PhD defence by Hossein Younesian-Farid

Temporary sealing of porous media is an important stage in well abandonment programs. This research explores bio-clogging through microbial and enzymatic induced calcite precipitation (MICP/EICP) as an innovative solution to reduce permeability in carbonate formations.

 A thorough experimental analysis, modelling, and simulation provide key insights into nucleation sites' impact on biomineralisation kinetics, bacterial transport in carbonate media, and clogging dynamics in different domains. 

The findings highlight the suitability and effectiveness of MICP/EICP for well abandonment while also raising new research questions in the field.

Supervisors:

• Senior Researcher, Hamidreza M. Nick, DTU Offshore
• Researcher, Moein Jahanbani Veshareh, DTU Offshore

Examiners:

• Prof. Sarah Eileen Gasda, NORCE Norwegian Research Centre
• Prof. Joaquin Jimenez-Martinez, ETH Zürich
• Prof. Irene Rocchi, DTU