Prof Adrian Sheppard

Position	Professor
Department	Physics Education Centre Materials Physics
Research group	X-ray tomography and applications group
Office phone	(02) 612 58516
Email
Office	Cockcroft 4 62

Publications

Book chapter

Prodanovic M, Mehmani A, Sheppard A
Image-based multiscale network modelling of microporosity in carbonates
Fundamental Controls on Fluid Flow in Carbonates: Current Workflows to Emerging Technologies
Geological Society of London, London (2015) 95-113

Kumar M, Lebedeva E, Madadi M, Sheppard A, Varslot T, Kingston A, Latham S, Sok R, Sakellariou A, Arns C, Senden T, Knackstedt M, Melean Y
Micro-petrophysical Experiments via Tomography and Simulation: Micro-Petrophysical experiments
Advances in Computed Tomography for Geomaterials: GeoX 2010
John Wiley & Sons Inc., USA (2010) 333-349

Saadatfar M, Sheppard A, Knackstedt M
Grain partitioning and its applications
Advances in X-ray tomography for geomaterials
ISTE Publishing Knowledge, London (2006) 269-276

(3 publications)

Journal article

Steklova K, Fielding A, Beeching L, Sheppard A, Kingston A
Analysis of the off-focal source in transmission geometry X-ray systems
Nuclear Instruments and Methods in Physics Research: Section A 1061(2024) 169078

Beckett H, Webb D, Turner M, Sheppard A, Ball M
Bark water uptake through lenticels increases stem hydration and contributes to stem swelling
Plant Cell and Environment 47, 1(2023) 72-90

Huang R, Herring A, Sheppard A
Investigation of supercritical CO2 mass transfer in porous media using X-ray micro-computed tomography
Advances in Water Resources 171, 104338(2023)

Fuenzalida Gasman T, Blacker M, Turner M, Sheppard A, Ball M
Foliar water uptake enables embolism removal in excised twigs of Avicennia marina
New Phytologist 237, 4(2022) 1136-1145

Yang C, Fullagar W, Paziresh M, Myers G, Latham S, Sheppard A, Kingston A
Spectral information from photon statistics in x-ray radiography and computed tomography
Physical Review A 106(2022) 1-18

Huang R, Herring A, Sheppard A
Effect of Saturation and Image Resolution on Representative Elementary Volume and Topological Quantification: An Experimental Study on Bentheimer Sandstone Using Micro-CT
Transport in Porous Media 137(2021) 489Ã?Â¢Ã¢?Â¬Ã¢??518

Delgado-Friedrichs O, Kingston A, Latham S, Myers G, Sheppard A
PI-Line Difference for Alignment and Motion-Correction of Cone-Beam Helical-Trajectory Micro-Tomography Data
IEEE Transactions on Computational Imaging 6(2020) 24-33

Hasnan H, Sheppard A, Hassan M, Abdullah W
Digital core analysis: Characterizing reservoir quality through thin sandstone layers in heterolithic rocks
Journal of Applied Geophysics 182, 104178(2020) 1-23

Hasnan H, Sheppard A, Hassan M, Knackstedt M, Abdullah W
Digital core analysis: Improved connectivity and permeability characterization of thin sandstone layers in heterolithic rocks
Marine and Petroleum Geology 120, 104549(2020) 1-22

Kingston A, Yang C, Grewar M, Delgado-Friedrichs O, Myers G, Latham S, Sheppard A
Techniques for high-fidelity X-ray micro-tomography of additively manufactured metal components
Nondestructive Testing and Evaluation 35, 3(2020) 241-251

Li Z, McClure J, Middleton J, Varslot T, Sheppard A
Discretization limits of lattice-Boltzmann methods for studying immiscible two-phase flow in porous media
International Journal for Numerical Methods in Fluids 92(2020) 1162-1197

McClure J, Li Z, Sheppard A, Miller C
An adaptive volumetric flux boundary condition for lattice Boltzmann methods
Computers and Fluids 210(2020) 1-8

Yang C, Fullagar W, Myers G, Latham S, Varslot T, Sheppard A, Kingston A
X-ray attenuation models to account for beam hardening in computed tomography
Applied Optics 59, 29(2020) 9126-9136

Herring A, Robins V, Sheppard A
Topological Persistence for Relating Microstructure and Capillary Fluid Trapping in Sandstones
Water Resources Research 55, 1(2019) 555-573

Herring A, Gilby F, Li Z, McClure J, Turner M, Veldkamp J, Beeching L, Sheppard A
Observations of nonwetting phase snap-off during drainage
Advances in Water Resources 121(2018) 32-43

Kingston A, Myers G, Latham S, Recur B, Li H, Sheppard A
Space-Filling X-Ray Source Trajectories for Efficient Scanning in Large-Angle Cone-Beam Computed Tomography
IEEE Transactions on Computational Imaging 4, 3(2018) 447-458

Latham S, Kingston A, Recur B, Myers G, Delgado-Friedrichs O, Sheppard A
Reprojection Alignment for Trajectory Perturbation Estimation in Microtomography
IEEE Transactions on Computational Imaging 4, 2(2018) 271-283

Li H, Kingston A, Myers G, Beeching L, Sheppard A
Linear iterative near-field phase retrieval (LIPR) for dual-energy x-ray imaging and material discrimination
Journal of the Optical Society of America A 35, 1(2018) 30-39

Zhang Y, Mostaghimi P, Fogden A, Sheppard A, Arena A, Middleton J, Armstrong R
Time-Lapsed Visualization and Characterization of Shale Diffusion Properties Using 4D X-ray Microcomputed Tomography
Energy and Fuels 32, 3(2018) 2889-2900

Herring A, Middleton J, Walsh R, Kingston A, Sheppard A
Flow rate impacts on capillary pressure and interface curvature of connected and disconnected fluid phases during multiphase flow in sandstone
Advances in Water Resources 107(2017) 460-469

Zhang Y, Mostaghimi P, Fogden A, Middleton J, Sheppard A, Armstrong R
Local diffusion coefficient measurements in shale using dynamic micro-computed tomography
Fuel 207, 1(2017) 312-322

Zhang Y, Mostaghimi P, Fogden A, Middleton J, Sheppard A, Armstrong R
Local diffusion coefficient measurements in shale using dynamic micro-computed tomography
Fuel 207(2017) 312-322

Botha P, Sheppard A
Mapping permeability in low-resolution micro-CT images: A multiscale statistical approach
Water Resources Research 52, 6(2016) 4377-4398

Herring A, Sheppard A, Andersson L, Wildenschild D
Impact of wettability alteration on 3D nonwetting phase trapping and transport
International Journal of Greenhouse Gas Control 46(2016) 175-186

Robins V, Saadatfar M, Delgado-Friedrichs O, Sheppard A
Percolating length scales from topological persistence analysis of micro-CT images of porous materials
Water Resources Research 52, 1(2016) 315-329

Delgado-Friedrichs O, Robins V, Sheppard A
Skeletonization and Partitioning of Digital Images Using Discrete Morse Theory
IEEE Transactions on Pattern Analysis and Machine Intelligence 37, 3(2015) 654-666

Herring A, Andersson L, Schlüter S, Sheppard A, Wildenschild D
Efficiently engineering pore-scale processes: The role of force dominance and topology during nonwetting phase trapping in porous media
Advances in Water Resources 79(2015) 91-102

Li H, Kingston A, Myers G, Recur B, Sheppard A
3D X-Ray Source Deblurring in High Cone-Angle Micro-CT
IEEE Transactions on Nuclear Science 62, 5(2015) 2075-2084

Myers G, Geleta M, Kingston A, Recur B, Sheppard A
Bayesian approach to time-resolved tomography
Optics Express 23, 15(2015) 20062-20074

Palamara D, Neeman T, Golab A, Sheppard A
A statistical analysis of the effects of pressure, temperature and salinity on contact angles in CO2–brine–quartz systems
International Journal of Greenhouse Gas Control 42(2015) 516-524

Brown K, Schlueter S, Sheppard A, Wildenschild D
On the Challenges of Measuring Interfacial Characteristics of Three-Phase Fluid Flow with X-Ray Microtomography
Journal of Microscopy 253, 3(2014) 171-182

Parvanian A, Saadatfar M, Panjepour M, Kingston A, Sheppard A
The effects of manufacturing parameters on geometrical and mechanical properties of copper foams produced by space holder technique
Materials and Design 53, January 2014(2014) 681-690

Schlueter S, Sheppard A, Brown K, Wildenschild D
Image processing of multiphase images obtained via X- ray microtomography: A review
Water Resources Research 50, 4(2014) 3615-3639

Sheppard A, Latham S, Middleton J, Kingston A, Myers G, Varslot T, Fogden A, Sawkins T, Cruikshank R, Saadatfar M, Francois N, Arns C, Senden T
Techniques in helical scanning, dynamic imaging and image segmentation for improved quantitative analysis with X-ray micro-CT
Nuclear Instruments and Methods in Physics Research: Section B 324(2014) 49-56

Derluyn H, Griffa M, Mannes D, Jerjen I, Dewanckele J, Vontobel P, Sheppard A, Derome D, Cnudde V, Lehmann E, Carmeliet J
Characterizing saline uptake and salt distributions in porous limestone with neutron radiography and X-ray micro-tomography
Journal of Building Physics 36, 4(2013) 353-374

Francois N, Saadatfar M, Cruikshank R, Sheppard A
Geometrical Frustration in Amorphous and Partially Crystallized Packings of Spheres
Physical Review Letters 111, 14(2013) 148001-05

Francois N, Saadatfar M, Hanifpour M, Cruikshank R, Sheppard A
Crystallisation in a granular material
AIP Conference Proceedings 1542(2013) 369-372

Herring A, Harper E, Andersson L, Sheppard A, Bay B, Wildenscheid D
Effect of fluid topology on residual nonwetting phase trapping: Implications for geologic CO₂ sequestration
Advances in Water Resources 62(2013) 47-58

Herring A, Harper E, Andersson L, Sheppard A, Bay B, Wildenschild D
Effect of fluid topology on residual nonwetting phase trapping: Implications for geologic CO₂ sequestration
Advances in Water Resources 62(2013) 47-58

Saadatfar M, Francois N, Arad A, Madadi M, Sheppard A, Senden T, Knackstedt M
Grain-based characterisation and acoustic wave propagation in a sand packing subject to triaxial compression
AIP Conference Proceedings 1542, 571(2013) 571-574

Wildenschild D, Sheppard A
X-ray imaging and analysis techniques for quantifying pore-scale structure and processes in subsurface porous medium systems
Advances in Water Resources 51(2013) 217-246

Myers G, Varslot T, Kingston A, Herring A, Sheppard A
Ground-truth verification of dynamic x-ray micro-tomography images of fluid displacement
Proceedings of SPIE - International Society for Optical Engineering 8506(2012) 85060P

Saadatfar M, Mukherjee M, Madadi M, Schroder-Turk G, Garcia-Moreno F, Schaller F, Hutzler S, Sheppard A, Banhart J, Ramamurty U
Structure and deformation correlation of closed-cell aluminium foam subject to uniaxial compression (vol 60, pg 3604, 2012)
Acta Materialia 60, 16(2012) 5944-5944

Saadatfar M, Sheppard A, Senden T, Kabla A
Mapping forces in a 3D elastic assembly of grains
Journal of the Mechanics and Physics of Solids 60, 1(2012) 55-66

Kingston A, Sakellariou A, Varslot T, Myers G, Sheppard A
Reliable automatic alignment of tomographic projection data by passive auto-focus
Medical Physics 38, 9(2011) 4934-4945

Kumar M, Senden T, Sheppard A, Arns C, Knackstedt M
Probing the archie's exponent under variable saturation conditions
Petrophysics 52, 2(2011) 124-134

Myers G, Kingston A, Varslot T, Sheppard A
Extending reference scan drift correction to high-magnification high-cone-angle tomography
Optics Letters 36, 24(2011) 4809-4811

Myers G, Kingston A, Varslot T, Turner M, Sheppard A
Dynamic tomography with a priori information
Applied Optics 50, 20(2011) 3685-3690

Robins V, Wood P, Sheppard A
Theory and Algorithms for Constructing Discrete Morse Complexes from Grayscale Digital Images
IEEE Transactions on Pattern Analysis and Machine Intelligence 33 , 8(2011) 1646-1658

Singh K, Niven R, Senden T, Turner M, Sheppard A, Middleton J, Knackstedt M
Remobilization of Residual Non-Aqueous Phase Liquid in Porous Media by Freeze-Thaw Cycles
Environmental Science and Technology 45, 8(2011) 3473-3478

Varslot T, Kingston A, Myers G, Sheppard A
High-resolution helical cone-beam micro-CT with theoretically-exact reconstruction from experimental data
Medical Physics 38, 10(2011) 5459-5476

Kingston A, Sakellariou A, Sheppard A, Varslot T, Latham S
An auto-focus method for generating sharp 3D tomographic images
Proceedings of SPIE - Progress in Biomedical Optics and Imaging 7804(2010) Article number 78040J

Kumar M, Senden T, Sheppard A, Middleton J, Knackstedt M
Visualizing and quantifying the residual phase distribution in core material
Petrophysics 51, 5(2010) 323-332

Kumar M, Sok R, Knackstedt M, Latham S, Senden T, Sheppard A, Varslot T, Arns C
Mapping 3D Pore Scale Fluid Distributions: How Rock Resistivity is Influenced by Wettability and Saturation History
Petrophysics 51, 2(2010) 102-117

Olafuyi A, Sheppard A, Arns C, Sok R, Cinar Y, Knackstedt M, Pinczewski W
Experimental Verification of Effect of Size on Drainage Capillary Pressure Computed from Digitized Tomographic Images
International Journal of Engineering Research in Africa 1(2010) 1-10

Sakellariou A, Kingston A, Varslot T, Sheppard A, Latham S, Sok R, Arns C, Senden T, Knackstedt M
Tomographic image analysis and processing to simulate micro-petrophysical experiments
Proceedings of SPIE - Progress in Biomedical Optics and Imaging 7804(2010) 9

Sok R, Varslot T, Ghous A, Latham S, Sheppard A, Knackstedt M
Pore scale characterization of carbonates at multiple scales: integration of micro-CT BSEM and FIBSEM
Petrophysics 51, 6(2010) 379-387

Varslot T, Kingston A, Sheppard A, Sakellariou A
Fast high-resolution micro-CT with exact reconstruction methods
Proceedings of SPIE - Progress in Biomedical Optics and Imaging 7804(2010) Article number 780413

Caubit C, Hamon G, Sheppard A, Oren P
Evaluation Of The Reliability of Prediction of Petrophysical Data Through Imagery and Pore Network Modelling
Petrophysics 50, 4(2009) 322-334

Jones A, Arns C, Hutmacher D, Milthorpe B, Sheppard A, Knackstedt M
The correlation of pore morphology, interconnectivity and physical properties of 3D ceramic scaffolds with bone ingrowth
Biomaterials 30, 7(2009) 1440-1451

Kumar M, Senden T, Knackstedt M, Latham S, Pinczewski W, Sok R, Sheppard A, Turner M
Imaging of Pore Scale Distribution of fluids and Wettability
Petrophysics 50, 4(2009) 311-321

Saadatfar M, Garcia-Moreno F, Hutzler S, Sheppard A, Knackstedt M, Banhart J, Weaire D
Imaging of metallic foams using X-ray micro-CT
Colloids and Surfaces A: Physicochemical and Engineering Aspects 344(2009) 107-112

Saadatfar M, Garcia-Moreno F, Hutzler S, Sheppard A, Knackstedt M, Banhar J, Weaire D
Imaging of metallic foams using X-ray micro-CT
Colloids and Surfaces A: Physicochemical and Engineering Aspects 344(2009) 107-112

Mickel W, Muenster S, Jawerth L, Vader D, Weitz D, Sheppard A, Mecke K, Fabry B, Schroeder-Turk G
Robust Pore Size Analysis of Filamentous Networks from Three-Dimensional Confocal Microscopy
Biophysical Journal 95, 12(2008) 6072-6080

Scheel M, Seemann R, Brinkmann M, Di Michiel M, Sheppard A, Breidenbach B, Herminghaus S
Morphological clues to wet granular pile stability
Nature Materials 7, 3(2008) 189-193

Scheel M, Seemann R, Brinkmann M, Di Michiel M, Sheppard A, Herminghaus S
Liquid distribution and cohesion in wet granular assemblies beyond the capillary bridge regime
Journal of Physics: Condensed Matter 20(2008) 494236

Jones A, Arns C, Sheppard A, Hutmacher D, Milthorpe B, Knackstedt M
Assessment of bone ingrowth into porous biomaterials using MICRO-CT
Biomaterials 28(2007) 2491-2504

Mahmud W, Arns J, Sheppard A, Knackstedt M, Pinczewski W
Effect of network topology on two-phase imbibition relative permeability
Transport in Porous Media 66, 3(2007) 481-493

Sakellariou A, Arns C, Sheppard A, Sok R, Averdunk H, Limaye A, Jones A, Senden T, Knackstedt M
Developing a virtual materials laboratory
Materials Today 10, 12(2007) 44-51

Goel A, Arns C, Holmstad R, Gregersen O, Bauget F, Averdunk H, Sok R, Sheppard A, Knackstedt M
Analysis of the impact of papermaking variables on the structure and transport properties of paper samples by X-ray microtomography
Journal of Pulp and Paper Science 32, 3(2006) 1-12

Knackstedt M, Arns C, Saadatfar M, Senden T, Limaye A, Sakellariou A, Sheppard A, Sok R, Schrof W, Steininger H
Elastic and transport properties of cellular solids derived from three-dimensional tomographic images
Proceedings of the Royal Society of London Series A: Mathematical, Physical and Engineering Sciences 462, 2073(2006) 2833-2862

Nguyen V, Sheppard A, Knackstedt M, Pinczewski W
The effect of displacement rate on imbibition relative permeability and residual saturation
Journal of Petroleum Science and Engineering 52(2006) 54-70

Sheppard A, Arns C, Sakellariou A, Senden T, Sok R, Averdunk H, Saadatfar M, Limaye A, Knackstedt M
Quantitative properties of complex porous materials calculated from X-ray CT images
Proceedings of SPIE - Progress in Biomedical Optics and Imaging 7, 38(2006) 631811/1-15

Arns C, Bauget F, Limaye A, Sakellariou A, Senden T, Sheppard A, Sok R, Pinczewski W, Bakke S, Berge L, Oren P, Knackstedt M
Pore-Scale Characterization of Carbonates Using X-Ray Microtomography
SPE Journal December 2005(2005) 475-484

Ghous A, Pinczewski W, Knackstedt M, Arns C, Bauget F, Sakellariou A, Senden T, Sheppard A, Sok R, Kelly J
Digital Core Laboratory: Petrophysical Analysis from 3D Imaging of Reservoir Core Fragments
Petrophysics 46, 4(2005) 18

Knackstedt M, Arns C, Saadatfar M, Senden T, Sakellariou A, Sheppard A, Sok R, Schrof W, Steininger H
Virtual Materials Design: Properties of Cellular Solids Derived from 3D Tomographic Images
Advanced Engineering Materials 7, 4(2005) 238-243

Sheppard A, Arns J, Knackstedt M, Pinczewski W
Volume Conservation of the Intermediate Phase in Three-Phase Pore-Network Models
Transport in Porous Media 59(2005) 155-173

Arns J, Robins V, Sheppard A, Sok R, Pinczewski W, Knackstedt M
Effect of Network Topology on Relative Permeability
Transport in Porous Media 55(2004) 21-46

Jones A, Milthorpe B, Averdunk H, Limaye A, Senden T, Sakellariou A, Sheppard A, Sok R, Knackstedt M, Brandwood A, Rohner D, Hutmacher D
Analysis of 3D Bone Ingrowth into Polymer Scaffolds via Micro-computed Tomography Imaging
Biomaterials 25(2004) 4947-4954

Jones A, Sheppard A, Sok R, Arns C, Limaye A, Averdunk H, Brandwood A, Sakellariou A, Senden T, Milthorpe B, Knackstedt M
Three-dimensional Analysis of Cortical Bone Structure using X-ray Micro-computed Tomography
Physica A: Statistical mechanics and its applications 339(2004) 125-130

Saadatfar M, Knackstedt M, Arns C, Sakellariou A, Senden T, Sheppard A, Sok R, Steininger H, Schrof W
Polymeric Foam Properties Derived from 3D Images
Physica A: Statistical mechanics and its applications 339(2004) 131-136

Sheppard A, Sok R, Averdunk H
Techniques for image enhancement and segmentation of tomographic images of porus materials
Physica A: Statistical mechanics and its applications 339(2004) 145-151

Turner M, Knuefing L, Arns C, Sakellariou A, Senden T, Sheppard A, Sok R, Limaye A, Pinczewski W, Knackstedt M
Three-dimensional Imaging of Multiphase Flow in Porous Media
Physica A: Statistical mechanics and its applications 339(2004) 166-172

Arns C, Sakellariou A, Senden T, Sheppard A, Sok R, Pinczewski W, Knackstedt M
Petrophysical Properties Derived from X-ray CT Images
APPEA Journal 43(2003) 577-586

Arns J, Arns C, Sheppard A, Sok R, Knackstedt M, Pinczewski W
Relative Permeability from Tomographic Images: Effect of Correlated Heterogeneity
Journal of Petroleum Science and Engineering 39(2003) 247-259

Knackstedt M, Sahimi M, Sheppard A
Nonuniversality of Invasion of Percolation in Two-dimensional Systems
Physical Review E 65(2002) 035101-1-4

Paterson L, Sheppard A, Knackstedt M
Trapping Thresholds in Invasion Percolation
Physical Review E 66(2002) 156122-1-6

Sok R, Knackstedt M, Sheppard A, Pinczewski W, Paterson L
Direct and Stochastic Generation of Network Models from Tomographic Images: Effect of Topology on Residual Saturations
Transport in Porous Media 46(2002) 345-372

Knackstedt M, Marrink S, Sheppard A, Pinczewski W, Sahimi M
Invasion Percolation on Correlated and Elongated Lattices: Implications for the Interpretation of Residual Saturations in Rock Cores
Transport in Porous Media 44(2001) 465-485

Knackstedt M, Sheppard A, Sahimi M
Pore network modelling of two-phase flow in porous rock: the effect of correlated Heterogeneity
Advances in Water Resources 24(2001) 257-277

Knackstedt M, Sahimi M, Sheppard A
Invasion Percolation with Long-Range Correlations: First Order Phase Transitions and Nonuniversal Scaling Properties
Physical Review E 61(2000) 4920-4934

Sheppard A, Knackstedt M, Pinczewski W, Sahimi M
Invasion Percolation: New Algorithms and Universality Classes
Journal of Physics A: Mathematical and General 32(1999) L521-529

Knackstedt M, Sheppard A
Simulation of mercury porosimetry on correlated grids: Evidence for extended correlated heterogeneity at the pore scale in rocks
Physical Review E 58, 6 SUPPL. A(1998) R6923-R6926

Sheppard A
Nonparaxiality stabilizes three-dimensional soliton beams in Kerr media
Optics Letters 23, 23(1998) 1820-1822

(97 publications)

Conference paper

Yang C, Chakraborty N, Lakshtanov D, Sheppard A, Kingston A
Density Estimation in X-ray Computed Tomography using the Alvarez-Macovski Model
"Developments in X-Ray Tomography XIII " ?, ?(2021)

Arns C, Sheppard A, Saadatfar M, Knackstedt M
Prediction of permeability from NMR response: Surface relaxivity heterogeneity
SPWLA 47th Annual Logging Symposium 2006 ?, ?(2018)

Herring A, Wildenschild D, Andersson L, Robins V, Sheppard A
The impact of cyclic injection cycles on capillary trapping: comparison of ambient and reservoir condition experiments
14th International Conference on Greenhouse Gas Control Technologies, GHGT-14 ?, ?(2018)

Knackstedt M, Arns C, Ghous A, Sakellariou A, Senden T, Sheppard A, Sok R, Nguyen V, Pinczewski W
3D imaging and characterization of the pore space of carbonate core; implications to single and two phase flow properties
SPWLA 47th Annual Logging Symposium 2006 ?, ?(2018) 1-15

Kingston A, Myers G, Latham S, Li H, Veldkamp J, Sheppard A
Optimised x-ray source scanning trajectories for iterative reconstruction in high cone-angle tomography
Developments in X-Ray Tomography X ?, ?(2016)

Myers G, Kingston A, Latham S, Recur B, Li H, Turner M, Beeching L, Sheppard A
Rapidly-converging multigrid reconstruction of cone-beam tomographic data
Developments in X-Ray Tomography X ?, ?(2016) 1-7

Myers G, Latham S, Kingston A, Kolomazník J, Krají?ek V, Krupka T, Varlot T, Sheppard A
High cone-angle x-ray computed micro-tomography with 186 Giga Voxel datasets
Developments in X-Ray Tomography X ?, ?(2016) 7

Delgado-Friedrichs O, Robins V, Sheppard A
Morse Theory and Persisten Homology for Toplogical Analysis of 3D Images of Complex Materials
IEEE International Conference on Image Processing ICIP 2014 ?, ?(2014) 4872-4876

Fogden A, Middleton J, McKay T, Latham S, Marathe R, Turner M, Sheppard A, Howard J, Lane D
3D Mapping of Pore and Organic Matter Distributions in Unconventional Reservoirs Utilizing a Digital Rocks Appproach
International Symposium of the Society of Core Analysts ?, ?(2014) SCA2014-027-1-12

Holt J, Paziresh M, Kingston A, Sheppard A
Correction of beam hardening artefacts in microtomography for samples imaged in containers
Developments in X-Ray Tomography IX ?, ?(2014) 1-12

Li H, Kingston A, Myers G, Recur B, Turner M, Sheppard A
Improving spatial-resolution in high cone-angle micro-CT by source deblurring
Developments in X-Ray Tomography IX ?, ?(2014) 1-11

Myers G, Geleta M, Kingston A, Recur B, Sheppard A
Improving dynamic tomography, through maximum a posteriori estimation
Developments in X-Ray Tomography IX ?, ?(2014) 921211/1-9

Recur B, Fauconneau Dufresne M, Kingston A, Myers G, Sheppard A
Iterative reconstruction optimisations for high angle cone-beam micro-CT
Developments in X-Ray Tomography IX ?, ?(2014) 921214/1-12

Recur B, Paziresh M, Myers G, Kingston A, Latham S, Sheppard A
Dual-energy iterative reconstruction for material characterisation
Developments in X-Ray Tomography IX ?, ?(2014) 1-9

Kingston A, Maniotis A, Varslot T, Myers G, Sheppard A, Trumpf J, Hartley R
Geometric Alignment of Helical Tomographic Projection Data Using Pi-Lines
International Conference on Tomography of Materials and Structures (ICTMS 2013) ?, ?(2013) 101-104

Kingston A, Shadwell M, Myers G, Varslot T, Sheppard A
Practical Region-Of-Interest Tomography
International Conference on Tomography of Materials and Structures (ICTMS 2013) ?, ?(2013) 125-128

Middleton J, Latham S, Sheppard A
Performance Comparison of Segmentation Methods: Automated Watershed and Thresholding Methods with Iterated Conditional Modes Post Processing
International Conference on Tomography of Materials and Structures (ICTMS 2013) ?, ?(2013) 191-194

Sheppard A, Kingston A, Myers G, Varslot T, Knackstedt M, Fogden A, Sawkins T, Cruikshank R, Saadatfar M, Francois N, Arns C, Senden T
New Methods in Helical Scanning, Dynamic Imaging and Image Segmentation for Improved Quantitative Analysis in Micro-CT
International Conference on Tomography of Materials and Structures (ICTMS 2013) ?, ?(2013) 119-122

Derluyn H, Griffa M, Mannes D, Jerjen I, Dewanckele J, Vontobel P, Sheppard A, Boone M, Derome D, Cnudde V, Lehmann E, Carmeliet J
Probing salt crystalliztion damage mechanisms in porous limestone with neutron radiography and x-ray tomography
International Building Physics Conference (IBPC 2012) ?, ?(2012) 95-102

Saadatfar M, Francois N, Arad A, Madadi M, Cruikshank R, Seyed Alizadeh S, Sheppard A, Kingston A, Limaye A, Senden T, Knackstedt M
3D mapping of deformation in an uncosolidated sand: a Micro mechanical study
Society of Exploration Geophysicists Annual Meeting (SEG 2012) ?, ?(2012) 1-6

Varslot T, Kingston A, Myers G, Sheppard A
Considerations for high-magnification high-cone-angle helical micro-CT
Developments in X-Ray Tomography VIII 8506(2012) 1-10

Knackstedt M, Latham S, Sheppard A, Sok R, Kumar M
Rock Typing Across Disciplines
Society of Petrophysicists and Well Log Analysts Annual Symposium 2011 ?, ?(2011) 9

Myers G, Kingston A, Varslot T, Turner M, Sheppard A
DYNAMIC X-RAY MICRO-TOMOGRAPHY FOR REAL TIME IMAGING OF DRAINAGE AND IMBIBITION PROCESSES AT THE PORE SCALE
International Symposium of the Society of Core Analysts 2011 ?, ?(2011) 3586-3590

Varslot T, Kingston A, Latham S, Middleton J, Knackstedt M, Sheppard A
COMBINING HIGH-FIDELITY HELICAL MICROTOMOGRAPHY WITH REGION-OF-INTEREST SCANNING FOR IMPROVED CORE CHARACTERISATION
International Symposium of the Society of Core Analysts 2011 ?, ?(2011) 18

Arad A, Madadi M, Christy A, Sheppard A, Averdunk H, Knackstedt M
Understanding rock mechanics and acoustic anisotropy at the pore/grain scale
Annual Logging Symposium of the Society of Petrophysicists & Well Log Analysts (SPWLA 2010) ?, ?(2010) 16

Kumar M, Senden T, Sheppard A, Arns C, Knackstedt M
Variations of the Archie's Exponent; Probing Wettability and Low Sw Effects
Annual Logging Symposium of the Society of Petrophysicists & Well Log Analysts (SPWLA 2010) ?, ?(2010) 1-12

Kumar M, Knackstedt M, Latham S, Senden T, Sheppard A, Sok R, Varslot T, Arns C
Mapping fluid distributions in 3D at the pore scale: Quantifying the influence of wettability and saturation history on rock resisitivity
Annual Logging Symposium of the Society of Petrophysicists & Well Log Analysts (SPWLA 2009) ?, ?(2009) 18

Kumar M, Middleton J, Sheppard A, Senden T, Knackstedt M
Quantifying trapped residual oil in reservoir core material at the pore scale: Exploring the role of displacement rate, saturation history and wettability
International Petroleum Technology Conference 2009, IPTC 2009 5(2009) 3287-3291

Kumar M, Sheppard A, Arns C, Senden T, Knackstedt M
Visualizing and quantifying the residual phase distribution in core material
International Symposium of the Society of Core Analysts 2009 ?, ?(2009)

Nguyen V, Sheppard A, Knackstedt M, Pinczewski W
The Effects of displacement
International Symposium of the Society of Core Analysts 2009 ?, ?(2009)

Sok R, Varslot T, Ghous A, Latham S, Sheppard A, Knackstedt M
Pore scale characterization of carbonates at multiple scales: integration of micro-CT, BSEM and FIBSEM
International Symposium of the Society of Core Analysts 2009 ?, ?(2009)

Ghous A, Knackstedt M, Arns C, Sheppard A, Kumar M, Sok R, Senden T, Latham S, Jones A, Averdunk H, Pinczewski W
3D Imaging of Reservoir Core at Multiple Scales; Correlations to Petrophysical Properties and Pore Scale Fluid Distributions
International Petroleum Technology Conference 2008 4(2008) 10

Knackstedt M, Arns C, Madadi M, Sheppard A, Latham S, Sok R, Bachle G, Eberli G
Elastic and flow properties of carbonate core derived from 3D X ray-CT images
78th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2008 ?, ?(2008) 1804-1809

Knackstedt M, Sok R, Sheppard A, Latham S, Madadi M, Varslot T, Arns C, Bachle G, Eberli G
Probing Pore Systems in Carbonates: Correlations to Petrophysical Properties
Society of Petrophysicists and Well Log Analysts Annual Symposium 2008 ?, ?(2008) 16

Kumar M, Senden T, Knackstedt M, Latham S, Pinczewski W, Sok R, Sheppard A, Turner M
Wettability effects on the pore scale distribution of fluids
International Symposium of the Society of Core Analysts 2008 ?, ?(2008) 13

Kumar M, Senden T, Latham S, Sheppard A, Knackstedt M, Cinar Y
Designing for Mixed Wettability
Society of Petroleum engineers Improved Oil Recovery Symposium 3(2008) 1590

Latham S, Varslot T, Sheppard A
Automated registration for augmenting micro-CT 3D images
Computational Techniques and Applications Conference (CTAC 2008) ?, ?(2008) c534-C548

Latham S, Varslot T, Sheppard A
Image registration: Enhancing and Calibrating X-ray Micro-CT Imaging
International Symposium of the Society of Core Analysts 2008 ?, ?(2008) 12

Arns J, Sheppard A, Arns C, Knackstedt M, Pinczewski W, Yelkhovsky A
Pore level validation of representative pore networks obtained from micro-CT images
International Symposium of the Society of Core Analysts 2007 ?, ?(2007) 26

Ghous A, Senden T, Sok R, Sheppard A, Pinczewski W, Knackstedt M
3D Characterisation of Microporosity in Carbonate Cores
Middle East Regional SPWLA Symposium: Petrophysics and Brown Field Resource Optimization ?, ?(2007) 11

Knackstedt M, Arns C, Sakellariou A, Senden T, Sheppard A, Sok R
X-Ray Micro-tomography applications of Relevance to the Petroleum Industry
Symposium on Portable Synchrotron Light Sources and Advanced Applications 2007 902(2007)

Knackstedt M, Arns C, Sheppard A, Senden T, Sok R, Cinar Y, Olafuyi A, Pinczewski W, Padhy G, Ioannidis M
Pore scale analysis of electrical resistivity in complex core material
International Symposium of the Society of Core Analysts 2007 ?, ?(2007) Paper Number SCA2007-P53

Knackstedt M, Arns C, Sheppard A, Senden T, Sok R, Cinar Y, Pinczewski W, Ioannidis M, Padhy G
Archie's exponents in complex lithologies derived from 3D digital core analysis
Annual Logging Symposium of the Society of Petrophysicists & Well Log Analysts (SPWLA 2007) ?, ?(2007) paper UU:1-16

Sok R, Arns C, Knackstedt M, Senden T, Sheppard A, Averdunk H, Pinczewski W, Okabe H
Estimation of Petrophysical Parameters from 3D images of Carbonate Core
Middle East Regional SPWLA Symposium: Petrophysics and Brown Field Resource Optimization ?, ?(2007) 15

Arns C, Sheppard A, Saadatfar M, Knackstedt M
Predication of permeability from NRM response: surface relaxivity heterogeneity
Annual Logging Symposium of the Society of Petrophysicists & Well Log Analysts (SPWLA 2006) ?, ?(2006)

Knackstedt M, Arns C, Ghous A, Sakellariou A, Senden T, Sheppard A, Sok R, Averdunk H, Pinczewski W, Padhy G, Ioannidis M
3D imaging and flow characterization of the pore space of carbonate care samples
International Symposium of the Society of Core Analysts 2006 ?, ?(2006) 13

Knackstedt M, Arns C, Ghous A, Sakellariou A, Senden T, Sheppard A, Sok R, Nguyen V, Pinczewski W
3D imaging and characterization of the pore space of carbonate core: implications to single and two phase flow properties
Annual Logging Symposium of the Society of Petrophysicists & Well Log Analysts (SPWLA 2006) ?, ?(2006)

Olafuyi A, Sheppard A, Arns C, Sok R, Cinar Y, Knackstedt M, Pinczewski W
Experimental Investigation of Drainage Capillary Pressure Computed from Digitized Tomographic Images
SPE/DOE Symposium on Improved Oil Recovery 2(2006) 7

Saadatfar M, Sheppard A, Knackstedt M
Grain partitioning and its applications
International Workshop on X-Ray for GeoMaterials (GeoX 2006) ?, ?(2006) 8

Sheppard A, Sok R, Averdunk H, Robins V, Ghous A
Analysis of Rock Microstructure using High-resolution X-ray Tomography
International Symposium of the Society of Core Analysts 2006 ?, ?(2006) SCA2006-26-1-12

Arns C, Sheppard A, Sok R, Knackstedt M
NMR Petrophysical Predictions on Digitized Core Images
Society of Petrophysicists and Well Log Analysts Annual Symposium 2005 ?, ?(2005) MMM1-16

Bauget F, Turner M, Arns C, Saadatfar M, Sheppard A, Sok R, Knackstedt M
Rock Typing and Petrophysical property estimation via direct analysis on microtomographic images
International Symposium of the Society of Core Analysts 2005 ?, ?(2005) 1-12

Bauget F, Turner M, Arns C, Saadatfar M, Sheppard A, Sok R, Knackstedt M
Towards modelling regolith permeability with high resolution X-ray tomography
International Petroleum Conference and Exhibition (Petrotech-2005) ?, ?(2005)

Ghous A, Bauget F, Arns C, Sakellariou A, Senden T, Sheppard A, Sok R, Pinczewski W, Harris R, Beck G, Knackstedt M
Resistivity and Permeability Anisotropy Measured in Laminated Sands via Digital Core Analysis
Society of Petrophysicists and Well Log Analysts Annual Symposium 2005 ?, ?(2005) VVV1-14

Saadatfar M, Turner M, Arns C, Averdunk H, Senden T, Sheppard A, Sok R, Pinczewski W, Kelly J, Knackstedt M
Rock Fabric and Texture from Digital Core Analysis
Society of Petrophysicists and Well Log Analysts Annual Symposium 2005 ?, ?(2005) ZZ1-16

Arns C, Averdunk H, Bauget F, Sakellariou A, Senden T, Sheppard A, Sok R, Pinczewski W, Knackstedt M
Digital core laboratory: Analysis of reservoir core fragments from 3D images
SPWLA 45th Annual Logging Symposium 2004 (2004)

Jones A, Knackstedt M, Sheppard A, Sok R, Hutmacher D, Arns C, Sakellariou A, Senden T, Brandwood A, Milthorpe B, Jones A
Morphological Examination of Complex Microstructure via micro-CT imaging
World Biomaterials Congress 2004 ?, ?(2004)

Knackstedt M, Arns C, Limaye A, Sakellariou A, Senden T, Sheppard A, Sok R, Pinczewski W, Bunn G
Digital Core Laboratory: Properties of reservoir core derived from 3D images
SPE Asia Pacific Conference on Integrated Modelling for Asset Management 204 ?, ?(2004) SPE 87009/1-14

Turner M, Arns C, Sakellariou A, Senden T, Sheppard A, Sok R, Limaye A, Knackstedt M
Obtaining hydraulic properties of unconsolidated porous material
CRC LEME Regional Regolith Symposia 2004 ?, ?(2004) 370-4

Sakellariou A, Sawkins T, Senden T, Arns C, Limaye A, Oren P, Sheppard A, Sok R, Knackstedt M, Pinczewski W, Inge Berge L
Micro-CT Facility for Imaging Reservoir Rocks at Pore Scales
International Exposition and Annual Meeting of the Society for the Exploration Geophysicists 2003 ?, ?(2003) 1-4

Arns J, Arns C, Sheppard A, Sok R, Knackstedt M, Pinczewski W
Relative permeability from tomographic images: effect of correlated heterogeneitygies
7th International Symposium on Reservoir Wettability ?, ?(2002)

(62 publications)

Conference written presentation

Zhang Y, Mostaghimi P, Fogden A, Arena A, Sheppard A, Middleton J, Armstrong R
Determination of local diffusion coefficients and directional anisotropy in shale from dynamic micro-CT imaging
SPE/AAPG/SEG Unconventional Resources Technology Conference 2017 ?, ?(2017) 3083-3095

Kingston A, Myers G, Latham S, Li H, Sheppard A
Optimized x-ray source scanning trajectories for iterative reconstruction in high cone-angle tomography
Developments in X-Ray Tomography X ?, ?(2016) 1-11

Latham S, Kingston A, Recur B, Myers G, Sheppard A
Multi-resolution radiograph alignment for motion correction in X-ray micro-tomography
Developments in X-Ray Tomography X ?, ?(2016) 1-12

Fogden A, Olson T, Cheng Q, Middleton J, Kingston A, Turner M, Sheppard A, Armstrong R
Dynamic micro-CT imaging of diffusion in unconventionals
Unconventional Resources Technology Conference, URTeC 2015 ?, ?(2015) 2154822-1-18

Mehmani A, Tokan-Lawal A, Prodanovic M, Sheppard A
The effect of microporosity on transport properties in tight reservoirs
SPE Americas Unconventional Gas Conference (UGC 2011) ?, ?(2011) 821-834

Knackstedt M, Arns C, Bauget F, Sakellariou A, Senden T, Sheppard A, Sok R
Quantitative transport properties of granular material calculated from Xray CT images
International Petroleum Conference and Exhibition (Petrotech-2005) ?, ?(2005)

Sakellariou A, Senden T, Sawkins T, Knackstedt M, Turner M, Jones A, Saadatfar M, Roberts R, Limaye A, Arns C, Sheppard A, Sok R
An x-ray tomography facility for quantitative prediction of mechanical and transport properties in geological, biological and synthetic systems
International Society for Optical Engineering Conference 2004 5535(2004)

Arns C, Sakellariou A, Senden T, Sheppard A, Sok R, Knackstedt M, Pinczewski W, Bunn G
Virtual Core Laboratory: Properties of Reservoir Rock Derived from X-ray CT Images
International Exposition and Annual Meeting of the Society for the Exploration Geophysicists 2003 ?, ?(2003) 1477-1480

Arns C, Sakellariou A, Sheppard A, Sok R, Pinczewski W, Knackstedt M
Virtual Core Laboratory: A Facility for Imaging and Modelling Petrophysical Properties of Sedimentary Rock
International Petroleum Conference and Exhibition (Petrotech-2003) ?, ?(2003) 1-11

(9 publications)

Journal article (non-refereed)

Knackstedt M, Latham S, Madadi M, Sheppard A, Varslot T, Arns C, Arns C
Digital Rock Physics: 3D imaging of core material and correlations to acoustic and flow properties
Leading Edge, The January 2009(2009) 2833

(1 publications)

Journal short contribution (non refereed)

Arns C, Sheppard A, Sok R, Knackstedt M
NMR petrophysical predictions on digitized core images
Petrophysics 48, 3(2007) 202

(1 publications)