Imperial College London


Faculty of EngineeringDepartment of Earth Science & Engineering

Research Associate



+44 (0)20 7594 7326samuel.jackson




440/15Royal School of MinesSouth Kensington Campus





I am a mechanical engineer, turned Earth scientist, with a passion for fluid mechanics. My research is focused on understanding multiphase flow in the subsurface across scales – from μm to km, with application to carbon sequestration, petroleum engineering and groundwater hydrology.

In a changing energy landscape, where significant focus is shifting towards reducing carbon emissions and more efficient utilisation of existing hydrocarbon reservoirs, my research tackles fundamental issues concerning the sustainable use of energy resources, namely: How can captured CO2 be effectively stored in subsurface reservoirs? How can existing oil/gas reservoirs be utilised for efficient production after primary drainage? How can geothermal systems be exploited for effective energy production?

I use a combination of theory, high-precision numerical methods and carefully designed laboratory experiments to understand the multiphase flow of fluids through the subsurface at changing spatial and temporal scales:

Pore scale: Understanding fundamental fluid-fluid interactions across unstable  interfaces, in particular the viscous fingering instability.

Core scale: Characterising multiphase flow through heterogeneous, subsurface rock cores using a combination of X-ray CT scanning and high-fidelity 3D numerical simulations.

Field scale: Utilising large scale simulations incorporating upscaled heterogeneous functions to understand fluid migration and trapping in subsurface reservoirs.

Through this combined multi-scale approach, informed models and predictions can be made regarding the sustainable use of energy resources at large scale. I have expertise in analysing large datasets with HPC simulations, creating novel numerical methods and the application of state-of-the-art core flooding experiments and X-ray CT scanning.

I am currently part of the Flow and Reaction in Geologic Systems group in the Department of Earth Science & Engineering at Imperial College London. For news and updates please visit the website:

Flow and Reaction in Geologic Systems


Journal Papers

Conference proceedings



Agada S, Jackson S, Kolster C, et al., 2017, The impact of energy systems demands on pressure limited CO2 storage in the Bunter Sandstone of the UK Southern North Sea, International Journal of Greenhouse Gas Control, Vol:65, ISSN:1750-5836, Pages:128-136

More Publications