Professor

Professor Ryan Armstrong

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

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

Engineering

Mineral and Energy Resources Engineering

My area of research is multidisciplinary with aspects of applied mathematics, petroleum engineering, computer science, and fundamental physics. My research integrates these disciplines into a comprehensive framework for digital materials characterisation, porous media imaging and modelling, and multiphase flow studies related to future energy technologies.

Applications include digital rock physics, in situ recovery of minerals, geological storage of hydrogen, recovery of transition fuels, geological storage of CO₂, mineral liberation analyses, and machine learning in resources engineering.

Professional Affiliations

E-mail

ryan.armstrong@unsw.edu.au

Location

Tyree Energy and Technology Building (H6) Level 2, Room 243 Kensington Campus

Book Chapters | 2021

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 Driving Scientific and Engineering Discoveries Through the Convergence of HPC, Big Data and AI, Springer International Publishing, pp. 226 - 239, http://dx.doi.org/10.1007/978-3-030-63393-6_15
Journal articles | 2023

Baatar L; Mostaghimi P; Yuan M; Armstrong RT; Adler L; Canbulat I; Si G; Gaidarov B; Jing Y, 2023, 'Multiscale measurements of gas diffusion coefficient of coal using counter-diffusion and image-based methods', International Journal of Coal Geology, vol. 265, pp. 104155 - 104155, http://dx.doi.org/10.1016/j.coal.2022.104155

Journal articles | 2023

Herring AL; Sun C; Armstrong RT; Saadatfar M, 2023, 'Insights into wettability alteration during cyclic scCO2-brine injections in a layered Bentheimer sandstone', International Journal of Greenhouse Gas Control, vol. 122, http://dx.doi.org/10.1016/j.ijggc.2022.103803

Journal articles | 2023

Tang K; Wang YD; Niu Y; Honeyands TA; Dea DO; Mostaghimi P; Armstrong RT; Knackstedt M, 2023, 'Particle classification of iron ore sinter green bed mixtures by 3D X-ray microcomputed tomography and machine learning', Powder Technology, vol. 415, pp. 118151 - 118151, http://dx.doi.org/10.1016/j.powtec.2022.118151

Journal articles | 2023

Wang YD; Meyer Q; Tang K; McClure JE; White RT; Kelly ST; Crawford MM; Iacoviello F; Brett DJL; Shearing PR; Mostaghimi P; Zhao C; Armstrong RT, 2023, 'Large-scale physically accurate modelling of real proton exchange membrane fuel cell with deep learning', Nature Communications, vol. 14, pp. 745, http://dx.doi.org/10.1038/s41467-023-35973-8

Journal articles | 2023

Yuan M; Jing Y; Lanetc Z; Zhuravljov A; Soleimani F; Si G; Armstrong RT; Mostaghimi P, 2023, 'Modelling multicomponent gas diffusion and predicting the concentration-dependent effective diffusion coefficient of coal with application to carbon geo-sequestration', Fuel, vol. 339, pp. 127255 - 127255, http://dx.doi.org/10.1016/j.fuel.2022.127255

Journal articles | 2022

Alqahtani NJ; Niu Y; Wang YD; Chung T; Lanetc Z; Zhuravljov A; Armstrong RT; Mostaghimi P, 2022, 'Super-Resolved Segmentation of X-ray Images of Carbonate Rocks Using Deep Learning', Transport in Porous Media, vol. 143, pp. 497 - 525, http://dx.doi.org/10.1007/s11242-022-01781-9

Journal articles | 2022

Alzubaidi F; Makuluni P; Clark SR; Lie JE; Mostaghimi P; Armstrong RT, 2022, 'Automatic fracture detection and characterization from unwrapped drill-core images using mask R–CNN', Journal of Petroleum Science and Engineering, vol. 208, pp. 109471 - 109471, http://dx.doi.org/10.1016/j.petrol.2021.109471

Journal articles | 2022

Alzubaidi F; Mostaghimi P; Si G; Swietojanski P; Armstrong RT, 2022, 'Automated Rock Quality Designation Using Convolutional Neural Networks', Rock Mechanics and Rock Engineering, vol. 55, pp. 3719 - 3734, http://dx.doi.org/10.1007/s00603-022-02805-y

Journal articles | 2022

Ebadi M; Armstrong RT; Mostaghimi P; Wang YD; Alqahtani N; Amirian T; James LA; Parmar A; Zahra D; Hamze H; Koroteev D, 2022, 'Predictive Soft Computing Methods for Building Digital Rock Models Verified by Positron Emission Tomography Experiments', Water Resources Research, vol. 58, http://dx.doi.org/10.1029/2021WR031814

Journal articles | 2022

Higgs S; Da Wang Y; Sun C; Ennis-King J; Jackson SJ; Armstrong RT; Mostaghimi P, 2022, 'In-situ hydrogen wettability characterisation for underground hydrogen storage', International Journal of Hydrogen Energy, vol. 47, pp. 13062 - 13075, http://dx.doi.org/10.1016/j.ijhydene.2022.02.022

Journal articles | 2022

Jackson SJ; Niu Y; Manoorkar S; Mostaghimi P; Armstrong RT, 2022, 'Deep Learning of Multiresolution X-Ray Micro-Computed-Tomography Images for Multiscale Modeling', Physical Review Applied, vol. 17, http://dx.doi.org/10.1103/PhysRevApplied.17.054046

Journal articles | 2022

Jing Y; Rabbani A; Armstrong RT; Wang J; Zhang Y; Mostaghimi P, 2022, 'An image-based coal network model for simulating hydro-mechanical gas flow in coal: An application to carbon dioxide geo-sequestration', Journal of Cleaner Production, vol. 379, pp. 134647 - 134647, http://dx.doi.org/10.1016/j.jclepro.2022.134647

Journal articles | 2022

Lanetc Z; Zhuravljov A; Jing Y; Armstrong RT; Mostaghimi P, 2022, 'Coupling of pore network modelling and volume of fluid methods for multiphase flow in fractured media', Fuel, vol. 319, http://dx.doi.org/10.1016/j.fuel.2022.123563

Journal articles | 2022

McClure JE; Fan M; Berg S; Armstrong RT; Berg CF; Li Z; Ramstad T, 2022, 'Relative permeability as a stationary process: Energy fluctuations in immiscible displacement', Physics of Fluids, vol. 34, pp. 092011 - 092011, http://dx.doi.org/10.1063/5.0107149

Journal articles | 2022

Niu Y; Jackson SJ; Alqahtani N; Mostaghimi P; Armstrong RT, 2022, 'Paired and Unpaired Deep Learning Methods for Physically Accurate Super-Resolution Carbonate Rock Images', Transport in Porous Media, vol. 144, pp. 825 - 847, http://dx.doi.org/10.1007/s11242-022-01842-z

Journal articles | 2022

Rubaiya Muin S; Spicer PT; Tang K; Niu Y; Hosseini M; Mostaghimi P; Armstrong RT, 2022, 'Dynamic X-ray micotomography of microfibrous cellulose liquid foams using deep learning', Chemical Engineering Science, vol. 248, pp. 117173 - 117173, http://dx.doi.org/10.1016/j.ces.2021.117173

Journal articles | 2022

Sun C; McClure J; Berg S; Mostaghimi P; Armstrong RT, 2022, 'Universal description of wetting on multiscale surfaces using integral geometry', Journal of Colloid and Interface Science, vol. 608, pp. 2330 - 2338, http://dx.doi.org/10.1016/j.jcis.2021.10.152

Journal articles | 2022

Tang K; Da Wang Y; McClure J; Chen C; Mostaghimi P; Armstrong RT, 2022, 'Generalizable Framework of Unpaired Domain Transfer and Deep Learning for the Processing of Real-Time Synchrotron-Based X-Ray Microcomputed Tomography Images of Complex Structures', Physical Review Applied, vol. 17, http://dx.doi.org/10.1103/PhysRevApplied.17.034048

Journal articles | 2022

Tang K; Meyer Q; White R; Armstrong RT; Mostaghimi P; Da Wang Y; Liu S; Zhao C; Regenauer-Lieb K; Tung PKM, 2022, 'Deep learning for full-feature X-ray microcomputed tomography segmentation of proton electron membrane fuel cells', Computers and Chemical Engineering, vol. 161, pp. 107768 - 107768, http://dx.doi.org/10.1016/j.compchemeng.2022.107768

Journal articles | 2022

Tang K; Wang YD; Mostaghimi P; Knackstedt M; Hargrave C; Armstrong RT, 2022, 'Deep convolutional neural network for 3D mineral identification and liberation analysis', Minerals Engineering, vol. 183, pp. 107592 - 107592, http://dx.doi.org/10.1016/j.mineng.2022.107592

Journal articles | 2022

Yuan M; Jing Y; Armstrong RT; Mostaghimi P, 2022, 'Prediction of local diffusion coefficient based on images of fractured coal cores', Journal of Natural Gas Science and Engineering, vol. 100, pp. 104427 - 104427, http://dx.doi.org/10.1016/j.jngse.2022.104427

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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, vol. 140, pp. 215 - 240, http://dx.doi.org/10.1007/s11242-021-01615-0

Journal articles | 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

Journal articles | 2021

Herring AL; Sun C; Armstrong RT; Li Z; McClure JE; Saadatfar M, 2021, 'Evolution of Bentheimer Sandstone Wettability During Cyclic scCO2-Brine Injections', Water Resources Research, vol. 57, http://dx.doi.org/10.1029/2021WR030891

Journal articles | 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

Journal articles | 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

Journal articles | 2021

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

Journal articles | 2021

McClure JE; Berg S; Armstrong RT, 2021, 'Thermodynamics of fluctuations based on time-and-space averages', Physical Review E, vol. 104, http://dx.doi.org/10.1103/PhysRevE.104.035106

Journal articles | 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

Journal articles | 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

Journal articles | 2021

Rücker 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 2020

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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 2019

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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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', Exploration Geophysics, vol. 2019, pp. 1 - 3, http://dx.doi.org/10.1080/22020586.2019.12073166

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 2018

Armstrong RT, 2018, 'Multiphase flow in porous rock imaged under dynamic flow conditions with fast X-ray computed microtomography', Petrophysics, vol. 55

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 2018

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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 2017

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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 2016

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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 2015

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

Journal articles | 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

Journal articles | 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, https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000350266400003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=891bb5ab6ba270e68a29b250adbe88d1

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 2014

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

Journal articles | 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

Journal articles | 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

Journal articles | 2013

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

Journal articles | 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

Journal articles | 2012

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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 2011

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

Journal articles | 2011

Iltis GC; Armstrong RT; Jansik DP; Wood BD; Wildenschild D, 2011, 'Imaging biofilm architecture within', Imaging biofilm architecture within

Journal articles | 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

Journal articles | 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

Journal articles | 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

Journal articles | 2010

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

Journal articles | 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

Journal articles | 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

Journal articles | 2009

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

Journal articles | 2008

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

Journal articles | 2005

Cordes AA; Meloy J; Andersen E; Cleveland M; Barnhart C; Armstrong R, 2005, 'Removal of Ammonia from Semiconductor Wastewater', The 2005 Annual Meeting

Journal articles | 2003

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
Conference Papers | 2022

Alqahtani H; Alqahtani N; Armstrong RT; Mostaghimi P, 2022, 'Segmentation of X-Ray Images of Rocks Using Supervoxels Over-Segmentation', in Day 3 Wed, February 23, 2022, IPTC, presented at International Petroleum Technology Conference, 21 February 2022 - 23 February 2022, http://dx.doi.org/10.2523/iptc-22131-ms

Preprints | 2022

Alzubaidi F; Mostaghimi P; Niu Y; Armstrong RT; Mohammadi G; Berg S; McClure JE, 2022, Effective permeability of an immiscible fluid in porous media determined from its geometric state, http://arxiv.org/abs/2208.08027v1

Preprints | 2022

Herring AL; Sun C; Armstrong R; Saadatfar M, 2022, Insights into Wettability Alteration During Cyclic Scco2-Brine Injections in a Layered Bentheimer Sandstone, http://dx.doi.org/10.2139/ssrn.4166103

Conference Papers | 2022

Lanetc Z; Zhuravljov A; Shapoval A; Armstrong RT; Mostaghimi P, 2022, 'Inclusion of Microporosity in Numerical Simulation of Relative Permeability Curves', in Day 1 Mon, February 21, 2022, IPTC, presented at International Petroleum Technology Conference, 21 February 2022 - 23 February 2022, http://dx.doi.org/10.2523/iptc-21975-ms

Preprints | 2022

McClure JE; Fan M; Berg S; Armstrong RT; Berg CF; Li Z; Ramstad T, 2022, Relative permeability as a stationary process: energy fluctuations in immiscible displacement, http://dx.doi.org/10.1063/5.0107149

Preprints | 2022

Rabbani A; Sun C; Babaei M; Niasar VJ; Armstrong RT; Mostaghimi P, 2022, DeepAngle: Fast calculation of contact angles in tomography images using deep learning, http://dx.doi.org/10.48550/arxiv.2211.15243

Preprints | 2021

Higgs S; Da Wang Y; Sun C; Ennis-King J; Jackson S; Armstrong R; Mostaghimi P, 2021, In-situ hydrogen wettability characterisation for Underground Hydrogen Storage, http://dx.doi.org/10.31223/x54045

Preprints | 2021

Jackson SJ; Niu Y; Manoorkar S; Mostaghimi P; Armstrong RT, 2021, Deep learning of multi-resolution X-Ray micro-CT images for multi-scale modelling, http://dx.doi.org/10.48550/arxiv.2111.01270

Preprints | 2021

Niu Y; Jackson SJ; Alqahtani N; Mostaghimi P; Armstrong RT, 2021, A comparative study of paired versus unpaired deep learning methods for physically enhancing digital rock image resolution, http://dx.doi.org/10.48550/arxiv.2112.08644

Preprints | 2021

Sun C; McClure J; Berg S; Mostaghimi P; Armstrong RT, 2021, Universal description of wetting on multiscale surfaces using integral geometry, http://dx.doi.org/10.48550/arxiv.2108.09445

Preprints | 2020

Da Wang Y; Chung T; Armstrong RT; Mostaghimi P, 2020, ML-LBM: Machine Learning Aided Flow Simulation in Porous Media, http://dx.doi.org/10.48550/arxiv.2004.11675

Preprints | 2020

Da Wang Y; Shabaninejad M; Armstrong RT; Mostaghimi P, 2020, Physical Accuracy of Deep Neural Networks for 2D and 3D Multi-Mineral Segmentation of Rock micro-CT Images, http://dx.doi.org/10.48550/arxiv.2002.05322

Conference Papers | 2020

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

Preprints | 2020

Sun C; McClure JE; Mostaghimi P; Herring AL; Meisenheimer DE; Wildenschild D; Berg S; Armstrong RT, 2020, Characterization of wetting using topological principles, http://dx.doi.org/10.48550/arxiv.2005.02873

Conference Papers | 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

Conference Papers | 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

Preprints | 2019

Da Wang Y; Armstrong R; Mostaghimi P, 2019, Super Resolution Convolutional Neural Network Models for Enhancing Resolution of Rock Micro-CT Images, http://dx.doi.org/10.48550/arxiv.1904.07470

Preprints | 2019

Da Wang Y; Armstrong RT; Mostaghimi P, 2019, Boosting Resolution and Recovering Texture of micro-CT Images with Deep Learning, http://dx.doi.org/10.48550/arxiv.1907.07131

Conference Papers | 2019

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

Conference Papers | 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

Preprints | 2019

Sun C; McClure JE; Mostaghimi P; Herring AL; Shabaninejad M; Berg S; Armstrong RT, 2019, Linking continuum-scale state of wetting to pore-scale contact angles in porous media, http://dx.doi.org/10.48550/arxiv.1910.00484

Conference Papers | 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

Conference Papers | 2018

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

Preprints | 2018

McClure JE; Armstrong RT; Berrill MA; Schlüter S; Berg S; Gray WG; Miller CT, 2018, A geometric state function for two-fluid flow in porous media, http://dx.doi.org/10.48550/arxiv.1805.11032

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 2017

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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 2016

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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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, 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

Conference Papers | 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

Conference Papers | 2014

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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 2013

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

Conference Papers | 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

Conference Papers | 2012

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

Conference Papers | 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

Conference Papers | 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

Conference Papers | 2011

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

Conference Papers | 2010

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

Conference Papers | 2009

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

Conference Papers | 2003

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

Preprints |

Baatar L; Mostaghimi P; Yuan M; Armstrong R; Adler L; Canbulat I; Si G; Gaidarov B; Jing Y, Multiscale Gas Diffusion Measurements for Coal Characterization Using Bulk Counterdiffusion and Local 3d Imaging Methods, http://dx.doi.org/10.2139/ssrn.4105728

Preprints |

Lanetc Z; Zhuravljov A; Tang K; Armstrong R; Mostaghimi P, Multi-Scale Modelling of Multi-Physics Flow in Coal Seams, http://dx.doi.org/10.2139/ssrn.4253551

2022: ARC Future Fellowship, An Advanced Multiphase Model for Geometrical Evolution and Anomalous Flows, FT210100165.
2021: ARC Discovery, Beyond Darcy’s Law: Influence of Wettability on Multiphase Flow in Rocks, DP210102689, Lead CI.
2020: ACARP, Direct Measurements of Effective Diffusion Coefficient of Coal, C29036.
2019: ARC Linkage, In-situ Characterisation of Coal from Coal Seam Gas Developments, LP190100990.
2017: ARC Discovery, Unlock Challenges of Coal Seam Gas: Experimental & Theoretical Developments, DP170104417, Lead CI.
2016: ARC Discovery, Core-scale Geodynamic Rock-typing of Reservoir Rock, DP160104995.

2022: Australian Research Council Future Fellowship
2019: Second Best Paper Award, Society of Core Analysts Symposium
- Shaw, D., Mostaghimi, P., Hussain, F., and R. T. Armstrong (2019), Insights, trends and challenges associated with measuring coal relative permeability, International Symposium of the Society of Core Analyst, Trondheim, Norway, 27-31 August.
2018: Arc Postgraduate Research Supervisor Award
2016: Best Paper Award, Society of Core Analysts Symposium
- Armstrong, R. T., McClure, J. E., Berill, M. A., Rücker, M., Schlüter, S., and S. Berg (2016), Flow Regimes During Immiscible Displacement, International Symposium of the Society of Core Analyst, Snowmass, Colorado, USA, 21-26 August. SCA2016-009.
2016: UNSW Staff Excellence Award in Research
2016: UNSW Staff Excellence Award in Teaching
2015: Best Paper Award, Society of Core Analysts Symposium
- Rücker, M., Berg, S., Armstrong, R. T., Georgiadis, A., Ott, H., Simon, L., Enzmann, F., Kersten, M., and S. de With (2015), The fat of oil clusters during fractional flow – Trajectories in the saturation-capillary number space, International Symposium of the Society of Core Analysts, Newfoundland, Canada, 16-21 August.
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.

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