClure JE; Berg S; Armstrong RT, 2021, 'Capillary fluctuations and energy dynamics for flow in porous media', Physics of Fluids, vol. 33, http://dx.doi.org/10.1063/5.0057428
2021
Singh A; Rabbani A; Regenauer-Lieb K; Armstrong RT; Mostaghimi P, 2021, 'Computer vision and unsupervised machine learning for pore-scale structural analysis of fractured porous media', Advances in Water Resources, vol. 147, http://dx.doi.org/10.1016/j.advwatres.2020.103801
2021
Wang YD; Blunt MJ; Armstrong RT; Mostaghimi P, 2021, 'Deep learning in pore scale imaging and modeling', Earth-Science Reviews, vol. 215, http://dx.doi.org/10.1016/j.earscirev.2021.103555
2021
Wang YD; Shabaninejad M; Armstrong RT; Mostaghimi P, 2021, 'Deep neural networks for improving physical accuracy of 2D and 3D multi-mineral segmentation of rock micro-CT images', Applied Soft Computing, vol. 104, pp. 107185 - 107185, http://dx.doi.org/10.1016/j.asoc.2021.107185
2021
Muin SR; Rabbani A; Bournival G; Ata S; Armstrong RT, 2021, 'Utilization of microcomputed tomography and pore network modeling to characterize foam dynamics', Chemical Engineering Science, vol. 230, http://dx.doi.org/10.1016/j.ces.2020.116174
2021
Lanetc Z; Zhuravljov A; Jing Y; Armstrong RT; Mostaghimi P, 2021, 'Coupling of transient matrix diffusion and pore network models for gas flow in coal', Journal of Natural Gas Science and Engineering, vol. 88, pp. 103741 - 103741, http://dx.doi.org/10.1016/j.jngse.2020.103741
2021
Wang YD; Chung T; Rabbani A; Armstrong RT; Mostaghimi P, 2021, 'Fast direct flow simulation in porous media by coupling with pore network and Laplace models', Advances in Water Resources, vol. 150, http://dx.doi.org/10.1016/j.advwatres.2021.103883
2021
Wang YD; Chung T; Armstrong RT; Mostaghimi P, 2021, 'ML-LBM: Predicting and Accelerating Steady State Flow Simulation in Porous Media with Convolutional Neural Networks', Transport in Porous Media, vol. 138, pp. 49 - 75, http://dx.doi.org/10.1007/s11242-021-01590-6
2021
Alzubaidi F; Mostaghimi P; Swietojanski P; Clark SR; Armstrong RT, 2021, 'Automated lithology classification from drill core images using convolutional neural networks', Journal of Petroleum Science and Engineering, vol. 197, http://dx.doi.org/10.1016/j.petrol.2020.107933
2021
Armstrong RT; Lanetc Z; Mostaghimi P; Zhuravljov A; Herring A; Robins V, 2021, 'Correspondence of max-flow to the absolute permeability of porous systems', Physical Review Fluids, vol. 6, http://dx.doi.org/10.1103/PhysRevFluids.6.054003
2021
Armstrong RT; Sun C; Mostaghimi P; Berg S; Rücker M; Luckham P; Georgiadis A; McClure JE, 2021, 'Multiscale Characterization of Wettability in Porous Media', Transport in Porous Media, http://dx.doi.org/10.1007/s11242-021-01615-0
2021
Niu Y; Da Wang Y; Mostaghimi P; McClure JE; Yin J; Armstrong RT, 2021, 'Geometrical-Based Generative Adversarial Network to Enhance Digital Rock Image Quality', Physical Review Applied, vol. 15, http://dx.doi.org/10.1103/PhysRevApplied.15.064033
2021
Chung T; Wang YD; Armstrong RT; Mostaghimi P, 2021, 'Minimising the impact of sub-resolution features on fluid flow simulation in porous media', Journal of Petroleum Science and Engineering, vol. 207, pp. 109055 - 109055, http://dx.doi.org/10.1016/j.petrol.2021.109055
2021
Rucker M; Georgiadis A; Armstrong RT; Ott H; Brussee N; van der Linde H; Simon L; Enzmann F; Kersten M; Berg S, 2021, 'The Origin of Non-thermal Fluctuations in Multiphase Flow in Porous Media', FRONTIERS IN WATER, vol. 3, http://dx.doi.org/10.3389/frwa.2021.671399
2021
Jing Y; Yuan M; Lu X; Armstrong RT; Wang J; Mostaghimi P, 2021, 'Coupling of pipe network modelling and domain decomposition for flow in mineralised coal cores', International Journal of Coal Geology, vol. 245, pp. 103819 - 103819, http://dx.doi.org/10.1016/j.coal.2021.103819
2021
Alqahtani NJ; Chung T; da Wang Y; Armstrong RT; Swietojanski P; Mostaghimi P, 2021, 'Flow-based characterization of digital rock images using deep learning', SPE Journal, vol. 26, pp. 1800 - 1811, http://dx.doi.org/10.2118/205376-PA
2021
Chung T; Wang YD; Armstrong RT; Mostaghimi P, 2020, 'Voxel agglomeration for accelerated estimation of permeability from micro-CT images', Journal of Petroleum Science and Engineering, vol. 184, http://dx.doi.org/10.1016/j.petrol.2019.106577
2020
Lu X; Armstrong RT; Mostaghimi P, 2020, 'Analysis of gas diffusivity in coal using micro-computed tomography', Fuel, vol. 261, http://dx.doi.org/10.1016/j.fuel.2019.116384
2020
Wang YD; Chung T; Armstrong RT; McClure J; Ramstad T; Mostaghimi P, 2020, 'Accelerated Computation of Relative Permeability by Coupled Morphological and Direct Multiphase Flow Simulation', Journal of Computational Physics, vol. 401, http://dx.doi.org/10.1016/j.jcp.2019.108966
2020
Sun C; McClure JE; Mostaghimi P; Herring AL; Meisenheimer DE; Wildenschild D; Berg S; Armstrong RT, 2020, 'Characterization of wetting using topological principles', Journal of Colloid and Interface Science, vol. 578, pp. 106 - 115, http://dx.doi.org/10.1016/j.jcis.2020.05.076
2020
Sun C; McClure JE; Mostaghimi P; Herring AL; Berg S; Armstrong RT, 2020, 'Probing Effective Wetting in Subsurface Systems', Geophysical Research Letters, vol. 47, http://dx.doi.org/10.1029/2019GL086151
2020
Zou S; Liu Y; Cai J; Armstrong RT, 2020, 'Influence of Capillarity on Relative Permeability in Fractional Flows', Water Resources Research, vol. 56, http://dx.doi.org/10.1029/2020WR027624
2020
McClure JE; Ramstad T; Li Z; Armstrong RT; Berg S, 2020, 'Modeling Geometric State for Fluids in Porous Media: Evolution of the Euler Characteristic', Transport in Porous Media, vol. 133, pp. 229 - 250, http://dx.doi.org/10.1007/s11242-020-01420-1
2020
Jing Y; Rabbani A; Armstrong RT; Wang J; Mostaghimi P, 2020, 'A hybrid fracture-micropore network model for multiphysics gas flow in coal', Fuel, vol. 281, http://dx.doi.org/10.1016/j.fuel.2020.118687
2020
Niu Y; Wang YD; Mostaghimi P; Swietojanski P; Armstrong RT, 2020, 'An Innovative Application of Generative Adversarial Networks for Physically Accurate Rock Images With an Unprecedented Field of View', Geophysical Research Letters, vol. 47, http://dx.doi.org/10.1029/2020GL089029
2020
Jing Y; Armstrong RT; Mostaghimi P, 2020, 'Image-based fracture pipe network modelling for prediction of coal permeability', Fuel, vol. 270, pp. 117447 - 117447, http://dx.doi.org/10.1016/j.fuel.2020.117447
2020
Niu Y; Mostaghimi P; Shabaninejad M; Swietojanski P; Armstrong RT, 2020, 'Digital Rock Segmentation for Petrophysical Analysis With Reduced User Bias Using Convolutional Neural Networks', Water Resources Research, vol. 56, http://dx.doi.org/10.1029/2019WR026597
2020
Wang YD; Armstrong RT; Mostaghimi P, 2020, 'Boosting Resolution and Recovering Texture of 2D and 3D Micro-CT Images with Deep Learning', Water Resources Research, vol. 56, http://dx.doi.org/10.1029/2019WR026052
2020
Alzahid YA; Aborshaid H; Asali M; McClure J; Chen C; Mostaghimi P; Da Wang Y; Sun C; Armstrong RT, 2020, 'Real-time synchrotron-based X-ray computed microtomography during in situ emulsification', Journal of Petroleum Science and Engineering, vol. 195, http://dx.doi.org/10.1016/j.petrol.2020.107885
2020
Fan M; McClure JE; Armstrong RT; Shabaninejad M; Dalton LE; Crandall D; Chen C, 2020, 'Influence of Clay Wettability Alteration on Relative Permeability', Geophysical Research Letters, vol. 47, http://dx.doi.org/10.1029/2020GL088545
2020
Hu Y; Armstrong RT; Shikhov I; Hung TT; Lee B; Mostaghimi P, 2020, 'Unsteady-State Coreflooding Monitored by Positron Emission Tomography and X-ray Computed Tomography', SPE Journal, vol. 25, pp. 242 - 252, http://dx.doi.org/10.2118/195701-PA
2020
Alqahtani N; Alzubaidi F; Armstrong RT; Swietojanski P; Mostaghimi P, 2020, 'Machine learning for predicting properties of porous media from 2d X-ray images', Journal of Petroleum Science and Engineering, vol. 184, http://dx.doi.org/10.1016/j.petrol.2019.106514
2020
Chung T; Da Wang Y; Armstrong RT; Mostaghimi P, 2020, 'CNN-PFVS: Integrating Neural Network and Finite Volume Models to Accelerate Flow Simulation on Pore Space Images', Transport in Porous Media, vol. 135, pp. 25 - 37, http://dx.doi.org/10.1007/s11242-020-01466-1
2020
Singh A; Regenauer-Lieb K; Walsh SDC; Armstrong RT; van Griethuysen JJM; Mostaghimi P, 2020, 'On Representative Elementary Volumes of Grayscale Micro-CT Images of Porous Media', Geophysical Research Letters, vol. 47, http://dx.doi.org/10.1029/2020GL088594
2020
Sun C; McClure JE; Mostaghimi P; Herring AL; Shabaninejad M; Berg S; Armstrong RT, 2020, 'Linking continuum-scale state of wetting to pore-scale contact angles in porous media', Journal of Colloid and Interface Science, vol. 561, pp. 173 - 180, http://dx.doi.org/10.1016/j.jcis.2019.11.105
2020
Chung T; Wang YD; Armstrong RT; Mostaghimi P, 2019, 'Approximating permeability of microcomputed-tomography images using elliptic flow equations', SPE Journal, vol. 24, pp. 1154 - 1163, http://dx.doi.org/10.2118/191379-PA
2019
Wang YD; Armstrong RT; Mostaghimi P, 2019, 'Enhancing Resolution of Digital Rock Images with Super Resolution Convolutional Neural Networks', Journal of Petroleum Science and Engineering, vol. 182, http://dx.doi.org/10.1016/j.petrol.2019.106261
2019
Wang YD; Chung T; Armstrong RT; McClure JE; Mostaghimi P, 2019, 'Computations of permeability of large rock images by dual grid domain decomposition', Advances in Water Resources, vol. 126, pp. 1 - 14, http://dx.doi.org/10.1016/j.advwatres.2019.02.002
2019
Zou S; Armstrong RT, 2019, 'Multiphase flow under heterogeneous wettability conditions studied by special core analysis and pore-scale imaging', SPE Journal, vol. 24, pp. 1234 - 1247, http://dx.doi.org/10.2118/195577-PA
2019
Rabbani A; Mostaghimi P; Armstrong RT, 2019, 'Pore network extraction using geometrical domain decomposition', Advances in Water Resources, vol. 123, pp. 70 - 83, http://dx.doi.org/10.1016/j.advwatres.2018.11.003
2019
Jing Y; Armstrong RT; Ramandi HL; Mostaghimi P, 2019, 'DigiCoal: A computational package for characterisation of coal cores', Journal of Petroleum Science and Engineering, vol. 176, pp. 775 - 791, http://dx.doi.org/10.1016/j.petrol.2019.01.094
2019
Zhang Y; Mostaghimi P; Armstrong RT, 2019, 'Multiscale characterization of shale diffusivity using time-lapsed X-ray computed tomography and pore-level simulations', Journal of Petroleum Science and Engineering, vol. 182, http://dx.doi.org/10.1016/j.petrol.2019.106271
2019
Shaw D; Mostaghimi P; Armstrong RT, 2019, 'The dynamic behaviour of coal relative permeability curves', Fuel, vol. 253, pp. 293 - 304, http://dx.doi.org/10.1016/j.fuel.2019.04.107
2019
Singh A; Armstrong RT; Regenauer-Lieb K; Mostaghimi P, 2019, 'Rock Characterization Using Gray-Level Co-Occurrence Matrix: An Objective Perspective of Digital Rock Statistics', Water Resources Research, vol. 55, pp. 1912 - 1927, http://dx.doi.org/10.1029/2018WR023342
2019
Zhang Y; Mostaghimi P; Armstrong RT, 2019, 'On the challenges of greyscale-based quantifications using X-ray computed microtomography', Journal of Microscopy, vol. 275, pp. 82 - 96, http://dx.doi.org/10.1111/jmi.12805
2019
Alzahid YA; Mostaghimi P; Alqahtani NJ; Sun C; Lu X; Armstrong RT, 2019, 'Oil mobilization and solubilization in porous media by in situ emulsification', Journal of Colloid and Interface Science, vol. 554, pp. 554 - 564, http://dx.doi.org/10.1016/j.jcis.2019.07.009
2019
Gerami A; Armstrong RT; Jing Y; Wahid FA; Arandiyan H; Mostaghimi P, 2019, 'Microscale insights into gas recovery from bright and dull bands in coal', Journal of Petroleum Science and Engineering, vol. 172, pp. 373 - 382, http://dx.doi.org/10.1016/j.petrol.2018.08.072
2019
Gerami A; Alzahid Y; Mostaghimi P; Kashaninejad N; Kazemifar F; Amirian T; Mosavat N; Ebrahimi Warkiani M; Armstrong RT, 2019, 'Microfluidics for Porous Systems: Fabrication, Microscopy and Applications', Transport in Porous Media, vol. 130, pp. 277 - 304, http://dx.doi.org/10.1007/s11242-018-1202-3
2019
Singh A; Armstrong R; Regenauer-Lieb K; Mostaghimi P, 2019, 'Investigating rock micro-structure of sandstones by pattern recognition on their X-ray images', ASEG Extended Abstracts, vol. 2019, pp. 1 - 3, http://dx.doi.org/10.1080/22020586.2019.12073166
2019
Armstrong RT; McClure JE; Robins V; Liu Z; Arns CH; Schlüter S; Berg S, 2019, 'Porous Media Characterization Using Minkowski Functionals: Theories, Applications and Future Directions', Transport in Porous Media, vol. 130, pp. 305 - 335, http://dx.doi.org/10.1007/s11242-018-1201-4
2019
Alzahid YA; Mostaghimi P; Walsh SDC; Armstrong RT, 2019, 'Flow regimes during surfactant flooding: The influence of phase behaviour', Fuel, vol. 236, pp. 851 - 860, http://dx.doi.org/10.1016/j.fuel.2018.08.086
2019
Amirian T; Haghighi M; Sun C; Armstrong RT; Mostaghimi P, 2019, 'Geochemical Modeling and Microfluidic Experiments to Analyze Impact of Clay Type and Cations on Low-Salinity Water Flooding', Energy and Fuels, vol. 33, pp. 2888 - 2896, http://dx.doi.org/10.1021/acs.energyfuels.8b04145
2019
Niu Y; Mostaghimi P; Shikhov I; Chen Z; Armstrong RT, 2018, 'Coal permeability: Gas slippage linked to permeability rebound', Fuel, vol. 215, pp. 844 - 852, http://dx.doi.org/10.1016/j.fuel.2017.11.082
2018
D'Eurydice MN; Arns CH; Arns JY; Armstrong RT, 2018, 'Dynamic imaging of multiphase flow through porous media using 4D cumulative reconstruction', Journal of Microscopy, vol. 272, pp. 12 - 24, http://dx.doi.org/10.1111/jmi.12728
2018
Alzahid YA; Mostaghimi P; Gerami A; Singh A; Privat K; Amirian T; Armstrong RT, 2018, 'Functionalisation of Polydimethylsiloxane (PDMS)- Microfluidic Devices coated with Rock Minerals', Scientific Reports, vol. 8, http://dx.doi.org/10.1038/s41598-018-33495-8
2018
Lu X; Armstrong RT; Mostaghimi P, 2018, 'High-pressure X-ray imaging to interpret coal permeability', Fuel, vol. 226, pp. 573 - 582, http://dx.doi.org/10.1016/j.fuel.2018.03.172
2018
Armstrong RT, 2018, 'Multiphase flow in porous rock imaged under dynamic flow conditions with fast X-ray computed microtomography', Petrophysics, vol. 55
2018
Zou S; Armstrong RT; Arns JY; Arns CH; Hussain F, 2018, 'Experimental and Theoretical Evidence for Increased Ganglion Dynamics During Fractional Flow in Mixed-Wet Porous Media', Water Resources Research, vol. 54, pp. 3277 - 3289, http://dx.doi.org/10.1029/2017WR022433
2018
Sewnun D; Joughin W; Armstrong R; Cooper A, 2018, 'Keyblock stability analysis of longhole stopes', Journal of the Southern African Institute of Mining and Metallurgy, vol. 118, pp. 243 - 250, http://dx.doi.org/10.17159/2411-9717/2018/v118n3a7
2018
McClure JE; Armstrong RT; Berrill MA; Schlüter S; Berg S; Gray WG; Miller CT, 2018, 'Geometric state function for two-fluid flow in porous media', Physical Review Fluids, vol. 3, http://dx.doi.org/10.1103/PhysRevFluids.3.084306
2018
Liu Z; McClure JE; Armstrong RT, 2018, 'Influence of wettability on phase connectivity and electrical resistivity', Physical Review E, vol. 98, http://dx.doi.org/10.1103/PhysRevE.98.043102
2018
Zhang Y; Mostaghimi P; Fogden A; Sheppard A; Arena A; Middleton J; Armstrong RT, 2018, 'Time-Lapsed Visualization and Characterization of Shale Diffusion Properties Using 4D X-ray Microcomputed Tomography', Energy and Fuels, vol. 32, pp. 2889 - 2900, http://dx.doi.org/10.1021/acs.energyfuels.7b03191
2018
Jing Y; Armstrong RT; Mostaghimi P, 2017, 'Impact of Mineralization on Digital Coal Properties', Energy and Fuels, vol. 31, pp. 11558 - 11568, http://dx.doi.org/10.1021/acs.energyfuels.7b01401
2017
Jing Y; Armstrong RT; Ramandi HL; Mostaghimi P, 2017, 'Topological Characterization of Fractured Coal', Journal of Geophysical Research: Solid Earth, vol. 122, pp. 9849 - 9861, http://dx.doi.org/10.1002/2017JB014667
2017
Jing Y; Armstrong RT; Mostaghimi P, 2017, 'Digital coal: Generation of fractured cores with microscale features', Fuel, vol. 207, pp. 93 - 101, http://dx.doi.org/10.1016/j.fuel.2017.06.051
2017
Jing Y; Armstrong RT; Mostaghimi P, 2017, 'Rough-walled discrete fracture network modelling for coal characterisation', Fuel, vol. 191, pp. 442 - 453, http://dx.doi.org/10.1016/j.fuel.2016.11.094
2017
Siregar I; Niu Y; Mostaghimi P; Armstrong RT, 2017, 'Coal ash content estimation using fuzzy curves and ensemble neural networks for well log analysis', International Journal of Coal Geology, vol. 181, pp. 11 - 22, http://dx.doi.org/10.1016/j.coal.2017.08.003
2017
Liu Z; Herring A; Arns C; Berg S; Armstrong RT, 2017, 'Pore-Scale Characterization of Two-Phase Flow Using Integral Geometry', Transport in Porous Media, vol. 118, pp. 99 - 117, http://dx.doi.org/10.1007/s11242-017-0849-5
2017
Mostaghimi P; Armstrong RT; Gerami A; Hu Y; Jing Y; Kamali F; Liu M; Liu Z; Lu X; Ramandi HL; Zamani A; Zhang Y, 2017, 'Cleat-scale characterisation of coal: An overview', Journal of Natural Gas Science and Engineering, vol. 39, pp. 143 - 160, http://dx.doi.org/10.1016/j.jngse.2017.01.025
2017
Zhang Y; Mostaghimi P; Fogden A; Middleton J; Sheppard A; Armstrong RT, 2017, 'Local diffusion coefficient measurements in shale using dynamic micro-computed tomography', Fuel, vol. 207, pp. 312 - 322, http://dx.doi.org/10.1016/j.fuel.2017.06.050
2017
Gerami A; Armstrong RT; Johnston B; Warkiani ME; Mosavat N; Mostaghimi P, 2017, 'Coal-on-a-Chip: Visualizing Flow in Coal Fractures', Energy and Fuels, vol. 31, pp. 10393 - 10403, http://dx.doi.org/10.1021/acs.energyfuels.7b01046
2017
Ramandi HL; Mostaghimi P; Armstrong RT, 2017, 'Digital rock analysis for accurate prediction of fractured media permeability', Journal of Hydrology, vol. 554, pp. 817 - 826, http://dx.doi.org/10.1016/j.jhydrol.2016.08.029
2017
Ramandi HL; Armstrong RT; Mostaghimi P, 2016, 'Micro-CT image calibration to improve fracture aperture measurement', Case Studies in Nondestructive Testing and Evaluation, vol. 6, pp. 4 - 13, http://dx.doi.org/10.1016/j.csndt.2016.03.001
2016
Schlüter S; Berg S; Rücker M; Armstrong RT; Vogel HJ; Hilfer R; Wildenschild D, 2016, 'Pore-scale displacement mechanisms as a source of hysteresis for two-phase flow in porous media', Water Resources Research, vol. 52, pp. 2194 - 2205, http://dx.doi.org/10.1002/2015WR018254
2016
Jing Y; Armstrong RT; Lamei Ramandi H; Mostaghimi P, 2016, 'Coal cleat reconstruction using micro-computed tomography imaging', Fuel, vol. 181, pp. 286 - 299, http://dx.doi.org/10.1016/j.fuel.2016.04.127
2016
Armstrong RT; Berg S; Dinariev O; Evseev N; Klemin D; Koroteev D; Safonov S, 2016, 'Modeling of Pore-Scale Two-Phase Phenomena Using Density Functional Hydrodynamics', Transport in Porous Media, vol. 112, pp. 577 - 607, http://dx.doi.org/10.1007/s11242-016-0660-8
2016
Gerami A; Mostaghimi P; Armstrong RT; Zamani A; Warkiani ME, 2016, 'A microfluidic framework for studying relative permeability in coal', International Journal of Coal Geology, vol. 159, pp. 183 - 193, http://dx.doi.org/10.1016/j.coal.2016.04.002
2016
Unsal E; Broens M; Armstrong RT, 2016, 'Pore Scale Dynamics of Microemulsion Formation', Langmuir, vol. 32, pp. 7096 - 7108, http://dx.doi.org/10.1021/acs.langmuir.6b00821
2016
Armstrong RT; McClure JE; Berrill MA; Rücker M; Schlüter S; Berg S, 2016, 'Beyond Darcy's law: The role of phase topology and ganglion dynamics for two-fluid flow', Physical Review E, vol. 94, http://dx.doi.org/10.1103/PhysRevE.94.043113
2016
Berg S; Rücker M; Ott H; Georgiadis A; van der Linde H; Enzmann F; Kersten M; Armstrong RT; de With S; Becker J; Wiegmann A, 2016, 'Connected pathway relative permeability from pore-scale imaging of imbibition', Advances in Water Resources, vol. 90, pp. 24 - 35, http://dx.doi.org/10.1016/j.advwatres.2016.01.010
2016
Ramandi HL; Mostaghimi P; Armstrong RT; Saadatfar M; Pinczewski WV, 2016, 'Porosity and permeability characterization of coal: a micro-computed tomography study', International Journal of Coal Geology, vol. 154, pp. 57 - 68, http://dx.doi.org/10.1016/j.coal.2015.10.001
2016
Armstrong RT; Evseev N; Koroteev D; Berg S, 2015, 'Modeling the velocity field during Haines jumps in porous media', Advances in Water Resources, vol. 77, pp. 57 - 68, http://dx.doi.org/10.1016/j.advwatres.2015.01.008
2015
Hilfer R; Armstrong RT; Berg S; Georgiadis A; Ott H, 2015, 'Capillary saturation and desaturation', Physical Review E, vol. 92, pp. 063023 - 063023, http://dx.doi.org/10.1103/PhysRevE.92.063023
2015
Armstrong RT; Wildenschild D; Bay BK, 2015, 'The effect of pore morphology on microbial enhanced oil recovery', Journal of Petroleum Science and Engineering, vol. 130, pp. 16 - 25, http://dx.doi.org/10.1016/j.petrol.2015.03.010
2015
Lamei Ramandi H; Mostaghimi PM; Armstrong RM; Arns CR; Saadatfar MS; Sok RS; Pinczewski VP; Knackstedt MK, 2015, 'Pore scale imaging and modelling of coal properties', The APPEA Journal, vol. 55, pp. 468 - 468, http://dx.doi.org/10.1071/AJ14103
2015
Berg S; Armstrong RT; Georgiadis A; Ott H; Schwing A; Neiteler R; Brussee N; Makurat A; Rucker M; Leu L; Wolf M; Khan F; Enzmann F; Kersten M, 2015, 'Onset of Oil Mobilization and Nonwetting-Phase Cluster-Size Distribution', PETROPHYSICS, vol. 56, pp. 15 - 22, http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000350266400003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=891bb5ab6ba270e68a29b250adbe88d1
2015
Kimbrel EH; Herring AL; Armstrong RT; Lunati I; Bay BK; Wildenschild D, 2015, 'Experimental characterization of nonwetting phase trapping and implications for geologic CO2 sequestration', International Journal of Greenhouse Gas Control, vol. 42, pp. 1 - 15, http://dx.doi.org/10.1016/j.ijggc.2015.07.011
2015
Rücker M; Berg S; Armstrong RT; Georgiadis A; Ott H; Schwing A; Neiteler R; Brussee N; Makurat A; Leu L; Wolf M; Khan F; Enzmann F; Kersten M, 2015, 'From connected pathway flow to ganglion dynamics', Geophysical Research Letters, vol. 42, pp. 3888 - 3894, http://dx.doi.org/10.1002/2015GL064007
2015
Stacey TR; Armstrong R; Terbrugge PJ, 2015, 'Experience with the development and use of a simple DFN approach over a period of 30 years', Transactions of the Institutions of Mining and Metallurgy, Section A: Mining Technology, vol. 124, pp. 178 - 187, http://dx.doi.org/10.1179/1743286315Y.0000000020
2015
Leu L; Berg S; Enzmann F; Armstrong RT; Kersten M, 2014, 'Fast X-ray Micro-Tomography of Multiphase Flow in Berea Sandstone: A Sensitivity Study on Image Processing', Transport in Porous Media, vol. 105, pp. 451 - 469, http://dx.doi.org/10.1007/s11242-014-0378-4
2014
Armstrong RT; Ott H; Georgiadis A; Rücker M; Schwing A; Berg S, 2014, 'Subsecond pore-scale displacement processes and relaxation dynamics in multiphase flow', Water Resources Research, vol. 50, pp. 9162 - 9176, http://dx.doi.org/10.1002/2014WR015858
2014
Armstrong RT; Georgiadis A; Ott H; Klemin D; Berg S, 2014, 'Critical capillary number: Desaturation studied with fast X-ray computed microtomography', Geophysical Research Letters, vol. 41, pp. 55 - 60, http://dx.doi.org/10.1002/2013GL058075
2014
Joekar-Niasar V; Doster F; Armstrong RT; Wildenschild D; Celia MA, 2013, 'Trapping and hysteresis in two-phase flow in porous media: A pore-network study', Water Resources Research, vol. 49, pp. 4244 - 4256, http://dx.doi.org/10.1002/wrcr.20313
2013
Armstrong RT; Berg S, 2013, 'Interfacial velocities and capillary pressure gradients during Haines jumps', Physical Review E, vol. 88, pp. 043010 - 043010, http://dx.doi.org/10.1103/PhysRevE.88.043010
2013
Wildenschild D; Rivers ML; Porter ML; Iltis GC; Armstrong RT; Davit Y, 2013, 'Using Synchrotron-Based X-Ray Microtomography and Functional Contrast Agents in Environmental Applications', Soil–Water–Root Processes: Advances in Tomography and Imaging, pp. 1 - 22
2013
Armstrong R; Evseev N; Gurpinar OM; Hathon LA; Klemin DV; Dinariev O; Berg S; Safonov S; Myers M; de Jong H; others , 2013, 'Application of Digital Rock Technology for Chemical EOR Screening', SPE Enhanced Oil Recovery Conference, pp. 480 - 491
2013
Armstrong RT; Porter ML; Wildenschild D, 2012, 'Linking pore-scale interfacial curvature to column-scale capillary pressure', Advances in Water Resources, vol. 46, pp. 55 - 62, http://dx.doi.org/10.1016/j.advwatres.2012.05.009
2012
Armstrong RT; Wildenschild D, 2012, 'Investigating the pore-scale mechanisms of microbial enhanced oil recovery', Journal of Petroleum Science and Engineering, vol. 94, pp. 155 - 164, http://dx.doi.org/10.1016/j.petrol.2012.06.031
2012
Armstrong RT; Wildenschild D, 2012, 'Microbial enhanced oil recovery in fractional-wet systems: A pore-scale investigation', Transport in porous media, vol. 92, pp. 819 - 835, http://dx.doi.org/10.1007/s11242-011-9934-3
2012
Iltis GC; Armstrong RT; Jansik DP; Wood BD; Wildenschild D, 2011, 'Imaging biofilm architecture within porous media using synchrotron-based X-ray computed microtomography', Water Resources Research, vol. 47, http://dx.doi.org/10.1029/2010WR009410
2011
Armstrong R; Ajo-Franklin J, 2011, 'Investigating biomineralization using synchrotron based X-ray computed microtomography', Geophysical Research Letters, vol. 38, http://dx.doi.org/10.1029/2011GL046916
2011
Wildenschild D; Armstrong RT, 2011, 'The effects of fractional wettability on microbial enhanced oil recovery', AGU Fall Meeting Abstracts, vol. 1, pp. 1244 - 1244
2011
Wildenschild D; Armstrong RT; Herring AL; Young IM; William Carey J, 2011, 'Exploring capillary trapping efficiency as a function of interfacial tension, viscosity, and flow rate', Energy Procedia, vol. 4, pp. 4945 - 4952, http://dx.doi.org/10.1016/j.egypro.2011.02.464
2011
Armstrong RT; Wildenschild D; others , 2011, 'Decoupling the Mechanisms of Microbial Enhanced Oil Recovery', SPE Annual Technical Conference and Exhibition, vol. 3, pp. 2406 - 2423
2011
Herring AL; Wildenschild D; Harper E; Armstrong RT; Carey JW, 2011, 'Quantifying the effects of fluid properties and flow rates on the effectiveness of capillary trapping of CO2 in a Bentheimer sandstone', AGU Fall Meeting Abstracts, vol. 1, pp. 1282 - 1282
2011
Iltis GC; Armstrong RT; Jansik DP; Wood BD; Wildenschild D, 2011, 'Technical Notes-W02601 Imaging biofilm architecture within porous media using synchrotron-based X-ray computed microtomography (doi 10.1029/2010WR009410)', Water Resources Research, vol. 47
2011
Iltis GC; Armstrong RT; Jansik DP; Wood BD; Wildenschild D, 2011, 'Imaging biofilm architecture within', Imaging biofilm architecture within
2011
Armstrong RT; Porter ML; Wildenschild D, 2011, 'Analysis of interfacial curvature during drainage and imbibition', AGU Fall Meeting Abstracts, vol. 1, pp. 02 - 02
2011
Harper E; Wildenschild D; Armstrong RT; Herring AL, 2011, 'Optimization of capillary trapping for application in geological carbon dioxide sequestration', AGU Fall Meeting Abstracts, vol. 1, pp. 1281 - 1281
2011
Armstrong RT; Wildenschild D, 2010, 'Designer-wet micromodels for studying potential changes in wettability during microbial enhanced oil recovery', AGU Fall Meeting Abstracts, vol. 1, pp. 1061 - 1061
2010
Molins S; Ajo Franklin JB; Armstrong RT; Nico PS; Silin D, 2010, 'Biogeochemically-driven evolution of pore structures and flow paths: experimental studies and modeling', AGU Fall Meeting Abstracts, vol. 1, pp. 1110 - 1110
2010
Iltis G; Armstrong RT; Jansik DP; Wood BD; Wildenschild D, 2009, 'Biofilm Growth in Porous Media: Validation of three-dimensional characterization of biofilm growth in packed bead columns', AGU Fall Meeting Abstracts, vol. 1, pp. 08 - 08
2009
Armstrong RT; Ajo Franklin JB, 2009, 'Probing the Dynamics of Biomineralization at the Pore Scale Using X-ray Computed Tomography', AGU Fall Meeting Abstracts, vol. 1, pp. 0976 - 0976
2009
Armstrong RT; Jansik DP; Wildenschild D; Wood BD, 2008, 'Imaging Biofilm Within Porous Media Using Synchrotron Based X-Ray Computed Microtomography', AGU Fall Meeting Abstracts, vol. 1, pp. 03 - 03
2008
Cordes AA; Meloy J; Andersen E; Cleveland M; Barnhart C; Armstrong R, 2005, 'Removal of Ammonia from Semiconductor Wastewater', The 2005 Annual Meeting
2005
Stacey TR; Xianbin Y; Armstrong R; Keyter GJ, 2003, 'New slope stability considerations for deep open pit mines', Journal of The South African Institute of Mining and Metallurgy, vol. 103, pp. 373 - 389
2003
Book Chapters
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McClure JE; Yin J; Armstrong RT; Maheshwari KC; Wilkinson S; Vlcek L; Da Wang Y; Berrill MA; Rivers M, 2021, 'Toward real-time analysis of synchrotron micro-tomography data: Accelerating experimental workflows with AI and HPC', in Communications in Computer and Information Science, Springer International Publishing, pp. 226 - 239, http://dx.doi.org/10.1007/978-3-030-63393-6_15
2021
Conference Papers
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Rushood IA; Alqahtani N; da Wang Y; Shabaninejad M; Armstrong R; Mostaghimi P, 2020, 'Segmentation of X-ray images of rocks using deep learning', in Proceedings - SPE Annual Technical Conference and Exhibition, Society of Petroleum Engineers, presented at SPE Annual Technical Conference and Exhibition, http://dx.doi.org/10.2118/201282-ms
2020
Yuan M; Jing Y; Wang YD; Armstrong R; Mostaghimi P, 2020, 'A coupled diffusion model for gas transport in tight unconventional reservoirs', in Society of Petroleum Engineers - Abu Dhabi International Petroleum Exhibition and Conference 2020, ADIP 2020, Society of Petroleum Engineers, presented at Abu Dhabi International Petroleum Exhibition & Conference, http://dx.doi.org/10.2118/202616-ms
2020
Jing Y; Armstrong R; Mostaghimi P, 2019, 'Deterministic pipe network modelling for fractured rocks', in Society of Petroleum Engineers - Abu Dhabi International Petroleum Exhibition and Conference 2019, ADIP 2019, Abu Dhabi, UAE, presented at Abu Dhabi International Petroleum Exhibition & Conference, Abu Dhabi, UAE, 11 November 2019, http://dx.doi.org/10.2118/197960-MS
2019
Aborshaid H; Alzahid Y; Mostaghimi P; McClure J; Chen C; Sun C; Armstrong R; Asali M, 2019, 'Synchrotron-based X-ray micro-computed tomography for real time investigation of alkaline surfactant flooding', in Society of Petroleum Engineers - Abu Dhabi International Petroleum Exhibition and Conference 2019, ADIP 2019, Abu Dhabi, UAE, presented at Abu Dhabi International Petroleum Exhibition & Conference, 11-14 November 2019, Abu Dhabi, UAE, Abu Dhabi, UAE, 11 November 2019 - 14 November 2019, http://dx.doi.org/10.2118/197741-MS
2019
Rahayyem M; Mostaghimi P; Alzahid YA; Halim A; Evangelista L; Armstrong RT, 2019, 'Enzyme enhanced oil recovery EEOR: A microfluidics approach', in SPE Middle East Oil and Gas Show and Conference, MEOS, Proceedings, Manama, Bahrain, presented at SPE Middle East Oil and Gas Show and Conference held in Manama, Bahrain, 18-21 March 2019., Manama, Bahrain, 18 March 2019 - 21 March 2019, http://dx.doi.org/10.2118/195116-MS
2019
Lu X; Armstrong R; Yuan M; Zhang Y; Mostaghimi P, 2018, 'Analysis of diffusion coefficient and fracture aperture in coal using micro-computed tomography imaging', in Society of Petroleum Engineers - Abu Dhabi International Petroleum Exhibition and Conference 2018, ADIPEC 2018, Society of Petroleum Engineers, Abu Dhabi, UAE, presented at Abu Dhabi International Petroleum Exhibition & Conference, Abu Dhabi, UAE, 12 November 2018 - 15 November 2018, http://dx.doi.org/10.2118/193003-MS
2018
Mostaghimi P; Singh A, 2018, 'Automatic Fracture Identification using X-ray Images', in Automatic Fracture Identification using X-ray Images, Australian Society of Exploration Geophysicists, Australia, presented at Australian Society of Exploration Geophysicists, Australia, 18 February 2018 - 21 February 2018, http://dx.doi.org/10.1071/ASEG2018abT6_2C
2018
Alqahtani N; Armstrong RT; Mostaghimi P, 2018, 'Deep learning convolutional neural networks to predict porous media properties', in Society of Petroleum Engineers - SPE Asia Pacific Oil and Gas Conference and Exhibition 2018, APOGCE 2018, Society of Petroleum Engineers, Brisbane, Australia, presented at SPE Asia Pacific Oil and Gas Conference and Exhibition, Brisbane, Australia, 23 October 2018 - 25 October 2018, http://dx.doi.org/10.2118/191906-MS
2018
Shaw D; Mostaghimi P; Hussain F; Armstrong RT, 2018, 'Insights, trends and challenges associated with measuring coal relative permeability', in E3S Web of Conferences, Trondheim, Norway, presented at SCA, Trondheim, Norway, 26 July 2018 - 31 August 2018, http://dx.doi.org/10.1051/e3sconf/20198901004
2018
Pillay O; Armstrong R; Terbrugge PJ, 2017, 'Otjikoto gold mine–a case study in pit slope design', in ISRM AfriRock - Rock Mechanics for Africa, pp. 317 - 330
2017
Armstrong RT, 2017, 'Determination of Local Diffusion Coefficients and Directional Anisotropy in Shale From Dynamic Micro-CT Imaging', in SPE/AAPG/SEG Unconventional Resources Technology Conference 2017, Austin, Texas, pp. 249DUMMY, presented at Unconventional Resources Technology Conference (URTEC, Austin, Texas, 17 July 2017 - 21 July 2017, http://dx.doi.org/10.15530/urtec-2017-2695407
2017
Jing Y; Armstrong R; Mostaghimi P, 2017, 'DigiCoal: A numerical toolbox for fractured coal characterisation', in Society of Petroleum Engineers - SPE Abu Dhabi International Petroleum Exhibition and Conference 2017, http://dx.doi.org/10.2118/188822-ms
2017
Alsahid YA; Mostaghimi P; Warkiani ME; Armstrong RT; Joekar-Niasar V; Karadimitriou N, 2017, 'Alkaline Surfactant Polymer Flooding: What Happens at the Pore Scale?', in 79th EAGE Conference and Exhibition 2017 - SPE EUROPEC, EAGE Publications BV, presented at 79th EAGE Conference and Exhibition 2017 - SPE EUROPEC, 12 June 2017 - 15 June 2017, http://dx.doi.org/10.3997/2214-4609.201701591
2017
Armstrong RT, 2017, 'Alkaline Surfactant Polymer Flooding: What Happens at the Pore Scale?', in Society of Petroleum Engineers - SPE Europec Featured at 79th EAGE Conference and Exhibition, Paris France, pp. 386 - 402, presented at SPE Europec featured at 79th EAGE Conference and Exhibition, Paris France, 04 June 2017 - 08 June 2017
2017
Mostaghimi P, 2016, 'Flow in Coal Seams: An Unconventional Challenge', in Flow in Coal Seams: An Unconventional Challenge, AGU Fall Meeting, San Fracisco, presented at AGU Fall Meeting, San Fracisco, 12 December 2016 - 16 December 2016
2016
MCClure ; Armstrong RT; Berg ; Gray , 2016, 'The effect of topology on two-fluid flow in porous media', in The effect of topology on two-fluid flow in porous media, AGU Fall Meeting Abstracts, SanFrancisco, presented at AGU Fall Meeting Abstracts, SanFrancisco, 12 December 2016 - 16 December 2016
2016
Newby L; Armstrong R; Maphanga G, 2016, 'Analysis of a slope failure above critical infrastructure', in Proceedings of the 1st Southern African Geotechnical Conference, 2016, pp. 335 - 340, http://dx.doi.org/10.1201/b21335-59
2016
Mostaghimi P, 2016, 'Pore Topology Method: Experimental Validation and Dynamic Features', in Pore Topology Method: Experimental Validation and Dynamic Features, AGU Fall Meeting, San Francisco, presented at AGU Fall Meeting, San Francisco, 12 December 2016 - 16 December 2016
2016
Wildenschild ; Harper ; Armstrong RT, 2016, 'The Effect of Original and Initial Saturation on Residual Nonwetting Phase Capillary Trapping Efficiency', in The Effect of Original and Initial Saturation on Residual Nonwetting Phase Capillary Trapping Efficiency, AGU Fall Meeting, San Francisco, presented at AGU Fall Meeting, San Francisco, 12 December 2016 - 16 December 2016
2016
Armstrong RT; McClure JE; Berill MA; Rücker M; Schlüter S; Berg S, 2016, 'Flow regimes during immiscible displacement', in Petrophysics, SOC PETROPHYSICISTS & WELL LOG ANALYSTS-SPWLA, 8866 GULF FREEWAY, STE 320, HOUSTON, TX 77017 USA, Snowmass, CO, pp. 10 - 18, presented at SCA International Symposium, Snowmass, CO, 21 August 2016 - 26 August 2016, https://www.onepetro.org/journals/Petrophysics/58/01
2016
Mostaghimi P; Armstrong R; Gerami A; Hu Y; Jing Y; Kamali F; Liu M; Liu Z; Lu X; Lamei Ramandi H; Zamani A; Zhang Y, 2016, 'Pore Scale Characterisation of Coal: An Unconventional Challenge', in Society of Petroleum Engineers, Abu Dhabi, presented at Zhang, Abu Dhabi, 07 November 2016 - 10 November 2016, http://dx.doi.org/10.2118/183411-MS
2016
Armstrong RT, 2016, 'Combining high-resolution with larger volume images for improved characterization of mudstone reservoirs', in SPWLA 57th Annual Logging Symposium 2016, Austin Texas, presented at SPWLA 57th Annual Logging Symposium, Austin Texas, 25 June 2016 - 29 June 2016
2016
Ramandi HL; Armstrong RT; Mostaghimi P; Saadatfar M; Pinczewsk WV, 2015, 'X-ray micro-computed tomography imaging for coal characterization', in Society of Petroleum Engineers - SPE Asia Pacific Unconventional Resources Conference and Exhibition, Brisbane, Australia, presented at SPE Asia Pacific Unconventional Resources Conference and Exhibition, Brisbane, Australia, 09 November 2015 - 11 November 2015, https://www.onepetro.org/conference-paper/SPE-177017-MS
2015
Fogden A; Olson T; Cheng Q; Middleton J; Kingston A; Turner M; Sheppard A; Armstrong R, 2015, 'Dynamic micro-CT imaging of diffusion in unconventionals', in Society of Petroleum Engineers - Unconventional Resources Technology Conference, URTeC 2015, http://dx.doi.org/10.2118/178617-ms
2015
Ramandi HL; Armstrong RT; Mostaghimi P; Saadatfar M; Pinczewsk WV, 2015, 'X-ray micro-computed tomography imaging for coal characterization', in Society of Petroleum Engineers - SPE Asia Pacific Unconventional Resources Conference and Exhibition, http://dx.doi.org/10.2118/177017-ms
2015
Fogden A; Olson T; Cheng Q; Middleton J; Kingston A; Turner M; Sheppard A; Armstrong R, 2015, 'Dynamic micro-CT imaging of diffusion in unconventionals', in Society of Petroleum Engineers - Unconventional Resources Technology Conference, URTeC 2015
2015
Armstrong RT, 2015, 'A Combined Micro-CT Imaging/Microfluidic Approach for Understating Methane Recovery in Coal Seam Gas Reservoirs', in A Combined Micro-CT Imaging/Microfluidic Approach for Understating Methane Recovery in Coal Seam Gas Reservoirs, AGU Fall Meeting Abstracts, SanFrancisco, presented at AGU Fall Meeting Abstracts, SanFrancisco, 14 December 2015 - 18 December 2015
2015
Armstrong RT, 2015, 'Pore-Scale imaging and modeling of coal properties', in Pore-Scale imaging and modeling of coal properties, APPEA, Melbourne, Australia, presented at APPEA, Melbourne, Australia, 17 May 2015 - 20 May 2015
2015
Armstrong RT, 2015, 'Microfluidic experiments for understanding transport phenomena in coal seam reservoirs', in Microfluidic experiments for understanding transport phenomena in coal seam reservoirs, Society of Core Analysts, Newfoundland, Canada, presented at Society of Core Analysts, Newfoundland, Canada, 16 August 2015 - 21 August 2015
2015
Unsal E; Broens M; Buijse M; Boersma D; Makurat A; Armstrong RT, 2015, 'Visualization of in situ microemulsion phase', in Society of Petroleum Engineers - SPE Asia Pacific Enhanced Oil Recovery Conference, EORC 2015, Kuala Lumpur, Malaysia, pp. 897 - 903, presented at PE Asia Pacific Enhanced Oil Recovery Conference, EORC 2015, Kuala Lumpur, Malaysia, 11 August 2015 - 14 August 2015, https://www.onepetro.org/download/conference-paper/SPE-174651-MS?id=conference-paper/SPE-174651-MS
2015
Mostaghimi P; Armstrong RT; Gerami A; Ebrahimi Warkiani M; Lamei ramandi H; Pinczewski WV, 2015, 'Micro-CT imaging and microfluidics for understanding flow in coal seam reservoirs', in International Symposium of the Society of Core Analysts, SCA, SCA
2015
Armstrong RT, 2015, 'Using Microfluidics for Visualisation of Displacement Mechanisms on Pore Network Models', in Using Microfluidics for Visualisation of Displacement Mechanisms on Pore Network Models, AGU Fall Meeting, SanFrancisco, presented at AGU Fall Meeting, SanFrancisco, 14 December 2015 - 18 December 2015
2015
Armstrong RT, 2015, 'The fate of oil clusters during fractional flow: Trajectories in the saturation-capillary number space', in The fate of oil clusters during fractional flow: Trajectories in the saturation-capillary number space, Society of Core Analyst, St. Johns Newfoundland, presented at Society of Core Analyst, St. Johns Newfoundland, 16 August 2015 - 21 August 2015
2015
Armstrong RT, 2014, 'Interfacial velocities and the resulting velocity field during a Haines jump', in Interfacial velocities and the resulting velocity field during a Haines jump, Society of Core Analysts, Avignon France, presented at Society of Core Analysts, Avignon France, 08 September 2014 - 11 September 2014
2014
Armstrong RT, 2014, 'ONSET OF OIL MOBILIZATION AND NON - WETTING PHASE CLUSTER SIZE DISTRIBUTION', in ONSET OF OIL MOBILIZATION AND NON - WETTING PHASE CLUSTER SIZE DISTRIBUTION, Society of Core Analysts, Avignon France, presented at Society of Core Analysts, Avignon France, 08 September 2014 - 11 September 2014
2014
Armstrong RT, 2013, 'Multiphase flow in porous rock imaged under dynamic flow conditions with fast X-ray computed tomography', in Multiphase flow in porous rock imaged under dynamic flow conditions with fast X-ray computed tomography, Society of Core Analysts, Napa Valley, California, presented at Society of Core Analysts, Napa Valley, California, 16 September 2013 - 19 September 2013
2013
Armstrong RT, 2013, 'Application of digital rock technology for chemical EOR screening', in Application of digital rock technology for chemical EOR screening, SPE enhanced oil recovery conference, Kuala Lumpur, Malaysia, presented at SPE enhanced oil recovery conference, Kuala Lumpur, Malaysia, 02 July 2013 - 04 July 2013
2013
Armstrong RT, 2013, 'DIRECT HYDRODYNAMIC SIMULATION OF MULTIPHASE FLOW IN POROUS ROCK', in DIRECT HYDRODYNAMIC SIMULATION OF MULTIPHASE FLOW IN POROUS ROCK, Society of Core Analysts, Napp Valley California, presented at Society of Core Analysts, Napp Valley California, 16 September 2013 - 19 September 2013
2013
Armstrong RT, 2012, 'Emulsion formation at the Pore-Scale', in Emulsion formation at the Pore-Scale, AGU Fall Meeting, SanFrancisco, presented at AGU Fall Meeting, SanFrancisco, 10 December 2012 - 14 December 2012
2012
Armstrong RT, 2012, 'Optimization geological sequestration of CO2 by capillary trapping mechanisms', in Optimization geological sequestration of CO2 by capillary trapping mechanisms, AGU Fall Meeting, SanFrancisco, presented at AGU Fall Meeting, SanFrancisco, 10 December 2012 - 14 December 2012
2012
Armstrong RT, 2012, 'A Pore Scale Explanation for Displacement Efficiency', in A Pore Scale Explanation for Displacement Efficiency, AGU Fall Meeting, SanFrancisco, presented at AGU Fall Meeting, SanFrancisco, 10 December 2012 - 14 December 2012
2012
Armstrong RT; Pentland CH; Berg S; Hummel J; Lichau D; Bernard L, 2012, 'ESTIMATION OF CURVATURE FROM MICRO-CT LIQUID-LIQUID DISPLACEMENT STUDIES WITH PORE SCALE RESOLUTION', in Society of Core Analyst
2012
Dominy SC; Platten IM; Howard LE; Elangovan P; Armstrong R; Minnitt RCA; Abel RL, 2011, 'Characterisation of gold ores by X-ray computed tomography - Part 2: Applications to the determination of gold particle size and distribution', in GeoMet 2011 - 1st AusIMM International Geometallurgy Conference 2011, pp. 293 - 309
2011
Wu Y; Ajo-Franklin J; Armstrong R; Hubbard S, 2010, 'Noninvasive geophysical imaging of ureolytic CaCO3 precipitation', in GEOCHIMICA ET COSMOCHIMICA ACTA, PERGAMON-ELSEVIER SCIENCE LTD THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND, pp. A1149 - A1149, PERGAMON-ELSEVIER SCIENCE LTD THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
2010
Wildenschild D; Armstrong RT; Jansik DP; Wood BD, 2009, 'Using synchrotron-based microtomographic imaging to characterize biofilm architecture in porous media', in EGU General Assembly Conference Abstracts, pp. 6369 - 6369
2009
Armstrong R; Stacey TR, 2003, 'A review of information on the influence of plan curvature on rock slope stability and its effect on the volume of wedge failures', in 10th ISRM Congress, pp. 57 - 61
2003