From fines migration to filter cake formation and back again: state-of-the-art in situ observation to understand pore scale processes

This project will use the latest 4D (3D + time) imaging methods to capture the porosity networks within the geological samples, and then track flow, and the transport of the suspended fine particles through that pore network. It uses the latest in situ experimental flow cells to enable experiments at a range of flow rates, fluid compositions, particle volume fractions and size distributions, and
under different reservoir conditions (confining pressure and temperature). Combining these experimental flow cells with in situ x-ray tomography allows this project to capture the behaviour and evolution of the flow inside the samples, as it happens; allowing the location of fluid and the suspended particles to be observed in real time.
The key project aims are to:
• Optimise the in situ x-ray tomography compatible flow cell apparatus to capture transport processes in reservoir lithologies
• Perform X-ray tomography experiments to image flow and transport in multiphase systems
• map aggregate formation in terms of flow, fluid chemistry and changing pore network characteristics
• develop an understanding of flow localisation processes in evolving pore networks
• improve and control the formation of aggregates and precipitates within the porous media using mechanical and chemical controls
By applying the latest 4D x-ray tomography and associated image analysis methods, the student will perform textural analysis to track the mobilisation, transport and deposition of the suspended load. Then through the relationships between how parameters such as particle concentration, size distribution and fluid rheology and the invasion, transport and deposition of fine particulate material the student will develop understanding of fines migration, and the mechanisms in a range of geological and engineering settings feeding into flow simulations and industry practice.

For further information on the studentship, including details of how to apply, please contact Dr Kate Dobson