Select Publications

Journal articles

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, 47

Wildenschild D; Armstrong RT, 2011, 'The effects of fractional wettability on microbial enhanced oil recovery', AGU Fall Meeting Abstracts, 1, pp. 1244 - 1244

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, 1, pp. 1110 - 1110

Armstrong RT; Wildenschild D, 2010, 'Designer-wet micromodels for studying potential changes in wettability during microbial enhanced oil recovery', AGU Fall Meeting Abstracts, 1, pp. 1061 - 1061

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, 1, pp. 08 - 08

Armstrong RT; Ajo Franklin JB, 2009, 'Probing the Dynamics of Biomineralization at the Pore Scale Using X-ray Computed Tomography', AGU Fall Meeting Abstracts, 1, pp. 0976 - 0976

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, 1, pp. 03 - 03

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

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, 103, pp. 373 - 389

Conference Papers

Lanetc Z; Zhuravljov A; Shapoval A; Armstrong RT; Mostaghimi P, 2022, 'Inclusion of Microporosity in Numerical Simulation of Relative Permeability Curves', in International Petroleum Technology Conference, IPTC 2022, http://dx.doi.org/10.2523/IPTC-21975-MS

Alqahtani H; Alqahtani N; Armstrong RT; Mostaghimi P, 2022, 'Segmentation of X-Ray Images of Rocks Using Supervoxels Over-Segmentation', in International Petroleum Technology Conference, IPTC 2022, http://dx.doi.org/10.2523/IPTC-22131-MS

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

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

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

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

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

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

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

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

Mostaghimi P; Singh A, 2018, 'Automatic Fracture Identification using X-ray Images', Australia, presented at Australian Society of Exploration Geophysicists, Australia, 18 February 2018 - 21 February 2018, http://dx.doi.org/10.1071/ASEG2018abT6_2C

Armstrong RT, 2017, 'Determination of Local Diffusion Coefficients and Directional Anisotropy in Shale From Dynamic Micro-CT Imaging', Austin, Texas, presented at Unconventional Resources Technology Conference (URTEC, Austin, Texas, 17 July 2017 - 21 July 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

Armstrong RT, 2017, 'Alkaline Surfactant Polymer Flooding: What Happens at the Pore Scale?', Paris France, presented at SPE Europec featured at 79th EAGE Conference and Exhibition, Paris France, 04 June 2017 - 08 June 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

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

Mostaghimi P, 2016, 'Flow in Coal Seams: An Unconventional Challenge', San Fracisco, presented at AGU Fall Meeting, San Fracisco, 12 December 2016 - 16 December 2016

Mostaghimi P, 2016, 'Pore Topology Method: Experimental Validation and Dynamic Features', San Francisco, presented at AGU Fall Meeting, San Francisco, 12 December 2016 - 16 December 2016

Wildenschild ; Harper ; Armstrong RT, 2016, 'The Effect of Original and Initial Saturation on Residual Nonwetting Phase Capillary Trapping Efficiency', San Francisco, presented at AGU Fall Meeting, San Francisco, 12 December 2016 - 16 December 2016

MCClure ; Armstrong RT; Berg ; Gray , 2016, 'The effect of topology on two-fluid flow in porous media', SanFrancisco, presented at AGU Fall Meeting Abstracts, SanFrancisco, 12 December 2016 - 16 December 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, Society of Petroleum Engineers (SPE), Abu Dhabi, presented at Zhang, Abu Dhabi, 07 November 2016 - 10 November 2016, http://dx.doi.org/10.2118/183411-MS

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

Armstrong RT, 2016, 'Combining high-resolution with larger volume images for improved characterization of mudstone reservoirs', Austin Texas, presented at SPWLA 57th Annual Logging Symposium, Austin Texas, 25 June 2016 - 29 June 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

Armstrong RT, 2015, 'A Combined Micro-CT Imaging/Microfluidic Approach for Understating Methane Recovery in Coal Seam Gas Reservoirs', SanFrancisco, presented at AGU Fall Meeting Abstracts, SanFrancisco, 14 December 2015 - 18 December 2015

Armstrong RT, 2015, 'Using Microfluidics for Visualisation of Displacement Mechanisms on Pore Network Models', SanFrancisco, presented at AGU Fall Meeting, SanFrancisco, 14 December 2015 - 18 December 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

Ramandi HL; Armstrong RT; Mostaghimi P; Saadatfar M; Pinczewsk WV; Lamei Ramandi H, 2015, 'X-ray micro-computed tomography imaging for coal characterization', in Society of Petroleum Engineers - SPE Asia Pacific Unconventional Resources Conference and Exhibition, SPE, presented at SPE Asia Pacific Unconventional Resources Conference and Exhibition, 09 November 2015 - 11 November 2015, http://dx.doi.org/10.2118/177017-ms

Armstrong RT, 2015, 'Microfluidic experiments for understanding transport phenomena in coal seam reservoirs', Newfoundland, Canada, presented at Society of Core Analysts, Newfoundland, Canada, 16 August 2015 - 21 August 2015

Armstrong RT, 2015, 'The fate of oil clusters during fractional flow: Trajectories in the saturation-capillary number space', St. Johns Newfoundland, presented at Society of Core Analyst, St. Johns Newfoundland, 16 August 2015 - 21 August 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

Armstrong RT, 2015, 'Pore-Scale imaging and modeling of coal properties', Melbourne, Australia, presented at APPEA, Melbourne, Australia, 17 May 2015 - 20 May 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, Society of Petroleum Engineers (SPE), presented at Unconventional Resources Technology Conference, http://dx.doi.org/10.2118/178617-ms

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

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

Armstrong RT, 2014, 'Interfacial velocities and the resulting velocity field during a Haines jump', Avignon France, presented at Society of Core Analysts, Avignon France, 08 September 2014 - 11 September 2014

Armstrong RT, 2014, 'ONSET OF OIL MOBILIZATION AND NON - WETTING PHASE CLUSTER SIZE DISTRIBUTION', Avignon France, presented at Society of Core Analysts, Avignon France, 08 September 2014 - 11 September 2014

Armstrong RT, 2013, 'DIRECT HYDRODYNAMIC SIMULATION OF MULTIPHASE FLOW IN POROUS ROCK', Napp Valley California, presented at Society of Core Analysts, Napp Valley California, 16 September 2013 - 19 September 2013

Armstrong RT, 2013, 'Multiphase flow in porous rock imaged under dynamic flow conditions with fast X-ray computed tomography', Napa Valley, California, presented at Society of Core Analysts, Napa Valley, California, 16 September 2013 - 19 September 2013

Armstrong RT, 2013, 'Application of digital rock technology for chemical EOR screening', Kuala Lumpur, Malaysia, presented at SPE enhanced oil recovery conference, Kuala Lumpur, Malaysia, 02 July 2013 - 04 July 2013

Armstrong RT, 2012, 'A Pore Scale Explanation for Displacement Efficiency', SanFrancisco, presented at AGU Fall Meeting, SanFrancisco, 10 December 2012 - 14 December 2012


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